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Random access response transmission method and device

A random access response and transmission method technology, which is applied in the field of random access response transmission method and device, can solve problems affecting user satisfaction, poor network capacity, unreachability, and business fault tolerance, and achieve optimal random access The effect of improving the entry process, enhancing the acceptance capacity, and improving the reliability and stability of transmission

Active Publication Date: 2012-05-16
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

[0006] To sum up, there are the following technical problems in the prior art: due to the transmission reliability of MSG2 in the random access process, the network’s acceptance capacity is poor, and the balance with the fault tolerance capacity of the service cannot be achieved, and even the Users at the edge of the cell or with poor channel quality cannot be connected to the network, thus affecting user satisfaction

Method used

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  • Random access response transmission method and device
  • Random access response transmission method and device
  • Random access response transmission method and device

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Embodiment Construction

[0036] The main idea of ​​the present invention is to carry MSG1 transmission power and / or transmission times information on the preamble sequence of MSG1, and the system side obtains the path loss and channel quality between the terminal and the system side according to the transmission power or transmission times of MSG1, And according to the obtained path loss or channel quality information, the transmit power and MCS (modulation and demodulation scheme) of MSG2 are adjusted to improve the transmission reliability of MSG2, thereby optimizing the random access process.

[0037] Based on the above ideas, the present invention provides a random access response transmission method, specifically adopting the following technical solutions:

[0038] When the terminal selects the preamble sequence of the RACH channel to send MSG1, the selected preamble sequence carries information on the transmission power and / or number of times of transmission of MSG1;

[0039] The system receives...

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Abstract

The invention discloses a random access response transmission method and device. When a preamble sequence of a random access channel is selected by a terminal to transmit MSG 1, the terminal bears the transmission power and / or transmission frequency information of the MSG 1 on the selected preamble sequence; a system receives the MSG1 and obtains the pass loss between the terminal and the system side according to the transmission power and / or transmission frequency information of the MSG 1, borne on the preamble sequence, and adjusts the transmission scheme of MSG2 according to the value of the path loss. By adoption of the random access response transmission method and device, the transmission reliability and stability of the MSG 2 can be improved, furthermore, the random access process is optimized and the network admission capability is enhanced.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and more specifically, to a method and device for transmitting a random access response. Background technique [0002] In the current wireless cellular communication system, there is basically no power control in the random access process, no MCS (Modulation and Coding Scheme, modulation and coding scheme), and no HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) for MSG2 (Random Access Response). request) mechanism. Therefore, a problem arises for the reliable transmission of MSG2 in the random access procedure. [0003] For the processing of MSG2, the basis of MCS and power control has not been provided yet. When the UE (User Equipment, user equipment) is at the edge of the cell or the channel quality is relatively poor, if the MSG2 in the random access process cannot be received correctly, the UE will not be able to access the network, and therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
CPCH04W74/0833
Inventor 韩小江丁红杜高鹏张现周
Owner ZTE CORP
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