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Transmission method of random access response, transmission base station and receiving terminal

A technology of random access response and random access preamble, applied in the field of communications, can solve problems such as wasting system resources, and achieve the effects of reducing resource waste, improving utilization, and avoiding excessive restrictions.

Inactive Publication Date: 2009-08-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a random access response transmission method, transmission base station and receiving terminal, and solve the problem of wasting system resources by sending random access responses when an uplink component carrier corresponds to multiple downlink component carriers

Method used

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  • Transmission method of random access response, transmission base station and receiving terminal
  • Transmission method of random access response, transmission base station and receiving terminal
  • Transmission method of random access response, transmission base station and receiving terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0172] There are four 20MHz component carriers in the downlink, namely D1, D2, D3, and D4; there are two 20MHz component carriers in the uplink, namely U1 and U2.

[0173] The downlink component carriers are divided into two groups, that is, N=2. Such as Figure 4 As shown in the figure, Indicates the downlink synchronization signal, Indicates a broadcast channel. The first group contains {D1, D2}, which corresponds to U1; the second group contains {D3, D4}, which corresponds to U2. That is, a terminal whose downlink is synchronized to D1 or D2 sends a random access preamble on the uplink carrier U1; a terminal whose downlink is synchronized to D3 or D4 sends a random access preamble on the uplink carrier U2.

[0174] The base station notifies the terminal with broadcast signaling: the terminal with downlink synchronization in the first group of downlink component carriers receives a random access response on D1; the terminal with downlink synchronization in the second g...

Embodiment 2

[0178] There are four 20MHz component carriers in the downlink, namely D1, D2, D3, and D4; there are two 20MHz component carriers in the uplink, namely U1 and U2.

[0179] The downlink component carriers are divided into two groups, that is, N=2. Such as Figure 5 As shown in the figure, Indicates the downlink synchronization signal, Indicates a broadcast channel. The first group contains {D1, D2}, which corresponds to U1; the second group contains {D3, D4}, which corresponds to U2. That is, a terminal whose downlink is synchronized to D1 or D2 sends a random access preamble on the uplink carrier U1; a terminal whose downlink is synchronized to D3 or D4 sends a random access preamble on the uplink carrier U2.

[0180] In the first group, the random access response is always sent on D1, and in the second group, the random access response is always sent on D3

[0181] According to the uplink component carrier used by the terminal to send the preamble, the base station can...

Embodiment 3

[0183] There are four 20MHz component carriers in the downlink, namely D1, D2, D3, and D4; there are two 20MHz component carriers in the uplink, namely U1 and U2.

[0184] The downlink component carriers are divided into two groups, that is, N=2. Such as Figure 6 As shown in the figure, Indicates the downlink synchronization signal, Indicates the broadcast channel, □ indicates the random access preamble with an even number, Indicates a random access preamble with an odd sequence number. The first group contains {D1, D2}, which corresponds to U1; the second group contains {D3, D4}, which corresponds to U2. That is, a terminal whose downlink is synchronized to D1 or D2 sends a random access preamble on the uplink carrier U1; a terminal whose downlink is synchronized to D3 or D4 sends a random access preamble on the uplink carrier U2.

[0185] In the first group, the downlink synchronous terminals on D1 use random access preambles with even numbers, and the downlink sync...

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Abstract

The invention discloses a transmission method of random access response, a transmission base station and a receiving terminal, and solves problem of system resource waste by transmitting random access response when up member carrier corresponds to a plurality of down member carriers. A transmission method includes that the base station determines to transmit one down member carrier of the random access response according to notification of the terminal, and the base station only transmits the random access response on the down member carrier; or the base station notifies the terminal that the base station transmits one down member carrier of the random access response, and the base station transmits the random access response on the down member carrier; or the base station and the terminal are agreed in advance that one down member carrier is used for bearing the random access response, and the base station transmits the random access response on the down member carrier.

Description

technical field [0001] The present invention relates to the LTE-Advanced system in the communication field, and in particular to a method for transmitting a random access response, as well as a transmitting base station and a receiving terminal. Background technique [0002] The LTE-Advanced system (Long Term Evolution-Advanced for short, LTE-A system) is a next-generation evolution system of the LTE system, which aggregates several carriers to support higher bandwidth and obtain higher data rates. Each aggregated carrier is called a component carrier, such as figure 1 shown. The component carriers may be continuous or discontinuous. [0003] The downlink component carriers in the LTE-A system may have synchronization channels (including primary synchronization channels and secondary synchronization channels) and broadcast channels. Here, a broadcast channel on a "downlink component carrier" refers to a channel that carries broadcast messages of a certain carrier, several...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04B7/26
Inventor 郝鹏朱鹏喻斌
Owner ZTE CORP
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