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US 8,543,140 B2Granted
Method and apparatus for determining paging time
AssigneeHuawei Technologies Co., Ltd.
InventorYinghui Yu
Life of this patent
Estimating the term…
Abstract
The technical solution under the present invention determines paging time by determining the position of the radio sub-frame that includes a paging identifier, with a view to ensuring energy efficiency of a User Equipment (UE). Network-side and user-side paging apparatus and methods are disclosed to perform the paging time determination steps of the invention.
Claims20
A method for facilitating a network device's capability to page a user equipment (UE), the method comprising:
- determining a System Frame Number (SFN) of a radio frame, wherein the radio frame is designated for carrying a Paging Radio Network Temporary Identifier (P-RNTI) for a paging of the UE by the network device, the radio frame comprising a plurality of radio sub-frames, and the P-RNTI being configured to be transmitted by the network device to the UE in a Physical Downlink Control Channel (PDCCH) within one of the plurality of the radio sub-frames in the radio frame;
- and
- determining a position of the radio sub-frame configured to be used in the transmission of the P-RNTI, wherein the determining the position includes consideration of parameters including an International Mobile Subscriber Identifier (IMSI) of the UE being paged, a Discontinuous Reception (DRX) period length of the UE being paged, and a quantity of radio sub-frames suitable for the paging in the radio frame.
An apparatus, comprising:
- a first determining unit, configured to determine a System Frame Number (SFN) of a radio frame, wherein the radio frame is designated for carrying a Paging Radio Network Temporary Identifier (P-RNTI) for a paging of a user equipment (UE) by a network device, the radio frame comprising a plurality of radio sub-frames, the P-RNTI being configured to be transmitted by the network device to the UE in a Physical Downlink Control Channel (PDCCH) within one of the plurality of the radio sub-frames in the radio frame;
- and
- a second determining unit, configured to determine a position of the radio sub-frame configured to be used in the transmission of the P-RNTI, wherein the position is determined by consideration of parameters including an International Mobile Subscriber Identifier (IMSI) of the UE being paged, a Discontinuous Reception (DRX) period length of the UE being paged, and a quantity of radio sub-frames suitable for the paging in the radio frame.
A wireless communications apparatus, comprising:
- a memory for storing instructions;
- and
- a processor coupled to the memory configured to execute the instructions to allow the apparatus to:
- determine a System Frame Number (SFN) of a radio frame, wherein the radio frame is designated for carrying a Paging Radio Network Temporary Identifier (P-RNTI) for a paging of a UE by a network device, the radio frame comprising a plurality of radio sub-frames, the P-RNTI being configured to be transmitted by the network device to the UE in a Physical Downlink Control Channel (PDCCH) within one of the plurality of the radio sub-frames in the radio frame;
- and
- determining a position of the radio sub-frame configured to be used in the transmission of the P-RNTI, wherein the determining the position includes consideration of parameters including an International Mobile Subscriber Identifier (IMSI) of the UE being paged, a Discontinuous Reception (DRX) period length of the UE being paged, and a quantity of radio sub-frames suitable for the paging in the radio frame.
3 more elements
A mobile communications system, comprising:
- a network device in communication with a user equipment (UE), wherein
- the network device is configured to:
- send a Paging Radio Network Temporary Identifier (P-RNTI) to the UE in a Physical Downlink Control Channel (PDCCH) within a radio sub-frame of a radio frame, wherein a paging message is associated with the P-RNTI, the paging message being configured to be transmitted in a Physical Downlink Shared Channel (PDSCH) within the radio sub-frame;
- and
- the UE is configured to:
- determine a System Frame Number (SFN) of the radio frame;
- determine a position of the radio sub-frame within the radio frame by consideration of parameters including an International Mobile Subscriber Identifier (IMSI) of the UE, a Discontinuous Reception (DRX) period length of the UE, and a quantity of radio sub-frames suitable for paging in the radio frame;
- decode the PDCCH within the radio sub-frame;
- obtain the P-RNTI in the PDCCH;
- and
- obtain the paging message associated with the P-RNTI.
8 more elements
Dependencies are inferred from the claim text.