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An allocation method for uplink synchronous code

A distribution method and a technology of synchronous codes, which are applied in communication between multiple stations, electrical components, digital transmission systems, etc., can solve problems such as the impact of user experience, the reduction in the number of users who successfully access the system, and the unreasonable static configuration scheme, etc.

Inactive Publication Date: 2008-08-13
TD TECH COMM TECH LTD
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Problems solved by technology

When the number of HSUPA users increases, if many HSUPA users initiate uplink synchronization establishment at the same time, since the SYNC_UL code words allocated to HSUPA services are less, the SYNC_UL selected by these HSUPA users who need to establish uplink synchronization is very easy to generate Conflicts, resulting in synchronization failures, resulting in a decrease in the number of users who successfully access the system, and users also need to retry to establish synchronization
[0007] It can be seen that the existing SYNC_UL static configuration scheme is not reasonable enough to meet the needs of the actual network environment, and access conflicts are likely to occur, resulting in a decrease in system access performance and at the same time affecting user experience

Method used

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  • An allocation method for uplink synchronous code
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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0033] The basic idea of ​​the present invention is to dynamically adjust the SYNC_UL resource assigned to the HSUPA service in real time according to the change of the actual network information. For example, when initially configuring SYNC_UL, allocate fewer SYNC_UL codewords for HSUPA services, such as one; as the number of HSUPA users increases, allocate more SYNC_UL codewords for HSUPA services to meet the growing HSUPA service requirements .

[0034] see figure 1 As shown, the uplink synchronization code allocation method provided by the present invention mainly includes the following steps:

[0035] Step 101: setting a reallocation reference value;

[0036] Step 102: After initially configuring the SYNC_UL for the HSUPA service, the RNC re-all...

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Abstract

The invention provides a distributing method of uplink synchronized code, which includes setting reference for redistributing, initially configuring uplink synchronized code (SYNC_UL) for high speed uplink packet access (HSUPA) service, then redistributing SYNC_UL by radio network controller for HSUPA service according to the set reference for redistributing. The invention can improve rationality of uplink synchronized code's distribution, reduce access collision caused by unreasonable distribution of SYNC_UL, improve access performance of the system, and bring good feeling to the user in the same time.

Description

technical field [0001] The invention relates to resource allocation technology in mobile communication, in particular to an uplink synchronization code allocation method. Background technique [0002] Uplink synchronization technology is one of the key technologies in Time Division Duplex (TDD) systems. The so-called uplink synchronization means that uplink signals from different user equipments (UEs) at different distances are required to arrive at the base station (Node B) synchronously. For TDD systems, uplink synchronization is of great benefit in improving system performance and simplifying base station receiver design. [0003] The uplink synchronization code (SYNC_UL) is used to distinguish different UEs for uplink synchronization access. There are 256 different SYNC_ULs in the whole system, which are divided into 32 groups with 8 in each group. When the UE wants to establish uplink synchronization, it randomly selects one from the known SYNC_UL, and transmits it i...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04Q7/22H04B7/26H04L12/56
Inventor 王浩然沈东栋常永宏陈迎宋爱慧
Owner TD TECH COMM TECH LTD
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