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Method for sending and receiving control information and apparatus, transmission system thereof

A technology of control information and transmission method, applied in the fields of receiving method and device, control information transmission, transmission system, can solve the problems of high transmission error probability, inability to improve system capacity, decrease in system capacity, etc., and achieve control information overhead. The effect of reducing and saving energy consumption and increasing system capacity

Active Publication Date: 2015-05-27
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The gain of the semi-static scheduling scheme to reduce the control information overhead depends on the retransmission ratio. If the channel is poor and the retransmission ratio is high, the downlink control overhead will increase because the retransmission requires dynamic scheduling, resulting in a rapid decline in system capacity.
In addition, if AMC is not used for the first transmission of fixed resources, it will lead to either a high error probability or a waste of resources.
[0013] To sum up, the solutions for reducing control information in the prior art have the problems of high probability of transmission errors and failure to improve system capacity

Method used

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  • Method for sending and receiving control information and apparatus, transmission system thereof
  • Method for sending and receiving control information and apparatus, transmission system thereof
  • Method for sending and receiving control information and apparatus, transmission system thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] To illustrate the first technical solution for sending control information proposed by the embodiment of the present invention, refer to the specific figure 2 As shown, the sender process is as follows:

[0065] Step 200: the sending end detects whether the silent period arrives, and when detecting the arrival of the silent period, sends indication information for indicating the arrival of the silent period;

[0066] Step 201: The sender does not detect the arrival of the silent period, that is, when it is in the active period, if it needs to send data, it is determined whether the data packet to be sent is the first data packet in the active period, and if so, go to step 202 and continue to execute, Otherwise, go to step 203;

[0067] Step 202: select a reasonable MCS and available resources, and generate corresponding control information according to the selected MCS and available resources, and send the generated control information on a corresponding control chann...

Embodiment 2

[0085] To illustrate the second technical solution for sending control information proposed by the embodiment of the present invention, image 3 The data transmission process of the monitoring mode of the receiving end is given. The monitoring mode of the receiving end requires that the receiving end is similar to the 3GPPR5 HSDPA operation, that is, the receiving end continuously monitors its corresponding control information. The next service information is received according to the MCS and occupied resources indicated by the new control information, otherwise, the service information is received according to the control information received on the control channel last time.

[0086] The sender process is as follows:

[0087] Step 300: the sending end detects whether the silent period arrives, and when detecting the arrival of the silent period, sends indication information for indicating the arrival of the silent period;

[0088] Step 301: The sender does not detect the ar...

Embodiment 3

[0117] To illustrate the third technical solution for sending control information proposed by the embodiment of the present invention, refer to Figure 5 As shown, the sender process is as follows:

[0118] Step 500: the sending end detects whether the silent period arrives, and when detecting the arrival of the silent period, sends indication information for indicating the arrival of the silent period;

[0119] Step 501: The sender does not detect the arrival of the silent period, that is, when it is in the active period, if it needs to send data, it determines whether the data packet to be sent is the first data packet in the active period, if it is, go to step 502, otherwise go to step 504 ;

[0120] Step 502: According to information such as wireless channel, data volume and load, determine whether to change the MCS or resource allocation, if necessary, select a reasonable MCS and resources, and perform step 503, otherwise, keep the original MCS and resources, and send th...

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Abstract

The invention discloses a method for sending control information, which comprises the following steps: sending indication information for indicating arrival of a quiet period no earlier than sending last data information of each activation period; generating the control information of the activation period before the arrival of the next activation period; and sending the generated control information to a corresponding control channel no later than sending the first data information of the activation period. At the same time, the invention discloses a method for receiving the control information, which comprises the following steps: judging whether the indication information for indicating the arrival of the quiet period is received; and converting to the corresponding control channel to monitor and receive the control information of the next activation period when receiving the indication information for indicating the arrival of the quiet period. Correspondingly, the invention also discloses a device for sending and receiving the control information and a system for transmitting the control information. By adopting the proposal, the method can effectively reduce expense of the control information so as to improve capacity of the system, and can save energy consumption at the receiving end.

Description

technical field [0001] The present invention relates to the field of communications, and in particular, to a method for sending and receiving control information, a device thereof, and a transmission system. Background technique [0002] With the rapid development of informatization, people's life is more and more inseparable from the various services provided by the Internet. People hope to obtain convenient Internet services at any place and at any time, the so-called ever-online concept, and the best way to achieve this goal is the packet domain bearer of the wireless network. [0003] When voice (or similar services) are carried in the packet domain, since voice frames are usually very small, and voice services are very sensitive to delay, delay jitter and data error rate, it is required that the voice frames must be transmitted in time without any Multiple voice frames are concatenated and then transmitted. However, if the transmission of each voice frame is accompani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 李男陈书平刘光毅黄宇红韩晶
Owner CHINA MOBILE COMM GRP CO LTD