WO2008011808A1 - Procédé et réseau d'accès pour transfert de terminal d'accès en état actif - Google Patents

Procédé et réseau d'accès pour transfert de terminal d'accès en état actif Download PDF

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Publication number
WO2008011808A1
WO2008011808A1 PCT/CN2007/002182 CN2007002182W WO2008011808A1 WO 2008011808 A1 WO2008011808 A1 WO 2008011808A1 CN 2007002182 W CN2007002182 W CN 2007002182W WO 2008011808 A1 WO2008011808 A1 WO 2008011808A1
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WIPO (PCT)
Prior art keywords
access network
sector
access terminal
pilot strength
access
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PCT/CN2007/002182
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English (en)
Chinese (zh)
Inventor
Jun Chen
Rong Wan
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Huawei Technologies Co., Ltd.
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Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008011808A1 publication Critical patent/WO2008011808A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point

Definitions

  • the present invention relates to a method and an access network for an active mobile access terminal to switch between access networks or between sectors. Background technique
  • CDMA2000 is a new generation of cellular mobile communication systems, including CDMA2000 lx systems for voice services and CDMA2000 lx EV-DO systems for data services only.
  • the CDMA2000 mobile communication system provides voice or data services for the Access Terminal (AT) through a Base Station Controller (BSC) and its Base Transceiver System (BTS).
  • BSC Base Station Controller
  • BTS Base Transceiver System
  • AN Access Network
  • AN Access Network
  • the CDMA2000 system uses sector switching to ensure that the access terminal always gets the appropriate sector to serve it, so that no dropped calls or data service interruptions occur.
  • the target sector and the source sector of the handover belong to different access networks (or base station controllers), the handover is called access network handover.
  • the CDMA2000 lx system is mainly designed to support voice services, and has high requirements for real-time communication. Therefore, the system protocol defines a soft handover method between different access networks (or base station controllers), so that the handover results in The communication interruption duration is eliminated. If soft handoff is not possible, the system protocol also defines a method of hard handoff between different access networks (or base station controllers), so that the communication interruption time caused by the handover is controlled to a very short range.
  • the CDMA2000 lx EV-DO system (hereinafter referred to as EV-DO system) is mainly designed to support data services.
  • the real-time requirements for communication are not high, and the main focus is on the average data transmission rate. Therefore, in the CDMA2000 lx EV-DO protocol, only the method of switching between idle access terminals in different access networks is defined. The essence of this handover is: the target access network passes through the access network
  • the A13 interface obtains high-rate packet data (HRPD) session information from the source access network to implement session migration, thereby saving the establishment of a session and configuration negotiation with the access terminal on the target access network side. process.
  • HRPD high-rate packet data
  • the EV-DO system protocol does not define a method for soft-switching between active access terminals in different access networks.
  • the hard handover method is not defined in the EV-DO system protocol, so that the active access terminal cannot perform hard handover between different access networks.
  • the active state of the access terminal means that the access terminal establishes a wireless interface connection with the access network, and the access terminal can upload or download data through the wireless interface.
  • the idle state of the access terminal means that the wireless interface connection is not currently established between the access terminal and the access network, but the packet control function (PCF) of the access terminal and the packet data service node (Packet) There is a peer-to-peer protocol (PPP) connection between Data Serving Nodes, PDSNs.
  • PCF packet control function
  • Packet packet data service node
  • the triggering method for the idle access terminal to switch between different access networks is: when the idle state access terminal detects that the pilot strength of the sector in the new access network is higher than that of the current service When the strongest sector pilot strength of the access network is higher than a certain threshold, the UATIRequest message is reported through the access channel of the sector in the new access network, and the access network switching of the idle state access terminal is triggered.
  • the threshold described above is determined by the chip of the access terminal.
  • sectors A, B, and C of the access network 10 and sectors D and E of the access network 20 are respectively distributed along the direction of the X-axis of the coordinate axis. It is assumed that an access terminal 30 having an idle state is in a session state with the access network 10 and is moving from sectors A, B, C of the access network 10 to sectors D, E of the access network 20. The access terminal 30 continuously detects the pilot strength of each access sector during the move (step 100).
  • the access terminal 30 determines whether the difference between the pilot strength of the sector of the other access network (including the access network 20) and the pilot strength of the sector of the current access network 10 exceeds the handover determined by the access terminal chip. Difference threshold (step 110).
