WO2012159347A1 - Procédé de commutation, et système de communication et appareil associés - Google Patents

Procédé de commutation, et système de communication et appareil associés Download PDF

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Publication number
WO2012159347A1
WO2012159347A1 PCT/CN2011/077673 CN2011077673W WO2012159347A1 WO 2012159347 A1 WO2012159347 A1 WO 2012159347A1 CN 2011077673 W CN2011077673 W CN 2011077673W WO 2012159347 A1 WO2012159347 A1 WO 2012159347A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
base station
terminal
coverage
message
Prior art date
Application number
PCT/CN2011/077673
Other languages
English (en)
Chinese (zh)
Inventor
谢波
扈曙辉
熊立群
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180001176.3A priority Critical patent/CN103026759B/zh
Priority to PCT/CN2011/077673 priority patent/WO2012159347A1/fr
Publication of WO2012159347A1 publication Critical patent/WO2012159347A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link

Definitions

  • the embodiments of the present invention relate to the field of mobile communications technologies, and in particular, to a handover method, related device, and communication system.
  • the terminal (AT, Access Terminal) is in an idle state and a boundary move occurs between the access networks (AN, Access Network), an idle session transition occurs. At this time, the terminal may cause idle state ping-pong switching due to frequent changes of the signal.
  • one prior art is to configure a boundary area between a source base station and a target base station as a second color code area.
  • the terminal When the terminal is in the second color code area, it does not initiate a session migration request. Session migration occurs only after the terminal moves to a location that is covered by the target base station but is not covered by the second color code area.
  • the above prior art has at least the following drawbacks: since the terminal does not initiate a session migration request in the second color code region, when the terminal moves from the coverage range of the source base station to the range covered by the second color code region and the target base station, Session migration does not occur. It must wait until the terminal initiates a call to initiate a session migration, which will result in a certain call access delay.
  • the embodiments of the present invention provide a handover method, a related device, and a communication system, which can prevent idle ping-pong handover without generating a call access delay.
  • the second base station sends a message to the terminal that is switched from the first base station to the first carrier of the second base station, indicating that the terminal camps on the second carrier of the second base station, where the coverage of the second carrier is greater than the coverage of the first carrier ;
  • the second base station switches the terminal from the first carrier to the second carrier of the second base station.
  • the terminal switches from the first base station to the first carrier of the second base station;
  • the terminal receives the first message sent by the second base station, where the first message is used to indicate that the terminal camps on the second carrier of the second base station, and the coverage of the second carrier is greater than the coverage of the first carrier;
  • the terminal switches from the first carrier to the second carrier of the second base station.
  • a sending unit configured to send a message to a terminal that is switched from the first base station to the first carrier of the base station, to indicate that the terminal camps on the second carrier of the base station, and the coverage of the second carrier is greater than the coverage of the first carrier ;
  • a switching unit configured to switch the terminal from the first carrier to the second carrier of the base station.
  • a first switching unit configured to switch from a first base station to a first carrier of the second base station
  • a receiving unit configured to receive a first message sent by the second base station, where the first message is used to indicate that the terminal camps on the second carrier of the second base station, and the coverage of the second carrier is greater than the coverage of the first carrier; And a unit, configured to switch from the first carrier to the second carrier of the second base station.
  • the second base station includes: a second base station sending unit, configured to send, to the terminal that is the first carrier that is switched from the first base station to the second base station, a first message, indicating that the terminal camps on the second carrier of the second base station, and second The coverage of the carrier is greater than the coverage of the first carrier; the second base station switching unit is configured to switch the terminal from the first carrier to the second carrier of the second base station;
  • the terminal includes: a first switching unit, configured to switch from the first base station to the first carrier of the second base station; a first receiving unit, configured to receive a first message sent by the second base station, where the first message is used to indicate that the terminal resides And the second carrier of the second base station, the coverage of the second carrier is greater than the coverage of the first carrier, and the second switching unit is configured to switch from the first carrier to the second carrier of the second base station.
  • the embodiments of the present invention have the following advantages:
  • the second base station after the terminal belonging to the first base station switches to the first carrier of the second base station, the second base station sends a message to the terminal, indicating that the coverage of the terminal to the second base station is greater than that of the first carrier.
  • the second carrier the second base station switches the terminal from the first carrier to the second carrier of the second base station.
