WO2012161551A2 - 다중 무선접속기술을 지원하는 무선 접속 시스템에서 페이징을 효율적으로 하기 위한 방법 및 장치 - Google Patents
다중 무선접속기술을 지원하는 무선 접속 시스템에서 페이징을 효율적으로 하기 위한 방법 및 장치 Download PDFInfo
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- WO2012161551A2 WO2012161551A2 PCT/KR2012/004165 KR2012004165W WO2012161551A2 WO 2012161551 A2 WO2012161551 A2 WO 2012161551A2 KR 2012004165 W KR2012004165 W KR 2012004165W WO 2012161551 A2 WO2012161551 A2 WO 2012161551A2
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- WIPO (PCT)
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- base station
- rat
- terminal
- message
- paging message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/12—Inter-network notification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Definitions
- the present specification relates to a radio access system supporting multi-radio access technology (Multi RAT), and more particularly, to a method and apparatus for efficiently paging.
- Multi RAT multi-radio access technology
- the terminal in the case of a terminal supporting the conventional multiplex radio access technology, the terminal is connected to any one radio access technology based on switching to transmit and receive data through one network. Therefore, when a terminal having a multi-RAT capability transmits and receives data through a specific network and transmits and receives data to and from another network, the data transmission and reception for any one network is stopped.
- the conventional technology can communicate with a terminal having a capability of supporting two or more heterogeneous networks using different networks, there is a limit in efficiency because it operates based on simple switching.
- different networks operate independently of each other, inefficient operation is performed in terms of overall flow management of the terminal.
- a method for transmitting and receiving data simultaneously through two or more heterogeneous networks that is, through each network, has been defined.
- a scheme for improving and bypassing network / user performance, network capability and user service quality is provided.
- a terminal having multi-RAT capability communicates with two access points, one of which is an access point of IEEE 802.11, and the other of which is an access point of IEEE 802.16.
- a terminal having multi-RAT capability may communicate with an integrated device having both IEEE 802.16 / 11 interfaces.
- the multi-RAT terminal can transmit and receive data corresponding to a specific service flow with the second system under the control of the first system.
- the multi-RAT terminal can transmit and receive data corresponding to a specific service flow with the second system under the control of the first system.
- Embodiments disclosed herein provide a method for defining a state of a terminal having two or more multiple MAC / PHY layers, in particular, an idle mode, and efficiently receiving a paging message and a terminal employing the same. It is to.
- a method for receiving a paging message of a first base station by a terminal capable of transmitting and receiving data with a second base station supporting wireless access technology may include establishing a connection with the first base station; Receiving a second base station connection command message including a paging message transmission indication from the first base station; Establishing a connection with the second base station in response to the second base station connection command message; And monitoring the paging message of the first base station through the first base station or the second base station based on the paging message transmission indication.
- RAT radio access technologies
- the monitoring may comprise: receiving a paging message indication from the second base station; And receiving a paging message from the first base station.
- the monitoring may include receiving a paging message from the second base station.
- the monitoring may include receiving a network reentry indication from the second base station with the first base station.
- the method may further include performing network reentry with the first base station in response to the network reentry indication.
- the monitoring may include receiving, through the second base station, a paging message or a paging indication message from a paging controller or the first base station.
- the monitoring may include recognizing the received message as a paging message when a message corresponding to an IP address of the paging controller or an IP address of the first base station is received. It further comprises a step.
- the location update of the first base station is not performed while the connection with the second base station is maintained.
- the method may further include: performing data communication with the second base station; And informing the first base station of monitoring a paging message from the first base station when the data communication with the second base station is completed in the idle mode.
- the notifying step characterized in that the step of performing a location update for the first base station.
- the second BS connection command message is AAI-SS-CMD.
- the method may further include: receiving a message related to entering an idle mode from the first base station before the monitoring; And entering the idle mode in response to a message associated with entering the idle mode.
- the method may further include: performing data communication with the second base station before the monitoring; And deregistering with the first base station.
- the first radio access technology is a broadband radio access technology
- the second radio access technology is characterized in that the short-range radio access technology
- the broadband wireless access technology is a wireless access technology that supports 802.16, the short-range wireless access technology is characterized in that the wireless access technology supporting 802.11.
- a first base station supporting a first radio access technology in a radio access system supporting multiple radio access technologies (RATs) for solving the above technical problem.
- a terminal capable of transmitting and receiving data to and from a second base station supporting the second wireless access technology, the wireless communication unit for transmitting and receiving a wireless signal with the outside;
- a control unit connected to the wireless communication unit, wherein the control unit establishes a connection with the first base station and receives the second base station connection command message including a paging message transmission instruction from the first base station. And controlling a communication unit and monitoring a paging message of the first base station through the first base station or the second base station based on the paging message transmission instruction.
- a method of receiving a paging message of a first base station by a terminal capable of transmitting / receiving data with a base station and a second base station supporting a second radio access technology may include an idle mode including an indication of a paging message transmission from the first base station. receiving a message related to entry of mode); Entering the idle mode in response to a message associated with entering the idle mode; And monitoring the paging message of the first base station through the first base station or the second base station based on an indication indicating whether to monitor the paging message.
- the monitoring may comprise: receiving a paging message indication from the second base station; And receiving a paging message from the first base station.
- the monitoring may include receiving a paging message from the second base station.
- the message related to entering the idle mode may be AAI-DREG-RSP.
- a terminal having two or more multiple MAC / PHY layers can efficiently receive a paging message.
- FIG. 1A and 1B are conceptual views illustrating a multi-radio access technology (Multi RAT) network to which an embodiment of the present specification can be applied.
- Multi RAT multi-radio access technology
- FIG. 2 is a flowchart illustrating a method for a multi-RAT terminal to transmit and receive data through a first system and a second system.
- FIG. 3 is a flowchart illustrating a multi-RAT capability negotiation process between a multi-RAT terminal and a first system.
- FIG. 4 is a flowchart illustrating a scanning process of a second system of a multi-RAT terminal.
- FIG. 5 is a flowchart illustrating a process of adding a second system, that is, a process of accessing a second system by a multi-RAT terminal in a second system operation method.
- FIG. 6 is a flowchart illustrating a process of connecting a multi-RAT terminal with a second system.
- FIG. 7 is a flowchart illustrating a process of reconnecting a multi-RAT terminal with a second system.
- FIG. 8 is a flowchart illustrating a process of releasing a connection with a second system by a multi-RAT terminal.
- Multi RAT multi-radio access technology
- FIG. 10 is a diagram illustrating a process of connecting a multi-RAT terminal with a second system according to one embodiment disclosed herein.
- FIG. 11 is a diagram illustrating an idle mode entry process of a terminal initiated by a terminal according to an embodiment of the present disclosure.
- 12A and 12B are diagrams illustrating an idle mode entry process of a terminal initiated by a base station according to one embodiment disclosed herein.
- FIG. 13 is a conceptual diagram illustrating a multi-radio access technology (Multi RAT) network to which another embodiment of the present disclosure can be applied.
- Multi RAT multi-radio access technology
- FIG. 14 is a conceptual diagram illustrating a process of receiving a paging message through a second system by a multi-RAT terminal according to one embodiment of the present specification.
- 15A and 15B are conceptual views illustrating a process of transmitting a paging message through a second system by a multi-RAT terminal according to one embodiment of the present specification.
