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Method for reactivation of semi-static scheduling, and base station thereof
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A semi-static scheduling and reactivation technology, applied in the field of wireless communication, can solve problems such as eNB failure and SPS reactivation, and achieve a reasonable allocation of air interface resources
Active Publication Date: 2011-04-13
ZTE CORP
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[0011] The technical problem to be solved by the present invention is to provide a semi-static scheduling reactivation method and a base station to solve the problem that the eNB cannot perform uplink SPS reactivation when the SPS service and the dynamic scheduling service coexist and are assigned to UEs in the same LCG
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Embodiment 1
[0055] Embodiment 1: When the uplink SPS data becomes larger, the SPS is reactivated.
[0056] For a UE that coexists with SPS services and dynamic scheduling services and is assigned to the same LCG, when the uplink SPS data becomes larger, the SPS reactivation process is as follows: image 3 shown, including the following steps:
[0057] Step 1.1. The eNB activates uplink semi-persistent scheduling, periodically pre-allocates resources for the UE, and saves the pre-allocated transport block size as a reference value R;
[0058] Step 1.2, UE sends uplink SPS data using pre-allocated resources in the semi-persistent scheduling period;
[0059] Step 1.3, eNB receives the complete uplink SPS data packet, records the length L of RLC SDU or PDCP PDU, and L>R, deviation Δ=L-R;
[0060] Step 1.4. During the comparison period, if the deviation Δ of all received data packets is greater than or equal to the preset threshold value, the eNB will reactivate the uplink semi-persistent sc...
Embodiment 2
[0062] Example 2: When the uplink SPS data becomes smaller, the SPS is reactivated
[0063] For a UE that coexists with SPS services and dynamic scheduling services and is allocated to the same LCG, the uplink SPS data becomes smaller, and the SPS reactivation process is as follows: Figure 4 shown, including the following steps:
[0064] Step 1.1. The eNB activates uplink semi-persistent scheduling, periodically pre-allocates resources for the UE, and saves the pre-allocated transport block size as a reference value R;
[0065] Step 1.2, UE sends uplink SPS data using pre-allocated resources in the semi-persistent scheduling period;
[0066] Step 1.3, eNB receives the complete uplink SPS data packet, records the length L of RLC SDU or PDCP PDU, and L<R, deviation Δ=R-L;
[0067] Step 1.4. During the comparison period, if the deviation Δ of all received data packets is greater than or equal to the preset threshold value, the eNB will reactivate the uplink semi-persistent sch...
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Abstract
The present invention relates to a method and a base station for the reactivation of semi-static scheduling, wherein the base station comprises a storage module, a resource assignment module, a data packet reception module and a comparison module, besides, the method comprises the following steps: the base station of activated semi-static scheduling (eNB) preassigns resources to a terminal (UE), then stores the size information of the preassigned transmission block; the eNB receives complete semi-static scheduling data packet uploaded by the UE, then makes a comparison between the size of data packet and the size of preassigned transmission block stored in the eNB, and reactivates the semi-static scheduling in the case that the both are not of same size. The present invention solves the problem that the eNB can not reactivate the uplink SPS when the SPS data changes in a period of time, in the case that SPS business as well as dynamic scheduling business coexist and assigned to a UE in the same LCG. When in use, the invention makes the assignment of air interface resources more reasonable.
Description
technical field [0001] The invention relates to the field of wireless communication, in particular to a semi-static scheduling reactivation method and a base station. Background technique [0002] Such as figure 1 As shown, an LTE (LTE, long term evolution) system is mainly composed of a terminal (User Equipment, UE), a base station (eNB) and a core network. The eNB is responsible for access layer affairs, such as radio resource management, etc., and the uplink and downlink radio resources are scheduled by the eNB in a shared channel manner. The core network is responsible for non-access layer affairs, such as billing and location management. Each UE can usually only connect to one eNB in the network in the uplink direction. [0003] In the existing LTE system, for uplink and downlink shared channels, eNB scheduling is used to control uplink and downlink transmissions of different UEs, so as to improve channel utilization. The eNB has two scheduling methods: semi-per...
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