  • the second carrier After the terminal is switched from the first base station to the second base station, the second carrier that is larger in the second base station is camped on, so that the terminal can stably reside in the second base station when moving across the AN boundary.
  • the terminal does not cause idle state ping-pong handover, and since the terminal is always subordinate to the switched second base station after being switched from the first base station, the terminal can initiate a call at any time, thereby reducing call access. Delay.
  • FIG. 1 is a schematic diagram of a method for handover according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of another method for handover according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a carrier configuration on a base station of a communication system according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a terminal handover in a communication system according to an embodiment of the present invention.
  • the embodiments of the present invention provide a handover method, a related device, and a communication system, which can prevent idle ping-pong handover without generating a call access delay.
  • a method for switching according to an embodiment of the present invention includes:
  • the second base station sends a message to the terminal that is switched from the first base station to the first carrier of the second base station, and indicates that the terminal camps on the second carrier of the second base station.
  • the second base station after the terminal switches from the first base station to the first carrier of the second base station, the second base station sends a message to the terminal, indicating that the terminal camps on the second carrier, where the coverage of the second carrier The range is greater than the coverage of the first carrier.
  • the carrier that is dependent on the first base station includes a third carrier
  • the carrier that is dependent on the second base station includes a first carrier and a second carrier, where the frequency of the first carrier and the third carrier are the same, and the first base station and the second base station are Two adjacent base stations.
  • the terminal When the terminal moves from the coverage of the third carrier of the first base station to the coverage of the second base station, the terminal performs handover at the boundary between the first base station and the second base station, because the frequency of the third carrier before the terminal is switched, and the second The frequency of the first carrier of the base station is the same, so after the terminal switches from the first base station to the second base station, the terminal preferentially selects the first carrier attached to the second base station.
  • the second base station sends a message to the terminal, indicating that the terminal camps on the second carrier with a larger coverage.
  • the second base station switches the terminal from the first carrier to the second carrier of the second base station.
  • the second base station when the second base station sends a message to the terminal, indicating that the terminal camps on the second carrier, the second base station switches the terminal from the first carrier to the second carrier of the second base station, where the second carrier The coverage is greater than the coverage of the first carrier.
  • the second base station will configure the carrier
  • the coverage of the first carrier and the second carrier that are subordinate to the second base station are set to be different, that is, the coverage ranges of the first carrier and the second carrier are different, for example, when configuring the carrier of the second base station,
  • the coverage of the second carrier is configured as (N + N.) db
  • the coverage of the first carrier is (N - N 0 ) db.
  • the camping mode of the carrier on the second base station may be set to the carrier with the largest coverage. For example, if the terminal in the coverage of the second base station camps on the carrier with the largest coverage on the second base station, the terminal can be stably resident. If the terminal camps on the second base station, the coverage is not the largest.
  • the second base station may designate the terminal to perform handover, that is, switch from a carrier with a small coverage on the second base station to a carrier with the largest coverage on the second base station to achieve stable camping.
  • the coverage of the first carrier on the second base station is smaller than the coverage of the second carrier on the second base station.
  • the second base station switches the terminal from the first carrier to the coverage area. On the second carrier.
  • the method further includes that the carrier that is dependent on the first base station further includes a fourth carrier, where the frequency of the fourth carrier on the first base station and the second carrier on the second base station are the same.
  • the coverage of the fourth carrier is smaller than the coverage of the third carrier on the first base station.
  • the first base station and the second base station adjacent to the first base station may adopt an opposite configuration strategy when configuring the carrier, and the second base station-subordinate carrier has a first carrier and a second carrier, and the first base station is dependent on the first base station.
  • the carrier has a third carrier and a fourth carrier, where the frequency of the first carrier and the third carrier are the same as FA, and the frequency of the second carrier and the fourth carrier are the same as FB, then the carrier is configured for the second base station.
  • the coverage of the second carrier is greater than the coverage of the first carrier, and the coverage of the fourth carrier is smaller than the coverage of the third carrier when the carrier is configured for the first base station.
