WO2010083690A1 - 基于多载波系统的扫描请求发送方法 - Google Patents

基于多载波系统的扫描请求发送方法 Download PDF

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Publication number
WO2010083690A1
WO2010083690A1 PCT/CN2009/074325 CN2009074325W WO2010083690A1 WO 2010083690 A1 WO2010083690 A1 WO 2010083690A1 CN 2009074325 W CN2009074325 W CN 2009074325W WO 2010083690 A1 WO2010083690 A1 WO 2010083690A1
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WIPO (PCT)
Prior art keywords
base station
carrier
scan
terminal
index
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PCT/CN2009/074325
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English (en)
French (fr)
Inventor
沈晓芹
吴昊
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
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
Priority to US13/145,776 priority Critical patent/US20120021794A1/en
Publication of WO2010083690A1 publication Critical patent/WO2010083690A1/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
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085Hand-off measurements

Definitions

  • the present invention relates to the field of communications, and in particular to a method for transmitting a scan request based on a multi-carrier system.
  • the base station can configure multiple carriers, and these carriers can be divided into two types: one is a fully configured carrier, and the other is a partially configured carrier.
  • the fully configured carrier includes all necessary system side information such as a synchronization channel and a control channel; the partially configured carrier may include only a data transmission channel or only some necessary control messages, and partially configured carriers are compared with the fully configured carrier.
  • the sync channel may not be included.
  • the carrier can be divided into a primary carrier and a secondary carrier.
  • the primary carrier must be a fully configured carrier, which is mainly used for control messages and/or data interaction between the base station and the terminal, and can also be used for service processing, and physical (Physics, PHY) control information or media connection.
  • each terminal has one and only one primary carrier in one cell.
  • the secondary carrier may be a fully configured carrier or a partially configured carrier, and the secondary carrier is an additional carrier for the terminal to transmit services, and is mainly used for data interaction.
  • the control signaling supporting multi-carrier operation may also be included on the secondary carrier.
  • a terminal may have multiple secondary carriers or no secondary carriers.
  • the terminal In the mobile communication system, when the terminal moves to the edge of the base station, if the original monthly base station signal condition drops and the service cannot be continued to be provided to the terminal, the terminal needs to switch to another base station to maintain service continuity. It is an inter-base station handover.
  • the carrier monthly carrier
  • the quality of service Quality of Service
  • the service carrier signal is lowered.
  • the strength needs to be searched the terminal needs to search for a carrier with a better strength, and the terminal can switch to another carrier for data transmission in the base station.
  • the base station broadcasts the information of the neighboring cell (the cell adjacent to the current serving cell) through the broadcast information to support the scanning of the neighboring cell by the terminal, so that the terminal can measure the signal quality of the neighboring cell, and the broadcast information can be Provide information such as the base station identity of the neighboring cell.
  • the base station broadcasts multi-carrier information of the serving base station and its neighboring base stations through broadcast information.
  • the service carrier cannot provide good radio conditions for the terminal.
  • the terminal does not send a corresponding scheme of the scan request to the base station to request to scan the carrier of the base station.
  • the present invention has been made in view of the problem of a corresponding scheme in which a terminal does not transmit a multi-carrier scan request to a base station in a multi-carrier system, and it is a primary object of the present invention to provide an improved multi-carrier based system.
  • the scan request transmission scheme solves the above problems in the related art.
  • a scan request transmission method based on a multi-carrier system is provided.
  • the method for transmitting a scan request based on the multi-carrier system includes: the terminal acquires multi-carrier information of the serving base station sent by the serving base station; and when the carrier switching in the base station is required, the terminal sends the scan request signaling to the monthly base station, Request to scan the carrier of the serving base station.
  • the requesting, by the terminal, the carrier of the scanning service base station includes: the terminal requests to scan all the carriers in the serving base station; or the terminal requests to scan the fully configured carrier in the serving base station.
  • the scan request signaling carries at least one of the following: scan duration, alternate interval, number of scans, index of recommended carriers, bitmap size of the carrier, bitmap index of the carrier, and index of the carrier.
  • a scan request transmission method based on a multi-carrier system includes: the terminal acquires multi-carrier information of a neighboring base station of the serving base station transmitted by the serving base station; and when the inter-base-station handover is required, the terminal sends the scan request signaling to the serving base station.
  • Requesting to scan the carrier of the neighbor base station includes: the terminal requests to scan all the carriers in the neighboring base station; or the terminal requests to scan the fully configured carrier in the neighboring base station.
  • the scan request signaling carries at least one of the following: scan duration, alternate interval, number of scans, index of recommended carriers, bitmap size of the carrier, bitmap index of the carrier, and index of the carrier.
  • a scan request transmission method based on a multi-carrier system includes: the terminal acquires multi-carrier information transmitted by the serving base station; when the handover is required, the terminal sends scan request signaling to the serving base station to request carrier scan.
  • the multi-carrier information sent by the terminal to the serving base station includes: the terminal acquiring the multi-carrier information of the serving base station sent by the serving base station; and/or, the terminal acquiring the multi-carrier information of the neighboring base station of the serving base station sent by the serving base station.
  • the terminal sends the scan request signaling, and the request for scanning the carrier includes: when the intra-base station carrier handover is required, the terminal sends the scan request signaling to the serving base station, requesting to scan the carrier of the serving base station; or, if needed When performing inter-base station handover, the terminal sends scan request signaling to the serving base station to request scanning of the carrier of the neighbor base station.
  • the carrier that requests to scan the serving base station includes: the terminal requests to scan all the carriers in the serving base station; or, the terminal requests to scan the fully configured carrier in the serving base station; and the request to scan the carrier of the neighboring base station includes: the terminal requests to scan all carriers in the neighboring base station Or, the terminal requests to scan the fully configured carrier in the neighbor base station.
  • the terminal sends the scan request signaling to the serving base station when the terminal needs to perform the handover, which solves the problem that the terminal cannot send the scan request to the base station in the related art, so that the terminal can send the scan request message according to the need. Order, switch with the request.
  • FIG. 1 is a flowchart of a method for transmitting a scan request based on a multi-carrier system according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of Example 1 according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for transmitting a scan request based on a multi-carrier system according to Embodiment 2 of the present invention
  • FIG. 1 is a flowchart of a method for transmitting a scan request based on a multi-carrier system according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of Example 1 according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for transmitting a scan request based on a multi-carrier system according to Embodiment 2 of the present invention
  • FIG. 1 is a flowchart of a method for transmitting a scan request based on a multi-carrier system according to Embodiment 1 of
  • FIG. 5 is a flowchart 3 according to an embodiment of the present invention.
  • Figure 6 is a flow chart of Example 4 according to an embodiment of the present invention;
  • Figure 7 is a flow chart of a method for transmitting a scan request based on a multi-carrier system according to Embodiment 3 of the method of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In the related art of a multi-carrier system, when a serving carrier cannot provide a good radio condition for a terminal, the terminal does not send a corresponding scheme for requesting scanning to the serving base station. To this end, the present invention provides an improved multi-carrier system-based scan request transmission scheme.
  • a multi-carrier monthly base station broadcasts all carrier information of the base station and the neighbor base station to the terminal, When the carrier cannot provide a good radio condition for the terminal, the terminal sends a scan request signaling to the base station to request scanning.
  • the base station described in the embodiment of the present invention is a serving base station that provides services for the terminal.
  • FIG. 1 is a flowchart of a multi-carrier system-based scanning request sending method according to Embodiment 1 of the present invention. As shown in FIG.
  • Step S102 The terminal acquires multi-carrier information of the local base station sent by the serving base station; specifically, the multi-carrier information may be used by the serving base station to pass the MOB SMC - ADV
  • the message is sent to the terminal, where the MOB_SMC-ADV message carries at least one of the following parameters: the number of carriers of the base station, the fully configured carrier indicator, the number of fully configured carriers of the base station, the carrier identifier, the carrier frequency, and the carrier bandwidth.
  • Step S104 When the terminal needs to perform intra-base station carrier switching, for example, when the service carrier cannot provide good radio conditions for the terminal, or the service carrier signal strength decreases, and the terminal needs to search for a carrier with better strength, the terminal will serve the terminal.
  • the base station sends the scan request signaling, and the requesting base station allocates a scan time, and the terminal can scan the carrier in the serving base station according to the multi-carrier information within the scan time allocated by the monthly base station. It should be noted that the terminal may scan all the carriers in the serving base station, and may also scan the fully configured carriers in the monthly base station.
  • the terminal when the terminal sends a request for scanning other carriers of the base station to the serving base station, the terminal may send the message by using the MOB SCN-REQ message or the new message MOB_SMC-REQ message.