  • the access terminal 30 When the access terminal 30 reaches the geographic location 1, the difference between the pilot strength of the sector D of the access network 20 and the pilot strength of the strongest sector C of the current access network 10 exceeds the handover difference determined by the access terminal chip. The value threshold, therefore, the access terminal 30 reports the UATIRequest message to the access network 20 via the access channel of the sector D in the access network 20 (step 120).
  • the access network 20 obtains high-rate packet data (HRPD) session information from the access network 10 through the A13 interface between the access networks, and establishes with the access terminal 30.
  • HRPD packet data
  • the access terminal When the access terminal is in an idle state, if the access terminal has data to upload, or the packet data service node has data to be transmitted to the access terminal, a wireless interface connection is established between the access terminal and the access network to complete the data. Transmission, the access terminal goes from idle to active.
  • connection release may be initiated by the access terminal, the access network or the packet data serving node, and the access terminal transits from the active state to the idle state.
  • the EV-DO system protocol does not define a method in which an active access terminal performs soft handover or hard handover between different access networks.
  • An existing technical solution for implementing soft handover between access terminals in different access networks is to implement an active access terminal to perform soft connection between different access networks through a customized access network interface message.
  • Switch is a non-standard interface message and cannot be coordinated between access networks of different vendors, so that the scope of use of this solution is limited.
  • Another prior art solution is: an access network switching method based on connection release initiated by an access terminal.
  • this scheme when an access terminal moves from a sector of the current access network to a sector of another access network, the pilot signal strength obtained from the current access network sector becomes weaker and weaker until it The data from the current access network sector cannot be received correctly. At this time, the access terminal will actively release the wireless connection, from the active state to the idle state.
  • the access terminal When the access terminal is in the idle state, it continuously detects the pilot signals transmitted from the surrounding sectors. in case When the access terminal detects that the pilot strength of the sector in the new access network is higher than the sector pilot strength of the current access network, the access terminal initiates an idle inter-network handover. Switch to the sector of the new access network.
  • the initiator of the task the access terminal or the packet data serving node initiates the connection establishment again through the sector of the new access network.
  • the access terminal changes from the idle state to the active state, thereby finally completing the process of the active access terminal switching between different access networks.
  • the sectors, B, C of the access network 10 and the sectors D, E of the access network 20 are distributed along the X-axis of the coordinate axis. It is assumed that an active access terminal 30 is in a data communication state with a packet data serving node (not shown) through the access network 10 and is moving from the sectors A, B, C of the access network 10 to the access network 20 The sectors D, E move.
  • the access terminal 30 continuously detects the pilot strength of each sector during the move (step 200) and determines whether the data can be correctly received (step 210).
  • the pilot strength of the sectors D and E of the access network 20 gradually increases with the movement of the access terminal 30, and the pilot strengths of the sectors A, B, and C of the current access network 10 gradually increase. Weakened.
  • the access terminal 30 when the access terminal 30 reaches the geographic location 2, the pilot strength of the sector D of the access network 20 exceeds the threshold Pilot_Add, and the access terminal 30 notifies the access network 10 by using a route update message (RouteUpdate message).
  • Sector D of access network 20 is added to the active set.
  • the access network 10 cannot add the sector D of the access network 20 to the active set.
  • the access terminal 30 continues to report the routing update message, attempting Sector D of access network 20 is added to the active set.
  • the access terminal 30 when the access terminal 30 reaches the geographic location 3, the sector D with the strongest pilot strength in the access network 20 is stronger than the sector C with the strongest pilot strength in the access network 10, and the strongest pilot strength. The difference between the two exceeds the handover difference threshold determined by the access terminal chip. However, since the active state access terminal is not defined In the inter-network soft handover, the active access terminal 30 cannot switch from the access network 10 to the access network 20.
  • the access terminal 30 When the access terminal 30 reaches the geographic location 4, the pilot strength of the sector C with the strongest pilot strength of the access network 10 is already lower than the pilot join threshold Pilot_Add, and although the connection rate may be decreased, it may still be received. The communication data, therefore, the active access terminal 10 is still communicating with the access network 10 with weak pilot strength, rather than the access network 20 with strong pilot strength.
  • the access terminal 30 Until the access terminal 30 reaches the geographic location 5, the access terminal 30 cannot correctly accept the communication data, thereby actively releasing the wireless connection from the active state to the idle state (step 220).