  • the method further includes: in order to make the carrier coverage of the second carrier larger than the coverage of the first carrier, the transmit power of the first carrier or the second carrier may be controlled.
  • the second base station may control the transmit power of the second carrier to be greater than the transmit power of the first carrier by controlling the transmit power of the second carrier; or the second base station may cause the first carrier by controlling the transmit power of the first carrier.
  • the transmit power is less than the transmit power of the second carrier.
  • the first The transmit power of the three carriers is greater than the transmit power of the fourth carrier.
  • the coverage of each carrier in the same carrier may be different for the multiple carriers on the base station, and the coverage of each carrier configured on the base station in the prior art is the same.
  • the coverage manner of the third carrier is the same as the coverage of the second carrier
  • the coverage of the fourth carrier is the same as the coverage of the first carrier.
  • the coverage of the third carrier of the first base station may be configured as Nldb
  • the coverage of the fourth carrier of the first base station may be configured as N2db
  • the coverage of the second carrier of the second base station may be configured as Nldb
  • the coverage of the first carrier of the second base station is configured as N2db, and N1>N2. It should be noted that, in the embodiment of the present invention, the coverage of carriers under the same base station with different frequency points is different, but the configuration of the coverage of carriers under each base station having the same frequency point in the prior art is the same.
  • the second base station after the terminal of the first base station switches to the first carrier of the second base station, the second base station sends a message to the terminal, indicating that the coverage of the terminal to the second base station is greater than that of the first carrier.
  • the second carrier the second base station switches the terminal from the first carrier to the second carrier of the second base station.
  • the second carrier that covers the second base station is camped on, so that the terminal can stably reside in the second base station when moving across the AN boundary.
  • the terminal does not cause idle state ping-pong handover.
  • the terminal since the terminal belongs to the second base station after handover after being switched from the first base station, the terminal can initiate a call at any time, thereby reducing the call access delay.
  • the foregoing embodiment describes a method for performing handover on the base station side according to the embodiment of the present invention.
  • the method for performing handover on the terminal side according to the embodiment of the present invention is introduced. As shown in FIG. 2, the method includes:
  • the terminal switches from the first base station to the first carrier of the second base station.
  • the terminal when the terminal moves from the coverage of the first base station to the coverage of the second base station, the terminal switches from the first base station to the first carrier of the second base station.
  • the carrier that is dependent on the first base station includes a third carrier
  • the carrier that is dependent on the second base station includes a first carrier and a second carrier, where the frequency of the first carrier and the third carrier are the same, and the first base station and the second base station are Two adjacent base stations.
  • the terminal at the third carrier coverage of the first base station switches at the boundary between the first base station and the second base station, because the terminal is located before the terminal handover
  • the frequency of the three carriers is the same as the frequency of the first carrier of the second base station. Therefore, after the terminal switches from the first base station to the second base station, the terminal preferentially selects the first carrier attached to the second base station. 202.
  • the terminal receives the first message sent by the second base station, where the first message is used to indicate that the terminal camps on the second carrier of the second base station, and the coverage of the second carrier is greater than the coverage of the first carrier.
  • the terminal after the terminal is switched from the first base station to the first carrier of the second base station, the terminal receives the first message sent by the second base station, where the first message is used to indicate that the terminal resides in the second The second carrier of the base station.
  • the second base station indicates that the terminal camps on the second carrier whose coverage is larger than the first carrier, and enables the terminal to stably reside.
  • the terminal switches from the first carrier to the second carrier of the second base station.
  • the terminal switches from the first carrier to the second carrier of the second base station, and second.
  • the coverage of the carrier is greater than the coverage of the first carrier.
  • the second base station may set the coverage of the first carrier and the second carrier that belong to the second base station to be different when the carrier is configured, that is, the coverage ranges of the first carrier and the second carrier are different. .
  • the camping mode of the terminal on the carrier may be set to be the carrier with the largest coverage area on the base station side. It is assumed that the carrier that belongs to the second base station includes the first carrier and the second carrier, the coverage of the first carrier is smaller than the coverage of the second base station, and the coverage of the second base station is that the second base station has the largest coverage on the second base station.