  • the terminal when transmitting scan request signaling, the terminal also needs to add parameters necessary for the terminal to scan the base station carrier in the MOB SCN-REQ message or the MOB SMC-REQ message, for example: scan duration, alternating interval, The number of scans, the number of recommended base station carriers, the bitmap size of the serving base station carrier, the bitmap index of the serving base station carrier, and the index of the serving base station carrier.
  • Case 1 The scan request signaling is sent in the MOB_SCN-REQ message. Since the MOB SCN-REQ message itself carries the scanning duration, the alternating interval, the number of scans, etc. Information, therefore, simply add the following parameters to the MOB-SCN-REQ message: the number of recommended carriers, the bitmap size of the carrier, the bitmap index of the carrier, and the index of the carrier. Case 2, the scan request signaling is sent with the new message MOB_SMC-REQ message.
  • the serving base station receives the scan request signaling sent by the terminal. After the monthly base station receives the scan request signaling, the serving base station first determines according to the current state of the terminal and/or the scheduling algorithm inside the base station.
  • the serving base station determines that the terminal can start scanning, the serving base station sends a scan response message to the terminal, and carries the scan time allocated to the terminal in the scan response message; after receiving the scan response message, the terminal will The carrier of the monthly base station is scanned according to the scan response message sent by the serving base station in the scan time allocated by the monthly base station.
  • the processing in the above case 1 and case 2 will be described below in conjunction with the drawings.
  • Example 1 The following describes the processing in this example by using the case 1 as an example.
  • the multi-carrier information is sent by the serving base station to the terminal through the MOB SMC-ADV message, and the scanning request signaling is passed by the terminal through the original MOB.
  • FIG. 2 is a flow chart of Example 1 according to an embodiment of the present invention, as shown in Figure 2, including the following processing (step 1 - step 4): Step 1, supporting multi-carrier service
  • the base station broadcasts all carrier information (the above multi-carrier information) of the base station to the terminal.
  • the multi-carrier information of the serving base station may be carried in the MOB SMC-ADV message, where the message is a new message, which is a system message about the internal carrier information of the base station, and may be broadcast by the serving base station to the service area through the broadcast channel. terminal.
  • Table 1 shows the MOB-SMC-ADV message format supporting multiple carriers, where the multi-carrier information in the message includes but is not limited to the following parameters: number of carriers included in the multi-carrier cell, carrier identification (SCID), carrier Frequency (SCF), carrier bandwidth (SCB) (corresponding to step S102 in Fig. 1).
  • SCID carrier identification
  • SCF carrier Frequency
  • SCB carrier bandwidth
  • N-SCARRIERS The number of multi-carriers of the current monthly base station
  • SFC flag The number of fully configured carriers of the current serving base station
  • Step 2 When the service carrier cannot provide a good wireless condition for the terminal, the terminal provides a service base.
  • the station sends scan request signaling, requesting to allocate a scan time to scan the carrier of the current monthly base station.
  • the scan request signaling may be carried in the MOB_SCN-REQ message for transmission, and Table 2 shows the MOB supporting multiple carriers.
  • the SCN-REQ message format as shown in Table 2, can carry the following parameters in the MOB-SCN-REQ message: 1.
  • N-Related-SMC-Index The number of recommended base station carriers (N-Related-SMC-Index), in N—First- When the value of SMC_Index is equal to OxFF, it indicates that the bitmap index (SMC_Bitmap_Index) of the serving base station carrier needs to be used to identify the monthly base station carrier index in the MOB_SMC-ADV message. The value of N-Related-SMC-Index is not equal to OxFF. The number of carriers recommended in the MOB-SMC-ADV message; 2.
  • the bitmap size of the serving base station carrier (SMC_Bitmap-Size), used to indicate the size of the fully configured carrier bitmap index of the serving base station;
  • the bitmap index (SMC_Bitmap_Index) of the serving base station carrier is used to indicate the full configuration carrier bitmap index of the monthly base station; 4.
  • the index of the serving base station carrier (SMC-BS-I) Ndex) used to indicate the location index of the serving base station carrier in the MOB_SMC-ADV message (corresponding to step S104 in FIG. 1).
  • MOB Service base station carrier index in the SMC-ADV message.
  • SMC Bitmap—Size 6 whose size is less than or equal to MOB— SMC
  • SMC Bitmap — Index (SMC Bi 0: The corresponding multi-carrier is not requested.
  • Tmap Si 1 The corresponding multicarrier is requested.
  • N_Recommended_BS_ In 8 When the value is not equal to OxFF, it is the number of base stations recommended in the dex MOB NBR-ADV message. When the value is equal to OxFF, use the (BS Bitmap Index) to identify the base station index in the 'J MOB NBR-ADV message.
  • Step 3 After the serving base station receives the MOB SCN-REQ message carrying the scan request signaling from the terminal, the serving base station determines whether the terminal can start according to the service currently being performed by the terminal, and/or the scheduling algorithm inside the base station. The carrier of the scanning base station.
  • Step 4 When the base station determines that the terminal can start scanning the carrier of the base station, sends a scan response message to the terminal, and the terminal starts scanning the carrier of the serving base station, and determines whether to send a scan report to the base station according to the scan response message and how to Send a scan report.
  • the scan request signaling can be sent to the base station by using the MOB SCN-REQ message.
  • Example 2 The following is an example of the case in which the case 2 is taken as an example.
  • the multi-carrier information is sent by the monthly base station to the terminal through the MOB SMC-ADV message, and the scan request signaling is adopted by the terminal.
  • the added MOB_SMC-REQ message is sent to the serving base station.
  • FIG. 3 is a flowchart of Example 2 according to an embodiment of the present invention. As shown in FIG. 3, the following processing is included (Step 1 - Step 4): Step 1 The serving base station of the carrier broadcasts all carrier information of the base station to the terminal.
  • the multi-carrier information of the serving base station may be carried in the MOB-SMC-ADV message, where the message is a new message, which is a system message about the internal carrier information of the base station, and may be broadcast by the serving base station to the service area through the broadcast channel. Terminal.
  • the multi-carrier MOB-SMC-ADV message format refer to Table 1.
  • the multi-carrier information in the message includes but is not limited to the following parameters: the number of carriers, the carrier identifier (SCID), and the carrier frequency included in the multi-carrier cell. (SCF), carrier bandwidth (SCB) (corresponding to step S102 in Fig. 1).
  • SCF carrier frequency included in the multi-carrier cell.
  • SCB carrier bandwidth
  • the MOB_SMC-ADV message as shown in Table 1, the following parameters can also be added: 1.
  • Step 2 When the current serving carrier cannot provide a good radio condition for the terminal, the terminal sends a scan request signaling to the serving base station, requesting to allocate a period of time to scan the carrier of the current serving base station. Specifically, when the terminal sends the scan request signaling of the carrier of the scan service base station to the serving base station, the scan request may be sent by using the newly added MOB_SMC-REQ message to request the allocation scan interval, the scan estimation time, or the recommended start frame. .
  • MOB - SMC-REQ message is new message
  • Table 3 shows The multi-carrier MOB-SMC-REQ message format, as shown in Table 3, can carry the following parameters in the MOB SMC-REQ message: 1. Scan duration; 2. Interleaving interval; 3 4, Scan Iteration; 4. Recommended number of monthly base station carriers (N Recommended SMC Index). When the value of N-Related-SMC-Index is equal to OxFF, it indicates the bit of the monthly base station carrier.
  • the map index (SMC_Bitmap_Index) identifies the serving base station carrier index in the MOB_SMC-ADV message, and indicates the recommended number of carriers in the recommended MOB_SMC-ADV message when the value of N_Required-SMC_Index is not equal to OxFF; Bitmap size of the monthly base station carrier
  • SMC_Bitmap-Size used to indicate the size of the fully configured carrier bitmap index of the serving base station; 6.
  • SMC Bitmap—Size 6 whose size is less than or equal to MOB— SMC
  • SMC Bitmap — Index (SMC Bi 0: The corresponding multi-carrier is not requested.
  • Tmap Si ze+l)x4 1 The corresponding multicarrier is requested.
  • SMC BS— Index 8 MOB—Index of the corresponding location of the carrier of the monthly base station in the SMC-ADV message
  • Step 3 After the current serving base station receives the MOB SMC-REQ message carrying the scanning request signaling from the terminal, the serving base station determines whether the terminal can be based on the service currently being performed by the terminal, and/or the scheduling algorithm inside the base station. Start scanning the carrier of the base station.
  • Step 4 When the base station determines that the terminal can start scanning the carrier of the base station, the terminal Sending a scan response message, the terminal starts scanning the carrier of the serving base station, and determines whether to send a scan report to the base station and how to send the scan report according to the scan response message.
  • the scan request signaling can be sent to the base station by using the new MOB-SMC-REQ message.
  • FIG. 4 is a flowchart of a multi-carrier system-based scanning request sending method according to Embodiment 2 of the present invention.
