WO2011003340A1 - 辅载波分配方法 - Google Patents

辅载波分配方法 Download PDF

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Publication number
WO2011003340A1
WO2011003340A1 PCT/CN2010/074940 CN2010074940W WO2011003340A1 WO 2011003340 A1 WO2011003340 A1 WO 2011003340A1 CN 2010074940 W CN2010074940 W CN 2010074940W WO 2011003340 A1 WO2011003340 A1 WO 2011003340A1
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WO
WIPO (PCT)
Prior art keywords
terminal
base station
carrier
target base
message
Prior art date
Application number
PCT/CN2010/074940
Other languages
English (en)
French (fr)
Inventor
李楠
陈玉芹
曲红云
刘扬
Original Assignee
中兴通讯股份有限公司
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
Priority claimed from CN200910158919.2A external-priority patent/CN101945452B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011003340A1 publication Critical patent/WO2011003340A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0072Transmission or use of information for re-establishing the radio link of resource information of target access point

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a secondary carrier allocation method. Background technique
  • the 802.16m system is a multi-carrier system based on Orthogonal Frequency Division Multiplex Access (OFDMA) technology evolved on the basis of the 802.16e system.
  • the multi-carrier architecture of the 802.16m system is shown in FIG. 1.
  • a single Media Access Control (MAC) controls a physical layer (Physical, hereinafter referred to as PHY) including multiple channels, for example, in FIG.
  • PHY Physical, hereinafter referred to as PHY
  • the channel 1 and the channel 2 channel N are included, and each channel may have a different bandwidth.
  • the bandwidth of channel 1 is 5 MHz
  • the bandwidth of channel 2 is 10 MHz
  • the bandwidth of channel N is 20 MHz
  • the above channel may be It belongs to a continuous or discontinuous frequency band.
  • ABS Advanced Base Station
  • AMS Advanced Terminal
  • the 802.16m system is configured with one or more Fully configured carriers, including all synchronous, broadcast, multicast, and unicast control information, including information and parameters for multi-carrier and other carrier operations; and one or more configured Partially configured carrier for downlink transmission only, including all control channels supporting downlink transmission.
  • the above fully configured carrier can be used as the primary carrier or the secondary carrier of the AMS.
  • the part of the configured carrier can only serve as the carrier of the AMS.
  • Each AMS has only one primary carrier, which is used to carry control information of the interactive service, all physical layers, and the medium access control layer, and is mainly used to control the operation of the AMS, such as network access.
  • Each AMS may have one or more secondary carriers, or no secondary carrier.
  • the secondary carrier is a carrier for transmitting services allocated by the AMS through ABS-specific commands and rules. Some control signaling supporting multi-carrier operation may also be sent on the secondary carrier.
  • QoS quality of service
  • the MS will terminate the connection with the current serving base station and switch to other neighboring base stations to obtain better. QoS.
  • the 802.16 system also provides an idle (Idle) mode, the purpose of which is to reduce the energy consumption of the MS and reduce the use of the air resources of the serving base station.
  • Idle idle
  • the normal handover procedure is as follows: The terminal sends a handover request message, the serving base station sends a handover command message to respond, or the serving base station actively sends a handover command message, and the terminal sends a handover command after receiving the handover command message of the base station. Indicate the message.
  • the terminal begins performing network re-entry on the target base station.
  • the network re-entry process is: performing downlink preamble sequence synchronization and uplink and downlink information synchronization on the target base station and performing measurement, and the target base station sends a measurement response message to the terminal, and the terminal performs optional capability negotiation and registration according to the instruction of the target base station.
  • the present invention provides a method for allocating a secondary carrier to solve the problem that the secondary carrier cannot be allocated to the terminal during the handover process in the multi-carrier system in the prior art.
  • a secondary carrier allocation method for allocating a secondary carrier to a terminal during handover of a terminal from a serving base station to a target base station.
  • the method for allocating a secondary carrier according to the present invention includes: in a process in which a terminal switches from a serving base station to a target base station, the serving base station sends a message to the terminal, where the message carries one or more target base stations allocated for the terminal.
  • Carrier information Preferably, the foregoing message includes: a handover command message or a multi-carrier response message.
  • another secondary carrier allocation method for a terminal to allocate a secondary carrier to a terminal when the target base station performs a network re-entry procedure.
  • the secondary carrier allocation method according to the present invention includes: the target base station sends a message to the terminal, where the message carries information of the secondary carrier allocated by the target base station to the terminal.
  • the foregoing message includes but is not limited to one of the following: a ranging response message, a registration response message, and a multi-carrier response message.
  • a method for allocating a secondary carrier is provided. The method is used for a terminal to allocate a secondary carrier to a terminal after the target base station completes network reentry.
  • the secondary carrier allocation method includes: the target base station sends a message to the terminal, where the message carries information of the secondary carrier allocated by the target base station to the terminal.
  • the foregoing message includes: a multi-carrier response message.
  • the serving base station may send the secondary carrier allocated by the target base station to the terminal, or may be in the network of the target base station.
  • the target base station allocates the secondary carrier to the terminal, which solves the problem that the secondary carrier cannot be allocated to the terminal when the terminal switches in the multi-carrier system in the prior art.
  • FIG. 1 is a schematic structural diagram of a multi-carrier system in the related art
  • FIG. 2 is a flowchart of a terminal handover from a serving base station to a target base station according to an embodiment of the present invention
  • FIG. 3 is a flowchart according to an embodiment of the present invention.
  • 1 is a flow chart
  • FIG. 4 is a flow chart of a method 2 according to an embodiment of the present invention
  • Figure 5 is a flow chart of the third embodiment of the present invention
  • Figure 6 is a flow chart of the first embodiment
  • Figure 7 is a flow chart of the second embodiment
  • Figure 8 is a flow chart of the third embodiment
  • FIG. 10 is a flowchart of the fifth embodiment
  • FIG. 11 is a flowchart of the sixth embodiment.
  • the serving base station or the target base station needs to allocate the secondary carrier to the terminal in the handover process.
  • the terminal may send, to the terminal, information about the secondary carrier allocated by the one or more candidate target base stations recommended by the serving base station according to the information of the terminal acquired from the serving base station. Or, the secondary carrier is allocated to the terminal by the target base station during or after the network re-entry process of the target base station.
  • the terminal referred to in the embodiment of the present invention is a terminal that supports multi-carrier operation
  • the base station is a base station that supports multi-carrier operation.
  • the terminal is an advanced terminal (AMS).
  • the base station is an advanced base station (ABS).
  • FIG. 2 is a flowchart of a handover of a terminal from a serving base station to a target base station according to an embodiment of the present invention. As shown in FIG.
  • the handover of a terminal from a serving base station to a target base station mainly includes the following steps: Step 201: Before the terminal that supports the multi-carrier operation performs the handover, the terminal obtains multi-carrier configuration information of one or more neighboring base stations from the neighbor broadcast message sent by the serving base station; Step 202, the monthly service base station passes the bone network Providing information to the one or more candidate target base stations, or requesting, by the one or more candidate target base stations, the information of the terminal to the monthly base station or other network entity through the bone network, and the serving base station sends the terminal information to the terminal network through the bone network One or more candidate target base stations, where the terminal information includes multi-carrier capability information of the terminal obtained by the serving base station when performing multi-carrier capability interaction with the terminal; Step 203: The terminal sends a request message to the service base station on its primary carrier, The request is performed.
  • the step is optional. In the case that the terminal actively initiates the handover, the step needs to be performed. If the serving base station initiates the handover, the step is not required. Specifically, the terminal may select one or more neighboring base stations that the UE wishes to switch to as the candidate target base station according to the multi-carrier configuration information of one or more neighboring base stations in the neighboring cell broadcast message sent by the serving base station, and further, may Selecting one or more carriers that it wishes to switch to as candidate target carriers under the selected one or more candidate target base stations; the terminal selects information of one or more candidate target base stations selected by itself and candidate targets under each candidate target base station The carrier information is carried in the above request message and sent to the serving base station.
  • the information of each candidate target carrier carried in the request message may include: physical frequency point information of each candidate target carrier and/or physical carrier number of each candidate target carrier, that is, physical frequency point information may be used and/or Or the physical carrier number identifies each candidate target carrier.
  • the base station actively sends a handover command message to the terminal, where the handover command message carries at least the following Information: (1) information of one or more candidate target base stations recommended by the serving base station from the one or more neighboring base stations to the terminal and one or more candidate target carriers under each candidate target base station, where each The information of the candidate target carrier may include: physical frequency point information of each candidate target carrier and/or physical carrier number of each candidate target carrier, that is, physical frequency point information and/or physical carrier number may be used to identify each candidate carrier; (2) Re-entry mode identifier, which is used to indicate whether the terminal keeps a connection with the serving base station during network re-entry; (3) an action time on each candidate target carrier, the time indicating that the terminal initiates a network on the target carrier Specific moments of re-entry; (4) Industry available for each candidate target carrier Level indicator.
