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Method, base station and user terminal for sending and receiving data

A data sending method and user terminal technology, applied in the fields of user terminals, data sending methods, data receiving methods and base stations, capable of solving problems such as allocation of different wireless transmission resources and data transmission failures

Inactive Publication Date: 2011-04-20
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Embodiments of the present invention provide a data sending method, a data receiving method, a base station, and a user terminal to solve the problem in the prior art that the base station cannot guarantee that different wireless transmission resources are allocated to each user terminal performing data interaction with the base station at the same time , thus causing the problem of data transmission failure

Method used

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  • Method, base station and user terminal for sending and receiving data
  • Method, base station and user terminal for sending and receiving data
  • Method, base station and user terminal for sending and receiving data

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Embodiment Construction

[0038] The main realization principles, specific implementation modes and corresponding beneficial effects of the technical solutions of the embodiments of the present invention will be described in detail below in conjunction with each accompanying drawing.

[0039] like image 3 As shown, in Embodiment 1 of the present invention, the flow chart of the data sending method when the base station sends downlink data to the user terminal located within the coverage of the base station, the specific processing process is as follows:

[0040] Step 31, the base station determines the irrelevant first codeword and the second codeword;

[0041] The base station pre-stores two uncorrelated matrices [i 1 , i 2 ,Λ,i n ] and [j 1 , j 2 ,Λ,j m ], then select a codeword i and j from the two matrices respectively, i and j are irrelevant, i.e. i*j=0;

[0042] Step 32, the base station sends the determined first codeword and second codeword to the first user terminal and the second user...

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Abstract

The present invention discloses a method, a base station and a user terminal for sending and receiving data. The base station determines a first code and a second code irrelevant to each other, and sends the first code and second code having been determined to a first user terminal and a second user terminal respectively, wherein the frequency offset of the first user terminal is opposite to thatof the second user terminal. The base station scrambles the down-link data being sent to the first user terminal according to the first code, and scrambles the down-link data being sent to the seconduser terminal according to the second code. And, the base station sends the corresponding down-link data having been scrambled respectively to the first user terminal and the second user terminal according to the same frequency point, time slot and code track. By adopting the technical solution, the invention solves the problem of the prior art that the base station is unable to simultaneously distribute different wireless transmission resource to each user terminal which has data-interaction with the base station, which may cause the failure of data transmission.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a data sending method, a data receiving method, a base station, and a user terminal. Background technique [0002] In a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access) system, if a user terminal is located within the coverage of a base station, then the base station can send downlink data to the user terminal, and the user terminal The terminal can also send uplink data to the base station. like figure 1 As shown, it is a flow chart of the base station sending downlink data to the user terminal in the prior art, and its specific processing process is as follows: [0003] Step 11, the base station 1 allocates frequency points, time slots and code channels for receiving downlink data to the user terminal 1; [0004] Step 12, the base station 1 notifies the user terminal to receive downlink d...

Claims

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Application Information

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IPC IPC(8): H04W28/04H04W88/08
Inventor 余立王东
Owner CHINA MOBILE COMM GRP CO LTD
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