WO2010047546A2 - Method for transmitting resource allocation information in a wireless mobile communication system that supports a plurality of communication modes - Google Patents

Abstract

The present invention relates to a method for transmitting resource allocation information between a mobile communication device and a base station in a wireless mobile communication system that supports a plurality of communication modes. The method comprises the steps of: creating information relating to the number of resource units available for the mobile communication device operating in a second communication mode from all of the whole resource units which can be used by a first mobile communication device operating in a first communication mode and a second mobile communication device operating in the second communication mode; and broadcasting the information relating to the number of available resource units created in the previous step.

Description

A method for transmitting resource allocation information in a wireless mobile communication system supporting a plurality of communication modes

The present invention relates to a method for transmitting resource allocation information in a wireless mobile communication system supporting a plurality of communication modes.

The 802.16m amendment, as approved on 6 December 2006, is part of the Five Conditional Statements (P802.16 project authorization request) and IEEE 802.16-06 / 055r3. It has evolved accordingly. According to the PAR, this standard complies with IEEE Std. It has evolved as an amendment to 802.16. The 802.16m amendment may support legacy WirelessMAN-OFDMA devices.

In a conventional IEEE 802.16e system, a basic slot structure and a data region are defined as follows. 'Slots' in an Orthogonal Frequency Division Multiple Access (OFDMA) PHY require time and sub-channel dimensions and function as the smallest possible data allocation unit. The definition of an OFDMA slot depends on the OFDMA symbol structure. The OFDMA symbol structure includes uplink (UL) and downlink (DL), full usage of sub-channels (FUSC) and partial usage of sub-channels (PUSC), distributed sub-carrier (distributed sub-carrier) permutations and adjacent subcarrier permutation (AMC).

For DL optional FUSC and DL FUSC using distributed subcarrier permutation, one slot consists of one subchannel and one OFDMA symbol. For DL PUSC using distributed subcarrier permutation, one slot consists of one subchannel and two OFDMA symbols. For both UL PUSC and DL TUSC1 (using tiles of subchannel 1) and TUSC2 (using tiles of subchannel 2) using distributed subcarrier permutation, one slot consists of one subchannel and three OFDMA symbols It is composed. For adjacent subcarrier permutation (AMC), one slot consists of one subchannel and two, three, or six OFDMA symbols.

In OFDMA, a data region is a group of consecutive subchannels and a group of consecutive OFDMA symbols allocated in two dimensions. All assignments refer to logical subchannels. The two-dimensional assignment can be shown in squares as shown in FIG.

In the related art, each permutation method such as PUSC, FUSC, and AMC has a different basic data allocation structure, and a pilot structure is designed and used differently. This is because the permutation method is separated in time in the conventional 16e system, and the structure optimized for each permutation is designed. 2 illustrates an example related technique for a data allocation structure. Permutation rules are separated on the time axis in the related art. If more than one permutation method coexists in time, one unified basic data allocation structure and a pilot transmission structure are required.

When multiplexing the 16e system and the 16m system, it is desirable to design the time-frequency granularity of the PRU of the 16m system so that the PRU of the 16m system is compatible with the 16e system. It is also desirable to design multiplexing structures to make performance degradation of each of the 16e and 16m systems multiplexed with each other as low as possible.

In addition, in an environment in which the 16e system and the 16m system are multiplexed to operate together in the mixed mode in the same frame or the same subframe (especially in the uplink), a resource unit available to a 16m MS (Mobile Station) Or notification for subchannels is needed. In the case of notifying the MS by constructing a bitmap indicating available subchannels for all subchannels, a problem arises in that the size of the bitmap increases and signaling overhead increases.

An object of the present invention is to provide a resource allocation notification method for minimizing signaling overhead in an environment where a legacy system and a new system coexist.

In a wireless mobile communication system supporting a plurality of communication modes according to an aspect of the present invention for solving the above problems, a method for transmitting resource allocation information includes a first mobile communication device and a second operating in a first communication mode at a base station; Generating information related to the number of resource units available to the mobile communication device operating in the second communication mode, from among all resource units available to the second mobile communication device operating in the communication mode; And broadcasting information on the generated number of available resource units.

In a wireless mobile communication system supporting a plurality of communication modes, in accordance with another aspect of the present invention, the method for receiving resource allocation information may operate in a second communication mode with a first mobile communication device operating in a first communication mode from a base station. Receiving, via broadcasting, information related to the number of resource units available to the mobile communication device operating in the second communication mode among all resource units available to the second mobile communication device; And identifying the location of the available resource unit using the information.