- FIG. 16 illustrates an internal block diagram of a terminal and a base station in a wireless access system to which embodiments of the present specification can be applied.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
- TDMA may be implemented with wireless technologies such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE).
- OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA), or the like.
- IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e.
- UTRA is part of the Universal Mobile Telecommunications System (UMTS).
- LTE Long Term Evolution
- E-UMTS Evolved UMTS Terrestrial Radio Access
- E-UTRA Evolved-UMTS Terrestrial Radio Access
- OFDMA OFDMA in downlink
- SC Evolved-UMTS Terrestrial Radio Access
- LTE-A Advanced is the evolution of 3GPP LTE.
- a terminal accesses two or more heterogeneous networks (or multiple RATs) in a multi-radio access technology (Multi RAT) network and simultaneously transmits and receives data through each network will be described.
- Multi RAT multi-radio access technology
- FIG. 1A and 1B are conceptual views illustrating a multi-radio access technology (Multi RAT) network to which an embodiment of the present specification can be applied.
- Multi RAT multi-radio access technology
- Multi-radio access technology (hereinafter referred to as 'multi-RAT') network refers to a wireless communication environment in which two or more heterogeneous networks exist, and a terminal can simultaneously perform communication by connecting two or more heterogeneous networks.
- a terminal capable of simultaneously communicating with two or more heterogeneous networks is referred to as a 'multi-RAT terminal' or a 'multi-system terminal'.
- Heterogeneous network refers to a network using a communication method different from that used in a specific network based on the specific network.
- WiMAX networks and Wi-Fi networks using Wi-Fi networks which are examples of mobile communication systems, correspond to heterogeneous networks.
- RAT is a type of technology used for radio access.
- RAT includes GSM / EDGE Radio Access Network (GERAN), UMTS Terrestrial Radio Access Network (UTRAN), Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN), WiMAX, LTE (-A), WiFi, etc. can do. That is, GERAN, UTRAN, E-UTRAN, WiMAX and / or WiFi are mixed in the same region.
- the multi-RAT network 100 may include a first system 110 and a second system 120.
- the first system 110 and the second system 120 may be represented as a first network and a second network, respectively.
- the first system 110 includes a multi-RAT terminal 10, a base station 20, and a second system 120.
- the second system 120 includes a multi-RAT terminal 10 and an AP 30. It may include.
- the first system is a system having a wide range of coverage and may be a mobile communication system.
- the first system may be a system in charge of the transmission of control information.
- the first system may be a WiMAX or LTE (-A) system.
- the first system refers to a system that always has a status with the multi-RAT terminal. That is, the first system refers to a system that maintains an activation state, a sleep mode state, or an idle mode state with the multi-RAT terminal.
- the multi-RAT terminal may need to perform initial connection with the first system.
- the second system is a system having a small range of coverage and may be a local area communication system (WLAN).
- the second system may be a system that is responsible for transmitting data.
- the second system may be a Wi-Fi system. That is, the second system refers to a system that can be added to or deleted from the multi-RAT network as needed.
- the second system may be mainly used for transmission and reception of data requiring high bandwidth (Higher BW).
- QoS specific flow
- the connection or disconnection between the second system and the multi-RAT terminal may be possible after confirmation from the first system.
- the fact that the multi-RAT terminal is connected to the second system may mean that the multi-RAT terminal is ready to transmit / receive data with the second system or transmit / receive data. If it is detected that the multi-RAT terminal has entered the coverage of the second system, the multi-RAT terminal may receive access information from the first system to the second system. In this case, actual data transmission and reception may not occur immediately. In addition, when the multi-RAT terminal has data to be transmitted and received through the second system, access information for the flow may be received from the first system. In this case, actual data transmission and reception may occur immediately.
- the access point may operate in the same manner as the terminal having the ability to communicate with the first system.
- the first system and the second system are connected by wire or wirelessly. That is, the base station in the first system and the base station in the second system may be connected by wire (FIG. 1B) or wirelessly through the backbone network (FIG. 1A).
- the first system is a WiMAX system and the second system is a Wi-Fi system, unless otherwise specified for convenience of description. Accordingly, a base station corresponding to the first system is referred to as a 'base station or ABS', and a base station corresponding to the second system is referred to as 'AP'.
- the connection with the first system may be used as the connection with the base station (or ABS) and the connection with the second system with the AP.
- FIG. 2 is a flowchart illustrating a method for a multi-RAT terminal to transmit and receive data through a first system and a second system.
- the multi-RAT terminal performs an initial network entry process with the base station (S210).
- the multi-RAT terminal transmits an indicator to the base station indicating that the multi-RAT terminal supports the multi-RAT through an initial entry process with the base station.
- the indicator may be a multi-RAT MS capability field.
- the indicator, that is, the multi-RAT terminal capability field may be 1 bit in size.
- the indicator may be transmitted through a registration procedure performed during the initial network entry process with the base station.
- the indicator may be transmitted to the base station through a registration request or a registration response message (REG-REQ / RSP message).
- the indicator when the indicator is set to '1', this indicates that the terminal supports multiple RATs, and when the indicator is set to '0', this indicates that the terminal does not support multiple RATs.
- the base station when the base station receives a registration request or registration response message including an indicator (for example, set to '1') indicating that the base station has the capability of supporting the multi-RAT from the multi-RAT terminal, the base station transmits to the multi-RAT terminal.
- Information indicating that a separate multi-RAT capability negotiation process for supporting the multi-RAT terminal will be performed after the initial network entry process ends or after a predetermined time may be transmitted.
- the notification information when the notification information is set to '1', this indicates that the base station and the multi-RAT terminal perform a separate capability negotiation process to support the multi-RAT, and when the notification information is set to '0', the separate capability Indicates that the negotiation process does not need to be performed.
- the multi-RAT terminal and the base station performs a multi-RAT capability negotiation process (S220).
- the multi-RAT capability negotiation process is generally performed after the end of the network (re) entry process, but may also be performed during the network (re) entry process with the base station.
- the multi-RAT terminal and the base station may perform the multi-RAT capability negotiation process through the registration process of the base station and the multi-RAT terminal.
- the multi-RAT MS and the base station transmit / receive information on multi-RAT capability negotiation through a registration request / response (REG-REQ / REG-RSP) message.
- REG-REQ / REG-RSP registration request / response
- the multi-RAT terminal performs an AP scanning process for accessing the second system based on the second system related information received from the base station (S230).
- the multi-RAT MS performs a scanning process on the neighbor AP periodically or in an event-triggered manner to access the second system.
- connection to all data transmitted to the multi-RAT terminal is made through a dynamic service procedure (DSx procedure) with the base station of the first system, and communication with the second system of the multi-RAT terminal is performed by the base station of the first system. Assume that data for a specific flow is transmitted to the second system under determination.
- DSx procedure dynamic service procedure
- the AP scanning process for the multi-RAT terminal to access the second system receives a multi-RAT scan command message from a base station, performs scanning based on the received multi-RAT scan command message, and outputs a result of the scanning.
- a multi-RAT scan report message may be transmitted for reporting.
- a scanning process for accessing the second system of the multi-RAT terminal will be described in detail with reference to FIG. 4 to be described later.
