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Indication and confirmation method and device for time-frequency resource

A technology of time-frequency resources and instructions, applied in the field of communication, can solve problems such as unspecified, and achieve the effect of perfecting the system processing flow and improving system performance

Active Publication Date: 2013-09-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to different application environments and manufacturers, the system bandwidth supported by each transmission point in the cooperative set may be different in actual work, and the content of the resource indication is related to the system bandwidth. In this case (that is, in CoMP transmission ) needs to determine the system bandwidth of which transmission point in the cooperative set to perform resource indication. At present, no clear method has been developed

Method used

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  • Indication and confirmation method and device for time-frequency resource
  • Indication and confirmation method and device for time-frequency resource
  • Indication and confirmation method and device for time-frequency resource

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Embodiment Construction

[0044] In order to improve the protocol flow, in the embodiment of the present invention, a method for indicating and confirming time-frequency resources in CoMP transmission is formulated.

[0045] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046]In the embodiment of the present invention, a transmission point is defined as a group of transmission antennas with the same geographic location, and different sectors of the same site correspond to different transmission points. In CoMP transmission, the transmission points that directly and / or indirectly participate in sending data to the UE form a coordinated transmission set, where the transmission point that sends PBCH (physical broadcast channel, physical broadcast channel) signaling to the UE is called a service point, and others can called non-service points. At the same time, in order to implement CoMP transmission, the UE needs to feed ...

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Abstract

The invention relates to the field of communication and discloses an indication and confirmation method and device for a time-frequency resource. The method includes the steps that a base station notifies UE of system bandwidths of at least two transmission points, selects the system bandwidth of at least one transmission point from the system bandwidths as a target bandwidth, allocates the time-frequency resource to the UE according to the target bandwidth and carries out time-frequency resource indication in a downlink signal based on the target bandwidth; the UE selects the target bandwidth used by the base station from the acquired system bandwidths of at least two transmission points with the blind test method after receiving the downlink signal and confirms the time-frequency resource allocated by the base station side based on the acquired target bandwidth. Thus, under the condition that system bandwidths of all transmission points in a cooperation set possibly differ from one another, agreed indication of the time-frequency resource is achieved in CoMP transmission; therefore, the UE can receive data effectively based on the acquired time-frequency resource, procedures of system processing in CoMP transmission are improved, and system performance is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for indicating and confirming time-frequency resources. Background technique [0002] LTE-A (Long Time Evolved-Advanced, long-term evolution upgrade) system adopts the same frequency network, which greatly improves the spectrum utilization rate, but also causes serious signal fading of users at the edge of the cell and suffers from high interference from other cells. Interference, if signal fading and interference problems are not dealt with, will seriously affect the experience of edge users. CoMP (Coordinated Multi-Point) technology can not only improve signal quality but also reduce inter-cell interference by introducing information interaction and joint transmission between multiple cells, thereby greatly improving the data transmission performance of cell edge users. [0003] The current coordinated multi-point transmission schemes can be roughly divide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 张然然高秋彬彭莹沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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