WO2011153793A1

WO2011153793A1 - Method and apparutus for selecting signaling data bearing cerriers

Info

Publication number: WO2011153793A1
Application number: PCT/CN2010/079064
Authority: WO
Inventors: 王成
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-06-10
Filing date: 2010-11-24
Publication date: 2011-12-15
Also published as: CN101867454B; CN101867454A

Abstract

A method and an apparatus for selecting signaling data bearing carriers are disclosed in the present invention. The method for selecting the signaling data bearing carriers includes that: a current available carrier set of a terminal changes (S502); an access network acquires the grade of each carrier in the current available carrier set of the terminal (S504); the access network selects the carrier with the highest grade from the current available carrier set as the bearing carrier of the signaling data for the terminal (S506). With the present invention, when the available carriers for the terminal are increased or deleted, the carrier with the highest grade is timely selected from the current available carrier set of the terminal to substitute for the bearing carrier of the current signaling data, which thereby ensures that the signaling data of the access network can be transmitted accurately and efficiently to the terminal.

Description

The present invention relates to the field of communications, and in particular to a method and apparatus for selecting a carrier data carrier. BACKGROUND OF THE INVENTION Signaling fragment data arriving in an out-of-order manner in an air interface protocol is discarded. Therefore, the signaling data is required to arrive at the receiving end reliably and without disorder. However, if the signaling data is transmitted on multiple carriers, the signaling fragments are likely to arrive at the receiving end (ie, the terminal) out of order. 1 is a schematic diagram of signaling data transmitted on multiple carriers in the related art. As shown in FIG. 1, when the terminal reassembles signaling fragments, it finds out-of-order data, discards the data, and clears the buffer. Zone, resulting in loss of signaling data. Therefore, it is necessary to ensure that signaling data is transmitted on a single carrier in a multi-carrier system. However, in a multi-carrier system in which the reverse link is symmetric, the available carriers of the terminal are changed. For example, when the terminal detects that it can accommodate more carriers, the access network (Access Network, referred to as AN) Request to add carrier; If the terminal is assigned multiple reverse CDMA channels, when the terminal does not have enough power to maintain all allocated reverse CDMA channels, it will request the AN to remove a certain carrier. When the terminal requests to remove a certain carrier, the removed carrier may be the carrier that currently carries the signaling data. If the access network continues to use the carrier to carry the signaling data, the terminal will not receive the signaling data; When a carrier is used, the added carrier may be better than the carrier that currently carries the signaling data. If the carrier is used to carry the signaling data, the efficiency of signaling data transmission will not be high. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method and apparatus for selecting a signaling data carrier carrier to solve at least the above problems. According to an aspect of the present invention, a method for selecting a signaling data bearer carrier is provided, including: changing a current available carrier set of a terminal; and obtaining, by the access network, a currently available carrier set of the terminal The level of each carrier in the medium; the access network selects the carrier with the highest rank from the currently available carrier set as the bearer carrier of the signaling data of the terminal. Further, the change of the currently available carrier set of the terminal includes: after establishing a connection with the access network, the terminal sends a request to the access network according to its wireless environment and processing capability, requesting to increase its available carrier or remove the available carrier set. Carrier; After receiving the request, the access network updates the currently available carrier set of the terminal according to the request. Further, the access network obtains the level of each carrier in the currently available carrier set includes: The access network divides the level of each carrier in the currently available carrier set according to the following rules: the carrier carrying the control channel has the highest rank; the hotspot carrier ranks the second; The non-hotspot area carrier has the lowest level. Further, the access network acquires the level of each carrier in the currently available carrier set, and further includes at least one of the following: the carrier corresponding to the pilot with the same coverage is of the same level; the carrier of the same frequency has multiple pilots, and each guide The level of the carrier corresponding to the frequency is not the same, and the lowest level is selected as the level of the carrier of the frequency. Further, the number of carriers with the highest available carrier concentration level is multiple; the carrier with the highest ranked carrier as the signaling data of the terminal includes: the carrier that is recently captured by the selected terminal among the multiple carriers with the highest selection level of the access network As a carrier carrier. Further, after the access network selects the carrier as the bearer carrier of the signaling data of the terminal, the method further includes: during the handover