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US 10,542,515 B2Granted
Location tracking in wireless networks
AssigneeHuawei Technologies Co., Ltd.
InventorsXu Li, Hang Zhang
Life of this patent
Estimating the term…
Abstract
A method for tracking a location of a User Equipment (UE) connected to a network is provided. When the UE is in an IDLE state, and a mobility management entity of the network receives a notification message that downlink data is available for the UE, the mobility management entity may transmit paging instructions to access points in a paging area. The paging area may be defined as one or more access points within one or more tracking areas. The tracking areas may be defined as a one or more access points from which the UE can access the network. The paging areas may further be defined by a mobility pattern of the UE that tracks location and mobility behaviour of the UE.
Claims20
A method comprising:
- periodically updating, by a mobility management function, a respective mobility pattern of a User Equipment (UE), the mobility pattern based on a first mobility pattern generation algorithm selected from among a set of at least two different mobility pattern generation algorithms and including one or more of an indication of a location of the UE as a function of time and an indication of a degree of mobility of the UE as a function of time,
- wherein updating the respective mobility pattern of the UE comprises:
- receiving a mobility pattern based on the first mobility pattern generation algorithm;
- determining, by the mobility management function, based on the received mobility pattern of the first mobility pattern generation algorithm, the UE to be in one of a plurality of mobility states;
- selecting, by the mobility management function, based on the determined mobility state of the UE, a second mobility pattern generation algorithm from among the set of at least two different mobility pattern generation algorithms;
- sending, by the mobility management function, an instruction to the UE to configure location tracking and reporting of the UE, in accordance with the second mobility pattern generation algorithm;
- subsequently receiving, from the UE, location reports including location tracking information of the UE in accordance with the second mobility pattern generation algorithm;
- and
- updating the respective mobility pattern of the UE using the received location tracking information of the UE;
- the method further comprising:
- receiving, by the mobility management function, a notification message associated with downlink data destined for the UE;
- and
- transmitting, by the mobility management function, a paging request only to Access Points (APs) of a predetermined paging area (PA) associated with the UE, the Access Points of the predetermined paging area being selected in accordance with the updated mobility pattern of the UE.
10 more elements
A mobility management function comprising:
- at least one processor;
- a non-transitory computer readable storage medium including software instructions configured to control the at least one processor to perform steps of:
- periodically updating a respective mobility pattern of a User Equipment (UE), the mobility pattern based on a first mobility pattern generation algorithm selected from among a set of at least two different mobility pattern generation algorithms and
- including one or both of an indication of a location of the UE as a function of time and an indication of a degree of mobility of the UE as a function of time,
- wherein updating the respective mobility pattern of the UE comprises:
- receiving a mobility pattern based on the first mobility pattern generation algorithm;
- determining, based on the received mobility pattern of the first mobility pattern generation algorithm, the UE to be in one of a plurality of mobility states;
- selecting, by the mobility management function, based on the determined mobility state of the UE, a second mobility pattern generation algorithm from among the set of at least two different mobility pattern generation algorithms;
- sending, by the mobility management function, an instruction to the UE to configure location tracking and reporting of the UE, in accordance with the second mobility pattern generation algorithm;
- subsequently receiving, from the UE, location reports including location tracking information of the UE in accordance with the second mobility pattern generation algorithm;
- and
- updating the respective mobility pattern of the UE using the received location tracking information of the UE;
- and
- wherein the non-transitory computer readable storage medium is configured to control the at least one processor to perform the further steps of:
- receiving a notification message associated with downlink data destined for the UE;
- and
- transmitting a paging request only to Access Points (APs) of a predetermined paging area (PA) associated with the UE, the Access Points of the predetermined paging area being selected in accordance with the updated mobility pattern of the UE.
14 more elements
Dependencies are inferred from the claim text.