  • the terminal After the terminal is switched from the third carrier of the first base station to the first carrier of the second base station, since the coverage of the first carrier on the second base station is smaller than the coverage of the second base station, the terminal needs to be from the second base station.
  • the first carrier is switched to the second carrier of the second base station. Therefore, when the terminal moves across the AN boundary, it can stably reside on the second carrier of the second base station, and does not cause the terminal to perform idle state ping-pong switching.
  • the coverage of the first carrier on the second base station is smaller than the coverage of the first carrier on the second base station, and the second base station switches the terminal from the first carrier to the coverage area.
  • the coverage of a carrier on the second carrier is smaller than the coverage of the first carrier on the second base station.
  • the method further includes that the carrier that is dependent on the first base station further includes a fourth carrier, where the frequency of the fourth carrier on the first base station and the second carrier on the second base station are the same.
  • the coverage of the fourth carrier is smaller than the coverage of the third carrier on the first base station.
  • the carrier has a third carrier and a fourth carrier, where the frequency of the first carrier and the third carrier are the same as FA, and the second carrier If the frequency of the fourth carrier is the same as the FB, the carrier coverage of the second carrier is greater than the coverage of the first carrier when the carrier is configured for the second base station, and the fourth carrier is configured when the carrier is configured for the first base station. The coverage is smaller than the coverage of the third carrier.
  • the method further includes: in order to make the carrier coverage of the second carrier larger than the coverage of the first carrier, the second base station may control the transmit power of the first carrier or the second carrier, so that The transmit power of the second carrier is greater than the transmit power of the first carrier; in order to make the coverage of the fourth carrier smaller than the coverage of the third carrier, the first base station may control the transmit power of the third carrier or the fourth carrier, so that the third carrier The transmit power is greater than the transmit power of the fourth carrier.
  • the coverage of each carrier in the same carrier may be different for the multiple carriers on the base station, and the coverage of each carrier configured on the base station in the prior art is the same. .
  • the method further includes: the terminal switching from the second carrier of the second base station to the fourth carrier of the first base station; the terminal receiving the second message sent by the first base station, where the second message is used to indicate that the terminal resides a third carrier to the first base station; the terminal switches from the fourth carrier to the third carrier of the first base station.
  • the terminal after the terminal belonging to the first base station switches to the first carrier of the second base station, after receiving the first message of the second base station, the terminal switches from the first carrier to the instruction according to the first message.
  • the second base station covers a second carrier that is larger than the first carrier.
  • the second carrier that is larger in the second base station is camped on, so that the terminal can stably reside in the second base station when moving across the AN boundary.
  • the terminal does not cause idle state ping-pong handover, and since the terminal is always subordinate to the switched second base station after being switched from the first base station, the terminal can initiate a call at any time, thereby reducing the call access delay.
  • the foregoing embodiment describes the method for performing handover based on the base station side and the terminal side in the embodiment of the present invention.
  • the base station and the terminal and the communication system using the foregoing methods respectively provided by the embodiments of the present invention are introduced.
  • a base station 300 includes:
  • the sending unit 301 is configured to send a message to the terminal that is switched from the first base station to the first carrier of the base station 300, to indicate that the terminal camps on the second carrier of the base station 300, where the coverage of the second carrier is greater than the first carrier. Coverage
  • the switching unit 302 is configured to switch the terminal from the first carrier to the second carrier of the base station 300, where the coverage of the second carrier is greater than the coverage of the first carrier.
  • the carrier that is dependent on the first base station includes a third carrier
  • the carrier that is dependent on the base station 300 includes a first carrier and a second carrier, where the frequency of the first carrier and the third carrier are the same
  • the first The base station and the base station 300 are two adjacent base stations.
  • the terminal since the frequency of the third carrier before the terminal handover is the same as the frequency of the first carrier of the base station 300, after the terminal switches from the first base station to the base station 300, the terminal preferentially selects the first carrier attached to the base station 300.
  • the sending unit 301 sends a message to the terminal that is switched from the first base station to the first carrier of the base station 300, indicating that the terminal camps on the second carrier of the base station 300, and the coverage of the second carrier is greater than the The coverage of the first carrier.
  • the switching unit 302 when the sending unit 301 is configured to send a message to the terminal, indicating that the terminal camps on the second carrier with a large coverage, the switching unit 302 is configured to switch the terminal from the first carrier to the base station 300.
