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Response to random access signal, random access method and mobile communication system

A random access signal and random access response technology, which is applied in communication between multiple stations, transmission system, wireless communication, etc., can solve the problems of occupation, complex state control, multiple UE-ID resources, etc., and achieve simplification The scheduling process and state control are concise and clear, and the effect of saving system resources

Active Publication Date: 2008-02-27
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a random access signal response, a random access method and a mobile communication system to solve the problem of occupying more UE-ID resources and complicated state control during the UE asynchronous random access process. question

Method used

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  • Response to random access signal, random access method and mobile communication system
  • Response to random access signal, random access method and mobile communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Embodiment 1. A method for responding to a random access signal. After the eNB receives the random access signal sent by the UE in the IDLE state, L1 calculates the TA transmitted by the UE, and L2 assigns the TA to the UE according to the information carried in the random access signal. Uplink resources, and according to the reason, it is judged that the state of the UE that initiates access is idle, L3 will allocate a UE-ID, and L1 generates a random access response signal, the random access response signal includes UE signature ID, TA, power information and the allocated uplink resources, write the allocated UE-ID into the UE-ID data field, and the L1 sends the random access response signal to the UE through the L1 / L2 signaling channel in a special format.

[0035] After receiving the random access response signal, the UE extracts the UE-ID number assigned to the UE by the eNB, and sends a scheduling request message to the eNB on the allocated uplink resource according...

Embodiment 2

[0036] Embodiment 2, a method for responding to a random access signal. After the eNB receives the random access signal sent by the UE in the ACTIVE state, L1 calculates the TA transmitted by the UE, and L2 assigns the TA to the UE according to the information carried in the random access signal. For uplink resources, according to the reason, it is judged that the state of the UE that initiates access is the active state. L3 does not need to allocate UE-ID, and L1 generates a random access response signal. The random access response signal includes the UE’s signature ID, TA, power information and For the allocated uplink resources, the reserved UE-ID is written into the UE-ID data field, and the L1 sends the random access response signal to the UE through the L1 / L2 signaling channel of a special format.

[0037] After receiving the random access response signal, the UE ignores the reserved UE-ID, and sends a scheduling request message to the eNB on the allocated uplink resource...

Embodiment 3

[0038] Embodiment 3. A method for responding to a random access signal. After the eNB receives the random access signal sent by the UE, L1 calculates the TA transmitted by the UE, and L2 judges that the UE is only for uplink synchronization according to the information carried in the random access signal. Then there is no need to allocate uplink resources to the UE, and L1 sends the UE's signature ID, TA, uplink resources (indicated to be zero) and reserved UE-ID to the UE through the L1 / L2 signaling channel in a special format.

[0039] After receiving the random access response signal, the UE adjusts the uplink synchronization timing according to the TA information in it, that is, ends the random access process.

[0040] Correspondingly, referring to Figures 1 to 4, a random access method includes the following steps:

[0041] 1. Reserve a UE-ID in the system as a reserved UE-ID, and this reserved UE-ID will not be assigned to any UE

[0042] 2. The UE sends a random access...

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Abstract

This invention discloses a responding and accessing method for random access signals and a mobile communication system including the folowing steps: 1, preserving a terminal ID in the system as a kept terminal ID, 2, an evolution base station carries a related terminal ID in a randomly accessed responding signal based on the state of the terminal, 3, the station transmits the randomly accessed responding signal to the terminal by a signaling channel of a specific format physical layer / data link layer. This invention keeps a terminal ID only so as to save energy, when the base station dispatches the terminal or transmits data to the terminal, it can differentiate the terminal starting up the access and the one being dispatched and having communication by the distributed terminal ID or the kept ID.

Description

technical field [0001] The present invention relates to a random access signal response method and a terminal (UE, User Equipment) random access method, in particular to a random access signal response, random access method and a mobile communication system. Background technique [0002] As an important link in the wireless access process, the random access process can be used to support mobile station access call initiation, and can also be used for services such as paging response, short message and burst data. [0003] In the third-generation mobile communication long-term evolution standard (LTE), the UE asynchronous random access method includes the following steps: the UE that initiates the access sends a random access signal to the evolved base station (eNB); the eNB receives the random access signal After receiving the signal, calculate the uplink synchronization information of the UE, and allocate uplink resources to the UE according to the information carried in th...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04B7/216H04B7/005H04B7/26H04W72/04H04W74/08
CPCY02B60/50Y02D30/70
Inventor 蒋守宁毕海洲蒋海林
Owner DATANG MOBILE COMM EQUIP CO LTD
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