CN101877902A - Scanning method based on multi-carrier system - Google Patents
Scanning method based on multi-carrier system Download PDFInfo
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- CN101877902A CN101877902A CN2009101357674A CN200910135767A CN101877902A CN 101877902 A CN101877902 A CN 101877902A CN 2009101357674 A CN2009101357674 A CN 2009101357674A CN 200910135767 A CN200910135767 A CN 200910135767A CN 101877902 A CN101877902 A CN 101877902A
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Abstract
The invention discloses a scanning method based on a multi-carrier system. In the method, a service base station of a terminal informs a terminal of carrying out carrier scanning by a scanning message, wherein the scanning message comprises at least one of radio-frequency channel information scanned by the terminal and one or a plurality of carriers needing to be scanned by the terminal. The technical scheme of the invention provides a carrier scanning method based on a multi-carrier system, which enables the terminal to finish scanning on a plurality of carriers of a plurality of base stations in the multi-carrier system and provides a reasonable reference value for carrier switching in and among the base stations of the terminal.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a scanning method based on a multi-carrier system.
Background
The 802.16m system is a multi-carrier system based on Orthogonal Frequency Division Multiple Access (OFDMA), and is an evolution system of the 802.16e system. Fig. 1 is a schematic diagram of a protocol architecture of a multi-carrier system, and as shown in fig. 1, a single Medium Access Control (MAC) entity can Control a Physical layer (PHY) including multiple channels. For example, the PHY includes channel 1 and channel 2.. channel N, and the bandwidth of each channel may be different, such as 5MHz for channel 1, 10MHz for channel 2, and 20MHz for channel N, and the bandwidth of each channel may be a continuous frequency band or a discontinuous frequency band.
Also, the 802.16m system may include one or more fully configured carriers (fullonconfigured carriers) and one or more Partially configured carriers (Partially configured carriers) for downlink transmission, where the fully configured carriers are used to carry the following control information: the system comprises a synchronization control information, a broadcast control information, a multicast control information and a unicast control information, and can also carry information and parameters related to multi-carrier and other carrier operations, and part of configured carriers are used for carrying all control channels supporting downlink transmission. The fully configured carrier may be used as a primary carrier or a secondary carrier of the terminal, and the partially configured carrier may only be used as a secondary carrier of the terminal. In a cell, each terminal corresponds to one primary carrier, and may correspond to one or more secondary carriers, or may not have a secondary carrier, where the primary carrier is used to carry traffic of the terminal, and to carry physical layer control information and medium access control layer control information for controlling the terminal operation, such as network access, and the secondary carrier is used to carry transmission traffic allocated by the base station to the terminal through specific commands and rules, and may also carry control signaling for supporting multi-carrier operation.
In the 802.16e system, as the channel fades or the carrier load increases, the terminal may terminate the connection with the current serving base station and switch to the carrier of other base stations to obtain better Quality of Service (QoS). Before switching, the terminal scans the carriers of the serving base station and the neighboring base station to obtain the channel quality of a plurality of carriers, so as to select a proper target base station for switching. At present, a method for scanning the channel quality of a neighboring base station by a terminal in an 802.16e system is provided, and association can be performed during scanning, so that the terminal obtains and records a ranging parameter and useful service information, and conditions are provided for selecting a target base station and switching to the target base station. In the scanning process, the association is an optional initial ranging process, and the type of scanning may include: scanning (no association), association without base station cooperation, association with base station cooperation, and association with network cooperation.
In the existing technical scheme, no specific solution is given for the scanning method of the 802.16m multi-carrier system.
Disclosure of Invention
The present invention is proposed in view of the problem that the related art cannot perform scanning on an 802.16m multi-carrier system, and therefore, a main object of the present invention is to provide a scanning method based on a multi-carrier system to solve the above problem.
According to an aspect of the present invention, there is provided a scanning method based on a multi-carrier system.
The scanning method based on the multi-carrier system comprises the following steps: a serving base station of a terminal informs the terminal of carrier scanning through a scanning message, wherein the scanning message comprises at least one of the following: radio frequency channel information scanned by the terminal, and one or more carriers to be scanned by the terminal.