  • the sector C The difference between the pilot strengths is already greater than the handover difference threshold determined by the access terminal chip, so the idle state access terminal 30 will complete the access inter-network handover (step 230).
  • the initiator of the task, the access terminal 30 or the packet data serving node initiates the connection establishment connection through the sector of the new access network 20, thereby
  • the access terminal 30 transitions from the idle state to the active state (step 240), and finally completes the process of the active state access terminal 30 switching between different access networks.
  • the access terminal continues to reside on the current access network at a lower data transmission rate. In this case, the user's data throughput Obviously it was depressed.
  • this method affects sector throughput. For sectors at different access network boundaries, the throughput of users across the boundary of the access network is depressed, and the data throughput of the sector is clearly degraded. If the user's distribution is more concentrated on the access network boundary, the extent to which the sector throughput is depressed will be greater.
  • this method will affect the timeliness of the handover.
  • There may be an imbalance in the front-end of the wireless link so that when the quality of the forward-facing wireless link deteriorates to cause the access terminal to initiate the release of the wireless interface connection, the quality of the reverse wireless link may be deteriorated, resulting in The incoming network cannot correctly receive the message reported by the access terminal.
  • the release of the wireless interface connection is initiated by the access network only after the release-to-idle state timer set by the access network side expires.
  • this phenomenon may cause further delays in inter-network handover and further impact on single-user throughput and sector throughput. .
  • CDMA2000 lx and CDMA2000 lx EV-DO dual-mode access terminals can switch between CDMA2000 lx and CDMA2000 lx EV-DO systems when performing data services, that is, switching from the access network of CDMA2000 lx system.
  • an object of the embodiments of the present invention is to provide a method for switching an active access terminal between access networks and an access network, so as to implement an active access terminal to switch between different access networks, After the switch is completed, the connection can still exist, and the data transfer task being executed can still continue, and the impact of the switch on the data transmission performance is reduced as much as possible.
  • the technical solution of the embodiment of the present invention may be applicable to the access terminal switching between different access networks of the CDMA lx EV-DO system, or switching from the access network of the CDMA2000 lx system to the access of the CDMA lx EV-DO system.
  • Another object of the embodiments of the present invention is to provide a method for switching an active access terminal between sectors that missed a neighbor relationship and an access network, and avoiding the mismatch of adjacent sectors for timeliness of handover. influences.
  • the technical solution can be applied to an access network using a CDMA2000 lx EV-DO system or an access network using a CDMA2000 lx system, and an access terminal performing data services switches between sectors in which no adjacent relationship is configured.
  • a method for switching an active access terminal between access networks mainly includes the following steps:
  • the current access network receives the message sent by the access terminal, and compares the sector with the strongest pilot strength in the current access network and the sector with the strongest pilot strength in the adjacent access network according to the information carried in the message. Pilot strength; when the strongest pilot strength in the neighboring access network is higher than the strongest pilot strength of the current access network by a predetermined threshold, the current access network sends a message to the access terminal, releasing the radio interface connection.
  • the access terminal is migrated to an idle state, so that the idle state access terminal switches to the sector with the strongest pilot strength in the adjacent access network.
  • a receiving module configured to receive a message sent by the access terminal and output the message
  • a first determining module configured to compare pilot strength between a sector with strongest pilot strength in the access network and a sector with strongest pilot strength in a neighboring access network according to information carried by the message And output the comparison result;
  • a first processing module configured to send a message to the access terminal when the comparison result is that the strongest pilot strength in the neighboring access network is higher than the strongest pilot strength of the access network by a predetermined threshold , release the wireless interface connection, and make the access terminal migrate to the idle state.
  • a similar technical solution of the technical solution for switching the active access terminal between the access networks may be applicable to switching the active access terminal between the sectors that are missing the adjacent relationship, so that timely switching can be avoided. Due to the influence of the missed pairing switching of adjacent sectors.
  • a method for switching an active state access terminal between sectors that miss a neighbor relationship includes the following steps:
  • the current access network receives the message sent by the access terminal, and compares the pilot strength between the neighboring sector with the strongest pilot strength and the current serving sector; the pilot strength in the adjacent sector is greater than the current pilot strength When the pilot strength of the strongest serving sector is higher than a predetermined threshold, and the neighboring sector is the sector of the current serving sector that misses the adjacent relationship, the message is sent to the access terminal, and the wireless interface connection is released.
