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Method and device for implementing uplink synchronization HARQ (Hybrid Automatic Repeat Request) process in multi-base station cooperative receiving network

一种协作接收、接收装置的技术，应用在多基站协作接收网络领域，达到提高资源利用率和系统性能、保证后向兼容的效果

Active Publication Date: 2010-09-22
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the multi-base station cooperative reception network, the total time extension generated by the signal forwarding and combining between base stations reaches more than 10 milliseconds, which is contradictory to the response time limit of the synchronous uplink HARQ process in the LTE standard

Method used

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  • Method and device for implementing uplink synchronization HARQ (Hybrid Automatic Repeat Request) process in multi-base station cooperative receiving network
  • Method and device for implementing uplink synchronization HARQ (Hybrid Automatic Repeat Request) process in multi-base station cooperative receiving network
  • Method and device for implementing uplink synchronization HARQ (Hybrid Automatic Repeat Request) process in multi-base station cooperative receiving network

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no. 1 example

[0038] refer to image 3 and combine figure 1 The flow of the method according to the first embodiment of the present invention is introduced from a system perspective. in, image 3 A flow chart of a system method for implementing a synchronous uplink HARQ process in a multi-base station receiving network according to the first embodiment of the present invention is shown. Wherein, the serving base station 10 (hereinafter referred to as the base station 10) based on the wired backhaul link between the base stations receives and combines the forwarded signals and the total time delay (for example, 10 ms) generated is greater than the response time limit of the uplink HARQ process of the mobile terminal 1 (for example, , 4ms), that is, the base station 10 can complete signal combination only after the response time limit expires. Without loss of generality, the network and the mobile terminals therein are based on 3GPP Long Term Evolution or a further evolution of 3GPP Long T...

no. 2 example

[0053] refer to Figure 5 and combine figure 1 The flow of the method according to the second embodiment of the present invention is introduced from a system perspective. Wherein, since the serving base station and the mobile terminal in the second embodiment are different from those in the first embodiment, they are respectively marked as a base station 10' and a mobile terminal 20'.

[0054] Figure 5 A flow chart of a system method for implementing a synchronous uplink HARQ process in a multi-base station receiving network according to the second embodiment of the present invention is shown. Without loss of generality, the network and the mobile terminals therein are based on the further evolution of the 3GPP long-term evolution. The synchronous uplink HARQ process has a response time limit that matches the time delay of the multi-base station cooperative reception network. The mobile terminal 20' sends the second After the uplink signal, wait for the indication informat...

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Abstract

The invention provides a method for implementing an uplink synchronization HARQ (Hybrid Automatic Repeat Request) process in a multi-base station cooperative receiving network. In the method, according to a specific embodiment, a service base station provides a receiving response according to a response time limit for an uplink synchronization HARQ process with a smaller response time limit and formally directs a terminal to retransmit or start a new transmission after finishing the combination. According to another embodiment, the uplink synchronization HARQ process has a response time limitmatched with the time delay of the multi-base station receiving network so that the service base station sends a receiving response or a control signaling on a PDCCH (Packet Dedicated Control Channel) after finishing the combination. Thus uplink synchronization HARQ in a multi-base station cooperative receiving environment in LTE (Long Term Evolution) and LTEA (LTE-Advanced) networks can be realized.

Description

technical field [0001] The present invention relates to a multi-base station cooperative reception network, in particular to a method and device for realizing an uplink HARQ process in a multi-base station cooperative reception network. Background technique [0002] In the 3GPP long-term evolution (LTE) network and the further evolution of the 3GPP long-term evolution (LTE-Advanced, LTEA) network, multi-point coordinated transmission and reception (Coordinated multiple point transmission and reception, CoMP) is very useful for improving system performance. Competitive options. [0003] Among them, in the uplink inter-cell CoMP (also referred to as multi-base station cooperative reception in this paper), the core idea is: for a mobile terminal, the system will determine a serving base station and at least one auxiliary base station, and the uplink signal sent by the mobile terminal will be served The base station and each auxiliary base station receive it, and then the auxil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04B7/02
CPCH04L2001/0092H04L1/1854H04L1/1812H04L1/1845H04L2001/0093H04B7/024
Inventor 杨涛尤明礼朱旭东
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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