Through at least one technical scheme of the invention, the carrier scanning method based on the multi-carrier system is provided, so that the terminal can complete scanning on a plurality of carriers of a plurality of base stations in the multi-carrier system, and a reasonable reference value is provided for carrier switching in the base stations and between the base stations of the terminal.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of the architecture of a multi-carrier system according to the related art;
fig. 2 is a flowchart of a base station-initiated single channel terminal-to-base intra-station carrier scan according to an embodiment of the present invention;
FIG. 3 is a flow diagram of intra-base station carrier scanning for a multi-channel terminal initiated by a base station in accordance with an embodiment of the present invention;
fig. 4 is a flowchart of terminal-initiated single channel terminal-to-base station intra-carrier scanning according to an embodiment of the present invention;
fig. 5 is a flow diagram of terminal-initiated intra-base station carrier scanning for a multi-channel terminal in accordance with an embodiment of the present invention.
Detailed Description
Overview of the function
At present, in a multi-carrier system, a quality of Service (QoS) is reduced due to channel fading, and at this time, a terminal at a cell edge terminates a connection with a current serving base station and switches to a carrier of an adjacent base station to obtain a better QoS; with the increase of the traffic volume and the introduction of new traffic, the load of the carrier where the user in the cell center is located is too heavy, and if the load of other carriers of the service base station of the user is small, the user can switch to other carriers of the service base station to ensure the system load balance. In addition, different carriers of the non-continuous frequency band may generate fading of different degrees, and if the channel quality of the carrier where the user is located is degraded, the carrier of the user may also be switched to other carriers with better channel quality of the serving base station to meet the QoS requirement of the user. Based on this, the invention provides a scanning method based on a multi-carrier system, which prepares for the base station switching of a terminal.
The present invention will be described in detail below with reference to the accompanying drawings.
Method embodiment
According to an embodiment of the present invention, a scanning method based on a multi-carrier system is provided.
The scanning method based on the multi-carrier system according to the embodiment comprises the following steps: a serving base station of a terminal informs the terminal of carrier scanning through a scanning message, wherein the scanning message comprises at least one of the following: radio frequency channel information scanned by the terminal, and one or more carriers to be scanned by the terminal. The terminal can then scan one or more carriers according to the scan message and using the radio frequency channel indicated in the radio frequency channel information. Preferably, the base station may transmit the scan message to the terminal through a primary carrier of the terminal.
Preferably, the scan message may further include at least one of: scanning start time, scanning interval, scanning result reporting rule, type of report value to be reported and scanning type. Wherein the report value type may include at least one of: carrier to interference plus noise ratio, received signal strength indication, relative delay, round trip delay.
In addition, in the case that the channel scanned by the terminal and the radio frequency channel used by the terminal for communicating with the serving base station are the same channel (that is, the terminal has only one radio frequency channel, and the channel is used for both normal communication between the terminal and the base station and scanning of the terminal), the scanning message may further include a non-scanning interval and a repetition number.
Wherein the scan type indicated in the scan message may include at least one of: scanning only, association without base station cooperation, association with network cooperation.
For each base station that the terminal needs to scan, the serving base station needs to inform the terminal of the scanning types of these base stations that need to scan. Moreover, for each base station that the terminal needs to scan, the scanning types of all carriers on the base station are the same or different, that is, all carriers on the base station may use the same scanning mode, or different scanning modes may be used for different carriers (for example, one part of carriers uses scanning mode 1, and another part of carriers uses scanning mode 2).
In addition, if the scanning type is association without base station cooperation or association with network cooperation, the scanning message may further include association information, where the association information specifically may include: association level, time when association is performed, dedicated ranging code used for performing association, and dedicated ranging resource information.
At this time, the terminal may send a dedicated ranging code to the base station to which the carrier associated with the terminal belongs on the dedicated ranging resource of the carrier to be scanned at a predetermined association time according to the association information; when the scanning type is association of network cooperation, the base station may send a ranging result of the terminal to the serving base station through a backbone network, where the ranging result includes: the terminal executes time adjustment information, frequency adjustment information, power adjustment information, ranging state, services which can be provided by the carrier waves and the like on the carrier waves associated with network coordination; finally, the serving base station may send the ranging result to the terminal.