  • Second carrier In a practical application, the base station 300 configures the coverage of the first carrier and the second carrier that belong to the base station 300 to be different when the carrier is configured, that is, the coverage ranges of the first carrier and the second carrier are different.
  • the base station 300 further includes a control unit, configured to control a transmit power of the first carrier or the second carrier, so that a coverage of the second carrier is greater than the first carrier. Coverage.
  • control unit may control the transmit power of the second carrier to be greater than the transmit power of the first carrier by controlling the transmit power of the second carrier; or by controlling the transmit power of the first carrier.
  • the transmit power of the first carrier is made smaller than the transmit power of the second carrier.
  • the sending unit 301 sends a message to the terminal, indicating that the terminal camps in the second base station and the coverage is greater than the first carrier.
  • the switching unit 302 switches the terminal from the first carrier to the second carrier in the base station 300 whose coverage is larger than the first carrier.
  • the resident station 300 covers the second carrier with a larger coverage. Therefore, when the terminal moves across the AN boundary, the terminal can stably reside on the second carrier of the base station 300, This will cause the terminal to have an idle state ping-pong switch.
  • the terminal 400 since the terminal can be subordinate to the base station 300 after handover after being switched from the first base station, the terminal can initiate a call at any time, thereby reducing the call access delay.
  • the above embodiment describes the base station provided by the embodiment of the present invention.
  • the terminal provided by the embodiment of the present invention is introduced. As shown in FIG. 4, the terminal 400 includes:
  • the first switching unit 401 is configured to switch from the first base station to the first carrier of the second base station, where the first receiving unit 402 is configured to receive the first message sent by the second base station, where the first message is used to indicate that the terminal camps to The second carrier of the second base station, the coverage of the second carrier is greater than the coverage of the first carrier;
  • the second switching unit 403 is configured to switch from the first carrier to the second carrier of the second base station.
  • the carrier that is dependent on the first base station includes a third carrier
  • the carrier that is dependent on the second base station includes a first carrier and a second carrier, where the frequency of the first carrier and the third carrier are the same
  • a base station and a second base station are two adjacent base stations.
  • the first receiving unit 402 receives the first message sent by the second base station, where the first message is used to indicate
  • the terminal camps on the second carrier of the second base station, and the second switching unit 403 switches the terminal 400 from the first carrier to the second carrier of the second base station, and the coverage of the second carrier is greater than the coverage of the first carrier.
  • the coverage of the first carrier and the second carrier that are also subordinate to the second base station are different, that is, the coverage ranges of the first carrier and the second carrier are different.
  • the terminal 400 may further include (not shown in FIG. 4): a third switching unit, configured to switch from a second carrier of the second base station to a fourth carrier of the first base station, and fourth The frequency of the carrier is the same as the frequency of the second carrier, and the coverage of the fourth carrier is smaller than the coverage of the third carrier;
  • a second receiving unit configured to receive a second message sent by the first base station, where the second message is used to indicate that the terminal camps on the third carrier of the first base station;
  • a fourth switching unit configured to switch from the fourth carrier to the third carrier of the first base station.
  • each unit module For the execution method of the module, please refer to the method shown in Figure 2, which will not be described here.
  • the camping mode of the terminal on the carrier may be set to be the carrier with the largest coverage area on the base station side. It is assumed that the carrier that belongs to the second base station includes the first carrier and the second carrier, the coverage of the first carrier is smaller than the coverage of the second base station, and the coverage of the second base station is that the second base station has the largest coverage on the second base station.
  • the first switching unit 401 switches the terminal 400 from the third carrier of the first base station to the first carrier of the second base station, since the coverage of the first carrier on the second base station is smaller than the coverage of the second base station, Therefore, the second switching unit 403 needs to switch the terminal 400 from the first carrier of the second base station to the second carrier of the second base station. Therefore, when the terminal moves across the AN boundary, it can stably reside on the second carrier of the second base station, and does not cause idle ping-pong switching of the terminal.
  • the communication system 500 includes: a first base station 501, a second base station 502, and a terminal 503, where
  • the second base station 502 includes: a second base station sending unit 5021, configured to send a first message to the terminal 503 that is switched from the first base station 501 to the first carrier of the second base station 502, and instruct the terminal 503 to camp on the second base station 502.
  • the second carrier, the coverage of the second carrier is greater than the coverage of the first carrier;
