Avoiding paging collision by UE comprising plurality of sims in wireless network
The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments herein provide a method for avoiding paging collision by a UE comprising SIMs in a wireless network.
1 . A method performed by a user equipment (UE) comprising one or more subscriber identity modules (SIMs) in a wireless network, the method comprising:
detecting a paging collision between a first SIM of the one or more SIMs and a second SIM of the one or more SIMs, wherein the UE is in a radio resource control (RRC) idle state or an RRC inactive state with the first SIM and the UE is in an RRC idle state or an RRC inactive state with the second SIM;
selecting one of a first network entity associated with the first SIM or a second network entity associated with the second SIM;
transmitting, to the one of the first network entity or the second network entity, based on the selection, a registration request message;
receiving, from the one of the first network entity or the second network entity, a registration accept message including a reassigned globally unique temporary identifier (GUTI); and
receiving, from the one of the first network entity or the second network entity, a paging message in a paging occasion (PO) determined based on the reassigned GUTI.
2 . The method of claim 1 , wherein detecting the paging collision between the first SIM and the second SIM comprises:
determining a PO for the first SIM;
determining a PO for the second SIM;
determining whether the PO for the first SIM partially overlaps or fully overlaps with the PO for the second SIM; and
detecting the paging collision between the first SIM and the second SIM in response to determining the PO for the first SIM partially overlaps or fully overlaps with the PO for the second SIM.
3 . The method of claim 2 , wherein determining overlapping between the PO for the first SIM and the PO for the second SIM is performed based on one or more parameters, and
wherein the one or more parameters comprise at least one of a UE identity, a PO, a paging frame (PF), a location of a physical downlink shared channel (PDSCH) carrying paging information on the first SIM and the second SIM, a cross-slot configuration, a discontinuous reception (DRX) cycle length, a number of paging frames in a DRX cycle, a number of POs in a PF, a radio access technology (RAT), or a DRX offset parameter of the one or more SIMs.
4 . The method of claim 1 , wherein the one of the first network entity or the second network entity is selected based on at least one of a discontinuous reception (DRX) cycle length for the first SIM and the second SIM, or a radio access technology (RAT) utilized on the first SIM and the second SIM.
5 . The method of claim 1 , wherein the registration request message is transmitted to the one of the first network entity or the second network entity via one of a non-access stratum (NAS) message or an access stratum (AS) message.
6 . A method performed by a network entity, the method comprising:
receiving, from a user equipment (UE) including one or more subscriber identity modules (SIMs), a registration request message to avoid a paging collision between a first SIM and a second SIM;
reassigning a globally unique temporary identifier (GUTI) based on the registration request message;
transmitting, to the UE, a registration accept message including the reassigned GUTI; and
transmitting, to the UE, a paging message in a paging occasion (PO) determined based on the reassigned GUTI.
7 . The method of claim 6 , wherein the registration request message is received from the UE via one of a non-access stratum (NAS) message or an access stratum (AS) message.
8 . A user equipment (UE) in a wireless network, the UE comprising:
a memory including one or more subscriber identity modules (SIMs);
a transceiver; and
a controller configured to:
detect a paging collision between a first SIM of the one or more SIMs and a second SIM of the one or more SIMs, wherein the UE is in a radio resource control (RRC) idle state or an RRC inactive state with the first SIM and the UE is in an RRC idle state or an RRC inactive state with the second SIM,
select one of a first network entity associated with the first SIM or a second network entity associated with the second SIM,
transmit, via the transceiver, to the one of the first network entity or the second network entity, based on the selection, a registration request message,
receive, from the one of the first network entity or the second network entity, a registration accept message including a reassigned globally unique temporary identifier (GUTI), and
receive, from the one of the first network entity or the second network entity, a paging message in a paging occasion (PO) determined based on the reassigned GUTI.
9 . The UE of claim 8 , wherein the controller is further configured to:
determine a PO for the first SIM,
determine a PO for the second SIM,
determine whether the PO for the first SIM partially overlaps or fully overlaps with the PO for the second SIM, and
detect the paging collision between the first SIM and the second SIM in response to determining the PO for the first SIM partially overlaps or fully overlaps with the PO for the second SIM.
10 . The UE of claim 9 , wherein determining overlapping between the PO for the first SIM and the PO for the second SIM is performed based on one or more parameters, and
wherein the one or more parameters comprise at least one of a UE identity, a PO, a paging frame (PF), a location of a physical downlink shared channel (PDSCH) carrying paging information on the first SIM and the second SIM, a cross-slot configuration, a discontinuous reception (DRX) cycle length, a number of paging frames in a DRX cycle, a number of POs in a PF, a radio access technology (RAT), or a DRX offset parameter of the one or more SIMs.
11 . The UE of claim 8 , wherein the one of the first network entity or the second network entity is selected based on at least one of a discontinuous reception (DRX) cycle length for the first SIM and the second SIM, or a radio access technology (RAT) utilized on the first SIM and the second SIM.
12 . The UE of claim 8 , wherein the registration request message is transmitted to the one of the first network entity or the second network entity via one of a non-access stratum (NAS) message or an access stratum (AS) message.
13 . A network entity in a wireless network, the network entity comprising:
a transceiver; and
a controller configured to:
receive, via the transceiver, from a user equipment (UE) including one or more subscriber identity modules (SIMs), a registration request message to avoid a paging collision between a first SIM and a second SIM,
reassign a globally unique temporary identifier (GUTI) based on the registration request message, and
transmit, via the transceiver, to the UE, a registration accept message including the reassigned GUTI, and
transmit, to the UE, a paging message in a paging occasion (PO) determined based on the reassigned GUTI.
14 . The network entity of claim 13 , wherein the registration request message is received from the UE via one of a non-access stratum (NAS) message or an access stratum (AS) message.