- the multi-RAT terminal performs a management (or operation) procedure with the second system (S240).
- the management procedure with the second system refers to a process such as connection, disconnection, and connection change of the multi-RAT terminal with the second system.
- the management procedure of the second system is controlled by the first system.
- the multi-RAT terminal After performing the access procedure with the second system, the multi-RAT terminal transmits and receives data through the AP of the second system.
- the multi-RAT terminal in order for the multi-RAT terminal to access the second system, it must receive an acknowledgment for the connection from the first system to the second system.
- the base station selects an AP for access by the multi-RAT terminal and confirms the state of the selected AP before the multi-RAT terminal sends an acknowledgment of access to the second system. .
- the base station may transmit information on the multi-RAT terminal to the selected AP in advance.
- the multi-RAT terminal may also transmit necessary or useful information for accessing the AP.
- the necessary or useful information may include an SSID, an AP MAC address, a WEP key, a channel number (frequency information), an AP protocol version (11a / b / n...), offset information between a beacon and a frame of a base station (Beacon).
- the relative position of a may be expressed as a difference from a specific frame time and transmitted.
- the multi-RAT MS when the multi-RAT MS recognizes that the AP is in coverage of the second system as a result of performing the AP scanning for access to the second system, the multi-RAT MS accesses the base station of the first system with the second system. You may ask.
- Messages required for the management procedure of the second system may include the following.
- the multi-RAT terminal can transmit / receive data to / from the second system and simultaneously transmit / receive data with the first system.
- data transmitted and received with the multi-RAT terminal through the AP is controlled by the first system.
- FIG. 3 is a flowchart illustrating a multi-RAT capability negotiation process between a multi-RAT terminal and a first system.
- the multi-RAT capability negotiation process between the multi-RAT terminal and the base station is performed after the network (re) entry.
- the multi-RAT capability negotiation process may be omitted. Because, through the initial network entry procedure between the multi-RAT terminal and the base station, since the capability negotiation for the multi-RAT has already been performed, it is unnecessary to perform the same procedure again when the multi-RAT terminal reenters the same system. This is because of the overhead.
- the target base station of the first system may perform a multi-RAT capability negotiation with the multi-RAT terminal in advance from the serving base station of the first system through a backbone network.
- the process of the multi-RAT terminal performing the multi-RAT capability negotiation process with the first system may be as follows.
- the base station may transmit the information related to the second system to the multi-RAT terminal (S221). That is, the base station may broadcast or unicast the AP information to the multi-RAT MS when there is common information on the APs of the second system that the multi-RAT MS should receive.
- the information related to the second system refers to information about a heterogeneous system belonging to the same coverage as the first system.
- the multi-RAT terminal may not need to know all of the second system and the information related to the second system included in the first system.
- the base station may transmit unicast to the multi-RAT terminal only a list of information related to (or required) the multi-RAT terminal without transmitting all information related to the second system and the second system.
- the list may be transmitted during the multi-RAT capability negotiation process.
- the MultiSystem Capability Request message may include, for example, an 802.11 MAC address of a terminal, information on an existing access AP (eg, information on an AP preferred by a terminal), protocol version information of 802.11, and traffic to be communicated through 802.11. And the like.
- the MAC address of 802.11 is required for authentication information, and when the existing access AP information is included in the MultiSystem Capability Request message, it is transmitted only to the base station to which the existing access AP belongs.
- the base station transmits a multi-system capability response message to the multi-RAT terminal in response to the multi-system capability request message (S223).
- the MultiSystem Capability Response message may include information about candidate APs.
- the multi-RAT capability negotiation process may be omitted, and when the multi-RAT terminal performs handover, the capability base station may perform the capability negotiation process in advance through the backbone network.
- the base station may store information obtained through a multi-RAT capability negotiation process with the multi-RAT terminal for a predetermined time. That is, the multi-RAT information retention timer is newly defined, and the obtained information is stored until the multi-RAT information retention timer expires. After the timer expires, the obtained information may be discarded.
- the multi-RAT MS performs network re-entry to the base station before the multi-RAT information maintenance timer expires, the multi-RAT capability negotiation process can be omitted.
- FIG. 4 is a flowchart illustrating a scanning process of a second system of a multi-RAT terminal.
- the base station can start scanning for the second system under the direction of the base station without the request of the multi-RAT terminal.
- the condition that the base station requests scanning is a case where it is determined that a specific data flow needs to communicate using WiFi or a preferred AP is registered in its cell, in which case the multi-RAT terminal Instructs to perform scanning of the neighboring AP.
- the base station transmits a multi-RAT scan command message (Multi RAT_SCN-CMD message) or AAI-SCN-RSP to the multi-RAT terminal (S231).
- the multi-RAT scan command message and the AAI_SCN-RSP may include the SSID, the beacon transmission period, and the scanning interval information of the neighboring AP so that the multi-RAT terminal can quickly detect the neighboring AP.
- the multi-RAT scan command message and AAI_SCN-RSP are BSSType (whether infrastructure BSS, IBSS, or both), BSSID, SSID, scan type (active or passive), ProbeDelay (delay used before sending probe frame) Time), ChannelList, and MinMax Channel Time.
- the base station transmits MULTIRAT_SCAN_DEADLINE to the multi-RAT terminal. If the base station instructs the multi-RAT MS to scan, and if it does not receive a response message such as SCN-REP for MULTIRAT_SCAN_DEADLINE time, the base station allows the base station to transmit and receive data of the flow through the first system.
- the scanning of the multi-RAT terminal may be requested by the multi-RAT terminal directly to the base station of the first system for the connection with the second system, without the indication of the base station.
- the multi-RAT terminal and the base station may perform scanning on the neighboring AP through a probe request / response transmission / reception process.
- the multi-RAT terminal performs scanning for access to the second system even in the process of transmitting and receiving data with the base station of the first system.
- the multi-RAT MS may indicate only the SCN-REP transmission scheme through the SCN-CMD message without setting the scanning interval with the base station.
- the multi-RAT MS when the multi-RAT MS receives the multi-RAT scan command message from the BS, the multi-RAT MS receives the beacon from the AP based on the information included in the received multi-RAT scan command message, or receives and transmits a beacon from the AP.
- the scanning of the AP around the RAT terminal is performed (S232).
- the APs around the multi-RAT terminals may be APs of a second system within base station coverage of the first system.
- the multi-RAT MS transmits a multi-RAT scan report message (MultiRAT_SCN-REP message) or AAI_SCN-REP to the base station of the first system (S233). That is, the multi-RAT terminal transmits the scanning result of the detected AP to the base station.
- the multi-RAT terminal may transmit a received signal strength indicator (RSSI) for each AP or preferred AP information of the multi-RAT terminal together.
- RSSI received signal strength indicator
- the scan report message or AAI_SCN-REP may be sent, for example, once, periodically, on an event trigger basis or on a trigger condition basis under the indication of the CMD message.
- the multi-RAT terminal may transmit the scanning result of the AP to the base station according to the definition of the AP specific trigger condition.
- an AP-specific trigger condition may be defined for each flow.
- the multi-RAT MS may transmit the multi-RAT scan report message to the base station in an event triggered manner.
- the multi-RAT MS transmits a multi-RAT scan report message to the base station.