According to another aspect of the invention, a mobile communication device adapted to communicate wirelessly with a base station may be used by a first mobile communication device operating in a first communication mode and a second mobile communication device operating in a second communication mode. A radio frequency for receiving information related to the number of resource units available to a mobile communication device operating in the second communication mode from a total resource unit through a super frame header (SFH). RF) unit; And a processor electrically connected to the radio frequency unit to locate the available resource unit using the information.

According to another aspect of the present invention, a base station configured to communicate wirelessly with a mobile communication device may be used by a first mobile communication device operating in a first communication mode and a second mobile communication device operating in a second communication mode. A processor for generating information related to the number of resource units available to the mobile communication device operating in the second communication mode among all resource units; And a Radio Frequency (RF) unit electrically connected to the processor and broadcasting the information.

The information may be information indicating the number of resource units available to the mobile communication device operating in the second communication mode.

If the number of resource units available to the mobile communication device operating in the second communication mode is greater than the number of resource units available to the mobile communication device operating in the first communication mode, the information is returned to the first communication mode. It may be information indicating the number of resource units available to the operating mobile communication device.

The information may be configured in a bitmap format.

The information may be broadcasted through a first super frame header (P-SFH).

The information may be broadcasted through a second super frame header (S-SFH).

According to the resource allocation notification method of the present invention, signaling overhead can be minimized in an environment in which a legacy system and a new system coexist.

1 is a diagram for comparing performance in terms of diversity gain depending on a combination of packet sizes and a user's available bandwidth.

2 shows an example of a related technique relating to a data allocation structure.

3-5 illustrate exemplary logical multiplexing structures in accordance with one embodiment of the present invention.

6 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when the legacy system operates only in PUSC mode for UL subframes.

7 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

8 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when the legacy system operates only in PUSC mode for UL subframes.

9 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

10 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when the legacy system operates only in PUSC mode for UL subframes.

11 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

12 and 13 illustrate exemplary physical multiplexing structures for the logical multiplexing structure of FIGS. 10 and 11, respectively.

14 and 15 illustrate a method of multiplexing and demultiplexing the frames illustrated in FIG. 13.

16 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

17 illustrates an example logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

18 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

19 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

20 is a view for explaining a method of configuring available resource allocation information by configuring a bitmap for the entire subchannel.

21 is a diagram illustrating a method for transmitting resource allocation information according to an embodiment of the present invention.

22 illustrates a structure of a wireless communication system according to an embodiment of the present invention.

23 is a block diagram illustrating components of a user device according to an embodiment of the present invention.

The accompanying drawings are provided to aid the understanding of the present invention, and together with the description of the present invention, describe the principles of the present invention and describe embodiments of the present invention.

The accompanying drawings are provided to aid the understanding of the present invention. The accompanying drawings illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

Reference is made in detail to exemplary embodiments of the invention, examples of which are depicted on the accompanying drawings. The detailed description given below with reference to the accompanying drawings is intended to describe exemplary embodiments of the present invention and is not intended to show the only embodiments that can be implemented in accordance with the present invention. The following detailed description includes specific details for the purpose of providing a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without such specific details. For example, the following description will be described using specific terms, but the invention is not limited by these terms or other terms indicating the same meaning.

"Legacy MS" in this document refers to a mobile station (MS) that is compatible with the WirelessMAN-OFDMA Reference System. "Legacy BS" refers to a base station (BS) that is compatible with the WirelessMAN-OFDMA reference system. "IEEE 802.16m MS" refers to an MS that is compatible with the Advanced Air Interface as modified by IEEE 802.16-2004 and IEEE 802.16e-2005 and IEEE 802.16m. And "IEEE 802.16m BS" indicates a BS compatible with the enhanced air interface modified by IEEE 802.16-2004 and IEEE 802.16e-2005 and IEEE 802.16m.

IEEE 802.16m may continue to provide support and interoperability for legacy WirelessMAN-OFDMA devices, including MS and BS. In particular, the features, functions, and protocols available in IEEE 802.16m may support the features, functions, and protocols employed by the WirelessMAN-OFDMA legacy device. IEEE 802.16m may disable legacy support.

Backward compatibility may satisfy the following requirements.

The IEEE 802.16m MS must be able to operate with the legacy BS with the same level of performance that the legacy MS sees in relation to the legacy BS.

Systems based on the IEEE 802.16m and WirelessMAN-OFDMA reference systems should have the same channel bandwidth, be able to operate on the same radio frequency (RF) carrier, and have different channel bandwidths on the same RF carrier. It should be possible.