  • the second base station switching unit 5022 is configured to switch the terminal 503 from the first carrier to the second carrier of the second base station 502;
  • the terminal 503 includes: a first switching unit 5031, configured to switch from the first base station 501 to the first carrier of the second base station 502; a first receiving unit 5032, configured to receive the first message sent by the second base station 502, the first message a second carrier for indicating that the terminal 503 is camped on the second base station 502.
  • the coverage of the second carrier is greater than the coverage of the first carrier.
  • the second switching unit 5033 is configured to switch from the first carrier to the second base station 502. Second carrier.
  • the foregoing first base station 501 specifically includes: a first base station sending unit 5011, configured to send a second message to the terminal 503 that is switched from the second base station 502 to the fourth carrier of the first base station 501, to indicate that the terminal 503 resides To the third carrier of the first base station 501, the coverage of the fourth carrier is smaller than the coverage of the third carrier; the first base station switching unit 5012 is configured to switch the terminal 503 from the fourth carrier to the third carrier of the first base station 501. ;
  • the terminal 503 further includes:
  • the third switching unit 5034 is configured to switch from the second carrier of the second base station 502 to the first base station 501.
  • the fourth carrier, the frequency of the fourth carrier is the same as the frequency of the second carrier, and the coverage of the fourth carrier is smaller than the coverage of the third carrier.
  • the second receiving unit 5035 is configured to receive the first sending by the first base station 501.
  • the second message is used to indicate that the terminal 503 camps on the third carrier of the first base station 501.
  • the fourth switching unit 5036 is configured to switch from the fourth carrier to the third carrier of the first base station 501.
  • the second base station 502 switches the terminal from the first carrier to the second base station 502, and the coverage is greater than the first.
  • the second carrier of the carrier Since the terminal 503 is switched from the first base station 501 to the second base station 502, the second carrier in the second base station 502 having a larger coverage is camped on, so that the terminal 503 can stably reside in the first time when moving across the AN boundary.
  • the second carrier of the second base station 502 does not cause the terminal to perform idle state ping-pong handover.
  • the terminal 503 since the terminal 503 is always subordinate to the switched second base station 502 after being switched from the first base station 501, the terminal 503 can initiate a call at any time. This reduces the call access delay.
  • the handover process between the first base station 601 and the second base station 602 of the terminal 605 will be described in detail, and the first base station 601 is configured.
  • the third carrier 6011 and the fourth carrier 6012 are subordinated, and the coverage of the third carrier 6011 is greater than the coverage of the fourth carrier 6012.
  • the second base station 602 is associated with the first carrier 6021 and the second carrier 6022, and the first carrier 6021.
  • the coverage is smaller than the coverage of the second carrier 6022; the frequency of the third carrier 6011 and the first carrier 6021 is the same as FA, and the frequency of the fourth carrier 6012 and the second carrier 6022 is the same as the switching center of the FB, FA and FB.
  • the switching center band of the FA is 603, and the switching center band of the FB is 604.
  • the subordinate terminal 605 on the first base station 601 resides in the coverage of the subordinate first base station 601.
  • the largest carrier is the third carrier 6011. Assume that the terminal 605 moves from the first base station 601 to the second base station 602.
  • the third carrier 6011 When the terminal 605 is on the left side of the handover center band 604 of the frequency point FA, the third carrier 6011 is strong, and the terminal 605 can stably reside on the third carrier 6011.
  • the signal of the third carrier 6011 becomes weak, and the terminal 605 receives the first carrier 6021 signal of the second base station 602 at any time, and can no longer stably reside in the first base station 601, the terminal. 605 is switched to the first carrier 6021 whose frequency is the same as the third carrier 6011.
  • the second base station 602 requests the terminal 605.
  • the second carrier 6022 which is the carrier with the largest coverage in the second base station 602, is camped on, so that the terminal 605 immediately switches to the second carrier 6022 of the second base station 602 to camp.
  • the signal of the second carrier 6022 is very good, and the terminal 605 can be stably parked, and the ping-pong will not be switched to the first base station 601, so that the idle state ping-pong can be prevented.
  • the terminal 605 when the terminal moves from the second base station 602 to the first base station 601, the terminal 605 is stable to the second carrier of the second base station 602 with strong signal when the handover center band 603 of the frequency point FB is right.
  • the terminal 605 switches to the fourth carrier 6012 with the same frequency as the second carrier 6022.
  • the first base station 601 requests the terminal 605 to be stationed.
  • the third carrier 6011 which is the carrier with the largest coverage of the first base station 601, is left, and the terminal 605 immediately switches to the third carrier 6011 of the first base station 601 to camp.
  • the signal of the third carrier 6011 is very good, and the terminal 605 can be stably camped, and the ping-pong will not be switched to the second base station 602, so that the idle state ping-pong switching can be prevented.

