Method and system for scheduling HSDPA resource

Abstract

The present invention discloses a method of scheduling HSDPA resources, and a system thereof. The method comprises the following steps: a Node B determines the HSDPA resources allocated for a UE, and identifies the effective continuous period of scheduling to be adopted as different lengths according to various conditions of the wireless link; the Node B informs the UE of the allocated HSDPA resources and the effective continuous period of scheduling through the HS-SCCH; when the HSDPA resources come into effect, the Node B transmits MAC-hs PDU; the UE reads N MAC-hs PDUs transmission blocks which are transmitted by N TTIs. According to the information on the HS-SCCH, the results received by the scheduling data are returned to the Node B through the HS-SICH; and N is the number of the TTIs in the effective continuous period of scheduling. The system comprises the and the UE; wherein, the Node B comprises an allocation determining unit, an allocation transmitting unit and a data transmitting unit; the UE comprises a data reading unit and a confirmation returning unit. In the method, the Node B can regulate the effective continuous period of scheduling according to the current state of the wireless link, so as to efficiently improve the utilization efficiency of the HS-SCCH resources.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for scheduling High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access) resources. Background technique [0002] In the third generation mobile communication (The Third Generation, "3G" for short) standard, in order to meet the rapidly growing demand for high-speed mobile data services, the HSDPA technology is proposed. The main features of this technology are the adoption of Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding), Hybrid Automatic Repeat Request mechanism (HARQ, Hybrid Automatic-Repeat-Request), and resource sharing mechanism, in order to obtain greater capacity and reduce latency and achieve higher peak rates. [0003] The high-speed data service bearer of HSDPA is mainly transmitted through a high-speed downlink shared channel (HS-DSCH, High Speed ​​Downlink Shared Channel). HS-DSCH is a dedicate...

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Problems solved by technology

[0005] 1) When the wireless link is relatively stable, such as in suburban or rural areas, because fast fading is not obvious, Node B can always transmit downlink data for user equipment with a stable resource configuration. Share the control channel HS-SCCH to transmit the same configuration information, which leads to a decrease in the utilization efficiency of HS-SCCH, so it is not necessary, and it will also increase the power consumption of UE due to continuous monitoring of HS-SCCH

[0006] 2) When the wireless link changes drastically, since the new transmission format or modulation mode is always obtained according to the link status of the last transmission, and due to the drastic change of the link, the new transmission mode may not be well suited In the current link, there may even be a situation similar to that of peaks and troughs that cancel each other out. Therefore, in some cases, the wireless link scheduling algorithm, the faster the scheduling, the better is not absolute.

[0007] 3) Since the UE must be notified through the HS-SCCH every time data is transmitted, when scheduling multiple user equipments, multiple sets of HS-SCCHs must be configured, in some cases, as mentioned in 1) situation, which results in a waste of resources

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