The IEEE 802.16m BS should be able to support the coexistence of IEEE 802.16m and legacy MSs when IEEE 802.16m and legacy MSs operate on the same RF carrier. System performance for this coexistence state should be improved for some of the IEEE 802.16m MSs attached to the IEEE 802.16m BS.

IEEE 802.16m BS is a handover of legacy MS from IEEE 802.16m BS or up to IEEE 802.16m BS and from legacy BS or legacy BS at the same level of performance as handover between two legacy BSs Must be able to support

The IEEE 802.16m BS must be capable of supporting the legacy MS with the same level of performance that the legacy BS provides to the legacy MS, and must also support the IEEE 802.16m MS on the same RF carrier. To support backward compatibility, multiplexing of 16e and 16m in the same subframe or frame is required. This multiplexing can be performed by two multiplexing schemes: TDM and / or FDM. TDM is beneficial in that full adaptability for 16m system optimization is supported. However, TDM may have the disadvantage of causing link budget loss for legacy systems. On the other hand, FDM is beneficial in that it has no effect on link budgets on legacy systems. However, FDM may have a disadvantage in that 16m sub-channelization is limited because resources for 16e partial usage of subchannels coexist in the same subframe. In particular, the TDM scheme may have a problem that is difficult to implement when AMC mode is used in a 16e legacy system. On the other hand, the FDM scheme may have a problem that is difficult to implement when the PUSC mode is used in the 16e legacy system.

3 illustrates an exemplary logical multiplexing structure in accordance with an embodiment of the present invention.

Referring to FIG. 3, zones 301, 302, and 303 each consist of one subframe. Zone 303 is reserved only for '16m allocation of all types'. Herein, all types of 16m allocations include allocation of 16m local resource units and allocation of 16m distributed resource units. 'All types of 16m allocation' includes allocation of 16m localized resource units and allocation of 16m distributed resource units. The resource for '16e PUSC' is multiplexed with the resource for '16m allocation of all types' in a TDM manner or separated from the resource for '16e AMC'. And, the resource for '16e AMC' is multiplexed with the resource for '16m allocation of all types' in the TDM scheme and / or FDM scheme. In addition, resources for '16e AMC' and resources for '16m allocation of all types' are multiplexed in the FDM manner in the zone 302. However, according to the multiplexing structure of FIG. 3, there may be a legacy coverage loss because the time span of the zone 301 for the 16e system is limited by the TDM scheme.

4 illustrates an exemplary logical multiplexing structure in accordance with another embodiment of the present invention.

4, the zone 401 for '16e PUSC' and '16m distributed resource unit (DRU) with 16e tile / permutation rule' is composed of two subframes. Zone 402 is reserved only for '16m allocation of all types' and consists of one subframe. Resources for '16e PUSC' and resources for “16m Distributed Resource Unit (DRU) with 16e Tile / Permutation Rule” are multiplexed in zone 401 in FDM manner

5 illustrates an exemplary logical multiplexing structure in accordance with another embodiment of the present invention.

Referring to FIG. 5, the zone 502 is composed of one subframe if it is reserved for '16m allocation of all types' and '16e AMC'. Zone 501 is reserved for '16e PUSC' and '16m distributed resource unit (DRU) with 16e tile / permutation rules' and consists of two subframes.

Referring to FIG. 4, it can be seen that only '16m' exists in the zone 402. According to the multiplexing structure of FIG. 4 or 5, legacy coverage can be extended, in which the time span of the '16e PUSC' zone 401 or zone 501 is equal to the multiplexing structure of FIG. 3. This is because it is longer than the time span. However, according to Figures 4 and 5, 16m system complexity may increase due to two distributed permutation rules. In such structures, if the uplink has three subframes, the size of the '16e PUSC' zone 401 or zone 501 may consist of two subframes to support legacy coverage. And if the uplink has four subframes, the size of the '16e PUSC' zone 401 or zone 501 may consist of three subframes to support legacy coverage.

6 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when the legacy system operates only in PUSC mode for UL subframes. In this multiplexing structure, resources for '16e PUSC' and resources for '16m allocation of all types' are multiplexed in a TDM manner to support legacy. According to the multiplexing structure of FIG. 6, the negative effect of the legacy 16e system on the 16m resource allocation can be minimized because the frequency granularity of the 16m resource allocation unit is not affected by the 16e legacy system. Also in this case, if the uplink (UL) Physical Resource Unit (PRU) is composed of 18 subcarriers and 6 OFDMA symbols, the UL PRU can be simply applied to the multiplexed structure, This is because it is homogeneous with the DL PRU.