In addition, the one or more carriers that the terminal needs to scan may include: the serving base station determines a bitmap of a base station and/or an identifier of the base station that the terminal needs to scan, and the scanning, by the terminal, of one or more carriers by using a radio frequency channel includes: the terminal scans partial or all carriers of the base station corresponding to the bitmap of the base station and/or the identification of the base station; and/or, the serving base station determines a bitmap of a base station and/or an identifier of the base station that the terminal needs to scan, and an identifier of a carrier that needs to be scanned under the base station and corresponds to the bitmap of the base station and/or the identifier of the base station, and then the terminal scans one or more carriers by using a radio frequency channel includes: and the terminal scans the carrier corresponding to the carrier identifier under the base station corresponding to the bitmap of the base station and/or the identifier of the base station.
Before the serving base station terminal notifies the terminal of carrier scanning through the scanning message, the terminal may obtain the configuration information of the carrier, and the specific process is as follows: the terminal acquires carrier configuration information of a serving base station and carrier set information distributed to the terminal by the serving base station through broadcast information, wherein the carrier configuration information comprises: physical frequency point information and identification of one or more available carriers in a service base station, and configuration information of each available carrier; the terminal acquires carrier configuration information of a neighbor cell base station through neighbor cell broadcast information, wherein the neighbor cell base station means: the carrier configuration information comprises, in a set of base stations adjacent to the serving base station: the physical frequency point information and the identification of one or more available carriers in the neighbor cell base station, and the configuration information of each available carrier.
And, the serving base station may select one or more carriers to be scanned among predetermined carriers, where the predetermined carriers may include at least one of: all fully configured carriers and part or all of all partially configured carriers which are supported by the terminal under the serving base station and are not used by the terminal currently, all fully configured carriers and part or all of partially configured carriers of the neighbor base station, and part or all of carriers in the base station of which the terminal knows the base station identifier.
In the embodiment of the present invention, the scanning may be initiated by the base station or the terminal, and the following describes two different initiation manners:
(mode one) terminal-initiated scanning
The terminal finds that the preset trigger condition is met, the terminal sends a scanning request message to the service base station, and the service base station sends the scanning message to the terminal according to the scanning request message, wherein the scanning message can be regarded as a response message of the scanning request message;
(mode two) initiating scanning by the base station
And the service base station sends a scanning request message to the terminal to trigger the terminal to scan when finding that the preset triggering condition is met.
In the first and second manners, the serving base station needs to first set a predetermined trigger condition, where the predetermined trigger condition includes one of the following: the measured value of the carrier currently used by the terminal is less than or equal to a preset measured value threshold, and the load value of the carrier currently used by the terminal is greater than or equal to a preset load value threshold.
And, for a carrier belonging to the serving base station, the predetermined trigger condition thereof is the same as or different from the predetermined trigger condition of the carrier of other base station (which may be a base station of a cell in the neighbor list of the serving base station); wherein the predetermined trigger condition for scanning the carrier belonging to the serving base station and the predetermined trigger condition for scanning the carrier belonging to the other base station are the same as each other: the predetermined measurement value threshold when scanning the base station is equal to the predetermined measurement value threshold when scanning other base stations, or the predetermined load value threshold when scanning the base station is equal to the predetermined load value threshold when scanning other base stations.
For example, for a carrier belonging to the serving base station, the predetermined trigger condition is set to a predetermined measurement value threshold a and/or a predetermined load value threshold B, and the predetermined trigger condition of the carrier under the other base station may be the same as the trigger condition of the carrier of the serving base station, that is, if the predetermined trigger condition of the other base station is a and/or B, the trigger condition of the other base station is considered to be the same as the trigger condition of the serving base station; furthermore, the predetermined trigger condition of the other base station is different from the predetermined trigger condition of the serving base station if the predetermined measurement value threshold is not a and/or the predetermined load value threshold is not B in the predetermined trigger condition of the other base station.
For the first mode, if the scanning is initiated by the terminal, the terminal needs to pass the parameter information of the scanning that the terminal desires through the scanning request message, and the scanning request message includes at least one of the following information: an identification of a radio frequency channel that the terminal desires to use for scanning, one or more base stations that the terminal desires to scan, a scanning interval that the terminal desires, a non-scanning interval that the terminal desires, a number of repetitions that the terminal desires, a type of scanning that the terminal desires.