  • the access terminal is migrated to an idle state to cause the idle state access terminal to switch to the neighboring sector.
  • a receiving module configured to receive a message sent by the access terminal and output the message
  • a second determining module configured to compare pilot strength between a neighboring sector and a current serving sector with the strongest pilot strength according to the information carried by the message, and output a comparison result
  • a second processing module configured to: when the comparison result is that a pilot strength of a neighboring sector is higher than a pilot strength of a serving sector with a strongest pilot strength, and the neighboring sector is current When the serving sector misses the sector of the adjacent relationship, the message is sent to the access terminal, and the wireless interface connection is released, so that the access terminal migrates to the idle state.
  • the access network selects an appropriate timing to actively release the wireless interface connection, so as to implement the switching between the access networks, thereby ensuring that the connection can still exist after the handover is completed, and the data transmission task is being executed. Under the condition that it can continue, the impact of switching on data transmission performance indicators such as single-user throughput and sector throughput can be reduced as much as possible.
  • 1 is a diagram showing an example of switching an idle state access terminal between access networks according to the definition of the CDMA2000 lx EV-DO protocol;
  • FIG. 2 is a flow chart showing the process of implementing an access network switching between an idle state access terminal in the example of FIG. Figure
  • FIG. 3 is a schematic diagram showing an example of switching an active access terminal between access networks according to a prior art method
  • FIG. 4 is a flow chart showing a process of implementing an access network switching between an active state access terminal in the example of FIG. 3;
  • FIG. 5 is a schematic diagram illustrating an example of switching an active access terminal between access networks according to an embodiment of the present invention
  • FIG. 6 is a flow chart showing a process of implementing an access network switching between an active state access terminal in the example of FIG. 5;
  • FIG. 7 is a block diagram of an access network in an embodiment of the present invention.
  • FIG. 8 is a block diagram of another access network in the embodiment of the present invention. detailed description
  • the embodiment of the present invention does not wait for the access signal obtained by the access terminal in the current access network sector to become weaker and weaker until it cannot correctly receive the data transmitted by the current access network sector.
  • the access network selects an appropriate timing to actively release the wireless interface connection to implement the switching between the access networks.
  • the pilot strength of the new access network sector is gradually increased, and the current access network fan is gradually added.
  • the pilot strength of the zone will gradually weaken, and the pilot strength of the target access network sector will exceed the pilot strength of the current access network sector from a certain geographical area.
  • the pilot strength difference between the new access network sector and the current access network sector may exceed a set threshold. , actively releasing the wireless interface connection, so that the call is timely migrated to the target access network through the idle state switching between the access networks.
  • Fig. 5 shows a specific embodiment of the method for switching an active access terminal between access networks according to the present invention.
  • the flowchart of Fig. 6 is specifically described as follows.
  • the access network 10 is respectively distributed along the direction of the X-axis of the coordinate axis. Sectors A, B, C and sectors D, E of access network 20. It is assumed that an active access terminal 30 is transmitting data through the access network 10 with a data packet serving node (not shown) and from the sectors A, B, C of the access network 10 to the access network 20. Sectors D, E move. During the mobile process, the access terminal 30 continuously detects the pilot strength of each access sector and reports the detection result to the access network 10 through a route update message (step 300).
  • the pilot strengths of the sectors D and E of the access network 20 gradually increase with the movement of the access terminal 30, and the pilot strengths of the sectors A, B, and C of the access network 10 gradually decrease. .
  • the access terminal 30 when the access terminal 30 reaches the geographic location 2, the pilot strength of the sector D of the access network 20 exceeds the threshold Pilot_Add, and the access terminal 30 notifies the access network 10 of the access network by a routing update message.
  • Sector D of 20 is added to the active set.
  • the access network 10 cannot add the sector D of the access network 20 to the active set.
  • the access terminal 30 continues to report the routing update message, attempting Sector D of access network 20 is added to the active set.
  • the access network 10 determines whether the pilot strength of the sector with the highest pilot strength of the other access network is higher than a sector with the highest pilot strength by a set threshold (step 310).
  • the access network 10 detects the situation in the routing update message continuously reported by the access terminal 30, and then sends a connection close message to the access terminal 30, releasing the wireless interface connection, and causing the access terminal 30 to migrate to the idle state (step 320). ).