7 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe. In this multiplexing structure, resources for '16e PUSC' and resources for '16m allocation of all types' are multiplexed by TDM, and resources for '16e PUSC' and resources for '16e AMC' are separated by TDM. do. On the other hand, resources for '16e AMC' and resources for '16m allocation of all types' are multiplexed by FDM in the same zone 701.

8 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when the legacy system operates only in PUSC mode for UL subframes. In this multiplexing structure, resources for '16e PUSC' and resources for '16m allocation of all types' are always multiplexed in a TDM manner. And a PRU of 18 subcarriers and 6 OFDMA symbols can be used for 16m resource allocation without any other modifications. Referring to FIG. 8, the multiplexing structure may consist of three uplink subframes 801, 802, and 803, and '16e PUSC' is allocated to one subframe 801. It should be noted that the present invention is not limited by the specific time length of each zone 801, 802, 803.

9 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe. In this multiplexing structure, resources for '16e PUSC' and resources for '16m allocation of all types' are always multiplexed by TDM method, resources for '16e AMC' and resources for '16m allocation of all types' Always multiplexed in the FDM scheme, a PRU of 18 subcarriers and 6 OFDMA symbols can be used for 16m resource allocation without any other modifications. Referring to FIG. 9, the multiplexing structure may consist of three uplink subframes 901, 902, and 903, and '16e PUSC' is allocated to one subframe 901. However, it is apparent that the present invention is not limited by the exemplary structure of FIG.

10 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when the legacy system operates only in PUSC mode for UL subframes. In this multiplexing structure, resources for '16e PUSC' and resources for '16m' are multiplexed by both TDM and FDM schemes. If '16m' supports the same rules as the 16e tile / permutation rule, or supports granularity compatible with the granularity of '16e PUSC', '16m' in zone 1001 means '16e PUSC' and FDM Can be multiplexed in a manner. However, resources for '16m allocation of all types' may be multiplexed with resources for '16e PUSC' in the zone 1002 in a TDM manner.

11 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe. In this multiplexing structure, resources for '16e PUSC' and resources for '16m' are multiplexed by both TDM and FDM schemes, resources for '16m allocation of all types' and resources for '16e AMC' Multiplexed in a manner. If part of the zone 1101 is empty after the '16e PUSC' assignment, '16m' supports the same rules as the 16e tile / permutation rule or supports a granularity compatible with the granularity of the '16e PUSC' In this case, resources for '16m' in the zone 1101 may be multiplexed with resources for '16e PUSC' in an FDM manner. However, resources for '16m allocation of all types' may be multiplexed with resources for '16e AMC' in zone 1102 in FDM manner. Meanwhile, the resource for '16m' in the zone 1102 may be multiplexed with a resource for '16e PUSC' in a TDM manner. The multiplexing structure of FIG. 11 may be usefully applied when multiple allocation modes such as '16e AMC', '16e PUSC', '16m distributed resource unit mode', and '16m local mode' should be allocated in one time domain. .

12 and 13 illustrate exemplary physical multiplexing structures for the logical multiplexing structure of FIGS. 10 and 11, respectively.

In the physical regions shown in FIGS. 12 and 13, the 16e region and the 16m region (diversity) of FIGS. 11 and 12 may be interlaced by a predetermined rule (eg, the 16e PUSC permutation rule). The frequency granularity of the 16e region PUSC mode may be based on the use of 4 x 3 tiles. As an example, by adding two 4 x 3 tiles to create a 4 x 6 composite tile for 16e mode, and limiting the 16m mode to have 4 x 6 tiles, the common tile structure (i.e. 4 x 6) can be used in both 16e and 16m regions. Such common tile structures may be interlaced in any predetermined order in the frequency domain (eg, followed by one or more 16m followed by 16e, followed by one or more 16e). The interlacing of these specially sized tiles allows for efficient frequency use. These specially sized tiles are time division multiplexed with other sized tiles (ie 4 x 6 integer multiples of tiles) such as tiles for '16m AMC' of all types and / or '16e AMC'. Can be.

14 and 15 illustrate a method of multiplexing and demultiplexing the frames illustrated in FIG. 13. Once ready to transmit data, the device frequency multiplexes the tile of the first communication mode with the tile of the second communication mode to generate a frequency multiplexed subframe (or group of subframes) S1. Creates a subframe (or subframe group) 1101 of. The tile of the first communication mode may include X1 consecutive subcarriers and Y1 consecutive OFDMA symbols. The tile of the second communication mode may include X2 consecutive subcarriers and Y2 consecutive OFDMA symbols. The multiple may be a multiple of an integer (eg, X1 = X2 = 4, Y1 = 3, and Y2 = 6). The first communication mode may include partial usage of sub-channels (PUSC) subchannelization. The second communication mode may include tile permutation.