  • Step 205 The terminal sends a handover indication message to the service base station on the primary carrier to initiate the handover.
  • the terminal may obtain one or more candidate target base stations and each of the candidate message and/or the handover command message.
  • One of the one or more candidate target carriers under the candidate target base station is selected as the target base station for handover, and one of the one or more candidate target carriers of the target base station is selected as the target carrier of the handover, and then the handover is performed. Indicate the message.
  • the foregoing handover indication message sent by the terminal includes at least one of the following: an action codeword for starting handover, information of a target base station and a target carrier to be switched, and a carrier corresponding to a radio channel for performing handover by the terminal.
  • the carrier information may be physical frequency point information and/or a physical carrier number.
  • the ranging response The message includes at least one of the following information: indication information indicating whether the basic capability negotiation message interaction can be omitted in the re-access, indication information indicating whether the registration message interaction can be omitted, an indication message that the multi-carrier capability interaction can be omitted, whether the target base station sends The indication information of the active basic capability negotiation response message, and the indication information of whether the target base station sends the active registration response message.
  • the ranging response message may further include: basic capability negotiation message coding, registration message coding; Step 207, terminal Receiving target base station to send The foregoing ranging response message, according to the indication carried in the ranging response message, performs an optional capability negotiation and registration process to complete the network re-entry process on the target base station.
  • the embodiment of the present invention provides three methods for allocating a secondary carrier, which is used to allocate a secondary carrier to the terminal in the process of the terminal switching from the monthly base station to the target base station.
  • the three methods are described separately below.
  • Method 1 The secondary carrier is allocated by the monthly service base station.
  • the serving base station interacts with the one or more target base stations through the bone network to obtain the secondary carrier allocated on the target base station for the terminal.
  • the message transmitted by the base station to the terminal carries information of the secondary carrier allocated by the target base station to the terminal.
  • the serving base station can be the main The message is sent (that is, the handover is initiated by the serving base station), and the message may also be sent after receiving the request message sent by the terminal (ie, the handover is initiated by the terminal).
  • FIG. 3 is a flowchart of a method 1 according to an embodiment of the present invention. As shown in FIG.
  • the serving base station allocates a secondary carrier for the terminal, which mainly includes the following steps: Step 301: One or more candidates of the terminal
  • the target base station allocates one or more secondary carriers to the terminal according to the information of the terminal obtained by the method described in the foregoing step 4, and sends the information of the one or more secondary carriers to the serving base station;
  • the serving base station sends a message to the terminal, where the message carries information of one or more secondary carriers allocated by the one or more candidate target base stations recommended by the serving base station, and in the specific implementation process, the secondary carrier carried in the message
  • the information includes, but is not limited to, one of the following or any combination thereof: the physical frequency point information of the secondary carrier, the physical carrier number of the secondary carrier, and the logical carrier number allocated by the candidate target base station to the secondary carrier, that is, the physical frequency point information may be used or
  • the physical carrier number identifies each secondary carrier and assigns a logical carrier number to each secondary carrier.
  • the terminal selects one base station from the one or more candidate target base stations as the target base station for handover, and selects one of the one or more candidate target carriers of the target base station as the target carrier of the handover.
  • the terminal Before the network re-enters, the terminal has obtained the information of the secondary carrier allocated by the target base station to the terminal from the monthly service base station.
  • the terminal may complete the network re-entry on the target carrier on the target base station, and activate the allocated Secondary carrier.
  • the serving base station may set an activation time parameter in the above message. If the parameter takes a value of zero, it indicates that the allocated secondary carrier is activated immediately after the network access is completed, and the parameter is not zero, then the activation is performed.
  • the secondary carrier When the time comes, the secondary carrier is activated; if the serving base station does not set the activation time parameter, the terminal can consider that the allocated secondary carrier is activated immediately after the network access is completed.
  • the message carrying the information of the secondary carrier allocated by the terminal includes: a handover command message or a multi-carrier response message in step 204 of the foregoing process, or other multi-carrier message related to multiple carriers.
  • the method further includes: acquiring, by the terminal, the broadcasted multi-carrier configuration information on the target base station, or using the unicast after the target base station performs network re-entry or completes network re-entry.
  • Request message to request complete complete from the target base station Carrier configuration information that is, the terminal sends a request message to the target base station unicast, and requests the target base station to send complete multi-carrier configuration information of the target base station to the terminal, and when receiving the request message, the target base station returns the target base station to the terminal.
  • Configuration information for all multi-carriers Method 2: Secondary carrier allocation by the target base station in the network re-entry process In the method, the target base station allocates a secondary carrier to the terminal in the network re-entry process.
  • the network re-entry process may be a network re-entry process in the process of the terminal switching from the serving base station to the target base station (ie, the process of step 205 - step 207 above); or the terminal may switch from the idle mode to the idle mode.
  • the target base station is the target base station that the terminal finally determines to enter. 4 is a flowchart of a method 2 according to an embodiment of the present invention. As shown in FIG.
  • the target base station allocates a secondary carrier for a terminal in a network re-entry process, which mainly includes the following steps: Step 401: When a terminal sends a handover indication message to a serving base station, In the handover indication message, the indication information indicating that the target base station allocates the secondary carrier to the terminal during the network re-entry process is carried out; Step 403: The target base station sends a message to the terminal during the network re-entry process of the target base station, where The message carries the information of the secondary carrier allocated by the target base station to the terminal.
  • the information of the secondary carrier carried in the message includes one or any combination of the following: physical frequency information of the secondary carrier, physical carrier of the secondary carrier
  • the logical carrier number assigned to the secondary carrier by the candidate target base station that is, the physical frequency point information or the physical carrier number may be used to identify each secondary carrier, and the logical carrier number is assigned to each secondary carrier.
  • the serving base station interacts with the target base station through the bone thousand network, and the serving base station sends the terminal information (including the multi-carrier capability information of the terminal) to the target base station, where As described in step 202 above.
  • the target base station After acquiring the information of the terminal, the target base station allocates the secondary carrier information to the terminal, and carries the information of the secondary carrier allocated for the terminal in the message.
  • the handover indication may be performed.
  • the message carries the indication information indicating that the target base station allocates the secondary carrier to the terminal during the network re-entry process.
  • the serving base station After receiving the indication information, the serving base station sends the indication information to the target base station, according to the indication information, the target base station is heavy on the network.
  • the secondary carrier is allocated to the terminal during the entering process, and the foregoing message is sent; or the target base station can also re-enter the network.
  • the secondary carrier is actively allocated to the terminal, that is, the foregoing step 401 is optional.
  • the foregoing message includes but is not limited to: a ranging response message, or an active registration response message, a multi-carrier response message, or other multi-carrier related multi-carrier message.
  • the target base station may carry the information of the secondary carrier in the ranging response message by using one of the following manners:
  • an activation time parameter may be set, and if the parameter takes a value of zero, it indicates that the network is in the network. After the re-entry is completed, the secondary carrier is activated. If the parameter is not zero, the secondary carrier is activated when the activation time comes. If the target base station does not set the activation time parameter, the terminal can consider that the allocated secondary carrier is activated immediately after the network re-entry is completed.
  • the terminal obtains only the configuration information of the fully configured carrier of the one or more neighboring base stations from the neighboring cell broadcast message of the serving base station, or the terminal does not obtain the multi-carrier configuration information of the neighboring cell base station from the neighboring area broadcast message,
  • the method further includes: acquiring, by the terminal, the multi-carrier configuration information broadcast by the target base station on the target base station when the target base station performs network re-entry or after the re-entry is completed, or the terminal uses the terminal
  • the unicast request message requests complete multi-carrier configuration information from the target base station, which is similar to the method 1 described above.
  • Method 3 The secondary base station is allocated by the target base station after the network re-entry process.
  • the target base station allocates the secondary carrier to the terminal after the terminal re-enters the network of the target base station (that is, after the step 4 is 207) At this time, the target base station has become the new service base station of the terminal.
  • 5 is a flowchart of a method for allocating a secondary carrier according to method 3 of the embodiment of the present invention. As shown in FIG. 5, in the method, the target base station is a terminal after the terminal re-enters the network at the target base station.
  • the assignment of the secondary carrier mainly includes the following steps: Step 501: After the network re-entry process is completed, the terminal sends a request message to the target base station to request the target base station to allocate the secondary carrier. Step 503: The target base station sends a response message to the terminal, where the response message carries The information of the secondary carrier that is allocated to the terminal, specifically, the information of the secondary carrier carried in the response message includes one or any combination of the following: physical frequency information of the secondary carrier, physical carrier of the secondary carrier.
  • the logical carrier number assigned to the secondary carrier by the candidate target base station that is, the physical frequency point information or the physical carrier number may be used to identify each secondary carrier, and the logical carrier number is assigned to each secondary carrier.
  • the target base station may be configured to send the foregoing response message to the terminal in response to the request message when receiving the request message sent by the terminal, and allocate one or more secondary carriers to the terminal.
