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US 8,948,070 B2Granted
Scheduling method and system for high speed uplink packet access
AssigneeZte Corporation
InventorsZijun Liang, Zhuo Yang, Chen Wang, Changchun Tang
Life of this patent
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Abstract
A scheduling method and system for high speed uplink packet access which comprises the following two-level scheduling: a first level scheduling for distributing the target rise over thermal (RoT) of each user equipment (UE); and a second level scheduling for tracking the assigned to target RoT via transmitting a relative authority instruction, according to the current authority and channel quality of the UE.
Claims12
A scheduling method for high speed uplink packet access, comprising following two levels of scheduling:
- a first level scheduling for assigning a target Rise over Thermal (ROT) to each User Equipment (UE), wherein said first level scheduling comprises a non-serving Relative Grant (RG) DOWN transmitting determining step and a serving UE target RoT determining step, wherein the non-serving RG DOWN transmitting determining step comprises, when a cell is overloaded and the overloading satisfies a condition for transmitting RG DOWN, determining a non-serving UE that needs to be transmitted with RG DOWN and transmitting determined information from the step of determining the non-serving UE to a second level scheduler, wherein the serving UE target RoT determining step comprises calculating priorities of all serving UEs and sorting them in sequence, assigning an uplink load of the cell available for an enhanced dedicated channel among the serving UEs, determining a target RoT resource assigned to each of the serving UEs, and transmitting the determined information from the step of determining the target RoT resource to the second level scheduler;
- and
- a second level scheduling for tracking the assigned target RoT through transmitting a relative grant instruction based on current grant and channel quality of said each UE, wherein said second level scheduling comprises a processing step for each of non-serving UEs and a processing step for the each of the serving UEs, wherein said processing step for each of non-serving UEs comprises transmitting RG DOWN when the non-serving UE is determined to need to be transmitted with RG DOWN, wherein said processing step for the each of the serving UEs comprises evaluating the channel quality after a scheduling grant becomes effective according to current information and historical information of the each of the serving UEs, determining particular grant for the each of the serving UEs according to the target RoT assigned to the each of the serving UEs, determining a scheduling grant instruction to be transmitted, and then transmitting the scheduling grant instruction to the each of the serving UEs, wherein the second level scheduling is performed by the second level scheduler.
A scheduling system for high speed uplink packet access, comprising:
- a first level scheduler;
- and
- a second level scheduler;
- wherein the first level scheduler comprises a non-serving Relative Grant (RG) DOWN transmitting determining module and a serving User Equipment (UE) target Rise over Thermal (ROT) determining module, wherein said non-serving RG DOWN transmitting determining module is used for determining a UE that needs to be transmitted with non-serving RG DOWN when a cell is overloaded and the overloading satisfies a condition for transmitting RG DOWN, and transmitting the determined information from the step of determining the UE to the second level scheduler, and wherein said serving UE target RoT determining module is used for calculating priorities of all serving UEs and sorting them in sequence, assigning an uplink load of the cell available for an enhanced dedicated channel among the serving UEs, determining a target RoT resource assigned to each serving UE, and transmitting the determined information from the step of determining the target RoT resource to the second level scheduler;
- and
- wherein the second level scheduler comprises a non-serving UE processing module and a serving UE processing module, wherein said non-serving UE processing module is used for transmitting RG DOWN when it needs to be transmitted with RG DOWN, and said serving UE processing module is used for evaluating channel quality after a scheduling grant becomes effective according to current information and history information of each serving UE, determining a particular grant for each serving UE according to the target RoT resource assigned to each serving UE, determining a scheduling grant instruction to be transmitted, and then transmitting the scheduling grant instruction to said serving UE.
3 more elements
Dependencies are inferred from the claim text.