Optionally, the apparatus may time division multiplex the frequency multiplexed subframe (or subframe group) with a second subframe (or subframe group) of a third communication mode (eg, one of subframe 1102 of FIG. 11). (S2). The third communication mode may include contiguous subcarrier permutation (AMC) or distributed subcarrier permutation.

As another option, the apparatus frequency multiplexes the PRU in the third communication mode with the PRU in the fourth communication mode to generate a second frequency multiplexed subframe (or group of subframes) (eg, one of subframes 1102 in FIG. 11). It generates (S3). Optionally, the apparatus then time division multiplexes the frequency multiplexed subframe (or subframe group) with the second frequency multiplexed subframe (or subframe group) (S4). The PRU of the third communication mode may include X3 consecutive subcarriers and Y3 consecutive OFDMA symbols. The PRU of the fourth communication mode may include X4 consecutive subcarriers and Y4 consecutive OFDMA symbols. In one option, X3 = X4 and Y4 is a multiple of Y3 (eg, X3 = 18, Y3 = 3, and Y4 = 6). The third communication mode may include AMC and the fourth communication mode may include distributed subcarrier permutation.

The method of FIG. 15 is the reverse structure of FIG. FIG. 15 is a post reception method for generating the structures shown in FIGS. 11 and 13. Once data is received (S5), the device frequency demultiplexes the frequency multiplexed subframe (or subframe group) to form a tile of the first communication mode and a tile of the second communication mode (S6). Optionally, the device time-division demultiplexes the received data to form a tile of the first communication mode and a tile of the second communication mode (S6). Optionally, the apparatus time division demultiplexes the received data to obtain a frequency multiplexed subframe (or subframe group) and a second subframe (or subframe group) of the third communication mode (S7). Alternatively, the apparatus time division demultiplexes the data to obtain a frequency multiplexed subframe (or subframe group) and a second frequency multiplexed subframe (or subframe group) (S8). Alternatively, the device may demultiplex the second frequency multiplexed subframe (or group of subframes) to form the PRU of the third communication mode and the PRU of the fourth communication mode (S9), as well as frequency multiplexing. The deframe (or subframe group) may be frequency demultiplexed to form a tile of the first communication mode and a tile of the second communication mode (S6).

16 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe. In this multiplexing structure, resources for '16e PUSC' are separated in a TDM manner from resources for '16e AMC' as in the conventional method, and resources for '16m' are divided into resources for '16e PUSC' and '16e AMC'. Multiplexed by TDM scheme with resources for. According to the multiplexing structure of FIG. 16, the negative impact of the legacy 16e system on the 16m resource allocation can be minimized because the frequency granularity of the 16m resource allocation is not affected by the 16e legacy system. Also in this case, if the uplink PRU consists of 18 subcarriers and 6 OFDMA symbols, the uplink PRU can be easily applied to the multiplexed structure, since it has the downlink PRU in common.

17 illustrates an example logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe. Referring to FIG. 17, it can be seen that the zone 1503 is reserved only for '16m allocation of all types' and may consist of one or more subframes. In zone 1503, resources for '16m' may be multiplexed in a TDM manner with both resources for '16e PUSC' and resources for '16e AMC'. In this multiplexing structure, resources for '16e PUSC' can be multiplexed in a TDM manner with resources for '16m allocation of all types', and resources for '16e AMC' for all 16m resources. And multiplexed with TDM and / or FDM.

According to the multiplexing structure of FIG. 17, the influence of the legacy 16e system on the 16m resource allocation can be minimized because the frequency granularity of the 16m resource allocation is not affected by the 16e legacy system. Also, if the size of the PRU used in zone 1502 is 18 subcarriers and 6 OFDMA symbols, the impact of the legacy 16e system on 16m resource allocation can be minimized, which is the frequency granularity of '16m allocation of all types'. This is because the frequency granularity of '16e AMC' is the same.

If one or more uplink subframes are not allocated for '16e PUSC' and '16e AMC', resources for '16m allocation of all types' may be multiplexed in a TDM manner with resources for '16e AMC'.

