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Method, base station, relay station and terminal for sending relay system data

A data transmission method and relay system technology, applied in the field of data transmission, can solve the problems of wasting wireless resources, terminals do not get gains, etc., and achieve the effect of saving wireless transmission resources

Inactive Publication Date: 2009-04-22
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When using the relay station for data transmission, the base station must send the service content to be transmitted to the relay station in advance, and then transmit at the same time as the relay station, so that the same service information can be transmitted in the base station The wireless link is repeatedly transmitted twice, wasting limited wireless resources, and at the same time, the terminal does not get the gain of the two transmissions

Method used

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  • Method, base station, relay station and terminal for sending relay system data
  • Method, base station, relay station and terminal for sending relay system data
  • Method, base station, relay station and terminal for sending relay system data

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no. 3 approach

[0050] Refer below image 3 , to introduce the third embodiment of the present invention, about a base station. The base station 300 includes an encoding unit 301 and a sending unit 302 .

[0051] The processing unit 301 is configured to process service information to be sent to obtain a first symbol stream and a second symbol stream with different reliability.

[0052] The way the processing unit performs processing can be based on the actual application of the network and the user's expectations for service quality. Different encoding and modulation parameters are used to encode the service information to be sent to obtain the first symbol stream and the second symbol stream with different reliability. Two symbol streams can be classified as low reliability symbol stream or high reliability symbol stream according to different reliability.

[0053] The sending unit 302 is configured to send out the first symbol stream and the second symbol stream obtained by the processing...

no. 4 Embodiment approach

[0055] The fourth specific implementation manner of the present invention is introduced below. Regarding a relay station 400, refer to Figure 4 , the relay station 400 includes a receiving unit 401 , an information processing unit 402 and a sending unit 403 .

[0056] The receiving unit 401 is configured to receive the first symbol stream sent by the base station;

[0057] The information processing unit 402 is configured to generate a third symbol stream according to the first symbol stream received by the receiving unit 401;

[0058] The sending unit 403 is configured to simultaneously send the third symbol stream generated by the information processing unit 402 when the base station sends the second symbol stream;

[0059] Wherein, the reliability of the first symbol stream is different from the reliability of the second symbol stream; the reliability of the third symbol stream is the same as that of the second symbol stream.

[0060] In the relay station in this specifi...

Embodiment approach

[0061] The fifth implementation manner of the present invention is introduced below. For a terminal 500, refer to Figure 5 , the terminal includes a receiving unit 501 and a combining unit 502 .

[0062] The receiving unit 501 is configured to receive the first symbol stream and the second symbol stream sent by the base station, or the third symbol stream sent by the relay station;

[0063] A combining unit 502, configured to combine the first symbol stream and the second symbol stream received by the receiving unit 501; or combine the first symbol stream and the third symbol stream received by the receiving unit 501 to merge;

[0064] The reliability of the first symbol stream and the second symbol stream are different; the reliability of the second symbol stream and the third symbol stream are the same.

[0065] When the terminal is located within the coverage of the base station, the terminal successively receives the first symbol stream and the second symbol stream sent...

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Abstract

The invention relates to the communication field and discloses a method for sending data in a relay system. The method comprises the steps as follows: service information to be sent is processed to obtain a first symbolic stream and a second symbolic stream; the first symbolic stream and the second symbolic stream have different reliabilities; a base station sends the first symbolic stream; a relay station receives the first symbolic stream and generates a third symbolic stream according to the first symbolic stream; the third symbolic stream and the second symbolic stream have the same reliability; after the base station sends the first symbolic stream, the base station sends the second symbolic stream after a period of time; and the relay station sends the third symbolic stream at the same time. The invention also discloses a base station, a relay station and a terminal. By adopting the technical proposal provided by the invention, the service information to be sent is processed into the symbolic streams with different reliabilities and the symbolic streams is sent at different moments, thereby avoiding sending same data twice and saving wireless resource of a system.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data sending technology in a relay system. Background technique [0002] With the development of communication technology, a large number of multimedia services continue to emerge. When these multimedia services are transmitted, the data volume is large, the duration is long, and the delay is sensitive. In order to effectively utilize mobile network resources, various standardization organizations have proposed the concepts of broadcast and multicast services, such as: multimedia broadcast and multicast services ( Multimedia Broadcast and Multicast Service, MBMS); Broadcast and Multicast Service (BCMCS) proposed in the 3rd Generation Partnership Project 2 (3rd Generation Partnership Project, 3GPP2) organization; proposed in the IEEE 802.16e organization broadcast multicast service (Multi-Broadcast Service, MBS), etc. The above-mentioned broadcast and multicast services...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/18H04L27/34
Inventor 张霄竞杨炼
Owner SHANGHAI HUAWEI TECH CO LTD