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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is obviously disadvantageous to occupy too many resources in the L1/L2 control channel
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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

Experimental program
Comparison scheme
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Example Embodiment

[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, the size of the RB allocation field is where N is the number of RBs in a subframe of the system, Indicates rounded up. The terminal can know the number of RBs in a subframe of the system according to the system bandwidth. If the terminal does not know the system bandwidth, it will not know how to parse the RB allocation field after receiving the uplink scheduling grant signaling, unless the system bandwidth related information is included in the uplink scheduling grant signaling.

[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 There is a possibility that 9 bits are required for representation at this time, s...

Example Embodiment

[0038] Example 2: For downlink RBs

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

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

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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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