For a bitmap of a base station and/or an identifier of the base station that the terminal desires to scan, the terminal may scan one or more carriers by using a radio frequency channel, which specifically includes: the terminal scans partial or all carriers of the base station corresponding to the bitmap of the base station and/or the identification of the base station; and/or the presence of a gas in the gas,
the terminal desires to scan a bitmap of a base station and/or an identifier of the base station, and an identifier of a carrier needing to be scanned under the base station corresponding to the bitmap of the base station and/or the identifier of the base station, and then the terminal scans one or more carriers by using a radio frequency channel includes: and the terminal scans the carrier corresponding to the carrier identifier under the base station corresponding to the bitmap of the base station and/or the identifier of the base station.
For each base station that the terminal requests to scan, the scanning types of all carriers on the base station that the terminal requests are the same or different from each other, for example, the terminal may request to scan in scanning mode 1 on a part of carriers of the base station and scan in scanning mode 2 on another part of carriers of the base station.
It should be noted that, regardless of the first or second manner (i.e., regardless of whether the scanning is initiated by the serving base station or whether the terminal notifies the serving base station of its desired scanning parameters through a scanning message to trigger the scanning), the relevant parameters required by the terminal when performing the scanning are determined by the serving base station, that is, the serving base station may not employ the parameters carried in the scanning request message sent by the terminal.
In addition, in the method, the terminal can perform capability negotiation with the serving base station, and inform the serving base station of the radio frequency channel identifier of the terminal in the capability negotiation process; the service base station stores the mapping information of the identifier of the terminal and the notified radio frequency channel identifier, and the mapping information of the currently working radio frequency channel of the terminal and the currently working carrier wave of the terminal.
After the scanning is finished, the terminal may send the scanning result to the serving base station through the main carrier of the terminal according to the scanning result reporting rule, where the scanning result includes: reporting the mode, reporting the value type and measuring result after the terminal scans one or more carriers; and the service base station selects a target carrier for the terminal according to the scanning result.
Through the technical scheme provided by the embodiment of the invention, the terminal can complete scanning on a plurality of carriers of a plurality of base stations in a multi-carrier system, and a reasonable reference value is provided for carrier switching in the base stations and between the base stations of the terminal.
The scan request message or the scan response message in the method according to the present embodiment will be described below with reference to specific examples. Among them, in various message formats described hereinafter, some parameters in the scan request message or the scan response message may not be specified.
Table 1 is an example of a scanning carrier list corresponding to a scanning request message according to the present invention, in this example, a scanning type may be set for each carrier of a neighboring base station, and unrelated scanning is performed on carriers of a serving base station (that is, the scanning type of the carrier of the serving base station is different from the scanning type of the carrier of the neighboring base station, and different carriers in one neighboring base station may correspond to different scanning types). Specifically, a scanning request message of a terminal (single-radio MS) that starts a single channel needs to set a scanning interval, a non-scanning interval, and a repetition number, where the entire scanning duration is a product of a sum of the scanning interval and the non-scanning interval and the repetition number; the scan request message for turning on a multi-channel terminal (multi-radio MS) may not set the non-scan interval and the number of repetitions, and in this case, the entire scan duration is the value of the scan interval.
TABLE 1
Table 2 is another example of the scan carrier list corresponding to the scan request message according to the present invention, in this embodiment, the same scan type is set for all carriers of the neighboring base station, and unrelated scan is performed on the carriers of the serving base station (that is, the same scan type is set for all carriers of all neighboring base stations, the scan types set for all carriers of the serving base station are the same, and the scan type set for the carrier of the serving base station may be different from the scan type set for the carrier of the neighboring base station). Specifically, the scanning request message for starting the terminal in the single channel needs to set the scanning interval, the non-scanning interval, and the repetition number, and the scanning request message for starting the terminal in the multiple channels may not set the non-scanning interval and the repetition number.
TABLE 2
Table 3 is an example of a scanning carrier list corresponding to the scanning response message according to the present invention, in this embodiment, the same scanning type is used for carriers of the neighboring base station, and unrelated scanning is used for carriers of the serving base station (that is, the same scanning type is set for all carriers of all neighboring base stations, the scanning types set for all carriers of the serving base station are the same, and the scanning manner set for the carriers of the serving base station may be different from the scanning type set for the carriers of the neighboring base station). The same report value type is used for all base stations. Specifically, in the case of a single-channel terminal, the scanning interval, the non-scanning interval, and the number of repetitions need to be set in the scanning message, and in the case of a multi-channel terminal, the non-scanning interval and the number of repetitions may not be set.