  • the access terminal 30 since the access terminal 30 is in an idle state, and the pilot strength of the sector D of the access network 20 is the strongest with the pilot strength of the access network 10, the pilot strength of the sector C is strongest.
  • the difference is already greater than the handover difference threshold determined by the access terminal chip, so the access terminal 30 will complete the idle state handover (step 330).
  • the access terminal 30 or the packet data serving node is the same as the case where the access terminal initiated by the access terminal described above with reference to FIG. 3 and FIG. 4 releases the active state access inter-network handover. It is shown that the connection establishment process is initiated actively, so that the access terminal returns to the active state (step 340). Thus, the active state access terminal 30 switches from the access network 10 to the access network 20.
  • Threshold Dormant_ Threshold value in the embodiment of the present invention has an important impact on system performance, and the specific requirements are as follows:
  • the threshold Dormant_ Threshold value equal to or greater than the pilot strength difference threshold that triggers the idle state access network switching determined by the internal chip of the access terminal (eg, mobile phone), so that the access terminal migrates to After the idle state, the idle mode access network switching is triggered, and the connection establishment is not initiated on the current access network.
  • setting the threshold Dormant_Threshold can also be adjusted according to the slow fading and fast fading of the pilot signals at the interface of each access network.
  • the slow fading of the pilot signal reflects the effect of the distance from the base station on the pilot strength, reflecting the effect of the distance from the base station on the data transmission rate.
  • the fast fading of the pilot signal reflects the extent to which the pilot strength fluctuates, reflecting whether it is likely to cause a ping-pong switch.
  • each access network includes multiple sectors, so the system will include multiple access network interfaces, and each access network interface includes multiple sector boundaries.
  • the slow fading and fast fading conditions of the pilot signals at the intersection of the various sectors are different, and therefore, different switching thresholds Dormant_Threshold can be set at different sector boundaries at different access network interfaces.
  • the technical solution of the embodiment of the present invention can effectively avoid the problems that may occur in the prior art, that is, when there is a sector with better pilot strength in the adjacent access network, the access terminal still stays at the current pilot. In the less powerful sectors, the data transmission rate is kept low, so that the system performance is not fully utilized.
  • the embodiment of the present invention passes The technical solution that the network device initiates the connection release to implement the handover is also applicable to the switching between the active mode dual mode access terminal performing the data service between the access networks of the CDMA2000 lx and the CDMA2000 lx EV-DO system, and is also applicable to the use of CDMA2000.
  • the active access terminal performing the data service performs the inter-sector handover in time when the adjacent relationship is missed.
  • the CDMA2000 lx access network sends a connection. Close the message to the dual mode phone to release the wireless interface. The dual-mode handset can then be switched to the CDMA2000 lx access network.
  • the mobile phone works in the CDMA2000 lx mode
  • the dual-mode mobile phone can simultaneously monitor and monitor the pilot signal strength of the CDMA2000 Ix EV-DO system
  • the technical solution of the embodiment of the present invention can also be utilized.
  • the dual-mode mobile phone will report each sector (including CDMA2000 lx EV- by reporting the pilot strength measurement message (corresponding to the routing update message of the CDMA2000 Ix EV-DO mode).
  • the pilot strength of the sector of the DO access network and the sector of the CDMA2000 lx access network is reported to the CDMA2000 lx access network.
  • the CDMA2000 lx access network sends a call. Release the message (corresponding to the connection close message in CDMA2000 Ix EV-DO mode) to the dual mode handset to release the wireless interface. Then the dual-mode phone can switch to CDMA2000 lx EV-DO Access Network.
  • the handover in an access network using a CDMA2000 lx EV-DO system or an access network using a CDMA2000 lx system, when an active mobile phone (access terminal) performing a data service performs handover between sectors, the handover generally needs to be Inter-sectoralization is performed with neighbor relationships (adjacent relationships are important network planning and optimization parameters). In the case of missing the adjacent relationship, the timeliness of the handover is affected. According to the method of the embodiment of the present invention, even if the neighbor relationship is missed, the mobile phone can report the signal strength of the pilot of the sector not allocated to the neighboring cell to the access network by monitoring the remaining pilot set.
  • the access network The network device can initiate the connection release actively, and the mobile phone can be switched to the idle state, so that the data can be switched to the better covered sector to continue the data service.