  • the current monthly service base station ie, the target base station
  • actively sends the foregoing response message to allocate a secondary carrier to the terminal that is, the foregoing step 4 is 501.
  • the foregoing request message may be a multi-carrier request message (AII-MC-REQ) or other multi-carrier related multi-carrier message
  • the foregoing response message may be a multi-carrier response message (AII-MC-RSP) or Other multi-carrier messages related to multi-carrier.
  • the serving base station before the target base station performs the network re-entry process, the serving base station interacts with the target base station through the bone thousand network, and the serving base station sends the terminal information (including the multi-carrier capability information of the terminal) to the target base station, where As described in step 204 above.
  • the target base station After acquiring the information of the terminal, the target base station allocates the secondary carrier information to the terminal, and carries the information of the secondary carrier allocated for the terminal in the message.
  • the target base station may set an activation time parameter for the terminal to allocate the secondary carrier. If the value of the parameter is zero, it indicates that the secondary carrier is activated immediately when the secondary carrier is allocated, and the parameter is not zero, then the activation is performed.
  • the secondary carrier When the time comes, the secondary carrier is activated; if the target base station does not set the activation time parameter, the terminal can consider that the assigned secondary carrier is activated immediately when the secondary carrier is allocated. Specifically, similar to the foregoing method 1 and method 2, if in the foregoing step 201, the terminal only obtains configuration information of the fully configured carrier of one or more neighboring base stations from the neighboring area broadcast message, or the terminal does not obtain the neighboring area from the neighboring area. Before obtaining the multi-carrier configuration information of the neighboring base station in the broadcast message, the method further includes: acquiring, by the terminal, the multi-carrier configuration information broadcast by the target base station on the target base station, or sending the unicast by the terminal.
  • Embodiment 1 In this embodiment, the method 1 is used to allocate an i carrier to the terminal.
  • FIG. 6 is a flowchart of the embodiment. As shown in FIG.
  • the serving base station allocates a secondary carrier to the terminal, which mainly includes The following steps are as follows: Step 601: The terminal sends a handover request message to the serving base station. Step 603: The serving base station receives the handover request message, and sends a handover command message to the terminal, where the handover command message carries: the service base station is recommended by the terminal. Or information of one or more secondary carriers allocated by the candidate target base station according to the information of the terminal obtained from the serving base station or other network entity; the secondary carrier activation time parameter, if the parameter takes a value of zero, indicating that the network is heavy The secondary carrier is activated immediately after the access is completed.
  • a timer may be set, and the duration of the timer is the time parameter.
  • the timer is started, and when the timer arrives, the secondary carrier allocated to the terminal is activated;
  • Step 605 the terminal Sending the handover indication information to the serving base station, where the handover indication information carries the target base station and the target carrier to be switched, the radio channel information to be used by the terminal, or the carrier information corresponding to the radio frequency channel;
  • Step 607 the terminal is in the target carrier
  • the network re-entry process is performed, and the ranging is first performed. Since the target base station has obtained the terminal information from the bone network, the target base station can construct the basic capability negotiation message coding, the registration message code, and carry it according to the information of the terminal.
  • the ranging response message is sent to the terminal.
  • Step 609 The terminal successfully receives the ranging response message with the capability negotiation and registration message code sent by the target base station, and the network re-entry is completed, and the data connection can be established on the carrier.
  • the carrier becomes the new primary carrier of the terminal, and According parameter setting activation time before activation by the serving base station assigned secondary carrier.
  • Embodiment 2 In this embodiment, the secondary carrier is allocated to the terminal by using the foregoing method 2, and the target base station carries the secondary carrier allocated to the terminal in the ranging response message according to the indication sent by the terminal.
  • FIG. 7 is a flowchart of the embodiment. As shown in FIG.
  • the target base station allocates a secondary carrier to the terminal, which mainly includes the following steps: Step 701: The terminal sends a handover request message to the serving base station; Step 703, the service The base station receives the handover request message, and sends a handover command message to the terminal. Step 705: The terminal sends a handover indication message to the serving base station, where the handover indication message carries the target base station and the target carrier to be switched, and the radio frequency to be used by the terminal.
  • the handover indication message further carries indication information indicating that the target base station is allocated a secondary carrier for the terminal in the network re-entry process;
  • Step 707 the terminal performs on the target carrier
  • the network re-entry process first performs ranging. Since the target base station has obtained the terminal information from the bone network, the target base station can construct a basic capability negotiation message code, register the message code, and carry it in the test according to the information of the terminal. Sent from the response message to the terminal, and Since the terminal of the switching indication message indicating the desired target secondary carrier base station in the network re-entry allocation process, therefore, the target base station the ranging response message further carries the secondary carrier assigned to the terminal information.
  • the target base station sets a secondary carrier activation time parameter, where the parameter takes a value of zero, indicating that the secondary carrier is activated immediately after the network reentry is completed;
  • Step 709 the terminal successfully receives the capability negotiation and registration sent by the target base station.
  • the message-coded ranging response message indicates that the network re-entry is complete, and a data connection can be established on the carrier, the carrier becomes the new primary carrier of the terminal, and the secondary carrier allocated by the target base station is activated according to the setting of the activation time parameter.
  • the secondary carrier is allocated to the terminal by using the foregoing method 2, and the target base station carries the secondary carrier allocated to the terminal in the registration response message according to the indication sent by the terminal.
  • the target base station allocates a secondary carrier to the terminal, which mainly includes the following steps: Step 801: The terminal sends a handover request message to the serving base station; Step 803: The serving base station sends a handover command message to the terminal. Step 805: The terminal sends a handover indication message to the serving base station, where the handover indication message carries the target base station and the target carrier to be switched, and the radio channel information to be used by the terminal.
  • the carrier information corresponding to the radio frequency channel, and the handover indication message further carries indication information indicating that the target base station is allocated a secondary carrier during the network re-entry process;
  • Step 807 the terminal performs network re-entry on the target carrier.
  • the process first performs ranging. Since the target base station has obtained the terminal information from the bone network, the target base station can construct an active basic capability negotiation response message, an active registration response message, and send the terminal to the terminal, and The handover indication message indicates that the target base station is required to allocate the secondary carrier in the network re-entry process. Therefore, the target base station carries the information of the secondary carrier allocated to the terminal in the registration response message.
  • the target base station sets a non-zero activation time parameter, indicating that the secondary carrier is activated at the parameter specified time, which is similar to the second embodiment.
  • the terminal successfully receives the registration response message sent by the target base station, indicating that the network
  • a data connection can be established on the carrier
  • the carrier becomes the new primary carrier of the terminal
  • the secondary carrier allocated by the target base station is activated according to the setting of the activation time parameter.
  • the secondary carrier is allocated to the terminal by using the foregoing method 2, and the target base station actively carries the secondary carrier allocated to the terminal in the ranging response message.
  • FIG. 9 is a flowchart of the embodiment. As shown in FIG.
  • the target base station allocates a secondary carrier to the terminal, which mainly includes the following steps: Step 901: The terminal sends a handover request message to the monthly service base station; Step 903 The serving base station sends a handover command message to the terminal. Step 905: The terminal sends the handover indication information to the serving base station, where the target base station and the target carrier to be switched, the radio channel information to be used by the terminal, or the carrier information corresponding to the radio channel; Step 907: The terminal performs a network re-entry process on the target carrier, and first performs ranging.
  • the target base station Since the target base station has obtained the terminal information from the bone network, the target base station can construct the basic capability negotiation message coding and the registration message coding according to the It is carried in the ranging response message and sent to the terminal.
  • the target base station may actively perform secondary carrier allocation for the terminal, and carry the information of the allocated secondary carrier in the ranging response message.
  • the target base station sets a carrier activation time parameter, and the value of the parameter is not zero, indicating that the secondary carrier is activated at the specified time.
  • Step 909 the terminal successfully receives the measurement response message with the registration message code sent by the target base station, indicating that the network re-entry is completed, and the data connection can be established on the carrier, the carrier becomes the new primary carrier of the terminal, and at the same time, according to the activation
  • the setting of the time parameter activates the secondary carrier allocated by the target base station.
  • the secondary carrier is allocated to the terminal by using the foregoing method 2, and the target base station actively carries the secondary carrier allocated to the terminal in the registration response message.
  • 10 is a flowchart of the embodiment, as shown in FIG.
  • the target base station allocates a secondary carrier for the terminal, which mainly includes the following steps: Step 101: The terminal sends a handover request message to the monthly service base station; Step 103: The serving base station sends a handover command message to the terminal. Step 105: The terminal sends the handover indication information to the serving base station, where the target base station and the target carrier to be handed over, the radio channel information to be used by the terminal, or the carrier corresponding to the radio channel Information: Step 107: The terminal performs a network re-entry procedure on the target carrier, and first performs ranging.
  • the target base station Since the target base station has obtained the terminal information from the bone network, the target base station can construct an active basic capability negotiation response message and actively The registration response message is sent to the terminal, and the target base station can actively allocate the secondary carrier to the terminal, and carry the secondary carrier list in the registration response message.