In this case, '16m allocation of all types' of zone 1502 may not have sufficient band-scheduling gain or frequency diversity gain, which is '16m local resource unit' and '16m distributed resource' in zone 1502. This is because the unit is multiplexed by '16e AMC' and FDM. Therefore, it is advantageous that the zone for '16m allocation of all types' in zone 1503 is multiplexed in a TDM manner with the resources for '16e AMC'. However, multiplexing resources for '16m' with resources for '16e AMC' in a TDM manner can cause problems in uplink coverage, which is sufficient for time span for '16m' in zone 1503. Because it does not. To solve this problem, subframes in zone 1502 may be extended or concatenated into subframes of adjacent zone 1503 for 16m allocation. Referring to FIG. 17, resources for '16e AMC' and 16m resources multiplexed in the FDM scheme may be extended to adjacent next subframes (A) or not (B), and for '16e AMC'. 16m resources multiplexed with the resource and the TDM scheme may or may not be extended to previous subframes (C). Extending 16m resources to adjacent subframes is advantageous for cell edge users, because it provides more uplink coverage.

According to the multiplexing structure of FIG. 17, resources for '16m allocation of all types' may be multiplexed by both a resource for '16e AMC' and FDM and TDM schemes. In other words, hybrid FDM / TDM is supported between the resource for '16e AMC' and the resource for '16m'. As a result, the base station may have flexibility for trade-off between uplink coverage and band-scheduling / diversity gain. In other words, the base station can be flexible because a zone 1503 is provided that is reserved only for '16m allocation of all types' when the legacy system operates for both PUSC and AMC.

18 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe.

The multiplexing structure of FIG. 18 may be regarded as a modification of the multiplexing structure of FIG. 17. According to FIG. 18, all resources for '16e AMC' and all resources for '16m allocation of all types' in the zone 1602 multiplexed in the FDM scheme are extended to the next adjacent subframes (A). These extended resources may be allocated only for MSs whose power optimization is considered more important than band-scheduling gain or diversity gain, or for MSs located at the cell edge. On the other hand, the resource B for '16e allocation of all types' in the zone 1603 that is supplemented with the above-described extended resources and multiplexed in the TDM manner with the resources for the '16e AMC' is not located at the cell edge. It can only be allocated for MSs or MSs that are less sensitive to power optimization.

19 illustrates an exemplary logical multiplexing structure according to another embodiment of the present invention when a legacy system operates in both PUSC mode and AMC mode for a UL subframe. Referring to FIG. 19, at least a portion of each subframe 1701, 1702, and 1703 may be allocated to a resource for '16e PUSC' or a resource for '16e AMC'. In this multiplexing structure, resources for '16e PUSC' are multiplexed in TDM manner with resources for '16m allocation of all types', and resources for '16e PUSC' are separated in TDM manner with resources for '16e PUC'. The resources for '16e AMC' are multiplexed only with resources for '16m allocation of all types' and FDM method. Thus, all resources for 16m in zone 1702 can be extended to the next subframe for uplink coverage enhancement.

According to the multiplexing structure of FIG. 19, the negative effect of the legacy 16e system on the 16m resource allocation can be minimized because the frequency granularity of the 16m resource allocation is not affected by the '16e PUSC'. Furthermore, if a PRU of 18 subcarriers and 6 OFDMA symbols is used for '16m', the negative effect of the legacy 16e system on 16m resource allocation can be minimized, with a frequency granularity of '16m' of '16e AMC'. This is because the frequency granularity is equal to.

According to the present invention, information on zone configuration including resource allocation of 16e or 16m may be signaled to the IEEE 802.16 MS. This signaling may be sent in broadcast type. For example, this information may signal whether the 16e system operates in each subframe by which of the PUSC and AMC modes. As another example, when a resource for '16e' is multiplexed by FDM in a subframe in which a resource for '16e' operates in AMC mode, information on resource allocation of '16e AMC' is transmitted to an IEEE 802.16m MS. Can be signaled. As another example, when resources for '16m' are multiplexed in the FDM scheme in a subframe in which '16e' is operating in PUSC mode, if the resources for '16m' are the same as the tile / permutation rule of 16e If it supports or granularity compatible with the '16e PUSC' granularity, the information on the resource allocation of the '16e PUSC' or '16m' resource allocation may be signaled to the IEEE 802.16m MS. Giving resource allocation information of '16e PUSC' or '16m' is the same as giving information about 16m available resources because 16e PUSC and 16m are multiplexed by FDM.

20 is a view for explaining a method of configuring available resource allocation information by configuring a bitmap for the entire subchannel. As shown in FIG. 20, when the information on the available subchannels for all subchannels is configured as a bitmap, the size of the bitmap increases, which causes a signaling overhead to increase.