  • the following processing is included (step S402 - step S404):
  • the ADV message is sent to the terminal, where the MOB_NBR-ADV message carries at least one of the following parameters: the identity of the neighboring base station, the preamble index/subchannel index, whether the co-location indication, the time-frequency synchronization indication, whether it is a full configuration Carrier, number of carriers, identification of the carrier, frequency of the carrier, bandwidth of the carrier.
  • Step S404 when the terminal needs to perform inter-base station carrier switching, for example, when the service carrier cannot provide good radio conditions for the terminal, or the service carrier signal strength decreases, and the terminal needs to search for a carrier with better strength, the terminal will serve the terminal.
  • the base station sends the scan request signaling, and the requesting base station allocates a scan time, and the terminal can scan the carrier in the neighbor base station according to the multi-carrier information within the scan time allocated by the monthly base station. It should be noted that the terminal may scan all carriers in the neighboring base station, and may also scan the fully configured carriers in the neighboring base station. Specifically, when the terminal sends a request for scanning other carriers of the neighboring base station to the base station, the terminal may send the message by using the MOB SCN-REQ message or the new message MOB_SMC-REQ message.
  • the terminal when transmitting scan request signaling, the terminal also needs to add parameters necessary for the terminal to scan the base station carrier in the MOB SCN-REQ message or the MOB_SMC-REQ message, for example: scan duration, alternate interval The number of scans, the number of recommended neighbor base station carriers, the bitmap size of the neighbor base station carrier, the bitmap index of the neighbor base station carrier, and the index of the neighbor base station carrier.
  • scan duration alternate interval
  • alternate interval The number of scans, the number of recommended neighbor base station carriers, the bitmap size of the neighbor base station carrier, the bitmap index of the neighbor base station carrier, and the index of the neighbor base station carrier.
  • Case 1 the scan request signaling is sent in the MOB-SCN-REQ message.
  • the MOB-SCN-REQ message itself carries information such as scan duration, alternate interval, number of scans, etc. Therefore, it is only necessary to add the following parameters to the MOB-SCN-REQ message: Number of recommended carriers, bitmap of carrier Size, bitmap index of the carrier, index of the carrier.
  • Case 2 the scan request signaling is sent with the new message MOB_SMC-REQ message. The following parameters must be carried in the MOB SMC-REQ message: scan duration, alternate interval, number of scans, index of recommended carriers, bitmap size of the carrier, bitmap index of the carrier, index of the carrier.
  • the serving base station receives the scan request signaling sent by the terminal.
  • the serving base station After the monthly base station receives the scan request signaling, the serving base station first determines according to the current state of the terminal and/or the scheduling algorithm inside the base station. Whether the terminal can start scanning the carrier, when the serving base station determines that the terminal can start scanning, the serving base station sends a scan response message to the terminal, and carries the scan time allocated to the terminal in the scan response message; after receiving the scan response message, the terminal will The carrier of the neighboring base station is scanned according to the scan response message sent by the serving base station in the scan time allocated by the monthly base station.
  • Example 3 The following describes the processing in this example by using the case 1 as an example.
  • the multi-carrier information is sent by the serving base station to the terminal through the MOB NBR - ADV message, and the scanning request signaling is passed by the terminal through the original MOB.
  • - SCN-REQ message is sent to the serving base station
  • Figure 5 is a flow chart of Example 3 according to an embodiment of the present invention, as shown in Figure 5, including the following processing (step 1 - step 4): Step 1, supporting multi-carrier service
  • the base station broadcasts all carrier information (multiple carrier information described above) of the neighbor base station to the terminal.
  • the multi-carrier information of the neighboring base station may be carried in the MOB_NBR-ADV message, and Table 4 shows the MOB-NBR-ADV message format supporting the multi-carrier, as shown in Table 4, the multi-carrier information in the message Including but not limited to the following parameters: identity of neighboring base station, preamble index/subchannel index, whether co-location indication, time-frequency synchronization indication, whether it is a fully configured carrier, the number of carriers included in a multi-carrier cell, carrier identification (SCID) Parameters such as carrier frequency (SCF), carrier bandwidth (SCB) (corresponding to step S402 in Fig. 4).
  • SCID carrier identification
  • SCF carrier frequency
  • SCB carrier bandwidth
  • Step 2 When the service carrier cannot provide a good radio condition for the terminal, the terminal sends a scan request signaling to the serving base station, requesting to allocate a scan time to scan the carrier of the neighbor base station.
  • the scan request signaling may be carried in the MOB_SCN-REQ message for transmission, and Table 5 shows the MOB SCN supporting multi-carrier.
  • the REQ message format as shown in Table 5, can carry the following parameters in the MOB-SCN-REQ message: 1.
  • N-Related-SMC-Index Recommended number of neighbor base station carriers (N-Related-SMC-Index), in N-Related-SMC-
  • the value of Index is equal to OxFF, it indicates that the bitmap index (SMC_Bitmap-Index) of the neighbor base station carrier needs to be used to identify the neighbor base station carrier index in the MOB-NBR-ADV message, and the value of N-Related-SMC-Index is not equal to In OxFF, it is expressed as the number of carriers recommended in the MOB NBR - ADV message; 2.
  • the bitmap size of the neighboring base station carrier (SMC_Bitmap_Size) is used to indicate the size of the fully configured carrier bitmap index of the neighboring base station;
  • a bitmap index (SMC_Bitmap_Index) of the neighbor base station carrier used to indicate the fully configured carrier bit of the neighbor base station.
  • the index of the neighboring base station carrier (SMC_BS_Index) is used to indicate the location index of the neighboring base station carrier in the MOB_NBR-ADV message (corresponding to step S404 in FIG. 4).
  • Step 3 After the serving base station receives the MOB SCN-REQ message carrying the scanning request signaling from the terminal, the serving base station determines whether the terminal can be based on the service currently being performed by the terminal, and/or the scheduling algorithm inside the base station. Start scanning the carrier of the neighbor base station.
  • Step 4 When the serving base station determines that the terminal can start scanning the carrier of the neighboring base station, it sends a scan response message to the terminal, and the terminal starts scanning the carrier of the neighboring base station, and then determines whether to send the scan report to the serving base station according to the scan response message and how to send the scan report. Scan report.
  • the scan request signaling may be sent to the serving base station by using the MOB SCN-REQ message.
  • Example 4 The following describes the processing in this example by using Case 2 as an example.
  • the multi-carrier information is sent by the monthly base station to the terminal through the MOB NBR-ADV message, and the scanning request signaling is added by the terminal.
  • the MOB SMC-REQ message is sent to the serving base station.
  • FIG. 6 is a flowchart of Example 4 according to an embodiment of the present invention. As shown in FIG.
  • Step 1 Supporting multi-carrier service
  • the base station broadcasts all carrier information (multiple carrier information described above) of the neighbor base station to the terminal.
  • the multi-carrier information of the neighboring base station may be carried in the MOB_NBR-ADV message, and the MOB-NBR-ADV message format supporting the multi-carrier is shown in Table 4.
  • the multi-carrier information in the message includes but is not limited to The following parameters: identity of the neighboring base station, preamble index/subchannel index, whether the co-location indication, time-frequency synchronization indication, whether it is a fully configured carrier, the number of carriers included in the multi-carrier cell, the carrier identifier (SCID), the frequency of the carrier (SCF), carrier bandwidth (SCB) and other parameters (corresponding to step S402 in Fig. 4).
  • Step 2 When the current serving carrier cannot provide a good radio condition for the terminal, the terminal sends a scan request signaling to the serving base station, and requests to allocate a period of time to scan the carrier of the neighboring base station.
  • the scan request may be sent by using the newly added MOB_SMC-REQ message to request the allocation scan interval, the scan estimation time, or the recommendation. Start frame.
  • the MOB-SMC-REQ message is a new message.
  • Table 6 shows the MOB-SMC-REQ message format supporting multi-carrier. As shown in Table 6, the following parameters can be carried in the MOB-SMC-REQ message: 1. Scanning continues Time (Scan duration); 2. Interleaving interval; 3. Scan Iteration; 4.
  • N-Related-SMC-Index N-Related- SMC –
  • the value of Index is equal to OxFF, it indicates that the bitmap index (SMC_Bitmap-Index) of the neighbor base station carrier needs to be used to identify the neighbor base station carrier index in the MOB NBR-ADV message.
  • N-Related-SMC-Index is not equal to In OxFF, it indicates the recommended number of carriers in the MOB-NBR-ADV message; 5, the bitmap size of the neighboring base station carrier (SMC_Bitmap-Size), which is used to indicate the size of the fully configured carrier bitmap index of the neighboring base station; a bitmap index (SMC_Bitmap-Index) of the neighboring base station carrier, used to indicate a fully configured carrier bitmap index of the neighboring base station; 7. an index of the neighboring base station carrier (SMC_BS_Index), used to indicate M The position index of the neighbor base station carrier in the OB-NBR-ADV message (corresponding to step S404 in Fig. 4). Table 6
  • Step 3 After the current serving base station receives the MOB SMC-REQ message carrying the scanning request signaling from the terminal, the serving base station determines whether the terminal can be based on the service currently being performed by the terminal, and/or the scheduling algorithm inside the base station. Start scanning the carrier of the neighbor base station.