  • the activation time parameter set by the target base station takes a value of zero, indicating that the secondary carrier is activated immediately after the network re-entry is completed;
  • Step 109 the terminal successfully receives the registration response message sent by the target base station, indicating that the network re-entry is completed.
  • a data connection can be established on the carrier, the carrier becomes the new primary carrier of the terminal, and the secondary carrier allocated by the target base station is activated according to the setting of the activation time parameter.
  • Embodiment 6 the foregoing method 3 allocates a secondary carrier to the terminal, and the terminal requests the target base station to allocate a secondary carrier for the terminal.
  • 11 is a flowchart of the embodiment, as shown in FIG. 11, in this embodiment, the target base station allocates a secondary carrier for the terminal, which mainly includes the following steps: Step 1101: The terminal sends a handover request message to the monthly service base station; Step 1103: The serving base station sends a handover command message to the terminal.
  • Step 1105 The terminal sends the handover indication information to the serving base station, where the target base station and the target carrier to be switched, the radio channel information to be used by the terminal, or the carrier corresponding to the radio channel
  • Step 1107 The terminal performs a network re-entry procedure on the target carrier, and first performs ranging.
  • the target base station Since the target base station has obtained the terminal information from the bone network, the target base station can construct an active basic capability negotiation response message and actively The registration response message is sent to the terminal; Step 1109, the terminal successfully receives the registration response message sent by the target base station, indicating that the network re-entry is completed, and the data connection can be established on the carrier, and the carrier becomes the new primary carrier of the terminal; Step 1111: The terminal sends a multi-carrier request message (AII-MC-REQ).
  • AII-MC-REQ multi-carrier request message
  • Step 1113 The current monthly service base station receives the request of the terminal, and in response to the request, allocates one or more secondary carriers to the terminal by using a multi-carrier response (AAI-MC-RSP) message;
  • the target base station sets an activation time parameter, and the parameter takes a value of zero, indicating that the secondary carrier is activated immediately upon allocation;
  • Step 1115 The allocated secondary carrier is activated, and the secondary carrier between the terminal and the target base station establishes a connection.
  • one or more secondary carriers allocated by the base station can be obtained by the terminal switching to the target base station or the network re-entry process, which simplifies The system operates, and at the same time avoids problems such as interruption of data transmission caused by re-allocation of the secondary carrier during subsequent data transmission.

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Description

辅载波分配方法 技术领域 本发明涉及移动通信技术领域, 尤其涉及一种辅载波分配方法。 背景技术
802.16m 系统是在 802.16e 系统的基础之上演进而来的、 基于正交频分 多址接入 ( Orthogonal Frequency Division Multiplex Access, 简称为 OFDMA ) 技术的多载波系统。 802.16m系统的多载波架构如图 1所示, 单一的媒体接 入控制实体( Media Access Control, 简称为 MAC )控制包括多个信道的物理 层( Physical, 简称为 PHY ),例如,在图 1中, PHY中包括信道 1、信道 2 信道 N, 每个信道可以有不同的带宽, 例如, 信道 1的带宽为 5MHz, 信道 2的带宽为 10MHz, 信道 N的带宽为 20MHz, 并且, 上述信道可以属于连 续的或不连续的频带。 针对 IEEE 802.16m协议, 出现了支持不同协议的基站和终端, 分别称为 先进基站 (Advanced BS , 简称为 ABS )、 先进终端 (Advanced MS , 简称为 AMS )。 其中, ABS是指既能支持新的 16m协议, 又能兼容原有的 16e协议 的基站; 先进终端 (AMS ) 是指既能支持新的 16m 协议, 又能支持原有的 16e十办议的终端。