  • the handover threshold must also be greater than or equal to the access terminal idle state handover threshold. Moreover, since the slow fading and fast fading of the pilot signals at the boundary of each sector of the access network are different, different switching thresholds can be set for different sector boundaries in the access network.
  • An access network in the embodiment of the present invention, as shown in FIG. 7, includes:
  • a receiving module configured to receive a message sent by the access terminal and output the message
  • a first determining module configured to compare, according to information carried in the message, a pilot strength between a sector with the strongest pilot strength in the access network and a sector with the strongest pilot strength in the adjacent access network, and output Comparing result;
  • the first processing module is configured to send a message to the access when the comparison result is that the strongest pilot strength in the neighboring access network is higher than the strongest pilot strength of the access network by a predetermined threshold.
  • the access network may be an access network using a CDMA2000 lx EV-DO system or an access network using a CDMA2000 lx system.
  • Another access network in the embodiment of the present invention, as shown in FIG. 8, includes:
  • a receiving module configured to receive a message sent by the access terminal and output the message
  • a second determining module configured to compare, according to the information carried by the message, a pilot strength between a neighboring sector with the strongest pilot strength and a current serving sector, and output a comparison result;
  • a second processing module configured to: when the comparison result is that a pilot strength of a neighboring sector is higher than a pilot strength of a serving sector with a strongest pilot strength, and the neighboring sector is currently serving When a sector of a sector is missing a sector of a neighbor relationship, a message is sent to the access terminal, and the wireless interface connection is released, so that the access terminal migrates to an idle state.
  • the access network may be an access network using a CDMA2000 lx EV-DO system or an access network using a CDMA2000 lx system.
  • the access network selects an appropriate timing to actively release the wireless interface connection, thereby implementing switching between access networks, thereby ensuring that the connection can still exist after the handover is completed.
  • the impact of switching on data transmission performance indicators such as single-user throughput and sector throughput can be reduced as much as possible.

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Abstract

L'invention concerne un procédé et un réseau d'accès permettant le transfert d'un terminal d'accès en état actif, ce procédé de transfert de terminal d'accès en état actif parmi les réseaux d'accès comprend les étapes suivantes : le réseau d'accès courant reçoit le message envoyé par le terminal d'accès et compare la force pilote du secteur pour sélectionner la force pilote la plus élevée dans le réseau d'accès courant et le secteur qui possède la force pilote la plus élevé dans le réseau d'accès voisin, conformément aux informations du message, lorsque la force pilote la plus élevé dans le réseau d'accès voisin est supérieure à la force pilote la plus élevée dans le réseau d'accès courant pour un seuil prédéterminé, le réseau d'accès courant envoie un message au terminal d'accès afin de libérer la connexion d'interface sans fil de façon à faire passer le terminal d'accès en état de veille et le commuter vers le secteur qui possède la force pilote la plus élevée dans le réseau d'accès voisin à partir de cet état de veille. La solution technique peut réduire l'influence sur la performance de l'émission due à ce transfert. On peut également concevoir une méthode similaire pour le transfert d'un terminal d'accès à l'état actif dans des secteurs voisins manqués correspondant au secteur en service.
PCT/CN2007/002182 2006-07-19 2007-07-17 Procédé et réseau d'accès pour transfert de terminal d'accès en état actif WO2008011808A1 (fr)

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CN101242645B (zh) * 2007-02-09 2011-02-09 华为技术有限公司 移动终端从空闲态进入激活态的方法及***
CN101453725B (zh) * 2007-11-28 2010-07-14 中兴通讯股份有限公司 移动通信***中自动配置邻区的方法
JP5150601B2 (ja) * 2009-10-20 2013-02-20 株式会社エヌ・ティ・ティ・ドコモ 移動通信端末、移動通信制御装置、移動通信システム及び移動通信方法
CN101720100B (zh) * 2009-12-04 2012-07-04 中兴通讯股份有限公司 检测邻区漏配并进行邻区配置的装置、方法及***
CN101778447B (zh) * 2010-01-28 2012-07-04 华为技术有限公司 接入终端的准入控制方法和装置
CN102843737B (zh) * 2011-06-24 2015-08-19 中国电信股份有限公司 CDMA2000 1x网络中的空闲切换方法和终端
CN108270475B (zh) * 2016-12-30 2020-10-23 华为技术有限公司 一种波束训练方法及通信设备
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