Method for selecting uplink transmission channel

Abstract

The invention discloses a method for selecting an uplink transmission channel. The method comprises the following steps: enhanced type UE in a CELL-FACH state is set in advance, and E-DCH and RACH are supported simultaneously; when channel configuration is needed to be carried out on the enhanced type UE, a network side selects and configures an uplink transmission channel for the enhanced type UE according to the guarantee rate and the priority level of the service of the enhanced type UE; and when the service is carried out, the enhanced type UE in the CELL-FACH state periodically selects the uplink transmission channel according to the arrival rate and the buffer memory quantity of the service which is currently carried out. By applying the invention, RACH and E-DCH resources can be reasonably configured.

Description

technical field [0001] The invention relates to high-speed packet access (HSPA) technology, in particular to a method for selecting an uplink transmission channel. Background technique [0002] In the HSPA system, user equipment (UE) has two basic operation modes: idle mode and connected mode. After the UE is powered on, it enters the idle mode; when the UE in the idle mode receives paging from the system or receives a request from the upper layer to establish a radio resource control (RRC) connection, it completes the establishment of the RRC connection and transfers from the idle mode to the connected mode; Transition from connected mode to idle mode when the RRC connection is released. [0003] In connection mode, UE has four states: CELL_FACH state, CELL_DCH state, CELL_PCH state and URA_PCH state. The different states reflect the connection level of the UE and which transport channels the UE can use. Time Division Synchronous Code Division Multiple Access (TD-SCDMA) ...

AI Technical Summary

Problems solved by technology

[0023] 1) Services with lower QoS requirements, lower service rates, and less data volume are more suitable for transmission on RACH, but according to the above regulations, this service can only be transmitted on E-DCH;

[0024] 2) When the UE in the CELL_FACH state has a low scheduling priority and cannot be scheduled for a long time, and the RACH channel is idle, the system cannot adjust the traffic between E-DCH and RACH;

[0025] 3) There may be both traditional UEs and enhanced UEs in the network. In order to be compatible with traditional UEs, the system should configure RACH channels and E-DCH channels at the same time. However, because enhanced UEs in the CELL_FACH state can only use E-DCH for transmission , failed to achieve effective use of RACH

[0026] It can be seen from the above that in a network where RACH and E-DCH coexist, because the existing technology stipulates that the enhanced UE can only use E-DCH for transmission in the CELL_FACH state, regardless of service priority and channel load conditions. RACH and E-DCH resources cannot be allocated reasonably, and there is a bottleneck of system resource utilization

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