21 is a diagram illustrating a method for transmitting resource allocation information according to an embodiment of the present invention. If the frequency sizes of the basic resource units, subchannels, PRUs, or slots of the 16e system and the 16m system are the same, the available subchannels of the entire subchannels as shown in FIG. Instead of configuring the information as a bitmap and transmitting the information to the 16m MS, as illustrated in FIG. 21, only information about the total number of available subchannels may be transmitted to the 16m MS. Knowing the total number of subchannels available, 16m MSs use available sub-channels in the physical domain as well as the positions of the available sub-channels in the logical domain using a previously established permutation equation (or other information or predetermined information). Know the location of the channels. As illustrated in FIG. 21, when the number of subchannels available to the 16m MS in all subchannels is 3, the number may be configured as a bitmap and 11, which is bitmap information, may be transmitted to the 16m MS.

Such a transmission method may transmit the total number information of the available subchannels to all 16m MSs, and if necessary, transmit the total number information of the available subchannels to a partial group of the 16m MS per group.

In addition, the method of signaling the total number may transmit the number information in a bitmap format. For example, if the total number is 0 to 7, the bitmap may be transmitted as one of 000,001,010,011,100,101,110,111. In addition, other methods than the bitmap format can be applied.

Meanwhile, in order to reduce signaling overhead, instead of informing the 16m MS of the number of available subchannels, the number of subchannels used by the 16e MS, that is, the number of subchannels not available to the 16m MS, may be informed. . This may further reduce signaling overhead when the number of subchannels available to the 16m MS is greater than the number of subchannels not available.

The transmission of the information may be broadcast to the 16m MSs via a Super Frame Header (SFH), or may be broadcasted through a system configuration control channel other than SFH. In case of transmitting by SFH, signaling may be performed by P-SFH (Primary-SFH) or S-SFH (Secondary-SFH) according to the transmission period and the type of content to be transmitted. Referring to FIG. 22, an evolved-UMTS terrestrial radio access network (E-UTRAN) has one or more base stations (BSs) 20 that provide a control plane and a user plane.

The user equipment (UE) 10 may be fixed or mobile, and may include a mobile station (MS), a user terminal (UT), a subscriber station (SS), and a wireless device. May be referred to in other terms, such as. BS 20 is usually a fixed station that communicates with UE 10 and may be referred to by other terms, such as evolved node-B (eNB), base transceiver system (BTS), and access point. It may be. There is one or more cells within the coverage of BS 20. An interface for transmitting user traffic or control traffic may be used between the BSs 20. From now on, downlink is defined as the communication link from BS 20 to UE 10 and uplink is defined as the communication link from UE 10 to BS 20.

The BSs 20 are interconnected by an X2 interface. The BSs 20 are also connected to an evolved packet core (EPC) by an S1 interface, in particular to a mobility management entity (MME) / serving gateway (S-GW) 30. The S1 interface supports many-to-many connections between the BS 20 and the MME / S-GW 30.

23 is a diagram illustrating the components of the apparatus 50. This apparatus 50 may be the UE of FIG. 21 or the BS. In addition, the device 50 can exchange the data structures of FIGS. 3 to 17 and 20 to 21. The device 50 includes a processor 51, a memory 52, a radio frequency unit (RF unit) 53, a display unit 54, and a user interface unit 55. Layers of the air interface protocol are implemented in the processor 51. The processor 51 provides a control plan and a user plan. The function of each layer may be implemented in the processor 51. The processor 51 may include a contention resolution timer. Memory 52 is coupled to processor 51 to store operating systems, applications, and general files. If the device 50 is a UE, the display unit 54 may display a variety of information and use well known elements such as a liquid crystal display (LCD) and an organic light emitting diode (OLED). The user interface unit 55 may be composed of a combination of well known user interfaces such as a keypad, a touch screen, and the like. The RF unit 53 may be connected to the processor 51 to transmit and receive a radio signal.

The layers of the air interface protocol between the UE and the network are based on the lower three layers of the open system interconnection (OSI) model, which is well known in the communication system: first layer (L1), second layer (L2), and third layer. Can be classified as (L3). The physical layer or the PHY layer belongs to the first layer and provides an information transmission service through a physical channel. A radio resource control (RRC) layer belongs to the third layer and provides control radio resources between the UE and the network. The UE and the network exchange RRC messages through the RRC layer.

Furthermore, those skilled in the art will appreciate that for each of the above-described embodiments, a plurality of tiles distributed in the frequency domain may form one distributed resource unit (DRU). will be.

It will be apparent to those skilled in the art that various modifications of the present invention can be made without departing from the spirit of the present invention. Accordingly, the present invention is intended to enable various modifications within the scope of the claims appended hereto and their equivalents.

The present invention is applicable to systems supporting the IEEE Standard 802.16e system.