802.16m系统配置一个或多个全配置载波 ( Fully configured carrier ), 包 括所有同步、 广播、 多播和单播控制信息, 涉及多载波和其他载波操作的信 息和参数; 同时还可以配置一个或多个仅用于下行传输的部分配置载波 ( Partially configured carrier ), 包含支持下行传输的所有控制信道。 上述全配 置载波可以作为 AMS 的主载波 ( Primary Carrier ) 或者库 i 载波 ( Secondary Carrier ), 上述部分配置载波仅可以作为 AMS的 载波。 每个 AMS只有一 个主载波,用于承载交互业务、全部物理层以及媒体接入控制层的控制信息, 主要用于控制 AMS的操作, 例如网络接入。 每个 AMS可以有一个或多个辅 载波, 也可以没有辅载波, 辅载波是通过 ABS特定的命令和规则为 AMS分 配的用于传输业务的载波。 辅载波上也可能发送一些支持多载波操作的控制 信令。 在 802.16e系统中, 由于信道衰落而导致月艮务质量 (Quality of Service , 简称为 QoS ) 下降时, MS将终止与当前服务基站的连接, 切换到相邻的其 他基站, 以获得更好的 QoS。 同时, 802.16系统还提供了空闲 (Idle )模式, Idle模式的目的在于减少 MS的能量消耗并降低对服务基站空中资源的使用。 当 MS进行切换、 或者是从空闲模式操作转换为正常操作模式时, 均需要在 目标基站上执行网络重进入。 在 802.16e的单载波系统中, 普通切换流程为: 终端发送切换请求消息, 服务基站发送切换命令消息进行响应,或者服务基站主动发送切换命令消息, 终端收到基站的切换命令消息后, 发送切换指示消息。 在预定时刻, 终端开 始在目标基站上执行网络重进入。 网络重进入的流程为: 在目标基站上进行 下行前导序列同步和上下行信息同步并进行测 巨, 目标基站发送测 巨响应消 息给终端, 终端根据目标基站的指令进行可选的能力协商和注册过程, 从而 完成在目标基站上的网络重进入。 在 802.16m多载波系统中, 支持多载波操作的终端进行上述过程时, 需 要与服务基站、 目标基站进行一系列的有关多载波属性的协商和交互。 为了 使终端在目标基站接入后可以使用辅载波, 需要在切换过程中为终端分配辅 载波, 但是目前尚未存在相关过程中为终端分配辅载波的方法。 发明内容 有鉴于此, 本发明提供了一种辅载波分配方法, 用以解决现有技术中在 多载波系统中无法在终端切换过程中为终端分配辅载波的问题。 根据本发明的一个方面, 提供了一种辅载波分配方法, 该方法用于在终 端从艮务基站向目标基站切换的过程中为终端分配辅载波。 才艮据本发明的辅载波分配方法包括: 在终端从服务基站向目标基站切换 的过程中, 服务基站向终端发送消息, 其中, 该消息中携带有一个或多个目 标基站为终端分配的辅载波的信息。 优选地, 上述消息包括: 切换命令消息或多载波响应消息。 根据本发明的另一个方面, 提供了另一种辅载波分配方法, 该方法用于 终端在目标基站执行网络重进入过程时为终端分配辅载波。 才艮据本发明的辅载波分配方法包括: 目标基站向终端发送消息, 其中, 该消息中携带有目标基站为终端分配的辅载波的信息。 优选地, 上述消息包括但不限于以下之一: 测距响应消息、 注册响应消 息、 多载波响应消息。 才艮据本发明的再一个方面, 提供了又一种辅载波分配方法, 该方法用于 终端在目标基站完成网络重进入后为终端分配辅载波。 才艮据本发明的辅载波分配方法包括: 目标基站向终端发送消息, 其中, 该消息中携带有目标基站为终端分配的辅载波的信息。 优选地, 上述消息包括: 多载波响应消息。 通过本发明的上述至少一个方案, 可以在终端从月艮务基站向目标基站切 换的过程中, 通过服务基站为终端发送目标基站为终端分配的辅载波, 也可 以在终端在目标基站的网络重进入的过程中、 或终端在目标基站完成网络重 进入过程后, 由目标基站为终端分配辅载波, 解决了现有技术中在多载波系 统中无法在终端切换时为终端分配辅载波的问题, 使得终端在接入目标基站 后, 可以使用辅载波传输业务, 提高了资源的利用率, 避免了后续数据传输 过程中再分配辅载波而带来的数据传输中断等问题。 本发明的其它特征和优点将在随后的说明书中阐述, 并且, 部分地从说 明书中变得显而易见, 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。 附图说明 附图用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与本 发明的实施例一起用于解释本发明, 并不构成对本发明的限制。 在附图中: 图 1为相关技术中多载波系统的架构示意图; 图 2为根据本发明实施例的终端从服务基站切换到目标基站的流程图; 图 3为才艮据本发明实施例方法一的流程图; 图 4为才艮据本发明实施例方法二的流程图; 图 5为 居本发明实施例方法三的流程图; 图 6为实施例一的流程图; 图 7为实施例二的流程图; 图 8为实施例三的流程图; 图 9为实施例四的 ¾ϊ程图; 图 10为实施例五的流程图; 图 11为实施例六的流程图。 具体实施方式 在多载波系统中, 为了使终端在接入目标基站后可以及时地釆用辅载波 传输业务和控制信令, 需要服务基站或者目标基站在切换过程中为该终端分 配辅载波。在本发明实施例中,可以在服务基站向终端发送切换命令消息时, 向终端发送服务基站推荐的一个或多个候选目标基站根据从服务基站获取的 终端的信息为终端分配的辅载波的信息; 或者, 在终端在目标基站的网络重 进入过程中或完成后, 由目标基站向终端分配辅载波。 在没有特别说明的情况下, 本发明实施例中所指的终端为支持多载波操 作的终端, 基站为支持多载波操作的基站, 优选地, 在本发明实施例中, 终 端为先进终端 ( AMS ), 基站为先进基站 ( ABS )。 在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。 以下结合附图对本发明的优选实施例进行说明, 应当理解, 此处所描述 的优选实施例仅用于说明和解释本发明, 并不用于限定本发明。如果不冲突, 本发明实施例及实施例中特征可以相互组合。 在说明本发明实施例之前, 首先对本发明实施例涉及多载波系统的终端 从月艮务基站切换到目标基站的流程进行描述。 图 2为根据本发明实施例的终端从服务基站向目标基站切换的流程图, 如图 2所示, 根据本发明实施例的终端从服务基站向目标基站切换主要包括 以下步 4聚: 步骤 201 , 支持多载波操作的终端执行切换之前, 终端从服务基站发送 的邻区广播消息中获得一个或多个邻区基站的多载波配置信息; 步骤 202, 由月艮务基站通过骨千网向一个或多个候选目标基站提供、 或 者由一个或多个候选目标基站通过骨千网向月艮务基站或其他的网络实体请求 该终端的信息, 服务基站将终端信息通过骨千网络发送给一个或多个候选目 标基站, 其中, 终端信息包括服务基站在与终端进行多载波能力交互时获得 的该终端的多载波能力信息; 步骤 203 , 终端在其主载波发送请求消息给艮务基站, 请求进行切换; 在具体实施过程中, 该步骤为可选, 在由终端主动发起切换的情况下, 需要执行该步骤, 由服务基站主动发起切换的情况下, 不需要执行该步骤。 具体地, 终端可以根据服务基站发送的邻区广播消息中的一个或多个邻 区基站的多载波配置信息选择一个或多个其希望切换到的邻区基站作为候选 目标基站, 进一步地, 可以在选择的一个或多个候选目标基站下选择一个或 多个其希望切换到的载波作为候选目标载波; 终端将自己选择的一个或多个 候选目标基站的信息以及各个候选目标基站下的候选目标载波的信息携带在 上述请求消息中发送给服务基站。 具体地, 在该请求消息中携带的各个候选 目标载波的信息可以包括: 各个候选目标载波的物理频点信息和 /或各个候选 目标载波的物理载波编号, 即可以釆用物理频点信息和 /或物理载波编号标识 各个候选目标载波。 步骤 204 , 服务基站在终端的主载波发送相应的切换命令消息; 具体地, 月艮务基站在接收到上述请求消息后、 或者主动地向终端发送切 换命令消息, 该切换命令消息中至少携带以下信息: (1)服务基站从上述一个 或多个邻区基站中推荐给终端的一个或多个候选目标基站的信息以及各个候 选目标基站下的一个或多个候选目标载波的信息, 其中, 各个候选目标载波 的信息可以包括: 各个候选目标载波的物理频点信息和 /或各个候选目标载波 的物理载波编号, 即可以釆用物理频点信息和 /或物理载波编号来标识各个候 选载波,; (2)重进入模式标识, 该标识用于指示网络重进入过程中终端是否 与服务基站保持连接; (3)在各个候选目标载波上的动作时间, 该时间指示终 端在该目标载波上发起网络重进入的具体时刻; (4)各个候选目标载波可提供 的业务等级指示。 步骤 205 , 终端在主载波上向 艮务基站发送切换指示消息, 发起切换; 在具体实施过程中,终端可以从上述请求消息和 /或切换命令消息中携带 的一个或多个候选目标基站及各个候选目标基站下的一个或多个候选目标载 波中选择一个基站作为切换的目标基站, 同时, 选择该目标基站的一个或多 个候选目标载波中的一个载波作为切换的目标载波, 然后发送上述切换指示 消息。 具体地, 终端发送的上述切换指示消息中包括以下信息至少之一: 开始 进行切换的动作码字、 将要切换到的目标基站及目标载波的信息、 终端用于 执行切换的射频通道所对应的载波信息, 具体地, 该载波信息可以是物理频 点信息和 /或物理载波编号; 步骤 206, 终端在目标载波上进行测距, 目标基站发送测距响应消息给 终端; 具体地, 该测距响应消息中包括以下信息至少之一: 重接入中基本能力 协商消息交互是否可以省略的指示信息、 注册消息交互是否可以省略的指示 信息、 多载波能力交互是否可以省略的指示消息、 目标基站是否发送主动的 基本能力协商响应消息的指示信息、 目标基站是否发送主动的注册响应消息 的指示信息; 另外, 该测距响应消息中还可以包括: 基本能力协商消息编码、 注册消 息编码; 步骤 207, 终端接收目标基站发送的上述测距响应消息, -据该测距响 应消息中携带的指示, 进行可选的能力协商和注册过程, 完成在目标基站上 的网络重进入过程。 