  • Step 4 When the serving base station determines that the terminal can start scanning the carrier of the neighboring base station, it sends a scan response message to the terminal, and the terminal starts scanning the carrier of the neighboring base station, and then determines whether to send the scan report to the serving base station according to the scan response message and how to send the scan report. Scan report.
  • FIG. 7 is a flowchart of a multi-carrier system-based scanning request sending method according to Embodiment 3 of the present invention. As shown in FIG.
  • Step S702 The terminal acquires multi-carrier information sent by the serving base station; specifically, if the multi-carrier information is multi-carrier information of the neighboring base station, the serving base station may The MOB NBR - ADV message is sent to the terminal, where the MOB_NBR - ADV message is carried At least one of the following parameters: identity of the neighboring base station, preamble index/subchannel index, whether the co-location indication, time-frequency synchronization indication, whether the carrier is fully configured, the number of carriers, the identifier of the carrier, the frequency of the carrier, the bandwidth of the carrier .
  • the serving base station may send the terminal to the terminal by using the MOB SMC-ADV message, where the MOB_SMC_ADV message carries at least one of the following parameters: Number of carriers of the base station, full configuration Carrier indicator, number of fully configured carriers of the base station, carrier identification, carrier frequency, carrier bandwidth.
  • Step S704 when the terminal needs to perform inter-base station carrier switching, for example, when the service carrier cannot provide good radio conditions for the terminal, or the service carrier signal strength decreases, and the terminal needs to search for a carrier with better strength, the terminal will serve the terminal.
  • the base station sends the scan request signaling, and the requesting base station allocates a scan time, and the terminal can scan the carrier in the neighbor base station according to the multi-carrier information within the scan time allocated by the monthly base station.
  • the terminal sends scan request signaling to the serving base station, and requests the serving base station to allocate a scan time, and the terminal can scan the service base station according to the multi-carrier information within the scan time allocated by the serving base station. Carrier.
  • the terminal may scan all carriers in the base station and the neighboring base station, and may also scan the fully configured carriers in the base station and the neighboring base station.
  • the terminal when the terminal sends a request for scanning the base station and/or other carriers of the neighboring base station to the base station, the terminal may send the message by using the MOB_SCN-REQ message or the new message MOB_SMC-REQ message.
  • the terminal when sending the scan request signaling, the terminal also needs to add parameters necessary for the terminal to scan the base station carrier in the MOB_SCN-REQ message or the MOB_SMC-REQ message, for example: scan duration, alternating interval, The number of scans, the number of recommended base station carriers, the bitmap size of the base station carrier, the bitmap index of the base station carrier, and the index of the base station carrier.
  • Case 1 The scan request signaling is sent in the MOB_SCN-REQ message. Since the MOB_SCN-REQ message itself carries information such as scan duration, alternate interval, number of scans, etc., it is only necessary to add the following parameters to the MOB_SCN-REQ message: Number of recommended carriers, bit of carrier Graph size, bitmap index of the carrier, index of the carrier. Case 2, the scan request signaling is sent with the new message MOB_SMC-REQ message.
  • the serving base station receives the scan request signaling sent by the terminal. After the monthly base station receives the scan request signaling, the serving base station first determines according to the current state of the terminal and/or the scheduling algorithm inside the base station.
