Data packet processing method for semi-persistent scheduling and base station
A technology of semi-persistent scheduling and processing method, which is applied in the field of semi-persistent scheduling data packet processing method and base station, and can solve the problem of semi-persistent scheduling queue or logical channel without buffered data that can be sent, service data arriving at base station and data volume matching, etc. question
Active Publication Date: 2011-05-25
DATANG MOBILE COMM EQUIP CO LTD
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[0007] Since the HS-PDSCH resources of the semi-persistent scheduling are pre-allocated periodic resources, it is difficult for the business data carried on the downlink semi-persistent resources to arrive at the base station (NodeB) and the data volume is difficult to completely match the pre-allocated air interface resources. Therefore, it may appear that there is a TTI with semi-persistent scheduling resources, and the base station (NodeB) semi-persistent scheduling queue or logical channel has no cached data to send
[0008] The disadvantage of the existing technology is that there is no solution for how to deal with it on the base station (NodeB) side when there is no buffered data in the downlink semi-persistent scheduling queue or logical channel, but there are HS-PDSCH resources in the current TTI
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[0042] During the process of the invention, the inventors noticed:
[0043] In the TD-SCDMA system, a queue that is dynamically scheduled by ordinary HSDPA is used. If there is no TTI of the queue data in the NodeB cache, the queue will not be scheduled and HS-PDSCH resources will be allocated to the queue. The queue sends HS-SCCH and MAC-hs / MAC-ehs PDUs. Since there is no HS-SCCH, the terminal will not receive HS-PDSCH data.
[0044] In addition, there are the following situations:
[0045] 1. Reordering.
[0046] figure 1 is a schematic diagram of the MAC-hs entity structure on the terminal side, figure 2It is a schematic diagram of the MAC-ehs entity structure on the terminal side. For reordering, in the TD-SCDMA system, the protocol stipulates:
[0047] (1) If figure 1 As shown, when the terminal does not support L2 enhancement, the reordering queue distribution (Reordering Queue distribution) function module in the MAC-hs entity on the terminal side receives the MAC...
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The invention discloses a data packet processing method for semi-persistent scheduling and a base station. The method comprises the following steps of: determining that cached data of a semi-persistent scheduling queue are empty, and storing semi-persistent high speed downlink shared physical channel resource at the current transmission time interval; constructing a media access control protocol data unit in a format that a terminal does not submit a reordering entity, and / or keeping the transmission serial number counting maintained by the semi-persistent scheduling queue not updated; and sending the processed media access control protocol data unit to the terminal on the semi-persistent high speed downlink shared physical channel resource. For the base station of a time division synchronous-code division multiple access system for supporting high speed packet access plus, under the conditions that the downlink semi-persistent scheduling queue or a logical channel has no cached data and the semi-persistent high speed downlink shared physical channel resource exists at the current transmission time interval, the invention provides a processing scheme of the base station under the conditions.
Description
technical field [0001] The present invention relates to wireless communication technology, in particular to a semi-persistent scheduling data packet processing method and base station. Background technique [0002] In order to optimize the efficiency of using shared channels to transmit services with high latency requirements and low data rates (such as VoIP (Voice over IP, voice over IP)), especially to optimize the control channel overhead in transmission, when supporting HSPA+ (High In the TD-SCDMA (Time Division Synchronized Code Division Multiple Access, Time Division Synchronized Code Division Multiple Access) system of Speed Packet Access Plus, high-speed packet access enhancement), a semi-persistent resource allocation method is introduced. That is, a base station (NodeB) sends a control channel HS-SCCH (High-Speed shared control channel, high-speed shared control channel) once to allocate periodic physical resources to the terminal. In addition, the base statio...
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IPC IPC(8): H04W72/12H04L1/18
Inventor 束超沈雅娜邢艳萍王姝杰孙军帅李楠楠
Owner DATANG MOBILE COMM EQUIP CO LTD