基于上述终端从服务基站切换到目标基站的流程, 本发明实施例提供了 三种辅载波分配方法, 用于在终端从月艮务基站切换到目标基站的过程中为终 端分配辅载波。 以下分别对这三种方法进行描述。 方法一: 由月良务基站进行辅载波分配 在该方法中, 服务基站与上述一个或多个目标基站通过骨千网交互, 为 终端获取在目标基站上分配的辅载波。 月艮务基站在向终端发送的消息中携带 目标基站为终端分配的辅载波的信息。 在具体实施过程中, 服务基站可以主 动发送该消息(即由服务基站发起切换),也可以在接收到终端发送的请求消 息后发送该消息 (即由终端发起切换)。 图 3为才艮据本发明实施例方法一的流程图, 如图 3所示, 在本方法中, 由服务基站为终端分配辅载波主要包括以下步骤: 步骤 301: 终端的一个或多个候选目标基站才艮据上述步 4聚 202 中所述的 方法获取的该终端的信息为该终端分配一个或多个辅载波, 并将该一个或多 个辅载波的信息发送给服务基站; 步骤 303: 服务基站向终端发送消息, 该消息中携带有服务基站推荐的 一个或多个候选目标基站为终端分配的一个或多个辅载波的信息, 在具体实 施过程中, 该消息中携带的辅载波的信息包括但不限于以下之一或其任意组 合: 辅载波的物理频点信息、 辅载波的物理载波编号、 候选目标基站为辅载 波分配的逻辑载波编号, 即可以釆用物理频点信息或者物理载波编号对各个 辅载波进行标识, 同时为各个辅载波分配逻辑载波编号。 终端从该一个或多个候选目标基站中选择一个基站作为切换的目标基 站, 同时, 选择该目标基站的一个或多个候选目标载波中的一个载波作为切 换的目标载波。 在网络重进入前, 终端已经从月艮务基站获得该目标基站为该 终端分配的辅载波的信息, 切换时, 终端可以在目标基站上的目标载波上完 成网络重进入, 并激活已分配的辅载波。 在具体实施过程中 ,服务基站可以在上述消息中设置一个激活时间参数, 如果该参数取值为零, 表示在网络接入完成后立即激活分配的辅载波, 参数 不为零, 则在该激活时间到来时激活辅载波; 如果服务基站不设置激活时间 参数, 终端可以认为在网络接入完成后立即激活分配的辅载波。 在具体实施过程中, 携带为终端所分配的辅载波的信息的消息包括: 上 述流程的步骤 204中的切换命令消息或多载波响应消息, 或其他与多载波相 关的多载波消息。 如果在上述步骤 201中, 服务基站发送的邻区广播消息中仅包括一个或 多个邻区基站的全配置载波的配置信息或者终端未从邻区广播消息中获得邻 区基站的多载波配置信息, 则在目标基站上激活辅载波前, 该方法还包括: 终端在目标基站进行网络重进入时或完成网络重进入后, 在目标基站上获取 广播的多载波配置信息, 或者釆用单播的请求消息向目标基站请求完整的多 载波配置信息, 即终端向目标基站单播发送请求消息, 请求目标基站向终端 发送该目标基站的完整的多载波配置信息,目标基站在接收到该请求消息时, 向该终端返回该目标基站的所有多载波的配置信息。 方法二: 由目标基站在网络重进入过程中进行辅载波分配 在该方法中, 由目标基站在网络重进入过程中为终端分配辅载波。 在本 发明实施例中, 网络重进入过程可以为终端从服务基站向目标基站切换过程 中的网络重进入过程(即上述步骤 205 -步骤 207的过程;), 也可以为终端从 空闲模式切换到正常工作模式的网络重进入过程, 在本实施例中, 目标基站 即为终端最后确定进入的目标基站。 图 4为根据本发明实施例方法二的流程图, 如图 4所示, 目标基站在网 络重进入过程中为终端分配辅载波主要包括以下步骤: 步骤 401 : 终端向服务基站发送切换指示消息时, 在切换指示消息中携 带指示目标基站在网络重进入过程中为终端分配辅载波的指示信息; 步骤 403: 终端在目标基站的网络重进入过程中, 目标基站向该终端发 送消息, 其中, 该消息中携带有目标基站为该终端分配的辅载波的信息, 具 体地, 该消息中携带的辅载波的信息包括以下之一或其任意组合: 辅载波的 物理频点信息、 辅载波的物理载波编号、 候选目标基站为辅载波分配的逻辑 载波编号, 即可以釆用物理频点信息或者物理载波编号对各个辅载波进行标 识, 同时为各个辅载波分配逻辑载波编号。 在具体实施过程中, 终端在目标基站执行网络重进入过程之前, 服务基 站与目标基站通过骨千网络进行交互, 服务基站将终端的信息 (包括终端的 多载波能力信息) 发送给目标基站, 具体如上述步骤 202所述。 目标基站在 获取终端的信息后, 居该终端的信息, 为终端分配辅载波, 并在上述消息 中携带为该终端分配的辅载波的信息。 在具体实施过程中, 如果是在终端从服务基站向目标基站切换的过程中 执行本发明实施例提供的方法, 则在上述步骤 205中, 终端向服务基站发送 切换指示消息时, 可以在切换指示消息中携带指示目标基站在网络重进入过 程中为终端分配辅载波的指示信息, 服务基站在接收到该指示信息后, 将该 指示信息发送给目标基站, 根据该指示信息, 目标基站在网络重进入过程中 为终端分配辅载波, 并发送上述消息; 或者, 目标基站也可以在网络重进入 过程中主动为终端分配辅载波, 即上述步骤 401为可选。 并且, 如果是在终 端从空闲模式切换到正常工作模式的网络重进入过程中实施本发明实施例提 供的方法二, 则也不需要执行步骤 401。 在具体实施过程中, 上述消息包括但不限于: 测距响应消息、 或, 主动 的注册响应消息、 多载波响应消息、 或者其他与多载波相关的多载波消息。 具体地, 如果目标基站在测距响应消息中携带所分配的辅载波的信息, 则目标基站可以通过以下方式之一将辅载波的信息携带在测距响应消息中:
( 1 ) 将辅载波的信息作为测距响应消息的参数项;
( 2 ) 将辅载波的信息作为测距响应消息中的基本能力协商消息编码的 参数项;
( 3 ) 将辅载波的信息测距响应消息中的注册消息编码的参数项。 在具体实施过程, 在网络重进入过程中, 目标基站为终端分配辅载波的 同时 (即目标基站向终端发送上述消息时) 可以设置一个激活时间参数, 如 果该参数取值为零,表示在网络重进入完成后立即激活辅载波, 参数不为零, 则在该激活时间到来时激活辅载波; 如果目标基站不设置激活时间参数, 终 端可以认为在网络重进入完成后立即激活分配的辅载波。 具体地, 终端从服务基站的邻区广播消息中仅获取了一个或多个邻区基 站的全配置载波的配置信息, 或者终端未从邻区广播消息中获得邻区基站的 多载波配置信息, 则在目标基站上激活辅载波前, 该方法还包括: 终端在目 标基站进行网络重进入时或者在重进入完成后在目标基站上获取该目标基站 广播的多载波配置信息, 或者该终端釆用单播的请求消息向目标基站请求完 整的多载波配置信息, 具体与上述方法一相似。 方法三: 由目标基站在网络重进入过程后进行辅载波分配 在该方法中, 目标基站在终端在该目标基站的网络重进入过程后 (即上 述步 4聚 207 之后), 为终端分配辅载波, 此时, 目标基站已经成为终端新的 服务基站。 图 5为才艮据本发明实施例方法三的辅载波分配方法的流程图, 如图 5所 示, 在该方法中, 目标基站在终端在该目标基站的网络重进入过程后为终端 分配辅载波主要包括以下步骤: 步骤 501 : 终端在网络重进入过程完成后, 向目标基站发送请求消息, 请求目标基站分配辅载波; 步骤 503: 目标基站向终端发送响应消息, 该响应消息中携带有为该终 端分配的一个或多个辅载波的信息, 具体地, 该响应消息中携带的辅载波的 信息包括以下之一或其任意组合: 辅载波的物理频点信息、 辅载波的物理载 波编号、 候选目标基站为辅载波分配的逻辑载波编号, 即可以釆用物理频点 信息或者物理载波编号对各个辅载波进行标识, 同时为各个辅载波分配逻辑 载波编号。 在具体实施过程中, 目标基站可以是在接收终端发送的请求消息时, 响 应于该请求消息, 向终端发送上述响应消息, 为终端分配一个或多个辅载波。 或者, 当前月艮务基站 (即目标基站) 主动发送上述响应消息为终端分配辅载 波, 即上述步 4聚 501为可选。 在具体实施过程中 , 上述请求消 息可以是多 载波请求消息 ( AAI-MC-REQ )或者其他与多载波相关的多载波消息, 上述响应消息可以 是多载波响应消息 ( AAI-MC-RSP ) 或者其他与多载波相关的多载波消息。 在具体实施过程中, 终端在目标基站执行网络重进入过程之前, 服务基 站与目标基站通过骨千网络进行交互, 服务基站将终端的信息 (包括终端的 多载波能力信息) 发送给目标基站, 具体如上述步骤 204所述。 目标基站在 获取终端的信息后, 居该终端的信息, 为终端分配辅载波, 并在上述消息 中携带为该终端分配的辅载波的信息。 在具体实施过程中, 目标基站为终端分配辅载波的同时可以设置一个激 活时间参数, 如果该参数取值为零, 表示在辅载波分配时立即激活辅载波, 参数不为零, 则在该激活时间到来时激活辅载波; 如果目标基站不设置激活 时间参数, 终端可以认为在辅载波分配时立即激活分配的辅载波。 具体地, 与上述方法一和方法二相似, 如果在上述步骤 201中, 终端从 邻区广播消息中仅获取了一个或多个邻区基站的全配置载波的配置信息, 或 者终端未从邻区广播消息中获得邻区基站的多载波配置信息, 则在目标基站 上激活辅载波前, 该方法还包括: 终端在目标基站上获取目标基站广播的多 载波配置信息, 或者, 终端发送单播的 AAI-MC-REQ 消息请求目标基站的 多载波配置信息, 目标基站接收到该 AAI-MC-REQ 消息后, 向终端返回 AAI-MC-RSP消息, 并在该 MC-RSP消息中携带完整的多载波配置信息。 