Samsung Electronics Co., Ltd.

Kang-gyu Lee

Jeong-Hoon Park

Sung-Wook Park

Jae-Hwan Chang

Jin-Young Oh

Yun-Sang Park

Yun-Sung Kim

Jun-kyoung Lee

Sang-Hoon Chae

Jaehyuk Jang

Jung-Je Son

Yeong-Moon Son

Geun-Hwi Lim

Jin-A Kim

Jong-Hyun Won

Do-Hyon Yim

Sa-Jin Kim

Jin-Hyun Youn

Jong-han Lim

In-hyoung Kim

Min-hee Cho

Nam-Gi Kim

Young-Hak Kim

Young-sam Park

Tae-Ik Song

Eun-Jung An

Chang-hyun Yun

Sang-Jun Na

A method of managing access to a plurality of Packet Switched (PS) networks of a wireless communication apparatus including a plurality of Subscriber Identity Modules (SIMs) includes obtaining first information indicating data service-related preferences for the plurality of SIMs, selecting at least one SIM necessary for accessing each of the plurality of PS networks from among the plurality of SIMs, based on the first information and second information indicating a wireless network capable of being provided by an operator corresponding to each of the plurality of SIMs, and accessing each of the plurality of PS networks by using the selected at least one SIM.

Wireless communication apparatus for managing access to plurality of wireless networks and management method thereof

Disclosed are methods and devices for multi-Subscriber Identify Module (SIM) wireless communication. In an embodiment, a method includes establishing a window for at least receiving paging in an idle state of a first wireless communication associated with a first SIM. A prediction is made, based on the window, of a collision or non-collision between the paging and a second wireless communication associated with a second SIM. It is then determined, in response to a collision prediction, whether a simultaneous reception of the paging and the second wireless communication is possible through use of different respective carriers, if so, respective radio frequency (RF) paths are allocated to the paging and the second wireless communication, where the allocated RF paths correspond to the different respective carriers.

Device and method for multi-SIM wireless communication

A method for minimizing power consumption of a terminal during a power saving mode operation in a wireless communication system includes acquiring synchronization using a frequency used in a first paging listen interval or a frequency selected in a first paging listen interval; measuring a signal quality based on the acquired synchronization; and according to the measured signal quality, determining a length of a wake-up interval for a second paging listen interval. Thus, the terminal operating in the idle mode can minimize the power consumption of the terminal through the efficient control of the synchronization acquisition overhead interval and the frequency reselection algorithm carried out based on and the channel change.

Method and apparatus for minimizing power consumption during idle mode in wireless communication system

A method and an apparatus for paging a terminated call in a new Mobility Management Entity (MME) of a mobile communication system are provided. The method includes receiving a Tracking Area Update (TAU) REQUEST message from a target terminal which will receive a voice call when the target terminal moves from a currently accessed cell to a cell included in another Tracking Area Identity (TAI) list and the target terminal accesses a packet network, sending an inquiry to an old MME which manages a TAI about whether a terminated call paging for the target terminal is being performed, generating a TAU ACCEPT message including a voice call paging indicator when an answer corresponds to performance of the terminated call paging for the target terminal, and transmitting the TAU ACCEPT message to the target terminal.

Method and apparatus for paging terminated call in mobile communication system

A system is provided for transmitting/receiving downlink resource allocation information in a communication system. In the system, a base station generates first information including downlink resource allocation information necessary for supporting a first mode supported by the base station, generates second information including length information of the first information, and transmits the first information and the second information. A mobile station notifies the base station of a second mode supported by the mobile station, receives, after the notification, the first information and the second information from the base station, and skips without decoding as much downlink resource allocation information as a length corresponding to the length information without decoding, if the first mode is different from the second mode.

System and method for transmitting/receiving resource allocation information in a communication system

An apparatus and method for processing handover in a wireless communication system are provided. The method includes selecting a cell for handover when a HandOver (HO) drop occurs, identifying if information for communicating with a serving BS is stored, transmitting a message ranging request signal to the serving BS, identifying provision or non-provision of a service from the serving BS comprised in a response signal to the message ranging request signal, and transmitting/receiving a signal with the serving BS.

Apparatus and method for processing handover in a wireless communication system

An apparatus and method for a Mobile Station (MS) in an idle mode for performing a location update in a broadband wireless access communication system is provided. The method includes transmitting a ranging request message requesting location update to a Base Station (BS) when a location update condition is met in idle mode, receiving a ranging response message including information for location update response from the BS, and wherein the information indicates whether a downlink traffic is pending for the MS.

Apparatus and method for updating location of idle-mode mobile station in a broadband wireless access communication system

A method for controlling a sleep mode operation by a Mobile Station (MS) in a communication system. The MS includes transitioning to an awake state in a listening interval of the sleep mode; performing any one of a first operation, a second operation and a third operation in the awake state; and after any one operation is performed, transitioning to a sleep state upon detecting that there is no data to transmit to the BS and there is no data to be received from the BS. The first operation is a process of receiving data from the BS, the second operation is a process of transmitting data to the BS, and the third operation is a process of receiving data from the BS and receiving data from the BS.

Method for operating control sleep mode in a communication system

An apparatus and method for estimating UpLink (UL) transmission timing in a Mobile Station (MS) of a wireless communication system are provided. The method includes tracking DL timing by using a DL preamble signal received for each frame; estimating a time offset between a previous frame and a current frame by using the DL timing tracked for each frame; and estimating the UL transmission timing by using the estimated time offset.

Apparatus and method for estimating uplink transmission timing in wireless communication system

An apparatus and method for random access in a wireless communication system are provided. In the method, a random access response message is received. The random access response message is analyzed to determine a status of a random access process. A count variable value is updated according to the status. And the count variable value is compared with at least one reference value to determine a random access period. By adaptively changing the period of periodic ranging in a wireless communication system, the probability of success is increased while the waste of resources is decreased.

Apparatus and method for random access in wireless communication system

A method for controlling a sleep-mode operation in a communication system is provided, in which a Mobile Station (MS) transitions to an awake state in a listening interval of the sleep mode, performs one of a first operation, a second operation, and a third operation in the awake state, and transitions to a sleep state if the MS determines that there is no data to transmit to a BS and no data to receive from the Base Station (BS) after the one operation is performed. The first operation is for receiving data from the BS, the second operation is for transmitting data to the BS, and the third operation is receiving data from the BS and transmitting data to the BS.

Method for controlling sleep-mode operation in a communication system

Disclosed is a system and method for transmitting and receiving hybrid automatic repeat request (HARQ) buffer capability information in a broadband wireless access communication system. According to the system and method, a mobile station detects its own HARQ buffer capacity, and transmits a message including information about the detected HARQ buffer capability to a base station. The base station receives the message and determines the amount of a transmission signal to be allocated to the mobile station based on the HARQ buffer capability, so that it is possible to operate a HARQ scheme in accordance with the HARQ buffer capability of the mobile station.

System and method for transmitting/receiving hybrid automatic repeat request buffer capability information in broadband wireless access communication system

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Yongin-si, South Korea

Kang-gyu Lee