  • the serving base station determines that the terminal can start scanning, the serving base station sends a scan response message to the terminal, and carries the scan time allocated to the terminal in the scan response message; after receiving the scan response message, the terminal will The carrier of the base station and/or the neighboring base station is scanned according to the scan response message sent by the serving base station in the scan time allocated by the monthly base station.
  • the terminal sends the scan request signaling to the serving base station when the terminal needs to perform the handover, which solves the problem that the terminal cannot send the scan request to the base station in the related art, so that the terminal can Scan request signaling needs to be sent to request a handover.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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Description

基于多载波系统的扫描请求发送方法 技术领域 本发明涉及通信领域, 特别地, 涉及一种基于多载波系统的扫描请求发 送方法。 背景技术 在相关技术中 ,为了满足高速率的要求,在系统中引入了多载波的概念。 基站可以配置多个载波, 并且这些载波可以分为两种:一种是全配置载 波, 另一种是部分配置载波。 其中, 全配置载波中包含所有必须的同步信道、 控制信道等系统侧信息; 部分配置载波中可以仅包含数据传送信道、 或者仅 包含一些必须的控制消息, 与全配置载波相比, 部分配置载波可以不包括同 步信道。 在终端侧, 载波可以分为主载波和辅载波。 其中, 主载波必须是全配置 载波, 主要用于基站和终端之间的控制消息和 /或数据交互, 还可以用于进行 业务处理、以及物理(Physics,筒称为 PHY )控制信息或媒体接入控制( Media Access Control, 筒称为 MAC ) 信息的交互; jt匕外, 主载波还可以用于完成 部分终端控制功能(例如, 网络接入)。 需要说明的是, 每个终端在一个小区 内有且仅有一个主载波。 辅载波可以是全配置载波, 也可以是部分配置载波, 辅载波是为终端传 输业务的额外载波, 主要用于数据交互。 其中, 辅载波上也可包含支持多载 波操作的控制信令。 一个终端可以有多个辅载波, 也可以没有辅载波。 在移动通信系统中, 当终端移动到基站边缘时, 如果原来的月 务基站信 号条件下降、 且无法继续向终端提供业务, 则终端需要切换到另外一个基站 来维持业务的连续性, 这种切换是基站间切换。 在多载波系统中, 由于一个基站提供多个载波, 那么当终端正在使用的 载波(月 务载波) 负载过大从而导致月 务质量 (Quality of Service, 筒称为 QoS )下降, 或者服务载波信号强度下降, 终端需要搜索更好强度的载波时, 终端可以在基站内切换到其他载波上进行数据传输, 这种切换方^ &站内切 换。 在单载波系统中, 基站会通过广播信息广播邻小区(与当前服务小区相 邻的小区) 的信息, 以支持终端对邻小区的扫描, 使终端能够测量邻小区的 信号质量, 该广播信息可以提供邻小区的基站标识等信息。在多载波系统中, 一个基站中配置多个载波, 基站会通过广播信息广播服务基站及其邻基站的 多载波信息, 但是, 在相关技术中, 当服务载波不能为终端提供良好的无线 条件时, 目前终端没有向 ^务基站发送扫描请求的相应方案, 以请求扫描基 站的载波。 发明内容 考虑到在相关技术中在多载波系统中终端没有向基站发送多载波扫描 请求的相应方案的问题而提出本发明, 为此, 本发明的主要目的在于提供一 种改进的基于多载波系统的扫描请求发送方案 , 以解决相关技术中存在的上 述问题。 为了实现上述目的, 根据本发明的一个方面, 提供了一种基于多载波系 统的扫描请求发送方法。 才艮据本发明的基于多载波系统的扫描请求发送方法包括:终端获取服务 基站发送的服务基站的多载波信息; 在需要进行基站内载波切换时, 终端向 月 务基站发送扫描请求信令 , 请求扫描服务基站的载波。 其中, 终端请求扫描服务基站的载波包括: 终端请求扫描服务基站中的 全部载波; 或者, 终端请求扫描服务基站中的全配置载波。 其中, 扫描请求信令携带有以下至少之一: 扫描持续时间、 交替区间、 扫描次数、 推荐载波的个数索引、 载波的位图大小、 载波的位图索引、 载波 的索引。 为了实现上述目的, 根据本发明的另一个方面, 提供了一种基于多载波 系统的扫描请求发送方法。 才艮据本发明的基于多载波系统的扫描请求发送方法包括:终端获取服务 基站发送的服务基站的邻基站的多载波信息; 在需要进行基站间切换时, 终 端向服务基站发送扫描请求信令, 请求扫描邻基站的载波。 其中, 终端请求扫描邻基站的载波包括: 终端请求扫描邻基站中的全部 载波; 或者, 终端请求扫描邻基站中的全配置载波。 其中, 扫描请求信令携带有以下至少之一: 扫描持续时间、 交替区间、 扫描次数、 推荐载波的个数索引、 载波的位图大小、 载波的位图索引、 载波 的索引。 为了实现上述目的, 根据本发明的另一个方面, 提供了一种基于多载波 系统的扫描请求发送方法。 才艮据本发明的基于多载波系统的扫描请求发送方法包括:终端获取服务 基站发送的多载波信息; 在需要进行切换时 , 终端向服务基站发送扫描请求 信令, 请求进行载波扫描。 其中 , 终端获取服务基站发送的多载波信息包括: 终端获取服务基站发 送的服务基站的多载波信息; 和 /或, 终端获取服务基站发送的服务基站的邻 基站的多载波信息。 其中,在需要进行切换时,终端发送扫描请求信令,请求扫描载波包括: 在需要进行基站内载波切换时, 终端向服务基站发送扫描请求信令, 请求扫 描服务基站的载波; 或者, 在需要进行基站间切换时, 终端向服务基站发送 扫描请求信令, 请求扫描邻基站的载波。 其中, 请求扫描服务基站的载波包括: 终端请求扫描服务基站中的全部 载波; 或者, 终端请求扫描服务基站中的全配置载波; 请求扫描邻基站的载 波包括: 终端请求扫描邻基站中的全部载波; 或者, 终端请求扫描邻基站中 的全配置载波。 借助于本发明的技术方案, 通过在终端需要进行切换时, 终端向服务基 站发送扫描请求信令, 解决了相关技术中终端无法向基站发出扫描请求的问 题, 使得终端能够根据需要发送扫描请求信令, 以请求进行切换。 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 是根据本发明方法实施例一的基于多载波系统的扫描请求发送方 法的流程图; 图 2是才艮据本发明实施例的实例 1的流程图; 图 3是才艮据本发明实施例的实例 2的流程图; 图 4 是根据本发明方法实施例二的基于多载波系统的扫描请求发送方 法的流程图; 图 5是才艮据本发明实施例的实例 3的流程图; 图 6是根据本发明实施例的实例 4的流程图; 图 7 是根据本发明方法实施例三的基于多载波系统的扫描请求发送方 法的流程图。 具体实施方式 功能相克述 在多载波系统的相关技术中 ,当服务载波不能为终端提供良好的无线条 件时, 终端没有向服务基站发送请求扫描的相应方案。 为此, 本发明提供了 一种改进的基于多载波系统的扫描请求发送方案 , 在本发明的技术方案中 , 支持多载波的月 务基站向终端广播本基站以及邻基站的所有载波信息 , 当月 务载波不能为终端提供良好的无线条件时, 终端向 ^^务基站发送扫描请求信 令, 请求进行扫描。 需要说明的是, 本发明实施例中所描述的基站是为终端 提供服务的服务基站。 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。 在以下的描述中, 为了解释的目的, 描述了多个特定的细节, 以提供对 本发明的透彻理解。 然而, 艮显然, 在没有这些特定细节的情况下, 也可以 实现本发明, 此外, 在不背离所附权利要求阐明的精神和范围的情况下, 下 述实施例以及实施例中得各个细节可以进行各种组合。 方法实施例一 根据本发明的实施例 , 提供了一种基于多载波系统的扫描请求发送方 法, 图 1是才艮据本发明方法实施例一的基于多载波系统的扫描请求发送方法 的流程图, 如图 1所示, 包括以下处理 (步骤 S102 -步骤 S104 ): 步骤 S102, 终端获取服务基站发送的本基站的多载波信息; 具体地, 上述多载波信息可以由服务基站通过 MOB SMC - ADV 消息发送给终端, 其中, MOB— SMC - ADV消息中携带以下参数的至少之一:基站的载波数量、 全配置载波指示符、 基站的全配置载波数量、 载波标识、 载波频率、 载波带 宽。 步骤 S104, 在终端需要进行基站内载波切换时, 例如, 当服务载波不 能为终端提供良好的无线条件时, 或者服务载波信号强度下降, 终端需要搜 索更好强度的载波时, 终端就会向服务基站发送扫描请求信令, 请求服务基 站分配一段扫描时间 , 终端就可以在月 务基站分配的扫描时间内才艮据多载波 信息扫描服务基站中的载波。 需要说明的是, 终端可以扫描服务基站中的全 部载波, 也可以扫描月 务基站中的全配置载波。 具体地 , 当终端向 务基站发送扫描该基站的其他载波的请求时, 可以 通过 MOB SCN-REQ消息,或新消息 MOB— SMC-REQ消息进行发送。 jt匕外, 在发送扫描请求信令时, 终端还需要在 MOB SCN-REQ 消息或 MOB SMC-REQ消息中添加终端在扫描基站的载波时所必须的参数 , 例如: 扫描持续时间、 交替区间、 扫描次数、 推荐服务基站载波的个数索引、 服务 基站载波的位图大小、 服务基站载波的位图索引、 服务基站载波的索引等参 数。 