为进一步理解本发明实施例提供的上述技术方案, 下面通过具体实施例 对本发明实施例提供的技术方案进行说明。 实施例一 在本实施例中釆用上述方法一为终端分配 i 载波, 图 6为本实施例的流 程图, 如图 6所示, 在本实施例中, 服务基站为终端分配辅载波主要包括以 下步骤: 步骤 601 , 终端向服务基站发送切换请求消息; 步骤 603 , 服务基站接收上述切换请求消息, 向终端发送切换命令消息, 其中, 该切换命令消息中携带有: 服务基站为终端推荐的一个或多个候选目 标基站根据从服务基站或其他网络实体获得的终端的信息为该终端分配的一 个或多个辅载波的信息; 辅载波激活时间参数, 如果该参数取值为零, 表示 网络重接入完成后立即激活辅载波。 具体地, 可以设置定时器, 定时器的时 长即为该时间参数, 在发送切换命令消息后, 启动该定时器, 在该定时器到 达时, 激活为该终端分配的辅载波; 步骤 605 , 终端向服务基站发送切换指示信息, 其中, 该切换指示信息 中携带有将要切换到的目标基站和目标载波、终端将要使用的射频通道信息、 或者射频通道对应的载波信息; 步骤 607, 终端在目标载波上执行网络重进入过程, 首先进行测距, 由 于目标基站已经从骨千网获得了终端的信息, 因此, 目标基站可以根据终端 的信息构造基本能力协商消息编码、 注册消息编码并将其携带在测距响应消 息中发送给终端; 步骤 609, 终端成功接收到目标基站发送的带有能力协商和注册消息编 码的测距响应消息, 则网络重进入完成, 在该载波上可以建立数据连接, 该 载波成为终端新的主载波, 同时, 按照激活时间参数的设置激活之前由服务 基站所分配的辅载波。 实施例二 在本实施例中, 釆用上述方法二为终端分配辅载波, 并且, 目标基站根 据终端发送的指示, 在测距响应消息中携带为终端分配的辅载波。 图 7为本实施例的流程图, 如图 7所示, 在本实施例中, 目标基站为终 端分配辅载波主要包括以下步骤: 步骤 701 , 终端向服务基站发送切换请求消息; 步骤 703 , 服务基站接收上述切换请求消息, 向终端发送切换命令消息; 步骤 705 , 终端向服务基站发送切换指示消息, 其中, 该切换指示消息 中携带有将要切换到的目标基站和目标载波、终端将要使用的射频通道信息、 或者射频通道对应的载波信息, 并且, 该切换指示消息中还携带有指示希望 目标基站在网络重进入过程中为该终端分配辅载波的指示信息; 步骤 707, 终端在目标载波上执行网络重进入过程, 首先进行测距, 由 于目标基站已经从骨千网获得了终端的信息, 因此, 目标基站可以根据该终 端的信息构造基本能力协商消息编码、 注册消息编码并将其携带在测距响应 消息中发送给终端, 并且, 由于终端在上述切换指示消息中指示希望目标基 站在网络重进入过程中分配辅载波, 因此, 目标基站在该测距响应消息中还 携带有分配给该终端的辅载波的信息。 本实施例中, 目标基站设置辅载波激 活时间参数, 该参数取值为零, 表示在网络重进入完成后立即激活辅载波; 步骤 709, 终端成功接收到目标基站发送的带有能力协商和注册消息编 码的测距响应消息则表示网络重进入完成, 在该载波上可以建立数据连接, 该载波成为终端新的主载波, 同时, 按照激活时间参数的设置激活由目标基 站所分配的辅载波。 实施例三 在本实施例中, 釆用上述方法二为终端分配辅载波, 并且, 目标基站根 据终端发送的指示, 在注册响应消息中携带为终端分配的辅载波。 图 8为本实施例的流程图, 如图 8所示, 在本实施例中, 目标基站为终 端分配辅载波主要包括以下步骤: 步骤 801 , 终端向服务基站发送切换请求消息; 步骤 803 , 服务基站向终端发送切换命令消息; 步骤 805 , 终端向服务基站发送切换指示消息, 其中, 该切换指示消息 中携带有将要切换到的目标基站和目标载波、终端将要使用的射频通道信息、 或者射频通道对应的载波信息, 并且, 该切换指示消息中还携带有指示希望 目标基站在网络重进入过程中为其分配辅载波的指示信息; 步骤 807, 终端在目标载波上执行网络重进入过程, 首先进行测距, 由 于目标基站已经从骨千网获得了终端的信息, 目标基站可以据此构造主动的 基本能力协商响应消息、 主动的注册响应消息发送给终端, 并且, 由于终端 在上述切换指示消息中指示希望目标基站在网络重进入过程中分配辅载波, 因此, 目标基站在注册响应消息中携带分配给终端的辅载波的信息。 本实施 例中, 目标基站设置了不为零的激活时间参数, 表示在参数指定时刻激活辅 载波, 具体与实施例二相似; 步骤 809, 终端成功收到目标基站发送的注册响应消息则表示网络重进 入完成, 在该载波上可以建立数据连接, 该载波成为终端新的主载波, 同时, 按照激活时间参数的设置激活由目标基站所分配的辅载波。 实施例四 在本实施例中, 釆用上述方法二为终端分配辅载波, 并且, 目标基站主 动在测距响应消息中携带为终端分配的辅载波。 图 9为本实施例的流程图, 如图 9所示, 在本实施例中, 目标基站为终 端分配辅载波主要包括以下步骤: 步骤 901 , 终端发送切换请求消息给月艮务基站; 步骤 903 , 服务基站发送切换命令消息给终端; 步骤 905 , 终端发送切换指示信息给服务基站, 其中携带将要切换到的 目标基站和目标载波, 终端将要使用的射频通道信息、 或者射频通道对应的 载波信息; 步骤 907, 终端在目标载波上执行网络重进入过程, 首先进行测距, 由 于目标基站已经从骨千网获得了终端的信息, 目标基站可以据此构造基本能 力协商消息编码、 注册消息编码并将其携带在测距响应消息中发送给终端, 目标基站可以主动为终端进行辅载波分配, 在测距响应消息中携带所分配的 辅载波的信息。 本实施例中, 目标基站设置载波激活时间参数, 此时该参数 取值为不为零, 表示在指定时间激活辅载波。 步骤 909, 终端成功收到目标基站发送的带有注册消息编码的测 巨响应 消息则表示网络重进入完成, 在该载波上可以建立数据连接, 该载波成为终 端新的主载波, 同时, 按照激活时间参数的设置激活由目标基站所分配的辅 载波。 实施例五 在本实施例中, 釆用上述方法二为终端分配辅载波, 并且, 目标基站主 动在注册响应消息中携带为终端分配的辅载波。 图 10为本实施例的流程图, 如图 10所示, 在本实施例中, 目标基站为 终端分配辅载波主要包括以下步 4聚: 步骤 101 , 终端发送切换请求消息给月艮务基站; 步骤 103 , 服务基站发送切换命令消息给终端; 步骤 105 , 终端发送切换指示信息给服务基站, 其中携带将要切换到的 目标基站和目标载波, 终端将要使用的射频通道信息、 或者射频通道对应的 载波信息; 步骤 107, 终端在目标载波上执行网络重进入过程, 首先进行测距, 由 于目标基站已经从骨千网获得了终端的信息, 目标基站可以据此构造主动的 基本能力协商响应消息、 主动的注册响应消息发送给终端, 同时, 目标基站 可以主动地为终端分配辅载波, 在注册响应消息中携带辅载波列表。 本实施 例中, 目标基站设置的激活时间参数取值为零, 表示在网络重进入完成后立 即激活辅载波; 步骤 109, 终端成功收到目标基站发送的注册响应消息则表示网络重进 入完成, 在该载波上可以建立数据连接, 该载波成为终端新的主载波, 同时, 按照激活时间参数的设置激活由目标基站所分配的辅载波。 实施例六 在本实施例中, 釆用上述方法三为终端分配辅载波, 并且, 由终端请求 目标基站为终端分配辅载波。 图 11为本实施例的流程图, 如图 11所示, 在本实施例中, 目标基站为 终端分配辅载波主要包括以下步 4聚: 步骤 1101 , 终端发送切换请求消息给月艮务基站; 步骤 1103 , 服务基站发送切换命令消息给终端; 步骤 1105 , 终端发送切换指示信息给服务基站, 其中携带将要切换到的 目标基站和目标载波, 终端将要使用的射频通道信息、 或者射频通道对应的 载波信息; 步骤 1107, 终端在目标载波上执行网络重进入过程, 首先进行测距, 由 于目标基站已经从骨千网获得了终端的信息, 目标基站可以据此构造主动的 基本能力协商响应消息、 主动的注册响应消息发送给终端; 步骤 1109, 终端成功收到目标基站发送的注册响应消息则表示网络重进 入完成, 在该载波上可以建立数据连接, 该载波成为终端新的主载波; 步骤 1111 : 终端发送多载波请求消息 ( AAI-MC-REQ )请求当前服务基 站分配辅载波; 步骤 1113: 当前月艮务基站收到终端的请求, 响应于该请求, 釆用多载波 响应 (AAI-MC-RSP ) 消息为终端分配一个或多个辅载波; 本实施例中, 目 标基站设置激活时间参数, 参数取值为零, 表示在分配的同时立即激活辅载 波; 步骤 1115 : 分配的辅载波被激活, 终端与目标基站之间的辅载波建立连 接。 综上所述, 借助于本发明的技术方案, 通过本发明的辅载波分配方法, 使得终端向目标基站切换、 或者网络重进入过程中即可获得基站分配的一个 或多个辅载波, 简化了系统操作, 同时避免了后续数据传输过程中再分配辅 载波而带来的数据传输中断等问题。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种辅载波分配方法, 用于在终端从月艮务基站向目标基站切换的过程中 为所述终端分配辅载波, 其特征在于, 所述方法包括:
