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Indication method for wireless resource allocation of LTE system

A technology of wireless resources and indication, applied in the field of communication, can solve the problems that have not been raised, and achieve the effect of reducing the scheduling overhead

Active Publication Date: 2008-02-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is obviously disadvantageous to occupy too many resources in the L1 / L2 control channel
[0008] However, a technical solution capable of solving the above problems has not been proposed so far

Method used

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  • Indication method for wireless resource allocation of LTE system
  • Indication method for wireless resource allocation of LTE system
  • Indication method for wireless resource allocation of LTE system

Examples

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example 1

[0035] Example 1: For uplink RB

[0036] For the allocation of uplink RBs, the LTE system has decided to adopt a tree representation method. In this representation method, the size of the RB allocation field is Where N is the number of RBs of the system in a subframe, Indicates rounding up. The terminal can know the number of RBs of the system in one subframe according to the system bandwidth. If the terminal does not know the system bandwidth, it will not know how to resolve the RB allocation domain after receiving the uplink scheduling grant signaling, unless the uplink scheduling grant signaling contains system bandwidth related information.

[0037] Suppose there is an LTE system with a system bandwidth of 5MHz, and each subframe has 25 RBs. Uplink RB allocation has 25 * 26 2 = 325 In this case, 9 bits are required for representation, so the size of the RB all...

example 2

[0038] Example 2: For downlink RB

[0039] For downlink RB allocation, the LTE system has not yet decided what representation method to use. Since discontinuous downlink RBs need to be allocated to the same terminal in one downlink scheduling assignment signaling, this brings difficulty to the expression of downlink RB allocation. Especially for a system with a large system bandwidth, for example, 10MHz, 20MHz, if every possible allocation situation is represented, it will bring a lot of overhead. However, for systems with a small system bandwidth, eg, 1.25MHz, it may be both flexible and simple to use a bitmap to represent all allocations.

[0040]Therefore, there may be multiple representation methods for downlink RB allocation, for example, full bitmap method, tree representation method, subset representation method and group representation method. Even with the same representation method, the size of the downlink RB allocation field may be different for systems with diff...

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Abstract

The utility model discloses an indication method for wireless resource allocation in a LTE system, comprising: a base station informs a terminal the system bandwidth and sends the dispatch / control instruction containing allocation domain of the resource block to the terminal. The terminal knows the resource block allocated on the basis of the system bandwidth and the resource block allocation domain in the dispatch / control instruction. The indication method in the utility model can decide the RB resource to be allocated to the terminal by making the terminal get the system bandwidth and the RB allocation domain in the dispatch / control instruction from the network side, so that the dispatching expense is greatly reduced.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a method for indicating radio resource allocation of a long-term evolution system. Background technique [0002] As shown in FIG. 1 , a 3rd Generation Partnership for Long Term Evolution (3GPP LTE) system mainly consists of a terminal, a base station, and a core network. Among them, base stations can have logical or physical connections according to needs. The network composed of base stations is called radio access network (RAN), which is responsible for access layer affairs, such as management of radio resources; uplink and downlink radio resources The base station is responsible for scheduling in a shared channel manner. The base stations are connected to the core network, and each base station can be connected to one or more core network nodes (CN). The core network is responsible for non-access stratum affairs, such as billing and location management. A termi...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L1/00H04L27/26H04W72/04
Inventor 曾清海
Owner ZTE CORP
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