- the multi-RAT terminal scans for periodic scan report (eg, when the report mode is set to 'Ob01') or one scan report (eg, when the report mode is set to '0b11'). Except within the interval, the scan result may be reported to the base station at the time specified in the multi-RAT scan command message.
- the scanning result report for the AP may be stopped after all the scanning periods in the multi-RAT scan command message.
- the multi-RAT scan report message also includes all available scanning results for the requesting APs specified in the multi-RAT scan command message.
- the multi-RAT MS sends a multi-RAT neighbor advertisement message at any time to report the scanning result to the base station or to have the system information about the requested system and optionally the system information about other RATs determined that the base station is near the multi-RAT MS.
- a multi-RAT scan report message can be sent to the base station for unicast reception from the base station.
- the multi-RAT terminal instructs the base station to filter the neighbor second system list based on the requested radio type by including a neighbor request RAT type indicator and / or SSIDs (or BSSID, MAC address) in the scan report message. can do.
- the base station receives the scanning results for the plurality of APs from the multi-RAT terminal, that is, when the multi-RAT scan report message is received, the same operator, priority of the terminal, channel quality, load balancing ) Or by considering the transmitted traffic, it is possible to select the optimal system, that is, the AP to inform the multi-RAT MS.
- the multi-RAT terminal may use a message previously transmitted and received instead of the multi-RAT scan command / report message defined above.
- the existing message includes information indicating that the scanning of the multi-RAT terminal is to transmit and receive data using the Multi RAT system. . That is, by newly defining a field capable of indicating the SSID, the BSSID or the MAC address of the target system, the scanning target of the multi-RAT terminal can be indicated.
- the multi-RAT terminal performs an access procedure with the second system and then transmits and receives data with the second system.
- the connection, disconnection, and change of connection with the second system correspond to an operation (or management) process of the second system.
- the first system also controls the operation of the second system.
- the multi-RAT terminal in order for the multi-RAT terminal to access the second system, it must receive an acknowledgment for the connection from the first system to the second system.
- the base station selects an AP for access by the multi-RAT terminal and confirms the state of the selected AP before the multi-RAT terminal sends an acknowledgment of access to the second system. .
- the base station transmits the information on the multi-RAT terminal to the selected AP in advance.
- the multi-RAT terminal may also transmit necessary or useful information for accessing the AP.
- the necessary or useful information may include an SSID, an AP MAC address, a WEP key, a channel number (frequency information), an AP protocol version (11a / b / n...), offset information between a beacon and a frame of a base station (Beacon).
- the relative position of a may be expressed as a difference from a specific frame time and transmitted.
- the multi-RAT MS when the multi-RAT MS recognizes that the AP is in coverage of the second system as a result of performing the AP scanning for access to the second system, the multi-RAT MS accesses the base station of the first system with the second system. You may ask.
- the second system operation refers to the connection or disconnection of the second system and the multi-RAT terminal and the change of the connection between the multi-RAT terminal and the second system, and the second system operation is controlled by the base station, that is, the first system. .
- a process of accessing (or connecting) a multiple RAT terminal to a second system that is, a process of transmitting and receiving data simultaneously with a first system and a second system by adding a second system Take a look.
- FIG. 5 is a flowchart illustrating a process of adding a second system, that is, a process of accessing a second system by a multi-RAT terminal in a second system operation method.
- a multi-RAT MS or a base station can perform a multi-RAT access request.
- the multi-RAT access request process may be performed through a second system access request / response message.
- the multi-RAT terminal When the second system is added by the request of the multi-RAT terminal, when the multi-RAT terminal detects a second system satisfying a specific condition by scanning, the multi-RAT terminal transmits the second system request message to the base station. As a result, the base station may request a connection with the second system.
- the base station checks the state of the AP accessible to the multi-RAT terminal (S241).
- the base station can instruct the connection between the multi-RAT terminal and the second system by transmitting a second system command message to the multi-RAT terminal (S242).
- control for accessing the multi-RAT terminal with the multi-RAT that is, the transmission of control information is performed by the base station of the first system.
- This allows the multi-RAT terminal to simply transmit and receive data with the second system, so that the QoS for the data can follow the scheme supported by the first system.
- the transmission of the control information may be performed through a second system access command message.
- the second system access command message may include selected AP information, flow information transmitted to the second system, an authentication method (open system or shared key), and the like.
- the selected AP information is AP 2.
- the multi-RAT terminal completes access and traffic stream (TS) configuration with a specific AP by referring to AP information in the second system command message by an access command of the second system of the base station (S243). For example, an ADDTS request / response process of 802.11e may be performed.
- the multi-RAT MS informs the base station of the successful access result with the AP (S244).
- the multi-RAT terminal notifies the base station of a successful access to AP 2.
- the second system indication message may include a mapping result of a flow ID (FID) and an association ID (AID) / traffic stream ID (TSID) for the corresponding flow.
- FID flow ID
- AID association ID
- TSID traffic stream ID
- the multi-RAT MS transmits and receives data for a specific flow through the second system. That is, the multi-RAT terminal is to transmit and receive data simultaneously with the first system and the second system in accordance with the data flow (S245).
- the base station is transmitted to the multi-RAT terminal through the AP.
- the multi-RAT MS may perform reconnection or disconnection with the AP by transmitting and receiving the second system command / instruction message with the base station.
- the multi-RAT terminal is transmitting and receiving data with the AP
- the second system is out of WLAN coverage and there is no AP in the vicinity
- the data transmitted and received with the AP is cut off through the base station of the first system.
- the base station may control seamless flow mobility between the AP and the base station so as to transmit seamlessly.
- the base station when the multi-RAT terminal is transmitting and receiving data to and from the AP of the second system, when the multi-RAT terminal detects the neighboring AP, the base station can seamlessly transmit and receive data currently transmitted and received by the multi-RAT terminal from the neighboring AP in the AP. It can be controlled to be transmitted and received.
- a WLAN is used to provide a high data rate in a narrow area. If the multi-RAT MS is moving at a high speed, even though the multi-RAT MS is moving at a high speed, the time required to pass through the narrow coverage of the WLAN may be faster, and data communication through the process of establishing / disconnecting the connection with the WLAN may be performed. Unnecessary operation of the second system may be requested to the RAT terminal and the base station.
- the base station when a multi-RAT terminal meets certain criteria for connecting to a WLAN, the base station starts a timer, for example, SecondarySystemJoin_WaitngTime, and once again when the timer expires. Check. Even at this time, the base station transmits the SS-CMD message for the connection of the WLAN to the multi-RAT terminal only when the criteria are satisfied.
- the reference for connecting to the WLAN may mean a value for a parameter related to cell characteristics such as cell channel quality.
- the multi-RAT MS determines that the channel state with the second system currently connected is not good, the multi-RAT MS performs scanning on the neighboring second system. In this case, the scanning may be performed by the base station indication or the multi-RAT terminal itself as described above.
- the RAT terminal terminates the connection with the currently connected second system.
- Multi-RAT Seamless Flow Mobility must be supported to achieve seamless flow mobility without
- the base station may release the connection with the second system when transmission of data transmitted and received by the multi-RAT terminal to the second system is completed.
- the change with the second system that is, the handover between the second systems, is performed only for a specific connection.
- the change of the second system may allow handover to be performed seamlessly between the second systems through the first system.
