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Ascending reinforced accidental access method, apparatus and equipment

A technology of random access and random access request, which is applied in the direction of selection devices, code division multiplexing systems, electrical components, etc., and can solve problems such as inability to support compatible N-frequency points or multi-carrier TD-SCDMA systems

Inactive Publication Date: 2009-02-18
CHINA ACAD OF TELECOMM TECH
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AI Technical Summary

Problems solved by technology

[0008] However, there is currently no random access method for uplink enhancement in N-frequency or multi-carrier TD-SCDMA systems
Moreover, the existing uplink enhanced random access method is only suitable for single-frequency point or single-carrier TD-SCDMA system, and cannot support and be compatible with N-frequency point or multi-carrier TD-SCDMA system

Method used

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  • Ascending reinforced accidental access method, apparatus and equipment
  • Ascending reinforced accidental access method, apparatus and equipment

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Embodiment Construction

[0069] The core idea of ​​the present invention is: the E-RUCCH sent by the terminal can be sent not only on the primary carrier, but also on the secondary carrier, and send a random access request on the corresponding carrier that accesses the E-RUCCH; Receive a random access request and send feedback information to complete uplink enhanced random access. In this way, on the one hand, the main carrier and the auxiliary carrier share the access requests of all frequency points in the TD-SCDMA cell, which can support more access to the number of uplink enhanced users, thereby improving the uplink enhanced random access ability. On the other hand, all uplink enhanced users in the TD-SCDMA cell can use both the main carrier and the auxiliary carrier to send random access requests, so the collision probability of uplink pilot codes is small, thereby reducing the occurrence of random access collisions. and the probability of random access delay problems.

[0070] In order to make...

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Abstract

This invention discloses a random access method with enhanced ascending in Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system. The method includes following steps: a terminal sends an ascending pilot channel on the selected main carrier or auxiliary carrier based on a pre-distributed ascending pilot code; a base station accesses the ascending pilot channel based on the ascending pilot code; the terminal sends a random access request on the ascending access channel; and the base station distributes the wireless resource for the terminal corresponding to the current carrier sending the ascending access channel. This invention also discloses a random access device with enhanced ascending in Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, a terminal side device and a base station device. All the method, device and apparatus adopting this invention are capable of realizing the random access with enhanced ascending in the N frequency point or multi-carrier TS-SCDMA system.

Description

technical field [0001] The present invention relates to an uplink enhanced random access technology, in particular to an uplink enhanced random access method, device, terminal side equipment and base station side equipment in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system. Background technique [0002] In order to support uplink high-speed data services, the Third Generation Partnership Project (3GPP) introduced the High-Speed ​​Uplink Packet Access (HSUPA) technology in the R7 protocol, and applied the uplink enhancement technology of HSUPA to the TD-SCDMA system, through Adaptive code modulation and mixed request retransmission can effectively improve the good support for uplink data services, thereby improving the uplink throughput of the TD-SCDMA system. Among them, in 3GPP, the TD-SCDMA system is a single-carrier TD-SCDMA system. Then, the uplink enhanced technology is applied in the TD-SCDMA system, and the uplink enhanced random access me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/36H04J13/02
CPCH04W74/002H04W74/0833
Inventor 王可周海军胡金玲
Owner CHINA ACAD OF TELECOMM TECH
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