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

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

Active Publication Date: 2010-09-22
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Description
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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 invention discloses an uplink gradual multi-point cooperation multiple input multiple output (MIMO) processing scheme. A cooperative processing management device judges whether an acknowledgement (ACK) message or a negative acknowledgement (NACK) message needs sending to adjacent base stations in the same CoMP cluster or not; when the ACK message needs sending to the adjacent base stations, sending the ACK message to all adjacent base stations in the CoMP cluster, which do not participate in jointing, so as to inform each adjacent base station of not sending user data to the cooperative processing management device; when the NACK message needs sending to the adjacent base stations, sending the NACK message to all adjacent base stations in the CoMP cluster, which do not participate in jointing, so as to inform at least one adjacent base station of sending the user data to the cooperative processing management device; and the cooperative processing management device performs joint detection and combination according to the user data acquired from a link and the user data from the at least one adjacent base station. Due to the adoption of the scheme of the invention, the back transmission cost is saved and the realization complexity of a system is lowered.

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. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L1/00H04L1/16H04L1/18H04B1/707
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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