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Method and device for transmitting user data at multiple points with uplink cooperation

A user data, multipoint transmission technology, applied in the field of communication networks, can solve the problems of increasing joint processing complexity, large backhaul overhead, etc., and achieve the effect of reducing joint processing complexity, reducing backhaul overhead, and saving backhaul overhead.

Active Publication Date: 2013-06-05
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The above-mentioned CoMP uplink data transmission scheme causes a large amount of backhaul overhead, and because the serving base station needs to jointly detect and combine all adjacent cells in the CoMP cluster, the joint processing complexity is increased

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  • Method and device for transmitting user data at multiple points with uplink cooperation
  • Method and device for transmitting user data at multiple points with uplink cooperation
  • Method and device for transmitting user data at multiple points with uplink cooperation

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Embodiment Construction

[0027] figure 1 A schematic diagram of a network topology structure showing a specific application scenario of the present invention. Wherein, the base station 1a is the serving base station of the mobile station 2a, and the base station 1b and the base station 1c are adjacent base stations of the base station 1a, and are used for cooperating with the serving base station 1a to serve the mobile station 2a. The serving base station 1a in the present invention not only completes the processing and transmission of data services, but also is responsible for the control function of CoMP transmission, which is equivalent to a CoMP transmission management device. figure 1 Also shown are the communication links between base station 1a, base station 1b and base station 1c, respectively, and mobile station 2a, represented by a lightning bolt symbol. 3a represents the communication link between base station 1a and mobile station 2a, 3b represents the communication link between base stat...

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Abstract

The present invention provides an uplink progressive multi-point coordinated MIMO processing scheme. A coordinated processing management equipment determines whether it is necessary to send ACK or NACK message to neighboring base stations in the same CoMP cluster; when it is necessary to send ACK message to the neighboring base stations, the ACK message is sent to all the neighboring base stations in the cluster which have not participated in joint to inform each neighboring base stations that it is not necessary to send user data to the coordinated processing management equipment; when it is necessary to send NACK message to the neighboring base stations, the NACK message is sent to at least one neighboring base station in the cluster which has not participated in joint to inform the at least one base stations to send user data to the coordinated processing management equipment; according to the user data obtained by the base station and the user data from the at least one neighboring base stations, the coordinated processing management equipment performs joint detection and combination. Through the application of solution of the invention, the backhaul cost has been saved and the complexity of the |system realization is reduced.

Description

technical field [0001] The present invention relates to a communication network, in particular to a wireless cooperative multipoint transmission communication network. Background technique [0002] Cooperative Multi-Point transmission / reception (CoMP) has been accepted by LTE-Advanced (Long Term Evolution-Advanced) as a solution to improve cell average and edge throughput. [0003] In the existing uplink transmission, there are at least two implementations of CoMP joint signal processing as follows: [0004] 1) Network MIMO (Multiple Input and Multiple Output, multiple input multiple output) [0005] In the network MIMO (network MIMO) of coherent joint detection, both channel state information and data need to be sent to the CoMP transmission management equipment, which is very complex, so it has not been adopted by IEEE802.16m. This network MIMO The mode is more suitable to be implemented inside a base station, for example, between different sectors of a base station. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08
CPCH04L2001/0093H04L1/1854H04B7/024H04L2001/0097H04B7/0626H04B7/0623H04L1/1874
Inventor 尤明礼朱旭东杨涛
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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