TABLE 3
Table 4 is another example of a scan carrier list corresponding to the scan response message according to the present invention, in this embodiment, unrelated scanning is performed on carriers of both the serving base station and the neighbor base station. The same report value type is used for all base stations.
TABLE 4
Table 5 is a list corresponding to the association report transmitted by the serving base station to the terminal according to the present invention.
TABLE 5
Table 6 is a list corresponding to a scanning report message sent by the terminal to the serving base station according to the present invention, after the scanning is completed, the terminal reports the scanning result to the base station according to the reporting rule, and the result is used as one of the reference values of the base station when selecting the target carrier.
TABLE 6
The scanning method of the present invention will be described in detail with reference to specific examples.
Example 1
Fig. 2 is a flowchart of intra-base station carrier scanning of a single-channel terminal initiated by a base station according to the present invention, as shown in fig. 2, including the following steps:
Step 3, when the scanning start time is up, the terminal scans each carrier in the carrier list to be scanned through the single radio frequency channel in a scanning interval, and specifically, the terminal scans the carriers according to the information in the report value type to be reported; and communication with the serving base station is continued for a non-scanning interval, and when the scanning time is reached, the scanning is ended.
And 4, reporting the scanning result to the base station by the terminal according to a preset reporting rule.
Through the processing, the scanning of the single-channel terminal carrier to other carriers in the base station is realized.
Example 2
Fig. 3 is a flowchart of carrier scanning in a serving base station of a multi-channel terminal initiated by the serving base station according to the present invention, which includes the following steps:
And 3, at the preset scanning starting time, the terminal scans the preset carrier wave by utilizing one channel in the scanning interval and keeps contact with the service base station on the other channel. And when the scanning time length reaches a preset value, ending the scanning.
And 4, reporting the scanning result to the base station by the terminal according to a preset reporting rule.
Through the processing, the scanning of the multi-channel terminal carrier to other carriers in the base station is realized.
Example 3
Fig. 4 is a flow chart of terminal-initiated single channel terminal-to-serving base station intra-carrier scanning according to the present invention.
And 2, when the terminal initiates scanning, sending a scanning request message, wherein the message carries radio frequency channel information which the terminal wants to use for scanning, a list of carriers needing scanning, scanning start time, scanning interval, non-scanning interval, repetition times and other parameters.
Step 3, the service base station responds to the terminal according to the request message of the terminal, except setting the scanning parameters requested by the terminal, and also needs to set parameters such as a reporting rule of a scanning result, a report value type to be reported, a scanning type, and associated information during scanning in the response message;
and 4, at the preset scanning starting time, the terminal scans the preset carrier wave in the scanning interval, continues the communication with the service base station in the non-scanning interval, and finishes the scanning when the scanning duration reaches the preset value.
And 4, reporting the scanning result to the base station by the terminal according to a preset reporting rule.
Through the processing, the scanning of the single-channel terminal carrier to other carriers in the base station is realized.
Example 4
FIG. 5 is a flow chart of terminal initiated intra-serving base station carrier scanning for a multi-channel terminal according to the present invention
And step 2, when the terminal initiates scanning, the terminal sends a scanning request message, and the message carries the radio frequency channel information used for scanning by the terminal, a list of carriers to be scanned, scanning start time, scanning interval and other parameters.
Step 3, the service base station responds to the terminal according to the request message of the terminal, except setting the scanning parameters requested by the terminal, and also needs to set parameters such as a reporting rule of a scanning result, a report value type to be reported, a scanning type, and associated information during scanning in the response message;
and 4, at the preset scanning starting time, the terminal scans the preset carrier wave by utilizing one channel in the scanning interval and keeps contact with the service base station on the other channel. And when the scanning time length reaches a preset value, ending the scanning.
And step 5, the terminal reports the scanning result to the base station according to a preset reporting rule.
Through the processing, the scanning of the multi-channel terminal carrier to other carriers in the base station is realized.