- the multi-RAT terminal or the base station determines that the channel state of the second system to which the multi-RAT terminal is currently connected is not good, the multi-RAT terminal or the base station terminates the connection with the second system to which the multi-RAT terminal is currently connected and performs a handover (HO) to another second system.
- HO handover
- the base station transmits the SS-CMD message to the multi-RAT terminal, thereby informing the multi-RAT terminal that there is no longer data transmission and reception through the current serving secondary system. Thereafter, the base station instructs the multi-RAT terminal to transmit and receive data transmitted through the first system, and instructs the multi-RAT terminal to transmit and receive data with the new second system when transmission of the existing data is completed. That is, seamless handover between the second systems may be performed through the first system.
- the multi-RAT MS performs a handover between the first systems
- the coverage of the second system spans the boundary between the first systems
- the multi-RAT MS uses the second system, thereby making it possible to seamlessly perform the first operation. Inter-system handover can be performed.
- the base station when the multi-RAT terminal has a fast movement speed and is moving in the first system as an example, WiMAX coverage, the base station does not perform connection with the second system even if the multi-RAT terminal is in the coverage of the second system. Can be directed. That is, the management of the second system may be performed based on the speed of the multi-RAT terminal.
- FIGS. 6 to 8 a process of connecting, reconnecting, and disconnecting a multi-RAT terminal with a second system will be described in more detail.
- FIG. 6 is a flowchart illustrating a process of connecting a multi-RAT terminal with a second system.
- the multi-RAT terminal performs data communication for flow 0 with the base station (S302). Thereafter, the multi-RAT terminal performs data communication with respect to the flow 1 through the base station and the AAI_DSA (S304). In addition, the multi-RAT terminal receives a scan command message from the base station (S306), scans the neighboring APs, and transmits a scan report message to the base station (S308). At this time, the base station determines the connection configuration between the multi-RAT terminal and a specific AP based on the scan report message.
- Control for connection with the AP is performed through the base station (S310).
- the multi-RAT terminal may request the base station to connect with the AP (eg, SS_REQ).
- the AP selected from the base station to the multi-RAT terminal, information on the flow transmitted to the second system, and an authentication method (public system or shared key) are transmitted.
- the SS-CMD may include whether or not the transition to the Doze mode after the connection, the base station may indicate the transition to the Doze mode of the multi-RAT terminal to save power.
- association deadline and association deadline that the multi-RAT MS needs to perform synchronization, authentication, and connection with the AP, it means that data transmission and reception to the second system is possible from this time after receiving the SS_IND message.
- An action time may be further included in the SS-CMD.
- the multi-RAT MS transmits a message indicating that the SS-CMD has been well received to the base station (S312), receives a beacon frame from the AP indicated by the SS-CMD, and performs synchronization with the corresponding AP (S314). Or perform an authentication procedure using a shared key (S316), and performs the connection by transmitting and receiving a connection request / response with the AP receives an AID (S318).
- the multi-RAT terminal informs the base station of the successful connection with the AP (S320). At this time, the multi-RAT MS transmits a mapping result of FID (Flow ID) and AID (Association ID) / TSID (Traffic Stream ID) for the corresponding flow, and an IP address allocated from the AP to the base station. If the multi-RAT MS establishes a connection with the AP without the BS's instruction, the multi-RAT MS should inform the base station. For this purpose, the multi-RAT MS may transmit the SS_IND message to the base station without request.
- FID Flow ID
- AID Association ID
- TSID Traffic Stream ID
- the multi-RAT terminal is able to transmit and receive data for a specific flow through the second system (S322).
- FIG. 7 is a flowchart illustrating a process of reconnecting a multi-RAT terminal with a second system.
- the multi-RAT terminal performs data communication for flow 0 with the base station (S302). Thereafter, the multi-RAT terminal performs data communication with respect to the flow 1 through the base station and the AAI_DSA (S304). In addition, the multi-RAT terminal receives a scan command message from the base station (S306), scans the neighboring APs, and transmits a scan report message to the base station (S308). At this time, the base station determines a reconnection configuration (handover) from the AP connected to the multi-RAT terminal to a specific AP based on the scan report message.
- the base station transmits the SS_CMD message for reconnection with the AP to the multi-RAT terminal (S310 ').
- the SS_CMD message may include information on a flow to be transmitted to the newly selected AP and the second system, shared key information, and the like.
- the SS_CMD message may further include whether the multi-RAT MS transitions to the Doze mode after reconnection, an association deadline, an end of connection and an action time. In this case, the multi-RAT terminal may disconnect from the existing AP at the disconnection time and start communication with the newly selected AP at the action time. This value must also be after the reassociation deadline.
- the multi-RAT terminal transmits an acknowledgment message indicating that the SS_CMD message is well received to the base station (S312).
- the multi-RAT terminal disconnects from the existing AP at the disconnection time and starts communication with the newly selected AP at the action time (S324 to S330). That is, it reconnects with the new AP.
- This process is performed by the multi-RAT MS transmitting and receiving a reconnection request / response with the new AP. If, when the reconnection request, the multi-RAT MS informs the new AP address of the existing AP, the authentication process can be omitted (S326, S328).
- the multi-RAT MS is assigned an AID through the reconnection response.
- the multi-RAT MS informs the base station of the successful connection and result with the new AP (S332). At this time, the IP address allocated from the new AP is transmitted as a result of mapping the FID (Flow ID) and the AID (Association ID) / TSID (Traffic Stream ID) for the flow.
- the multi-RAT MS may transmit an SS_IND message to the base station without a request.
- the multi-RAT terminal is able to transmit and receive data on a specific flow from the Action Time through the new AP (S334).
- FIG. 8 is a flowchart illustrating a process of releasing a connection with a second system by a multi-RAT terminal.
- the multi-RAT terminal performs data communication for flow 0 with the base station (S302). Thereafter, the multi-RAT terminal performs data communication with respect to the flow 1 through the base station and the AAI_DSA (S304). In addition, the multi-RAT terminal receives a scan command message from the base station (S306), scans the neighboring APs, and transmits a scan report message to the base station (S308). At this time, the base station determines to disconnect from the AP connected to the multi-RAT terminal based on the scan report message.
- the multi-RAT MS receives an SS_CMD message for disconnection from the base station from the base station (S310 ").
- the SS_CMD message includes an AP to be disconnected and a connection termination (and operation) time.
- the multi-RAT MS transmits an acknowledgment message indicating that the SS_CMD message is well received.
- the multi-RAT terminal transmits a connection release notification frame to the current AP at the connection termination time (S336).
- the multi-RAT terminal informs the base station of the successful disconnection with the AP (S340).
- the multi-RAT MS may transmit the SS_IND message to the base station without request.
- the multi-RAT terminal can transmit and receive data for a specific flow through the base station again (S340).
- the multi-RAT MS proposed in the present specification is in an idle mode in the first system, but performs data traffic communication through the second system, for efficiently performing paging of the first system Look specifically at the method.
- Multi RAT multi-radio access technology
- the multi-RAT terminal under the control of the base station of the first system creates a connection for data traffic through the first system, the data for the corresponding flow of the terminal continues based on the location or preference of the terminal through the first system.
- the second system To communicate via the second system when the terminal is in the second system area.