所述服务基站向所述终端发送消息, 其中, 所述消息中携带有一个 或多个目标基站为所述终端分配的辅载波的信息。
2. 根据权利要求 1所述的方法, 其特征在于, 所述一个或多个目标基站为 所述服务基站为所述终端推荐的一个或多个候选目标基站。
3. 根据权利要求 2所述的方法, 其特征在于, 所述消息中还携带有所述一 个或多个目标基站的信息以及所述一个或多个目标基站下的一个或多个 目标载波的信息。
4. 才艮据权利要求 3所述的方法, 其特征在于, 所述一个或多个目标载波为 所述艮务基站为所述终端选择的候选目标载波。
5. 根据权利要求 3所述的方法, 其特征在于, 在所述服务基站向所述终端 发送所述消息之后, 所述方法还包括:
所述终端接收所述消息, 从所述消息中获取所述一个或多个目标基 站为所述终端分配的辅载波的信息。
6. 根据权利要求 2所述的方法, 其特征在于, 所述消息中还携带有所述一 个或多个目标基站为所述终端分配的辅载波的激活时间。
7. 根据权利要求 2所述的方法, 其特征在于, 所述辅载波的信息包括以下 之一或其任意组合: 辅载波的物理频点信息、 辅载波的物理载波编号、 候选目标基站为辅载波分配的逻辑载波编号。
8. 根据权利要求 2至 7中任一项所述的方法, 其特征在于, 在所述服务基 站发送所述消息之前, 所述方法还包括:
所述服务基站接收所述终端发送的请求消息, 其中, 所述请求消息 中携带有所述终端选择一个或多个候选目标基站的信息和 /或所述终端 选择的该一个或多个候选目标基站下的一个或多个候选目标载波的信 息, 其中, 该一个或多个候选目标载波的信息包括: 各个候选目标载波 的物理频点信息和 /或各个目标载波的物理载波编号。
9. 居权利要求 8所述的方法, 其特征在于, 在所述终端接收到所述艮务 基站发送的所述消息之后, 所述方法还包括:
所述终端向所述服务基站发送指示消息以发起切换, 其中, 所述指 示消息携带有所述终端确定切换到的目标基站的信息及所述终端确定切 换到的目标载波的信息, 该目标基站为所述服务基站为所述终端选择的 一个或多个侯选目标基站和 /或所述终端选择的一个或多个候选目标基 站中的一个候选基站, 该目标载波为该目标基站下所述服务基站为所述 终端选择的一个或多个候选目标载波和 /或所述终端选择的一个或多个 候选目标载波中的一个候选目标载波。
10. 根据权利要求 9所述的方法, 其特征在于, 在所述服务基站发送所述消 息之前, 所述方法还包括:
所述终端接收来自所述服务基站的邻区广播消息, 获取所述邻区广 播消息中携带的一个或多个邻区基站的多载波配置信息。
11. 根据权利要求 10所述的方法, 其特征在于, 如果所述邻区广播消息中仅 携带有所述一个或多个邻区基站的全配置载波的配置信息, 或者终端未 接收到邻区基站的多载波配置信息, 则在激活所述目标基站为所述终端 分配的辅载波之前, 所述方法还包括:
所述终端在所述目标基站进行网络重进入时获取所述目标基站广播 的多载波配置信息; 或者
所述终端在网络重进入完成后向所述目标基站发送请求消息, 请求 所述目标基站的所有多载波配置信息。
12. 根据权利要求 2至 7中任一项所述的方法, 其特征在于, 在所述服务基 站向所述终端发送所述消息之前, 所述方法还包括:
所述服务基站与所述一个或多个候选目标基站通过骨千网络进行交 互, 将所述终端的信息发送给所述一个或多个候选目标基站, 其中, 所 述终端的信息包括: 所述终端的多载波能力信息;
所述一个或多个候选目标基站 -据获取所述终端的信息, 为所述终 端分配辅载波,并将所述辅载波的信息通过骨千网发送给所述艮务基站。
13. 根据权利要求 1所述的方法, 所述消息包括: 切换命令消息或多载波响 应消息。
14. 一种辅载波分配方法, 用于终端在目标基站执行网络重进入过程时为所 述终端分配 载波, 其特征在于, 所述方法包括:
所述目标基站向所述终端发送消息, 其中, 所述消息中携带有所述 目标基站为所述终端分配的辅载波的信息。
15. 根据权利要求 14所述的方法, 其特征在于, 所述消息包括以下之一: 测 距响应消息、 注册响应消息、 多载波响应消息。
16. 根据权利要求 15所述的方法, 其特征在于, 如果所述消息为测距响应消 息, 则所述辅载波的信息可以釆用以下方式之一携带在所述测 巨响应消 息中:
所述测距响应消息的参数项;
所述测距响应消息中的基本能力协商消息编码的参数项; 所述测距响应消息中的注册编码的参数项。
17. 居权利要求 14所述的方法, 其特征在于, 在所述目标基站向所述终端 发送所述消息之后, 所述方法还包括:
所述终端接收所述消息, 激活所述目标基站为所述终端分配的辅载 波; 或
所述终端接收所述消息, 获取所述消息中携带的激活时间, 在所述 激活时间到达时, 激活所述目标基站为所述终端分配的辅载波。
18. 根据权利要求 17所述的方法, 其特征在于,
所述终端在目标基站执行网络重进入过程之前, 所述方法还包括: 所述终端接收来自月艮务基站的邻区广播消息, 获取所述邻区广播消 息中携带的一个或多个邻区基站的多载波配置信息;
如果所述邻区广播消息中仅携带有所述一个或多个邻区基站的全配 置载波的配置信息, 或者终端未接收到邻区基站的多载波配置信息, 则 在激活所述目标基站为所述终端分配的辅载波之前, 所述方法还包括: 所述终端在所述目标基站进行网络重进入时, 获取所述目标基站广 播的多载波配置信息; 或者
所述终端在网络重进入完成后向所述目标基站发送请求消息, 请求 所述目标基站的所有多载波配置信息。
19. 根据权利要求 15至 18中任一项所述的方法, 其特征在于, 所述消息中 携带的所述辅载波的信息包括以下之一或其任意组合: 辅载波的物理频 点信息、 辅载波的物理载波编号、 目标基站为辅载波分配的逻辑载波编 号。
20. 根据权利要求 15至 18中任一项所述的方法, 其特征在于, 所述网络重 进入过程包括: 所述终端从服务基站向所述目标基站切换的过程中的网 络重进入过程, 或所述终端从空闲模式切换到正常操作模式的网络重进 入过程。
21. 居权利要求 20所述的方法, 其特征在于, 在所述网络重进入过程为所 述终端从服务基站向所述目标基站切换的过程中的网络重进入过程的情 况下, 在所述目标基站向所述终端发送所述消息之前, 所述方法还包括: 所述终端向所述服务基站发送切换指示消息, 其中, 所述切换指示 消息中携带有指示所述目标基站在网络重进入的过程中为所述终端分配 辅载波的指示信息;
所述目标基站才艮据指示信息在网络进入过程中为所述终端分配辅载 波。
22. 居权利要求 15至 18中任一项所述的方法, 其特征在于, 所述终端在 所述目标基站执行网络重进入过程之前, 所述方法还包括:
服务基站与所述目标基站通过骨千网络进行交互, 将所述终端的信 息发送给所述目标基站, 其中, 所述终端的信息包括: 所述终端的多载 波能力信息;
所述目标基站 居获取所述终端的信息, 为所述终端分配辅载波。
23. 一种辅载波分配方法, 用于终端在目标基站完成网络重进入后为所述终 端分配辅载波, 其特征在于, 所述方法包括: 所述目标基站向所述终端发送消息, 其中, 所述消息中携带有所述 目标基站为所述终端分配的辅载波的信息。
24. 根据权利要求 23所述的方法, 其特征在于, 所述消息包括: 多载波响应 消息。
25. 根据权利要求 23所述的方法, 其特征在于, 所述消息中携带的所述辅载 波的信息包括以下之一或其任意组合: 辅载波的物理频点信息、 辅载波 的物理载波编号、 目标基站为辅载波分配的逻辑载波编号。
26. 居权利要求 23所述的方法, 其特征在于, 所述目标基站向所述终端发 送所述消息之后, 所述方法还包括:
所述终端接收所述消息, 激活所述目标基站为所述终端分配的所述 辅载波; 或
所述终端接收所述消息, 获取所述消息中携带的激活时间, 在所述 激活时间到达时, 激活所述目标基站为所述终端分配的所述辅载波。
27. 根据权利要求 26所述的方法, 其特征在于,
所述终端在所述目标基站完成网络重进入之前, 所述方法还包括: 所述终端接收来自月艮务基站的邻区广播消息, 获取所述邻区广播消 息中携带的一个或多个邻区基站的多载波配置信息;
如果所述邻区广播消息中仅携带有所述一个或多个邻区基站的全配 置载波的配置信息,或者所述终端未接收到邻区基站的多载波配置信息, 则在激活所述目标基站为所述终端分配的辅载波之前,所述方法还包括: 所述终端在所述目标基站进行网络重进入时, 获取所述目标基站广 播的多载波配置信息; 或者
所述终端在重进入完成后向所述目标基站发送请求消息, 请求所述 目标基站的所有多载波的配置信息。
28. 根据权利要求 23至 27中任一项所述的方法, 其特征在于, 在所述目标 基站向所述终端发送所述消息之前, 所述方法还包括:
所述终端向所述目标基站发送请求消息, 请求所述目标基站为所述 终端分配辅载波。
29. 根据权利要求 28所述的方法, 其特征在于, 所述请求消息包括: 多载波 请求消息。
30. 根据权利要求 23至 27中任一项所述的方法, 其特征在于, 所述终端在 所述目标基站完成网络重进入之前, 所述方法还包括:
服务基站与所述目标基站通过骨千网络进行交互, 将所述终端的信 息发送给所述目标基站, 其中, 所述终端的信息包括: 所述终端的多载 波能力信息;
所述目标基站 居获取所述终端的信息, 为所述终端分配辅载波。
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