从上面的描述可以看出, 终端向服务基站发送扫描请求信令时, 有以下 两种情况: 情况一, 以 MOB— SCN-REQ 消息发送扫描请求信令。 由于 MOB SCN-REQ消息中本身就携带有扫描持续时间、 交替区间、 扫描次数等 信息, 因此, 只需在 MOB— SCN-REQ 消息中添加以下参数: 推荐载波的个 数索引、 载波的位图大小、 载波的位图索引、 载波的索引。 情况二, 以新消息 MOB— SMC-REQ消息发送扫描请求信令。 则必须在 MOB SMC-REQ 消息中携带以下的参数: 扫描持续时间、 交替区间、 扫描 次数、 推荐载波的个数索引、 载波的位图大小、 载波的位图索引、 载波的索 引。 在步骤 S104之后, 服务基站就会接收到终端发送的扫描请求信令; 在 月 务基站接收到扫描请求信令后,服务基站首先根据终端的当前状态和 /或基 站内部的调度算法等信息确定终端是否能够开始扫描载波, 在服务基站确定 终端能够开始扫描时, 服务基站向终端发送扫描应答消息, 并在扫描应答消 息中携带分配给终端的扫描时间; 终端接收到扫描应答消息后 , 就会根据服 务基站发送的扫描应答消息在月 务基站分配的扫描时间内对月 务基站的载波 进行扫描。 下面将进一步结合附图, 分别对上述情况一和情况二下的处理进行说 明。 实例 1 下面将以情况一为例对该实例下的处理进行说明, 在本实例中, 多载波 信息由服务基站通过 MOB SMC-ADV消息发送给终端, 扫描请求信令由终 端通过原有的 MOB— SCN-REQ消息发送到服务基站, 图 2是根据本发明实 施例的实例 1的流程图, 如图 2所示, 包括以下处理 (步骤 1 -步骤 4 ): 步骤 1 , 支持多载波的服务基站向终端广播本基站的所有载波信息(上 述多载波信息 )。 具体地, 服务基站的多载波信息可以携带在 MOB SMC-ADV 消息中, 此消息为一个新消息, 是有关基站内部载波信息 的系统消息 , 可以由服务基站通过广播信道广播给其服务区域内的终端。 表 1 示出了支持多载波的 MOB— SMC-ADV消息格式, 其中, 该消息中的多载 波信息包括但不限于以下参数: 多载波小区中所包含的载波数量、 载波标识 ( SCID )、 载波的频率 (SCF )、 载波的带宽 (SCB ) (对应于图 1 中的步骤 S102 )。
MOB SMC-ADV 消息中, 还需要添加以下参数: 1、 当前月 务基站的 多载波数量( N— SCARRIERS ); 2、 是否是全配置载波提示符( SFC flag ); 3、 当前服务基站的全配置载波数量 ( N— SFCARRIERS )。
表 1
Figure imgf000009_0001
步骤 2 , 当服务载波不能为终端提供良好的无线条件时, 终端向服务基 站发送扫描请求信令 , 请求分配一段扫描时间来扫描当前月 务基站的载波。 具体地, 当终端向服务基站发送扫描服务基站的载波的扫描请求信令时, 可 以将扫描请求信令携带在 MOB— SCN-REQ消息中进行发送, 表 2示出了支 持多载波的 MOB— SCN-REQ消息格式,如表 2所示,可以在 MOB— SCN-REQ 消 息 中 携 带 以 下参数: 1 、 推荐服务基站载波的 个数索 引 ( N— Recommended— SMC— Index ),在 N— Recommended— SMC— Index的值等于 OxFF 时, 表示需要使用服务基站载波的位图索引 ( SMC_Bitmap_Index ) 识 别 MOB— SMC-ADV 消 息 中 的 月 务 基 站 载 波 索 引 , 在 N— Recommended— SMC— Index的值不等于 OxFF时,表示为 MOB— SMC-ADV 消息中所推荐的载波数; 2、 服务基站载波的位图大小 (SMC— Bitmap— Size ), 用于表示服务基站全配置载波位图索引的大小; 3、 服务基站载波的位图索 引 ( SMC— Bitmap— Index ), 用于表示月 务基站全配置载波位图索引; 4、 服务 基站载波的索引 ( SMC—BS— Index ) , 用于表示 MOB— SMC-ADV消息中服务 基站载波的位置索引 (对应于图 1中的步骤 S104 )。 表 2
Syntax (语法 ) Size (bit) Notes (备注)
大小 (比特)
… … …
Scan Iteration 8
N— Recommended— SMC— I 8 其值不等于 OxFF 时 , 就是 ndex MOB— SMC-ADV 消息里面所推荐 的载波数, 其值等于 OxFF 时, 使 用 (SMC— Bitmap— Index) 识 另' J
MOB— SMC-ADV 消息中的服务基 站载波索引。
If(N— Recommended— SM
C— Index != 0){
Configuration Change 8
Count for
MOB— NBR-ADV
message
}
If(N— Recommended— SM
C— Index == 0xFF){ Reserved 1 可设为 0
Req_Seq_Num 1 与每个新消息相联的消息的一位序 列数
SMC— Bitmap— Size 6 其大小小于或等于 MOB— SMC
ADV消息中服务基站的载波数
SMC— Bitmap— Index (SMC Bi 0: 相应的多载波没有被请求。
tmap Si 1 : 相应的多载波被请求。
ze+l)x4
for( each 41, in
Nbr Bitmap Index) {
Reserved 1 可设为 0
Scanning— type 1 ObOOO: 无关联扫描; 0b001: 层 0 关 联扫描 ;0b010: 层 1关联扫描 ;0b011: 层 2关联扫描; OblOO— Obi 1 \ 保留
}
} else {
Figure imgf000011_0001
N— Recommended— SMC —I
ndex; j++) {
SMC— BS— Index 8 MOB SMC-ADV 消息中服务基站 载波相应位置的索引
Req_Seq_Num 1 与每个新消息相联的消息的一位序 列数
Scanning— type 1 0b000: 无关联扫描; 0b001: 层 0 关 联扫描 ;0b010: 层 1关联扫描 ;0b011: 层 2关联扫描; OblOO— 0b 11 \ 保留
}
}
N_Recommended_BS_ In 8 其值不等于 OxFF 时 , 就是 dex MOB NBR-ADV 消息里面所推荐 的基站数, 其值等于 OxFF 时, 使 用 (BS Bitmap Index) 识 另' J MOB NBR-ADV 消息中的基站索 引。
… 步骤 3 , 当服务基站接收到来自终端的携带有扫描请求信令的 MOB SCN-REQ 消息后, 服务基站根据终端当前正在进行的业务、 和 /或基 站内部的调度算法等 , 确定终端是否可以开始扫描 务基站的载波。 步骤 4, 当^^务基站确定终端能够开始扫描^^务基站的载波时, 向终端 发送扫描应答消息, 终端开始扫描服务基站的载波, 并根据扫描应答消息决 定是否向基站发送扫描报告以及如何发送扫描报告。 通过上述的处理, 使得在终端需要进行基站内载波切换时, 可以通过 MOB SCN-REQ消息向基站发送扫描请求信令。 实例 2 下面^)夺以情况二为例对该实例下的处理进行说明, 在本实例中, 多载波 信息由月 务基站通过 MOB SMC-ADV消息发送到终端, 扫描请求信令由终 端通过新增的 MOB— SMC-REQ消息发送给服务基站, 图 3是根据本发明实 施例的实例 2的流程图, 如图 3所示, 包括以下处理 (步骤 1 -步骤 4 ): 步骤 1 , 支持多载波的服务基站向终端广播本基站的所有载波信息。 具 体地, 服务基站的多载波信息可以携带在 MOB— SMC-ADV消息中, 此消息 为一个新消息, 是有关基站内部载波信息的系统消息, 可以由服务基站通过 广播信道广播给其服务区域内的终端。 支持多载波的 MOB— SMC-ADV消息 格式可以参照表 1 , 该消息中的多载波信息包括但不限于以下参数: 该多载 波小区中所包含的载波数量、 载波标识 (SCID )、 载波的频率 (SCF )、 载波 的带宽 (SCB ) (对应于图 1中的步骤 S 102 )。 此外,在如表 1所示的 MOB— SMC-ADV消息中,还可以添加以下参数: 1、 当前服务基站的多载波数量 N— SCARRIERS; 2、 是否是全配置载波提示 符 SFC flag; 3、 当前服务基站的全配置载波数量 N— SFCARRIERS。 步骤 2 , 当前服务载波不能为终端提供良好的无线条件时, 终端向服务 基站发送扫描请求信令, 请求分配一段时间来扫描当前服务基站的载波。 具 体地 , 当终端向服务基站发送扫描服务基站的载波的扫描请求信令时 , 可以 通过新增的 MOB— SMC-REQ消息发送扫描请求, 以请求分配扫描区间、 扫 描估计时间、 或推荐开始帧。 MOB— SMC-REQ 消息为新消息, 表 3 示出了 支持多载波的 MOB— SMC-REQ 消息格式, 如表 3 所示, 可以在 MOB SMC-REQ消息中携带以下参数: 1、 扫描持续时间 ( Scan duration ); 2、 交替区间 ( Interleaving interval ); 3、 扫4 次数( Scan Iteration ); 4、 推荐 月 务基站载 波的 个数索 引 ( N Recommended SMC Index ) , 在 N— Recommended— SMC— Index的值等于 OxFF 时, 表示需要使用月 务基站载 波的位图索引 ( SMC_Bitmap_Index )识别 MOB— SMC-ADV消息中的服务基 站载波索引, 在 N— Recommended— SMC— Index的值不等于 OxFF时, 表示推 荐 MOB— SMC-ADV 消息中所推荐的载波数; 5、 月 务基站载波的位图大小
( SMC— Bitmap— Size ), 用于表示服务基站全配置载波位图索引的大小; 6、 服务基站载波的位图索引 ( SMC— Bitmap— Index ), 用于表示服务基站全配置 载波位图索引; 7、 服务基站载波的索引 ( SMC—BS— Index ) , 用于表示 MOB— SMC-ADV 消息中服务基站载波的位置索引 (对应于图 1 中的步骤 S104 )。 表 3