- the idle mode terminal wakes up at a specific time to monitor paging messages coming to it and checks whether it enters the active mode.
- the multi-RAT terminal controlled by the base station or server of the first system can know whether the corresponding terminal is communicating through the second system, and the base station or server of the first system knowing this can consume the battery of the terminal.
- a paging message that may be transmitted through the first system may be transmitted through the second system.
- the terminal When the base station or the server of the first system determines to switch specific flow traffic to the second system, the terminal transmits the traffic to the terminal through a message (or an application message) such as SS-CMD. Inform the second system transmission.
- a message or an application message
- an indication indicating whether the UE monitors the first system paging message may be included in this message.
- FIG. 10 is a diagram illustrating a process of connecting a multi-RAT terminal with a second system according to one embodiment disclosed herein.
- control for connection with the AP is performed through the base station.
- the base station informs the multi-RAT terminal of the information on the selected AP through a second system selection command (SS-CMD) message (S311).
- the multi-RAT terminal may request the base station to connect with the AP (eg, SS_REQ).
- the AP selected from the base station to the multi-RAT terminal, information on the flow transmitted to the second system, and an authentication method (public system or shared key) are transmitted.
- the SS-CMD may include whether the transition to the Doze mode after the connection, the base station may indicate the transition to the Doze mode of the multi-RAT terminal to save power.
- association deadline and association deadline that the multi-RAT MS needs to perform synchronization, authentication, and connection with the AP, it means that data transmission and reception to the second system is possible from this time after receiving the SS_IND message.
- An action time may be further included in the SS-CMD.
- the SS-CMD may further include an indication indicating whether the UE monitors the first system paging message, for example, a paging message transmission indication. . If the paging message transmission instruction is 1, the terminal that has completed the configuration with the second system does not monitor the paging message through the first system after entering the idle mode of the first system. . Instead, the multi-RAT terminal can receive the paging message via the second system. However, if the paging message transmission instruction is 0, even when the configuration with the second system is completed, the terminal enters an idle mode of the first system and then monitors a paging message through the first system. do. Naturally, the meaning of the value of the paging message transmission indication may be applied to the contrary.
- the paging message transmission indication is 1, when the UE receives the DREG-REQ / RSP message for entering the idle mode of the first system while connected to the second system, it is necessary to monitor the paging message transmitted to the first system. none.
- the multi-RAT MS When the multi-RAT MS succeeds in both synch / authen / association with the AP, it transmits an AAI-SS-IND message including a value indicating that the connection establishment with the AP has succeeded (S320). At this time, the multi-RAT MS is a result of the mapping of the flow ID (FID) and Association ID (AID) / Traffic Stream ID (TSID) / TSID (Traffic Stream ID) for the flow, the status indicating success / failure, and the IP address assigned from the AP send.
- FID flow ID
- AID Association ID
- TSID Traffic Stream ID
- TSID Traffic Stream ID
- TSID Traffic Stream ID
- the multi-RAT terminal is able to transmit and receive data for a specific flow through the second system (S322).
- the base station of the first system transmits the paging message transmission indication to the multi-RAT terminal through the SS-CMD message, there is an advantage that the indication can be transmitted only to the multi-RAT terminal. In other words, since the corresponding indication is not transmitted to the terminal other than the multi-RAT terminal, efficient use of resources is possible.
- the base station of the first system may transmit a paging message transmission indication indicating whether the terminal monitors a paging message through an AAI-DREG-RSP message transmitted when the terminal enters an idle mode. Can be.
- the corresponding bits may be transmitted to other terminals other than the multi-RAT terminal as well as the multi-RAT terminal.
- FIG 11, 12A, and 12B are diagrams illustrating a process in which a terminal enters an idle mode according to an embodiment of the present disclosure.
- FIG. 11 is a diagram illustrating an idle mode entry process of a terminal initiated by a terminal according to an embodiment of the present disclosure.
- the terminal In the case of entering the idle mode initiated by the terminal, the terminal starts the idle mode by releasing registration with the base station of the terminal and sending an AAI-DREG-REQ message including a parameter indicating a request for initiating the idle mode of the terminal.
- a signal for transmitting is transmitted (S412).
- the base station determines to allow the idle mode request initiated by the terminal, the base station transmits the AAI-DREG-RSP to the terminal in response to the AAI-DREG-REQ message (S414). At this time, the base station transmits to the terminal including the paging message transmission instruction indicating whether the terminal monitors the paging message in the AAI-DREG-RSP message.
- 12A and 12B are diagrams illustrating an idle mode entry process of a terminal initiated by a base station according to one embodiment disclosed herein.
- the base station may transmit a signal for starting the idle mode to the terminal by transmitting an AAI-DREG-RSP message in an unsolicited manner (S422). ).
- the base station transmits a paging message transmission instruction indicating whether the terminal monitors the paging message in the AAI-DREG-RSP message to the terminal.
- the terminal transmits an AAI-DREG-REQ message to the base station in response to the AAI-DREG-RSP message (S424), and the base station transmits an AAI-MSG-ACK message to the terminal in response to the AAI-DREG-RSP message (S426). ).
- the base station transmits an AAI-DREG-RSP message including an REQ-Duration in an unsolicited manner, thereby starting the idle mode. Can be transmitted to the terminal (S432). At this time, the base station transmits to the terminal including a paging message transmission indicator indicating whether the terminal monitors the paging message in the AAI-DREG-RSP message.
- the terminal transmits an AAI-DREG-REQ message to the base station when the REQ-Duration expires (S434), and the base station transmits another AAI-DREG-RSP message to the terminal (S436).
- FIG. 13 is a conceptual diagram illustrating a multi-radio access technology (Multi RAT) network to which another embodiment of the present disclosure can be applied.
- Multi RAT multi-radio access technology
- the multi-RAT terminal when the multi-RAT terminal receives paging through the second system (Case 2), the multi-RAT terminal performs network reentry through the first system and communicates with both the second system and the first system. Can be.
- the multi-RAT terminal may communicate existing data traffic through the second system, and voice traffic through the first system.
- the multi-RAT terminal is defined in the DREG-RSP message received through the first system.
- An idle mode procedure in the first system may be performed by referring to parameter values such as a paging cycle and a paging offset that have been used.
- the network reentry is performed to the first system for transmission of data traffic transmitted and received through the second system, and the data traffic is transmitted. Switching to the first system may be possible.
- FIG. 14 is a conceptual diagram illustrating a process of receiving a paging message through a second system by a multi-RAT terminal according to one embodiment of the present specification.
- the base station may transmit a message instructing the multi-RAT terminal to perform network reentry to the first system through the second system. (Method 1).
- This message may be the same message that the base station has previously transmitted to the multi-RAT terminal, or may be an indication message for notifying only paging.
- the paging controller may transmit a paging message to the multi-RAT terminal through the second system IP address (Method 2).
- This message may be the same message that the paging controller has previously transmitted to the base station, or may be an indication message indicating only paging.
- the base station may transmit the paging message to the multi-RAT terminal through a layer 2 tunneling scheme.
- the base station or server of the first system knows the second system IP address of the terminal.
- the establishment of the second system connection of the multi-RAT terminal is established by the control of the base station or server of the first system, and in this process, the second system IP address is preferably transmitted to the base station or server of the first system.