process of the terminal, if the bearer carrier of the current signaling data times out, the current available carrier is concentrated. The carrier with the highest rank except the carrier carrier is selected as the carrier carrier of the signaling data. Further, after the access network successfully establishes a link with the terminal on the selected carrier, the method further includes: Step 1: determining whether the current serving carrier of the terminal is valid, if yes, performing step 2; otherwise, performing step 4 Step 2: determining whether there is data transmission on the current service carrier, if yes, performing step 3; otherwise, performing step 4; Step 3, buffering the carrier identifier of the selected carrier, waiting for the current service carrier data to be sent, performing Step 4: Step 4: The selected carrier is used as the current serving carrier. According to another aspect of the present invention, a signaling data carrier carrier selection apparatus is provided, including: a carrier level division and storage module, configured to determine and save a level of each carrier in a currently available carrier set of the terminal, and at the current The carrier selection module is triggered when the available carrier set changes; the carrier selection module is configured to select the carrier with the highest rank from the currently available carrier set as the terminal Let the data carry the carrier. Further, if the number of carriers with the highest available carrier concentration level is multiple, the carrier selection module selects, from among the multiple carriers, the carrier that is recently captured by the terminal as the bearer carrier. Further, the device further includes: a signaling data sending module, configured to send signaling data of the terminal on the carrier carrier selected by the carrier selection module. Further, the signaling data sending module includes: a first determining module, configured to determine whether the current serving carrier of the terminal is invalid, and if yes, triggering a carrier replacement module; otherwise, triggering a second determining module; Determining whether there is data transmission on the current service carrier, if yes, triggering the cache module; otherwise, triggering the carrier replacement module; the cache module is configured to buffer the identifier of the carrier carrier selected by the carrier selection module, and send data on the current service carrier After the completion, the carrier replacement module is triggered; the carrier replacement module is configured to use the carrier carrier selected by the carrier selection module as the current serving carrier of the terminal. According to the present invention, when the current available carrier set of the terminal changes, the access network acquires the level of each carrier in the currently available carrier set, and selects the carrier with the highest rank as the carrier carrier of the signaling data of the terminal, thereby making the terminal at the terminal When the available carrier is added or deleted, the carrier with the highest level of carrier can be selected from the currently available carrier set of the terminal in time to replace the bearer carrier of the current signaling data, thereby ensuring that the signaling data of the access network can be accurately and efficiently sent to the terminal. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of signaling data transmitted on multiple carriers in the related art; FIG. 2 is a schematic structural diagram of a signaling data carrier carrier selection apparatus according to an embodiment of the present invention; FIG. 3 is a preferred embodiment according to the present invention. FIG. 4 is a schematic structural diagram of a signaling data sending module according to a preferred embodiment of the present invention; FIG. FIG. 5 is a flowchart of a method for selecting a signaling data carrier carrier according to an embodiment of the present invention; FIG. 6 is a flowchart of an example of signaling data carrier carrier selection according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 2 is a schematic structural diagram of a signaling data carrier carrier selection apparatus according to an embodiment of the present invention. The apparatus is located in an access network, and the apparatus includes: a carrier level division and storage module 10, configured to determine and save a currently available carrier of the terminal. Concentrating the level of each carrier, and triggering the carrier selection module 20 when the currently available carrier set of the terminal changes; the carrier selection module 20 is coupled to the carrier class division and storage module 10 for selecting a level from the currently available carrier set. The highest carrier is used as the bearer carrier for the signaling data of the terminal. For example, the carrier class division and storage module 10 may establish a connection between the access network and the terminal, and the carrier class division and storage module 10 may establish a corresponding relationship with the terminal, where the carrier currently stores the available carrier of the terminal and The level of each carrier. When the terminal determines to send a request for adding a carrier or a request for removing a carrier to the access network according to the wireless environment and processing capability of the terminal, the carrier class division and storage module 10 updates the current available of the terminal according to the request of the terminal. Carrier set, and update the level of each carrier in the carrier set, and then trigger the carrier selection module