In summary, with the technical solution of the present invention, the method for switching carriers in a base station of the present invention enables a terminal to perform seamless switching between carriers in the base station in a multi-carrier system, ensures service continuity of the terminal, and eliminates delay of carrier switching.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (21)
1. A method for scanning based on a multi-carrier system, comprising:
a serving base station of a terminal informs the terminal of carrier scanning through a scanning message, wherein the scanning message comprises at least one of the following: the terminal scans the radio frequency channel information and one or more carriers which the terminal needs to scan.
2. The method of claim 1, further comprising:
and the terminal scans the one or more carriers by using the radio frequency channel indicated in the radio frequency channel information according to the scanning message.
3. The method of claim 1, wherein the scan message further comprises at least one of: scanning start time, scanning interval, scanning result reporting rule, type of report value to be reported and scanning type.
4. The method according to claim 3, wherein the scanning message further includes a non-scanning interval and a repetition number in case that a channel scanned by the terminal and a radio frequency channel used by the terminal for communicating with the serving base station are the same channel.
5. The method of claim 3, wherein the scan type comprises at least one of: scanning only, association without base station cooperation, association with network cooperation.
6. The method according to claim 5, wherein the serving base station indicates, to the terminal, a scanning type corresponding to a carrier in each base station that needs to be scanned, and wherein the scanning types of all carriers on each base station indicated by the serving base station are the same or different.
7. The method of claim 5, wherein the scanning message further comprises association information if the scanning type is association without base station cooperation or association with network cooperation, wherein the association information comprises: association level, time when association is performed, dedicated ranging code used for performing association, and dedicated ranging resource information.
8. The method of claim 7, further comprising:
the terminal sends the special ranging code to an associated base station associated with the terminal on the special ranging resource at a preset associated time according to the associated information;
when the scanning type is the association of network cooperation, the associated base station sends the ranging result of the terminal to the serving base station through a backbone network, wherein the ranging result comprises: the terminal executes time adjustment information, frequency adjustment information, power adjustment information, ranging state and services which can be provided by the carrier waves and are related to network coordination;
and the service base station sends the ranging result to the terminal.
9. The method of claim 3, wherein the report value type comprises at least one of: carrier to interference plus noise ratio, received signal strength indication, relative delay, round trip delay.
10. The method of claim 1, wherein the one or more carriers that the terminal needs to scan comprise:
the serving base station determines a bitmap of a base station and/or an identifier of the base station that the terminal needs to scan, and the scanning, by the terminal, of the one or more carriers by using the radio frequency channel includes: the terminal scans part or all carriers of the base station corresponding to the bitmap of the base station and/or the identification of the base station; and/or the presence of a gas in the gas,
the serving base station determines a bitmap of a base station and/or an identifier of the base station that the terminal needs to scan, and an identifier of a carrier that needs to be scanned under the base station and corresponds to the bitmap of the base station and/or the identifier of the base station, and then the terminal scans the one or more carriers by using the radio frequency channel includes: and the terminal scans the carrier corresponding to the carrier identifier under the base station corresponding to the bitmap of the base station and/or the identifier of the base station.
11. The method according to any of claims 1 to 10, wherein before the serving base station terminal informs the terminal of carrier scanning by a scanning message, the method further comprises:
the terminal acquires carrier configuration information of the serving base station and carrier set information allocated to the terminal by the serving base station through broadcast information, wherein the carrier configuration information comprises: physical frequency point information and identification of one or more available carriers in the serving base station, and configuration information of each available carrier;
the terminal acquires carrier configuration information of a neighbor cell base station through neighbor cell broadcast information, wherein the neighbor cell base station is as follows: a set of base stations neighboring the serving base station, the carrier configuration information including: and the physical frequency point information and the identification of one or more available carriers in the neighboring base station and the configuration information of each available carrier.
12. The method of claim 11, further comprising:
the serving base station selects one or more carriers needing to be scanned from predetermined carriers, wherein the predetermined carriers include at least one of the following: all fully configured carriers and part or all of all partially configured carriers which are supported by the terminal and are not used by the terminal at present under the serving base station, all fully configured carriers and part or all of partially configured carriers of the neighboring base station, and part or all of carriers in the base station of which the terminal knows the base station identifier.