- the multi-RAT MS can recognize that the message transmitted to the IP address of the paging controller or the base station is a paging message (or layer 2 message).
- the multi-RAT terminal knows the IP addresses of the paging controller and the base station in advance before communicating with the second system. If the multi-RAT terminal receives a message corresponding to the IP address of the base station / paging controller, it can be recognized as a paging message.
- 15A and 15B are conceptual views illustrating a process of transmitting a paging message through a second system by a multi-RAT terminal according to one embodiment of the present specification.
- the base station has been instructed to enter an idle mode (e.g., DRX mode of LTE) procedure via a message such as DREG-RSP (for WiMAX), but it may be If it is set that there is no need to monitor the paging message through the 1 system, the idle mode of the first system of the multi-RAT terminal is performed by the existing terminal except that the paging message is not monitored. The procedure must be followed.
- an idle mode e.g., DRX mode of LTE
- DREG-RSP for WiMAX
- the second system-idle mode terminal processes in the same manner as the existing idle mode, but recognizes that the terminal is communicating via the second system (second system-idle mode from the base station's point of view). If the paging message is transmitted to the terminal, the base station should transmit a message through the second system instructing the terminal to receive a paging message transmitted through the first system (for the first system through the second system). Only for paging message indication).
- the terminal does not monitor the first system but communicates only through the second system (second system-idle mode from the terminal perspective). If a paging message for the first system is received via the second system, an appropriate procedure must be performed via the first system.
- a terminal when notifying only a paging message indication for a first system through a second system (S512), a terminal sets a paging cycle / offset when entering an idle mode of a first system.
- a paging message is received through the first system using an offset, and a procedure corresponding to an action code requested by the message is performed (S516). That is, the indication is used to indicate that a paging message will be sent to the first system.
- a procedure matching the action code (action code) requested by the message is performed (S524).
- the terminal receives the same message from the AP as the paging message transmitted from the first system through the second system. In this case, the message is transmitted only when the terminal is paged.
- the idle mode action code procedure of the terminal includes a network reentry procedure, a location update procedure, and the like.
- the base station or server of the first system may inform the terminal through the second system as needed, and the terminal receiving the system information updates the system information through the first system.
- the terminal does not need to receive a location update or paging message or perform a network reentry procedure through the first system, it is not necessary to update the system information and the terminal. It is preferable to update only when necessary after checking whether system information is updated in the first system before performing communication / message transmission through the first system.
- a typical idle mode terminal should perform a location update when a specific condition is satisfied. For example, when the terminal detects that the selected preferred base station does not support the currently allocated page group (s) (paging group based update), the period for performing the location update process before expiration of the idle mode timer may occur.
- a location update must be performed once as a timer based update or as part of a sequential power down procedure.
- the terminal may inform its mobility (slow, medium, fast) during the location update procedure. The mobility information of the terminal may be used when allocating new paging group (s) to the terminal.
- the deregistration identifier, paging cycle, and paging offset of the terminal may be updated (MBS update).
- the idle mode of the first system of the multi-RAT terminal disclosed herein means that there is still a connection to the second system, unlike the existing idle mode terminal, the existing location update may not need to be performed.
- the idle mode terminal of the first system performs a location update only when the UE moves from the AP of the serving base station to an AP in another base station area.
- the idle mode terminal of the first system is expected to receive only network reentry to the first system through the second system.
- the idle mode terminal of the first system does not need to receive a message having the same format as a conventional paging message.
- the base station or server of the first system may instruct only performing network reentry to the first system through the second system or may direct paging message monitoring to the first system.
- Parameters that may be sent in the simplified paging message sent to the second system include a network reentry indication and a paging message indication.
- the terminal performs network reentry to the first system (switches to an active mode terminal). If the corresponding bit of the paging message indication is 1, the terminal monitors the paging message through the first system (maintain idle mode).
- the base station Since the base station recognizes that the terminal is in an idle mode but is communicating through the second system, the context of the terminal should not be deleted even if there is no periodic location update.
- the base station may set the mobility of the terminal to slow (or no mobility) when the terminal enters the idle mode.
- the terminal may include a paging cycle and a paging offset defined in the DREG-RSP message received through the first system.
- the idle mode procedure of the first system is performed by referring to parameter values such as paging offset).
- the terminal If the terminal operates in an idle mode without a location update, the terminal notifies that the data traffic communication of the second system area is finished through the location update to the first system.
- the location update of the terminal to the first system means that the terminal resumes monitoring of the paging message to the first system.
- Embodiments and modifications described above may be combined. Accordingly, the embodiments may not be implemented alone, but may be implemented in combination as necessary. Such a combination can be easily implemented by those skilled in the art after reading the present specification, and the combination will not be described in detail below. However, even if not described, it should not be excluded from the present invention, it should be construed as being included in the scope of the present invention.
- Embodiments and modifications described above may be implemented through various means.
- embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.
- a method according to embodiments of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs). Field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs Field programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- the method according to the embodiments of the present invention may be implemented in the form of a module, a procedure, or a function that performs the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
- the method according to the present invention may be stored in a storage medium (eg, internal memory, flash memory, hard disk, etc.) and may be executed by a processor (eg a microprocessor). It can be implemented as codes or instructions within a program. This will be described with reference to FIG. 16.
- a storage medium eg, internal memory, flash memory, hard disk, etc.
- a processor eg a microprocessor
- FIG. 16 illustrates an internal block diagram of a terminal and a base station in a wireless access system to which embodiments of the present specification can be applied.
- the terminal 10 includes a control unit 11, a memory 12, and a radio communication (RF) unit 13.
- RF radio communication
- the terminal 10 may be fixed or mobile and may be called by other terms such as a user equipment (UE), a user terminal (UT), a subscriber station (SS), a wireless device, an advanced mobile station (AMS), and the like. have.
- the terminal includes the multi-RAT terminal.
- the terminal also includes a display unit, a user interface unit, and the like.
- the controller 11 implements the proposed function, process and / or method. Layers of the air interface protocol may be implemented by the controller 11.
- the memory 12 is connected to the control unit 11 and stores a protocol or parameter for performing wireless communication. That is, it stores the terminal driving system, the application, and the general file.
- the RF unit 13 is connected to the control unit 11 and transmits and / or receives a radio signal.
- the display unit displays various information of the terminal, and may use well-known elements such as liquid crystal display (LCD) and organic light emitting diodes (OLED).
- the user interface may be a combination of a well-known user interface such as a keypad or a touch screen.
- the base station 20, 30 includes a control unit 21, a memory 22, and a radio frequency unit (RF) unit 23.
- RF radio frequency unit
- the base station (20, 30) generally refers to a fixed station (fixed station) to communicate with the terminal, it may be called in other terms, such as NodeB (NodeB), Base Transceiver System (BTS), Access Point (Access Point) have.
- NodeB NodeB
- BTS Base Transceiver System
- Access Point Access Point
- One or more cells may exist in one base station.
- the control unit 21 implements the proposed function, process and / or method. Layers of the air interface protocol may be implemented by the controller 21.
- the memory 22 is connected to the control unit 21 to store a protocol or parameter for performing wireless communication.
- the RF unit 23 is connected to the control unit 21 to transmit and / or receive a radio signal.
- the controllers 11 and 21 may include an application-specific integrated circuit (ASIC), another chipset, a logic circuit, and / or a data processing device.