Claims (24)

1. In a wireless mobile communication system supporting a plurality of communication modes, a resource allocation information transmission method,

   A mobile communication operating in the second communication mode among all resource units available to the first mobile communication device operating in the first communication mode and the second mobile communication device operating in the second communication mode at the base station. Generating information related to the number of resource units available to the device; And

   Broadcasting information on the number of available resource units generated;

   How resource allocation information is sent.
2. The method of claim 1,

   The information is information indicating the number of resource units available to the mobile communication device operating in the second communication mode.

   How resource allocation information is sent.
3. The method of claim 1,

   If the number of resource units available to the mobile communication device operating in the second communication mode is greater than the number of resource units available to the mobile communication device operating in the first communication mode, the information is returned to the first communication mode. Information indicating the number of resource units available to the operating mobile communication device,

   How resource allocation information is sent.
4. The method according to any one of claims 2 and 3, wherein

   The information is configured in a bitmap format,

   How resource allocation information is sent.
5. The method of claim 1,

   The information is broadcast through a first super frame header (P-SFH),

   How resource allocation information is sent.
6. The method of claim 1,

   The information is broadcast through a second super frame header (S-SFH),

   How resource allocation information is sent.
7. In a wireless mobile communication system supporting a plurality of communication modes, as a method of receiving resource allocation information,

   A mobile communication operating in the second communication mode, among all resource units available to the first mobile communication device operating in the first communication mode and the second mobile communication device operating in the second communication mode, from the base station. Receiving information related to the number of resource units available by the device through broadcasting; And

   Identifying the location of the available resource unit using the information;

   How to receive resource allocation information.
8. The method of claim 7, wherein

   The information is information indicating the number of resource units available to the mobile communication device operating in the second communication mode.

   How to receive resource allocation information.
9. The method of claim 7, wherein

   If the number of resource units available to the mobile communication device operating in the second communication mode is greater than the number of resource units available to the mobile communication device operating in the first communication mode, the information is returned to the first communication mode. Information indicating the number of resource units available to the operating mobile communication device,

   How to receive resource allocation information.
10. The method according to any one of claims 8 and 9,

    The information is configured in a bitmap format,

    How to receive resource allocation information.
11. The method of claim 7, wherein

    The information is broadcast through a first super frame header (P-SFH),

    How to receive resource allocation information.
12. The method of claim 7, wherein

    The information is broadcast through a second super frame header (S-SFH),

    How to receive resource allocation information.
13. A mobile communication device adapted to communicate wirelessly with a base station,

    Among all resource units available to the first mobile communication device operating in the first communication mode and the second mobile communication device operating in the second communication mode, the mobile communication device operating in the second communication mode includes: A radio frequency (RF) unit for receiving information related to the number of available resource units through a super frame header (SFH);

    A processor electrically connected to the radio frequency unit and using the information to locate the available resource unit;

    Mobile communication devices.
14. The method of claim 13,

    The information is information indicating the number of resource units available to the mobile communication device operating in the second communication mode.

    Mobile communication devices.
15. The method of claim 13,

    If the number of resource units available to the mobile communication device operating in the second communication mode is greater than the number of resource units available to the mobile communication device operating in the first communication mode, the information is returned to the first communication mode. Information indicating the number of resource units available to the operating mobile communication device,

    Mobile communication devices.
16. The method according to any one of claims 14 and 15,

    The information is configured in a bitmap format,

    Mobile communication devices.
17. The method of claim 13,

    The super frame header is a first super frame header (P-SFH),

    Mobile communication devices.
18. The method of claim 14,

    The super frame header is a second super frame header (S-SFH),

    Mobile communication devices.
19. A base station configured to communicate wirelessly with a mobile communication device,

    Among all resource units available to the first mobile communication device operating in the first communication mode and the second mobile communication device operating in the second communication mode, the mobile communication device operating in the second communication mode includes: A processor for generating information relating to the number of available resource units;

    A radio frequency (RF) unit electrically connected to the processor, the radio frequency (RF) unit broadcasting the information;

    Base station.
20. The method of claim 19,

    The information is information indicating the number of resource units available to the mobile communication device operating in the second communication mode.

    Base station.
21. The method of claim 19,

    If the number of resource units available to the mobile communication device operating in the second communication mode is greater than the number of resource units available to the mobile communication device operating in the first communication mode, the information is returned to the first communication mode. Information indicating the number of resource units available to the operating mobile communication device,

    Base station.
22. The method according to any one of claims 20 and 21,

    The information is configured in a bitmap format,

    Base station.
23. The method of claim 19,

    The information is broadcast through a first super frame header (P-SFH),

    Base station.
24. The method of claim 19,

    The information is broadcast through a second super frame header (S-SFH),

    Base station.

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