13. The method according to any of claims 1 to 10, wherein the serving base station notifying the terminal through the scan message comprises: and the service base station sends the scanning message to the terminal through the main carrier wave of the terminal.
14. The method according to any of claims 1 to 10, wherein the base station notifying the terminal of carrier scanning through the scanning message comprises:
the terminal finds that a preset trigger condition is met, a scanning request message is sent to the service base station, and the service base station sends the scanning message to the terminal according to the scanning request message; or,
and the service base station sends the scanning request message to the terminal when finding that a preset triggering condition is met.
15. The method of claim 14, further comprising:
the serving base station sets the predetermined trigger condition, wherein the predetermined trigger condition comprises one of: the measurement value of the carrier currently used by the terminal is less than or equal to a preset measurement value threshold, and the load value of the carrier currently used by the terminal is greater than or equal to a preset load value threshold.
16. The method of claim 15,
the predetermined trigger condition for the terminal to scan the carriers belonging to the serving base station and the predetermined trigger condition for the terminal to scan the carriers belonging to other base stations are the same or different from each other;
wherein the predetermined trigger condition for scanning the carrier belonging to the serving base station and the predetermined trigger condition for scanning the carrier belonging to the other base station are the same as each other: and the preset measurement value threshold when scanning the base station is equal to the preset measurement value threshold when scanning other base stations, or the preset load value threshold when scanning the base station is equal to the preset load value threshold when scanning other base stations.
17. The method of claim 14, wherein the scan request message comprises at least one of the following information: an identification of a radio frequency channel that the terminal desires to use for scanning, one or more carriers that the terminal desires to scan, a scanning interval that the terminal desires, a non-scanning interval that the terminal desires, a number of repetitions that the terminal desires, a type of scanning that the terminal desires.
18. The method of claim 17, wherein the one or more carriers that the terminal wishes to scan comprises:
if the terminal desires to scan the bitmap of the base station and/or the identifier of the base station, the scanning, by the terminal, of the one or more carriers by using the radio frequency channel includes: the terminal scans part or all carriers of the base station corresponding to the bitmap of the base station and/or the identification of the base station; and/or the presence of a gas in the gas,
the terminal desires to scan a bitmap of a base station and/or an identifier of the base station, and an identifier of a carrier needing to be scanned under the base station corresponding to the bitmap of the base station and/or the identifier of the base station, and the scanning, by the terminal, of the one or more carriers by using the radio frequency channel includes: and the terminal scans the carrier corresponding to the carrier identifier under the base station corresponding to the bitmap of the base station and/or the identifier of the base station.
19. The method according to claim 18, wherein for each base station requested by the terminal to scan, the scanning types of all carriers on the base station requested by the terminal are the same or different from each other, all carriers requested by a base station are the same scanning type, or each carrier requested by a base station has its own scanning type.
20. The method according to any one of claims 1 to 10, further comprising:
the terminal and the service base station carry out capability negotiation and inform the service base station of the radio frequency channel identification of the terminal in the capability negotiation process;
the service base station stores the identifier of the terminal and the mapping information of the notified radio frequency channel identifier and the mapping information of the currently working radio frequency channel of the terminal and the currently working carrier wave of the terminal.
21. The method of any one of claims 3 to 10, wherein after the scanning is complete, the method further comprises:
the terminal sends the scanning result to the serving base station through the main carrier of the terminal according to the scanning result reporting rule, wherein the scanning result comprises: a reporting mode, a reporting value type and a measurement result after the terminal scans the one or more carriers;
and the service base station selects a target carrier for the terminal according to the scanning result.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101357674A CN101877902A (en) | 2009-04-28 | 2009-04-28 | Scanning method based on multi-carrier system |
| PCT/CN2010/070792 WO2010124536A1 (en) | 2009-04-28 | 2010-02-26 | Scanning method based on a multi-carrier system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101357674A CN101877902A (en) | 2009-04-28 | 2009-04-28 | Scanning method based on multi-carrier system |
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| CN101877902A true CN101877902A (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101357674A Pending CN101877902A (en) | 2009-04-28 | 2009-04-28 | Scanning method based on multi-carrier system |
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| Country | Link |
|---|---|
| CN (1) | CN101877902A (en) |
| WO (1) | WO2010124536A1 (en) |
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| WO2010124536A1 (en) | 2010-11-04 |
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