- the memories 12 and 22 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media and / or other storage devices.
- the RF unit 13 and 23 may include a baseband circuit for processing a radio signal.
- the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function.
- the module may be stored in the memories 12 and 22 and executed by the controllers 11 and 21.
- the memories 12 and 22 may be inside or outside the controllers 11 and 21, and may be connected to the controllers 11 and 21 by various well-known means.
- first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.
- first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
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Abstract
Description
Claims (20)
- 다중 무선접속기술(Radio Access Technology:RAT)을 지원하는 무선 접속 시스템에서, 제 1 무선접속기술을 지원하는 제 1 기지국 및 제 2 무선접속기술을 지원하는 제 2 기지국과 데이터를 송수신할 수 있는 단말이 제 1 기지국의 페이징 메시지를 수신하는 방법에 있어서,상기 제 1 기지국과의 연결을 수립하는 단계;상기 제 1 기지국으로부터 페이징 메시지 전송 지시를 포함하는 제 2 기지국 연결 명령 메시지를 수신하는 단계;상기 제 2 기지국 연결 명령 메시지에 응답하여 상기 제 2 기지국과의 연결을 수립하는 단계; 및상기 페이징 메시지 전송 지시에 기초하여 상기 제 1 기지국의 페이징 메시지를 상기 제 1 기지국 또는 상기 제 2 기지국을 통해 모니터링하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 모니터링하는 단계는,상기 제 2 기지국으로부터 페이징 메시지 지시를 수신하는 단계; 및상기 제 1 기지국으로부터 페이징 메시지를 수신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 모니터링하는 단계는,상기 제 2 기지국으로부터 페이징 메시지를 수신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 모니터링하는 단계는,상기 제 2 기지국으로부터 상기 제 1 기지국과의 네트워크 리엔트리 지시를 수신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 4 항에 있어서,상기 네트워크 리엔트리 지시에 응답하여 상기 제 1 기지국과의 네트워크 리엔트리를 수행하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 모니터링하는 단계는,상기 제 2 기지국을 통해, 페이징 컨트롤러 또는 상기 제 1 기지국으로부터 페이징 메시지 또는 페이징 지시 메시지를 수신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 6 항에 있어서, 상기 모니터링하는 단계는,상기 페이징 컨트롤러의 IP 주소(address) 또는 상기 제 1 기지국의 IP 주소에 해당하는 메시지를 수신한 경우에, 상기 수신한 메시지를 페이징 메시지로 인식하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서,상기 제 2 기지국과의 연결이 유지되는 동안 상기 제 1 기지국에 대한 위치 업데이트(location update)는 수행되지 않는 것을 특징으로 하는 방법.
- 제 1 항에 있어서,상기 제 2 기지국과 데이터 통신을 수행하는 단계; 및상기 유휴 모드에서 상기 제 2 기지국과의 데이터 통신이 완료되면, 상기 제 1 기지국에 상기 제 1 기지국으로부터의 페이징 메시지 모니터링을 알리는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 9 항에 있어서, 상기 알리는 단계는,상기 제 1 기지국에 대한 위치 업데이트를 수행하는 단계인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 2 기지국 연결 명령 메시지는,AAI-SS-CMD인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 모니터링하는 단계 이전에,상기 제 1 기지국으로부터 유휴 모드(idle mode)의 진입과 관련된 메시지를 수신하는 단계; 및상기 유휴 모드의 진입과 관련된 메시지에 응답하여 상기 유휴 모드에 진입하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 모니터링하는 단계 이전에,상기 제 2 기지국과 데이터 통신을 수행하는 단계; 및상기 제 1 기지국과 등록 해제를 수행하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 1항에 있어서,상기 제 1 무선접속기술은 광대역 무선접속기술이며, 상기 제 2 무선접속기술은 근거리 무선접속기술인 것을 특징으로 하는 방법.
- 제 14항에 있어서,상기 광대역 무선접속기술은 802.16을 지원하는 무선접속기술이며, 상기 근거리 무선접속기술은 802.11을 지원하는 무선접속기술인 것을 특징으로 하는 방법.
- 다중 무선접속기술(Radio Access Technology:RAT)을 지원하는 무선 접속 시스템에서, 제 1 무선접속기술을 지원하는 제 1 기지국 및 제 2 무선접속기술을 지원하는 제 2 기지국과 데이터를 송수신할 수 있는 단말에 있어서,외부와 무선신호를 송수신하기 위한 무선통신부; 및상기 무선통신부와 연결되는 제어부를 포함하되, 상기 제어부는,상기 제 1 기지국과의 연결을 수립하고, 상기 제 1 기지국으로부터 페이징 메시지 전송 지시를 포함하는 제 2 기지국 연결 명령 메시지를 수신하도록 상기 무선 통신부를 제어하고, 상기 페이징 메시지 전송 지시에 기초하여 상기 제 1 기지국의 페이징 메시지를 상기 제 1 기지국 또는 상기 제 2 기지국을 통해 모니터링하는 것을 특징으로 하는 단말.
- 다중 무선접속기술(Radio Access Technology:RAT)을 지원하는 무선 접속 시스템에서, 제 1 무선접속기술을 지원하는 제 1 기지국 및 제 2 무선접속기술을 지원하는 제 2 기지국과 데이터를 송수신할 수 있는 단말이 제 1 기지국의 페이징 메시지를 수신하는 방법에 있어서,상기 제 1 기지국으로부터 페이징 메시지 전송 지시를 포함하는 유휴 모드(idle mode)의 진입과 관련된 메시지를 수신하는 단계;상기 유휴 모드의 진입과 관련된 메시지에 응답하여 상기 유휴 모드에 진입하는 단계; 및상기 페이징 메시지 모니터링 여부를 나타내는 지시에 기초하여 상기 제 1 기지국의 페이징 메시지를 상기 제 1 기지국 또는 상기 제 2 기지국을 통해 모니터링하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 17 항에 있어서, 상기 모니터링하는 단계는,상기 제 2 기지국으로부터 페이징 메시지 지시를 수신하는 단계; 및상기 제 1 기지국으로부터 페이징 메시지를 수신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 17 항에 있어서, 상기 모니터링하는 단계는,상기 제 2 기지국으로부터 페이징 메시지를 수신하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 17 항에 있어서, 상기 유휴 모드의 진입과 관련된 메시지는,AAI-DREG-RSP인 것을 특징으로 하는 방법.
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KR1020137029597A KR20140022409A (ko) | 2011-05-25 | 2012-05-25 | 다중 무선접속기술을 지원하는 무선 접속 시스템에서 페이징을 효율적으로 하기 위한 방법 및 장치 |
US14/117,325 US20140106793A1 (en) | 2011-05-25 | 2012-05-25 | Method and apparatus for efficiently performing paging in a wireless access system that supports a multi-radio access technology |
CN201280025119.3A CN103718628B (zh) | 2011-05-25 | 2012-05-25 | 用于在支持多无线电接入技术的无线接入系统中高效地执行寻呼的方法和设备 |
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US20140106793A1 (en) | 2014-04-17 |
WO2012161551A3 (ko) | 2013-01-24 |
CN103718628A (zh) | 2014-04-09 |
KR20140022409A (ko) | 2014-02-24 |
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