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S-PARC single-double flow selection method used for TD-HSPA+MIMO system

A single-dual-stream, selective technology, which is applied in transmission systems, baseband system components, diversity/multi-antenna systems, etc., can solve the problem that the selection criteria do not consider the difference in scenarios where the base station continuously schedules the same user, and affects the base station single-dual stream selection, etc. question

Inactive Publication Date: 2009-12-23
COMBA TELECOM SYST CHINA LTD
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Problems solved by technology

Because the different mapping methods from CQI to TBS will directly affect the MCS (modulation and coding method) of each data stream selected by the base station, thus affecting the single and dual stream selection of the base station
[0015] C. The selection criteria do not consider the scenario difference of whether the base station continuously schedules the same user

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  • S-PARC single-double flow selection method used for TD-HSPA+MIMO system
  • S-PARC single-double flow selection method used for TD-HSPA+MIMO system
  • S-PARC single-double flow selection method used for TD-HSPA+MIMO system

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[0050] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and the simulation of the embodiments.

[0051] see figure 2 , introduce the specific process of a new S-PARC single and double flow selection method for TD-HSPA+MIMO system of the present invention:

[0052] (1) The mobile station measures the channel quality parameters of the downlink, and feeds back the measurement results to the base station;

[0053] (2) The base station receives the downlink channel quality information fed back by the mobile station, and estimates the channel quality of its uplink channel to obtain the impulse response of the mobile station's uplink channel; then calculates the uplink channel quality information of the mobile station under different subframes. The time correlation coefficient of the channel impulse response is obtained to ob...

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Abstract

An S-PARC single-double flow selection method used for a TD-HSPA+MIMO system, comprising steps of: receiving channel quality information of a down link fed back by a mobile station with a base station, estimating channel quality of the up link thereof; calculating coefficients related to time of impulse response of an up link in different subframes, after obtaining channel change state information; comprehensively considering factors such as channel time variation characteristics, base station average transmission error rate, effect of continuously scheduling of base stations and the like according to the fed information of the mobile station to pre-process; and then carrying out mapping for transmitted data blocks and selection between single flow and double flow so as to enhance average throughput and improve primary transmission accuracy of the system. The method does not change the prior protocol system, does not need to increase signaling cost, only needs to pre-process on the base station and has low complexity of operation, but can obviously improve the transmission performance of the system and has more obvious system gain especially when the mobile station is moved at high speed or the position of the base station is not good.

Description

technical field [0001] The present invention relates to a S-PARC single-dual-stream selection method for TD-HSPA+MIMO system. Specifically, it relates to a method for selecting single-dual streams after the base station preprocesses the channel information fed back by users to increase The invention discloses a system average throughput and a method for improving the accuracy rate of first transmission, belonging to the technical field of wireless multi-antenna communication systems. Background technique [0002] Multiple input and multiple output MIMO (multiple input and multiple output), as a multi-antenna technology, can make full use of the spatial characteristics of the channel to improve the system capacity and spectrum efficiency of the wireless link. Therefore, MIMO technology has broad research and application prospects both in theory and in practical systems. [0003] The 3GPP RAN#11 meeting adopted the MIMO technology as an optional method for the FDD (Frequency ...

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Application Information

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IPC IPC(8): H04W24/00H04B17/00H04B7/06H04L25/02
Inventor 彭木根张翔刘萍慧王文博李勇
Owner COMBA TELECOM SYST CHINA LTD
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