Figure imgf000013_0001
If(N— Recommended— SM
C Index == 0xFF) { ―
Reserved 1 可设为 0
Req_Seq_Num 1 与每个新消息相联的消息的一位序 列数
SMC— Bitmap— Size 6 其大小小于或等于 MOB— SMC
ADV消息中月 务基站的载波数
SMC— Bitmap— Index (SMC Bi 0: 相应的多载波没有被请求。
tmap Si ze+l)x4 1 : 相应的多载波被请求。
for( each ' 1, in
Nbr Bitmap Index) {
Reserved 1 可设为 0
Scanning— type 1 ObOOO: 无关联扫描; 0b001: 层 0关联 扫描; 0b010: 层 1 关联扫描; ObOl l : 层 2关联扫描; OblOO— 0b 111 : 保留
}
} else {
for(j = 0; j <
N— Recommended— SMC—
Index; j++) {
SMC— BS— Index 8 MOB— SMC -ADV消息中月 务基站 载波相应位置的索引
Req_Seq_Num 1 与每个新消息相联的消息的一位序 列数
Scanning— type 1 0b000: 无关联扫描; 0b001: 层 0关联 扫描; 0b010: 层 1 关联扫描; ObOl l : 层 2关联扫描; OblOO— 0b 111 : 保留
}
}
} 步骤 3 , 当前服务基站收到来自终端的携带有扫描请求信令的 MOB SMC-REQ 消息后, 服务基站根据终端当前正在进行的业务、 和 /或基 站内部的调度算法等, 确定终端是否可以开始扫描 务基站的载波。 步骤 4, 当^^务基站确定终端能够开始扫描^^务基站的载波时, 向终端 发送扫描应答消息, 终端开始扫描服务基站的载波, 并才艮据扫描应答消息决 定是否向基站发送扫描报告以及如何发送扫描报告。 通过上述的处理, 使得在终端需要进行基站内载波切换时, 可以通过新 的 MOB— SMC-REQ消息向基站发送扫描请求信令。 方法实施例二 根据本发明的实施例 , 提供了一种基于多载波系统的扫描请求发送方 法, 图 4是才艮据本发明方法实施例二的基于多载波系统的扫描请求发送方法 的流程图, 如图 4所示 , 包括以下处理 (步骤 S402 -步骤 S404 ): 步骤 S402 , 终端获取服务基站发送的其邻基站的多载波信息; 具体地 , 上述多载波信息可以由服务基站通过 MOB— NBR - ADV 消息发送给终端, 其中, MOB— NBR - ADV消息中携带以下参数的至少之一: 邻基站的标识、 前导索引 /子信道索引、 是否共址指示、 时频同步指示、 是否为全配置载波、 载波的数量、 载波的标识、 载波的频率、 载波的带宽。 步骤 S404, 在终端需要进行基站间载波切换时, 例如, 当服务载波不 能为终端提供良好的无线条件时, 或者服务载波信号强度下降, 终端需要搜 索更好强度的载波时, 终端就会向服务基站发送扫描请求信令, 请求服务基 站分配一段扫描时间 , 终端就可以在月 务基站分配的扫描时间内才艮据多载波 信息扫描邻基站中的载波。 需要说明的是, 终端可以扫描邻基站中的全部载 波, 也可以扫描邻基站中的全配置载波。 具体地, 当终端向^^务基站发送扫描邻基站的其他载波的请求时, 可以 通过 MOB SCN-REQ消息,或新消息 MOB— SMC-REQ消息进行发送。 jt匕外, 在发送扫描请求信令时, 终端还需要在 MOB SCN-REQ 消息或 MOB— SMC-REQ消息中添加终端在扫描基站的载波时所必须的参数 , 例如: 扫描持续时间、 交替区间、 扫描次数、 推荐邻基站载波的个数索引、 邻基站 载波的位图大小、 邻基站载波的位图索引、 邻基站载波的索引等参数。 从上面的描述可以看出, 终端向服务基站发送扫描请求信令时, 有以下 两种情况:
情况一, 以 MOB— SCN-REQ 消息发送扫描请求信令。 MOB— SCN-REQ消息中本身就携带有扫描持续时间、 交替区间、 扫描次数等 信息, 因此, 只需在 MOB— SCN-REQ 消息中添加以下参数: 推荐载波的个 数索引、 载波的位图大小、 载波的位图索引、 载波的索引。 情况二, 以新消息 MOB— SMC-REQ消息发送扫描请求信令。 则必须在 MOB SMC-REQ 消息中携带以下的参数: 扫描持续时间、 交替区间、 扫描 次数、 推荐载波的个数索引、 载波的位图大小、 载波的位图索引、 载波的索 引。 在步骤 S104之后, 服务基站就会接收到终端发送的扫描请求信令; 在 月 务基站接收到扫描请求信令后,服务基站首先根据终端的当前状态和 /或基 站内部的调度算法等信息确定终端是否能够开始扫描载波, 在服务基站确定 终端能够开始扫描时, 服务基站向终端发送扫描应答消息, 并在扫描应答消 息中携带分配给终端的扫描时间; 终端接收到扫描应答消息后 , 就会根据服 务基站发送的扫描应答消息在月 务基站分配的扫描时间内对邻基站的载波进 行扫描。 下面将进一步结合附图, 分别对上述情况一和情况二下的处理进行说 明。 实例 3 下面将以情况一为例对该实例下的处理进行说明, 在本实例中, 多载波 信息由服务基站通过 MOB NBR - ADV 消息发送给终端, 扫描请求信令由 终端通过原有的 MOB— SCN-REQ消息发送到服务基站, 图 5是根据本发明 实施例的实例 3的流程图, 如图 5所示 , 包括以下处理 (步骤 1 -步骤 4 ): 步骤 1 , 支持多载波的服务基站向终端广播邻基站的所有载波信息(上 述多载波信息)。具体地,邻基站的多载波信息可以携带在 MOB— NBR - ADV 消息中, 表 4示出了支持多载波的 MOB— NBR - ADV消息格式, 如表 4所 示, 该消息中的多载波信息包括但不限于以下参数: 邻基站的标识、 前导索 引 /子信道索引、 是否共址指示、 时频同步指示、 是否为全配置载波、 多载波 小区中所包含的载波数量、 载波标识 (SCID )、 载波的频率 (SCF )、 载波的 带宽 (SCB ) 等参数(对应于图 4中的步骤 S402 )。 表 4
Figure imgf000017_0001
步骤 2 , 当服务载波不能为终端提供良好的无线条件时 , 终端向服务基 站发送扫描请求信令,请求分配一段扫描时间来扫描邻基站的载波。具体地, 当终端向 务基站发送扫描邻基站载波的扫描请求信令时 , 可以将扫描请求 信令携带在 MOB— SCN-REQ 消息中进行发送, 表 5 示出了支持多载波的 MOB SCN-REQ消息格式 , 如表 5所示, 可以在 MOB— SCN-REQ消息中携 带以下参数: 1、推荐邻基站载波的个数索引(N— Recommended— SMC— Index ), 在 N— Recommended— SMC— Index的值等于 OxFF时, 表示需要使用邻基站载 波的位图索引 ( SMC— Bitmap— Index ) 识别 MOB— NBR - ADV消息中的邻基 站载波索引, 在 N— Recommended— SMC— Index的值不等于 OxFF时, 表示为 MOB NBR - ADV 消息中所推荐的载波数; 2、 邻基站载波的位图大小 ( SMC— Bitmap— Size ), 用于表示邻基站全配置载波位图索引的大小; 3、 邻 基站载波的位图索引 ( SMC— Bitmap— Index ), 用于表示邻基站全配置载波位 图索引; 4、 邻基站载波的索引 ( SMC—BS— Index ), 用于表示 MOB— NBR - ADV消息中邻基站载波的位置索引 (对应于图 4中的步骤 S404 )。
表 5
Figure imgf000018_0001
联扫描 ;0b010: 层 1关联扫描 ;0b011: 层 2关联扫描; OblOO— Obi 1 \ 保留
}
} else {
for(j = 0; j <
N— Recommended— SMC— I
ndex; j++) {
SMC— BS— Index 8 MOB NBR - ADV消息中月 务基站 载波相应位置的索引
Req_Seq_Num 1 与每个新消息相联的消息的一位序 列数
Scanning— type 1 0b000: 无关联扫描; 0b001: 层 0 关 联扫描 ;0b010: 层 1关联扫描 ;0b011: 层 2关联扫描; OblOO— 0b 11 \ 保留
}
}
N— Recommended— BS— In 8 其值不等于 OxFF 时 , 就是 dex MOB NBR - ADV消息里面所推荐 的基站数, 其值等于 OxFF 时, 使 用 (BS Bitmap Index) 识 另' J
MOB NBR - ADV消息中的基站索 引。