Abstract

La présente invention se rapporte à un procédé de commutation, ainsi qu'à un système de communication et à un appareil associés. Le procédé décrit dans les modes de réalisation de la présente invention comprend les étapes suivantes : une seconde station de base transmet un message à un terminal qui exécute une commutation, d'une première station de base à une première porteuse d'une seconde station de base, pour indiquer que le terminal réside sur une seconde porteuse de la seconde station de base, la couverture de la seconde porteuse dépassant la couverture de la première porteuse ; et la seconde station de base commute le terminal, de la première porteuse à la seconde porteuse de la seconde station de base.
PCT/CN2011/077673 2011-07-27 2011-07-27 Procédé de commutation, et système de communication et appareil associés WO2012159347A1 (fr)

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CN201180001176.3A CN103026759B (zh) 2011-07-27 2011-07-27 一种切换的方法和相关装置及通信系统
PCT/CN2011/077673 WO2012159347A1 (fr) 2011-07-27 2011-07-27 Procédé de commutation, et système de communication et appareil associés

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WO2017076310A1 (fr) * 2015-11-03 2017-05-11 中兴通讯股份有限公司 Procédé et dispositif de commutation de point de fréquence

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CN110809283A (zh) * 2018-08-06 2020-02-18 大唐移动通信设备有限公司 一种乒乓切换的抑制方法和装置

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CN101232713A (zh) * 2007-09-20 2008-07-30 华为技术有限公司 一种实现边界区域硬切换的方法和装置
CN102037761A (zh) * 2008-05-11 2011-04-27 高通股份有限公司 使用空闲模式在第一网络和第二网络之间进行系统间切换以快速地重新连接到第一网络
CN102113385A (zh) * 2008-08-04 2011-06-29 高通股份有限公司 增强的空闲切换以支持毫微微小区

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CN101232713A (zh) * 2007-09-20 2008-07-30 华为技术有限公司 一种实现边界区域硬切换的方法和装置
CN102037761A (zh) * 2008-05-11 2011-04-27 高通股份有限公司 使用空闲模式在第一网络和第二网络之间进行系统间切换以快速地重新连接到第一网络
CN102113385A (zh) * 2008-08-04 2011-06-29 高通股份有限公司 增强的空闲切换以支持毫微微小区

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017076310A1 (fr) * 2015-11-03 2017-05-11 中兴通讯股份有限公司 Procédé et dispositif de commutation de point de fréquence

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