20 selects the carrier with the highest rank as the bearer carrier of the signaling data of the terminal. In the related art, when the access network adds or deletes the currently available carrier in the terminal, the bearer carrier of the signaling data of the terminal is not replaced, which may result in the terminal not receiving the signaling data or receiving the signaling data. . In the foregoing apparatus provided by the embodiment of the present invention, the carrier class division and storage module 10 determines and stores the level of each carrier currently available to the terminal, and notifies the carrier selection module 20 to select from the currently available carriers when the currently available carrier changes. The carrier with the highest level is used as the bearer carrier of the signaling data of the terminal, so that the carrier that sends the signaling data of the access network is the effective and optimal carrier of the terminal, thereby ensuring that the terminal can receive the signaling data accurately and effectively. Preferably, when the number of carriers with the highest available carrier concentration level is multiple, the carrier selection module 20 may select a carrier that is the most recently captured carrier of the terminal as the bearer carrier of the signaling data. In a specific application, when the terminal captures the carrier, it reports to the access network, so that the access network can learn the carrier recently captured by the terminal. This maximizes the guaranteed carrier carrier to be available. FIG. 3 is a schematic structural diagram of a signaling data carrier carrier selection apparatus according to a preferred embodiment of the present invention. As shown in FIG. 3, the apparatus may further include: a signaling data sending module 30, configured to be selected by the carrier selection module 20. The signaling data of the transmitting terminal on the carrier is carried. 4 is a schematic structural diagram of a signaling data sending module according to a preferred embodiment of the present invention. As shown in FIG. 4, the signaling data sending module 30 may include: a first determining module 310, configured to determine whether the current serving carrier of the terminal is invalid. (ie, whether the current serving carrier is in the currently available carrier set of the terminal), if yes, triggering the carrier replacement module 320, otherwise, triggering the second determining module 330; the second determining module 330 is configured to determine the current serving carrier of the terminal. Whether there is data transmission, if yes, the buffer module 340 is triggered, otherwise, the carrier replacement module 320 is triggered; the buffer module 340 is configured to cache the identifier of the carrier selected by the carrier selection module 20, and is on the current service carrier of the terminal. After the data transmission is completed, the carrier replacement module 320 is triggered; the carrier replacement module 320 is configured to use the carrier carrier selected by the carrier selection module 20 as the current serving carrier of the terminal. This ensures that the data on the current monthly carrier can be completely sent to the terminal to avoid data loss. FIG. 5 is a flowchart of a method for selecting a signaling data carrier carrier according to an embodiment of the present invention, which mainly includes the following steps: Step S502: A current available carrier set of the terminal changes; for example, after the terminal establishes a connection with the access network, When the terminal is in the handover area, during the handover process, the terminal determines to add or delete an available carrier according to the wireless environment and processing capability in which it is located, sends a request to the access network, requests to increase the available carrier, or deletes the currently available carrier set. After receiving the request of the terminal, the access network completes the process of adding a carrier or de-carrier, and updates the carrier level division and the currently available carrier set of the terminal stored in the storage module 10. Step S504, the access network acquires a level of each carrier in the currently available carrier set of the terminal;

After updating the currently available carrier set of the terminal, the carrier classifying and the storage module 10 divides the level of each carrier in the currently available carrier set. For example, the carrier class division and storage module 10 may divide the currently available carrier of the terminal according to the following principles. The level of each carrier in the set:

(1) The carrier specified as carrying the control channel has the highest rank;

(2) The level of the hotspot carrier is second;