} 步骤 3 , 当服务基站接收到来自终端的携带有扫描请求信令的 MOB SCN-REQ 消息后, 服务基站根据终端当前正在进行的业务、 和 /或基 站内部的调度算法等, 确定终端是否可以开始扫描邻基站的载波。 步骤 4, 当服务基站确定终端能够开始扫描邻基站的载波时, 向终端发 送扫描应答消息, 终端开始扫描邻基站的载波, 并才艮据扫描应答消息决定是 否向服务基站发送扫描报告以及如何发送扫描报告。 通过上述的处理, 使得在终端需要进行基站间载波切换时, 可以通过 MOB SCN-REQ消息向服务基站发送扫描请求信令。 实例 4 下面将以情况二为例对该实例下的处理进行说明, 在本实例中, 多载波 信息由月 务基站通过 MOB NBR - ADV 消息发送到终端, 扫描请求信令由 终端通过新增的 MOB SMC-REQ消息发送给服务基站, 图 6是根据本发明 实施例的实例 4的流程图, 如图 6所示 , 包括以下处理 (步骤 1 -步骤 4 ): 步骤 1 , 支持多载波的服务基站向终端广播邻基站的所有载波信息(上 述多载波信息)。具体地,邻基站的多载波信息可以携带在 MOB— NBR - ADV 消息中, 表 4示出了支持多载波的 MOB— NBR - ADV消息格式 , 其中, 该 消息中的多载波信息包括但不限于以下参数: 邻基站的标识、 前导索引 /子信 道索引、 是否共址指示、 时频同步指示、 是否为全配置载波、 多载波小区中 所包含的载波数量、载波标识( SCID )、载波的频率( SCF )、载波的带宽( SCB ) 等参数 (对应于图 4中的步骤 S402 )。 步骤 2, 当前服务载波不能为终端提供良好的无线条件时, 终端向服务 基站发送扫描请求信令, 请求分配一段时间来扫描邻基站的载波。 具体地, 当终端向 ^^务基站发送扫描邻基站的载波的扫描请求信令时, 可以通过新增 的 MOB— SMC-REQ消息发送扫描请求, 以请求分配扫描区间、 扫描估计时 间、 或推荐开始帧。 MOB— SMC-REQ 消息为新消息, 表 6 示出了支持多载 波的 MOB— SMC-REQ消息格式, 如表 6所示, 可以在 MOB— SMC-REQ消 息中携带以下参数: 1、扫描持续时间( Scan duration ); 2、交替区间( Interleaving interval ); 3、 扫描次数 ( Scan Iteration ); 4、 推荐邻基站载波的个数索引 ( N— Recommended— SMC— Index ),在 N— Recommended— SMC— Index的值等于 OxFF 时, 表示需要使用邻基站载波的位图索引 ( SMC— Bitmap— Index ) 识别 MOB NBR - ADV 消 息 中 的 邻 基 站 载 波 索 引 , 在 N— Recommended— SMC— Index的值不等于 OxFF时, 表示推荐 MOB— NBR - ADV 消 息 中 所推荐的载波数; 5 、 邻基站载波的位 图 大小 ( SMC— Bitmap— Size ), 用于表示邻基站全配置载波位图索引的大小; 6、 邻 基站载波的位图索引 ( SMC— Bitmap— Index ), 用于表示邻基站全配置载波位 图索引; 7、 邻基站载波的索引 ( SMC—BS— Index ), 用于表示 MOB— NBR - ADV消息中邻基站载波的位置索引 (对应于图 4中的步骤 S404 )。 表 6
Figure imgf000021_0001
层 2关联扫描; OblOO— Ob 111 : 保留
}
} else {
for(j = 0; j <
N— Recommended— SMC—
Index; j++){
SMC— BS— Index 8 MOB NBR - ADV 消息中月 务基站 载波相应位置的索引
Req_Seq_Num 1 与每个新消息相联的消息的一位序 列数
Scanning— type 1 0b000: 无关联扫描; 0b001: 层 0关联 扫描; 0b010: 层 1 关联扫描; ObOl l : 层 2关联扫描; OblOO— 0b 111 : 保留
}
}
} 步骤 3 , 当前服务基站收到来自终端的携带有扫描请求信令的 MOB SMC-REQ 消息后, 服务基站根据终端当前正在进行的业务、 和 /或基 站内部的调度算法等, 确定终端是否可以开始扫描邻基站的载波。 步骤 4, 当服务基站确定终端能够开始扫描邻基站的载波时, 向终端发 送扫描应答消息, 终端开始扫描邻基站的载波, 并才艮据扫描应答消息决定是 否向服务基站发送扫描报告以及如何发送扫描报告。 通过上述的处理, 使得在终端需要进行基站间载波切换时, 可以通过新 增的 MOB— SMC-REQ消息向服务基站发送扫描请求信令。 方法实施例三 根据本发明的实施例, 提供了一种基于多载波系统的扫描请求发送方 法, 图 7是才艮据本发明方法实施例三的基于多载波系统的扫描请求发送方法 的流程图, 如图 7所示, 包括以下处理 (步骤 S702 -步骤 S704 ): 步骤 S702 , 终端获取服务基站发送的多载波信息; 具体地, 如果多载波信息为邻基站的多载波信息, 则服务基站可以通过 MOB NBR - ADV 消息发送给终端, 其中, MOB— NBR - ADV 消息中携带 以下参数的至少之一: 邻基站的标识、前导索引 /子信道索引、是否共址指示、 时频同步指示、 是否为全配置载波、 载波的数量、 载波的标识、 载波的频率、 载波的带宽。 如果多载波信息为本基站的多载波信息, 可以由服务基站通过 MOB SMC - ADV消息发送给终端, 其中, MOB— SMC _ ADV 消息中携带 以下参数的至少之一: 基站的载波数量、 全配置载波指示符、 基站的全配置 载波数量、 载波标识、 载波频率、 载波带宽。 步骤 S704, 在终端需要进行基站间载波切换时, 例如, 当服务载波不 能为终端提供良好的无线条件时, 或者服务载波信号强度下降, 终端需要搜 索更好强度的载波时, 终端就会向服务基站发送扫描请求信令, 请求服务基 站分配一段扫描时间 , 终端就可以在月 务基站分配的扫描时间内才艮据多载波 信息扫描邻基站中的载波。 在终端需要进行基站内切换时 , 终端就会向 ^^务基站发送扫描请求信 令, 请求服务基站分配一段扫描时间, 终端就可以在服务基站分配的扫描时 间内根据多载波信息扫描服务基站中的载波。 需要说明的是, 终端可以扫描本基站和邻基站中的全部载波, 也可以扫 描本基站和邻基站中的全配置载波。 具体地, 当终端向^^务基站发送扫描本基站和 /或邻基站的其他载波的 请求时, 可以通过 MOB— SCN-REQ消息, 或新消息 MOB— SMC-REQ消息进 行发送。 此外, 在发送扫描请求信令时, 终端还需要在 MOB— SCN-REQ 消 息或 MOB— SMC-REQ消息中添加终端在扫描基站的载波时所必须的参数 , 例如: 扫描持续时间、 交替区间、 扫描次数、 推荐服务基站载波的个数索引、 基站载波的位图大小、 基站载波的位图索引、 基站载波的索引等参数。 从上面的描述可以看出, 终端向服务基站发送扫描请求信令时, 有以下 两种情况: 情况一, 以 MOB— SCN-REQ 消息发送扫描请求信令。 由于 MOB— SCN-REQ消息中本身就携带有扫描持续时间、 交替区间、 扫描次数等 信息, 因此, 只需在 MOB— SCN-REQ 消息中添加以下参数: 推荐载波的个 数索引、 载波的位图大小、 载波的位图索引、 载波的索引。 情况二, 以新消息 MOB— SMC-REQ消息发送扫描请求信令。 则必须在 MOB SMC-REQ 消息中携带以下的参数: 扫描持续时间、 交替区间、 扫描 次数、 推荐载波的个数索引、 载波的位图大小、 载波的位图索引、 载波的索 引。 在步骤 S104之后, 服务基站就会接收到终端发送的扫描请求信令; 在 月 务基站接收到扫描请求信令后,服务基站首先根据终端的当前状态和 /或基 站内部的调度算法等信息确定终端是否能够开始扫描载波, 在服务基站确定 终端能够开始扫描时, 服务基站向终端发送扫描应答消息, 并在扫描应答消 息中携带分配给终端的扫描时间; 终端接收到扫描应答消息后 , 就会根据服 务基站发送的扫描应答消息在月 务基站分配的扫描时间内对本基站和 /或邻 基站的载波进行扫描。 综上所述, 借助于本发明的技术方案, 通过在终端需要进行切换时, 终 端向服务基站发送扫描请求信令 , 解决了相关技术中终端无法向基站发出扫 描请求的问题,使得终端能够根据需要发送扫描请求信令, 以请求进行切换。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 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^^申和 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. 一种基于多载波系统的扫描请求发送方法, 其特征在于, 包括:
终端获取服务基站发送的所述服务基站的多载波信息; 在需要进行基站内载波切换时 ,所述终端向所述 ^务基站发送扫描 请求信令, 请求扫描所述服务基站的载波。
2. 根据权利要求 1所述的方法, 其特征在于, 所述终端请求扫描所述服务 基站的载波包括:
所述终端请求扫描所述 ^务基站中的全部载波; 或者 , 所述终端请求扫描所述月 务基站中的全配置载波。
3. 才艮据权利要求 1所述的方法, 其特征在于, 所述扫描请求信令携带有以 下至少之一: 扫描持续时间、 交替区间、 扫描次数、 推荐载波的个数索 引、 载波的位图大小、 载波的位图索引、 载波的索引。
4. 一种基于多载波系统的扫描请求发送方法, 其特征在于, 包括:
终端获取月 务基站发送的所述月 务基站的邻基站的多载波信息; 在需要进行基站间切换时 ,所述终端向所述 务基站发送扫描请求 信令, 请求扫描所述邻基站的载波。
5. 根据权利要求 4所述的方法, 其特征在于, 所述终端请求扫描所述邻基 站的载波包括:
所述终端请求扫描所述邻基站中的全部载波; 或者, 所述终端请求扫描所述邻基站中的全配置载波。
6. 才艮据权利要求 4所述的方法, 其特征在于, 所述扫描请求信令携带有以 下至少之一: 扫描持续时间、 交替区间、 扫描次数、 推荐载波的个数索 引、 载波的位图大小、 载波的位图索引、 载波的索引。
7. 一种基于多载波系统的扫描请求发送方法, 其特征在于, 包括: 终端获取服务基站发送的多载波信息;
在需要进行切换时, 所述终端向所述服务基站发送扫描请求信令 , 请求进行载波扫描。
8. 根据权利要求 7所述的方法, 其特征在于, 所述终端获取服务基站发送 的多载波信息包括:
所述终端获取所述月 务基站发送的所述月 务基站的多载波信息;和
/或,
所述终端获取所述月 务基站发送的所述月 务基站的邻基站的多载 波信息。
9. 根据权利要求 7所述的方法, 其特征在于, 在需要进行切换时, 所述终 端发送扫描请求信令, 请求扫描载波包括:
在需要进行基站内载波切换时 ,所述终端向所述 ^务基站发送扫描 请求信令, 请求扫描所述服务基站的载波; 或者,
在需要进行基站间切换时 ,所述终端向所述 务基站发送扫描请求 信令, 请求扫描所述邻基站的载波。
10. 根据权利要求 9所述的方法, 其特征在于,
请求扫描所述 务基站的载波包括: 所述终端请求扫描所述 务基 站中的全部载波; 或者 , 所述终端请求扫描所述月 务基站中的全配置载 波;
请求扫描所述邻基站的载波包括:所述终端请求扫描所述邻基站中 的全部载波; 或者, 所述终端请求扫描所述邻基站中的全配置载波。
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