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Resource allocator and resource allocation method

A resource allocation and allocator technology, applied in wireless communication, electrical components, multi-frequency code systems, etc., can solve the problems of increased overhead, achieve the effects of increasing system throughput, optimizing resource allocation, and improving resource utilization efficiency

Inactive Publication Date: 2009-09-16
LUCENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the byte overhead in UCD / DCD and UL_MAP / DL_MAP must be taken into account. As K increases, this overhead increases significantly

Method used

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  • Resource allocator and resource allocation method
  • Resource allocator and resource allocation method

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Embodiment Construction

[0015] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description of the present invention, detailed descriptions of known functions and configurations will be omitted to avoid making the subject of the present invention unclear.

[0016] In the network, the user terminal is usually fixed or in a slow moving state, the channel quality changes slowly, and each user can "see" one or more high-quality channels for a long time. Therefore, the adjacent sub-carrier mapping scheme (AMC) is adopted in the present invention, which can utilize frequency diversity, thereby helping to expand the system capacity.

[0017] The user can feed back the channel quality information of some subbands to the BS through the uplink, instead of the channel quality information of all subbands on the entire spectrum. For example, in the actual application of the IEEE802.16e standard, due to the limited bandwidth of the CQI feedb...

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Abstract

The invention discloses a resource allocator in BS and an allocation method thereof, which are used for allocating resources to a plurality of users belonging to the BS. The resource allocator comprises a user classification module, a basic requirement allocation module and a remaining resource allocation module; wherein the user classification module is used for allocating the user in one of a plurality of user sets with prearranged priority sequence according to the channel quality information fed back to the BS by each user; the basic requirement allocation module is used for carrying out resource allocation in each user set sequentially according to the prearranged priority sequence so as to meet the basic data speed requirement of each user; and the remaining resource allocation module is used for determining the remaining resource set and the remaining user set according to the remaining situation of the resource and the remaining requirement situation of the user so as to allocate the remaining resource, thus increasing the system throughput. The method and the structure can find out the optimum user-sub-band pair, meet the basic data speed requirement of each user, increase the system capability and reduce the byte expense of UCD / DCD and UL_MAP / DL_MAP.

Description

Technical field [0001] The present invention relates to a resource allocator and a resource allocation method thereof, and is particularly suitable for use in an adjacent subcarrier mapping (AMC) mode in an OFDMA-based system, which can ensure basic data rate requirements and increase system capacity. Background technique [0002] In recent years, the problem of resource allocation in OFDMA system has been paid much attention, and various resource allocation schemes have been proposed. figure 1 A schematic diagram of resource allocation in an OFDMA-based system is shown, where each subband on the frequency axis includes S subcarriers, and each time slot on the time axis includes L OFDM symbols. One subband and one time slot constitute an allocation unit (Allocation Unit, AU), whereby one AU includes S×L subcarrier-OFDM symbols. In the OFDMA system, the scheduling of data packets is carried out in units of frames, and the frequency and time are allocated for the transmission of o...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04L27/26
Inventor 焦文华蔡凌鹤
Owner LUCENT TECH INC
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