(3) The non-hotspot area carrier has the lowest level. In addition, when the carrier class division and the storage module 10 divide the level of each carrier, the dividing rule may further include: allocating the same level to the carriers corresponding to the pilots having the same coverage; and/or, the carrier of the same frequency point has A plurality of pilots, and the levels of the corresponding carriers of the respective pilots are different, and the lowest level is selected as the level of the carrier of the frequency. For example, different base stations may transmit pilots at the same frequency point, and the pilots transmitted by the respective base stations are different. The terminal at a certain location may receive the pilots sent by the respective base stations at the frequency point, and the terminal will be at The pilot station receives the pilot report to the access network, and the access network can determine the level of the carrier transmitted by the base station at the frequency point according to each pilot. If the level of each carrier is different, the carrier class division and storage module 10 The lowest level among them is the level of the carrier of the frequency. This ensures that the last selected carrier is the carrier that can establish a connection with the terminal. Step S506: The access network selects the carrier with the highest rank from the currently available carrier set as the bearer carrier of the signaling data of the terminal. Preferably, when the carrier selection module 20 selects the carrier with the highest level, if the carrier with the highest available carrier concentration level includes more than one, the carrier selection module 20 preferably selects the carrier recently captured by the terminal as the carrier carrier of the signaling data. This ensures that the selected carrier is a carrier that can establish a connection with the terminal. Preferably, after the carrier selection module 20 selects the bearer carrier of the signaling data, if the terminal transmits the multicast timeout of the current signaling data, the carrier selection module 20 obtains the remaining currently available carrier set (ie, The carrier with the highest rank is reselected in the carrier set that does not include the previously selected carrier to carry signaling data. This ensures that subsequent signaling data can be successfully sent to the terminal. Preferably, if the access network establishes a successful connection with the terminal on the selected carrier, the access network sends signaling data to the terminal on the carrier. Preferably, the signaling data sending module may send the signaling data to the terminal according to the following manner: determining whether the current monthly service carrier of the terminal is invalid, or the current monthly service carrier is valid but there is currently no data to be sent, then the carrier selection module is immediately The selected carrier of 20 is used as the current serving carrier of the terminal; if the current serving carrier is valid, but there is currently data to be transmitted, the carrier ID selected by the buffer carrier selecting module 20 is waited for, after waiting for the data on the current serving carrier to be transmitted, the carrier is further The carrier selected by module 20 is selected as the current serving carrier. This can avoid data loss. Preferably, when the terminal establishes a connection with the AN, the RTCAck message is sent on the first captured carrier, and when the access network receives the message, the carrier selection module 20 selects the carrier as the signaling number. According to the carrier carrier. The following describes a method for selecting a signaling data bearer carrier according to an embodiment of the present invention. FIG. 6 is a flowchart of a signaling data carrier carrier selection example according to an embodiment of the present invention. In the multi-carrier environment, the bearer carrier that selects the signaling data for the terminal in the access network includes the following steps: Step S601: When the terminal establishes a connection with the access network (Access Network, referred to as AN), or after the connection is established, The terminal is in the handover area, and the access network receives the request of the terminal to request to add or delete the available carrier. Step S602, the AN determines whether the connection establishment is currently in progress. If the connection establishment is being performed, the process proceeds to step S603, otherwise, the process proceeds to step S604. Step S603, the AN selects the first carrier captured by the terminal as the bearer carrier for signaling data transmission, and notifies the selection result to the signaling data sending module 30, and proceeds to step S607; in step S604, the carrier selection module 20 follows the carrier level. Dividing and storing the carrier with the highest rank of the currently available carrier set stored in the storage module 10 as the bearer of the signaling data Go to step S605; In a specific application, after the access network receives the request for adding or deleting carriers, after performing corresponding processing, the carrier class division and storage module 10 classifies the currently available carriers of the terminal, and stores each available. The level of the carrier. Step S605, determining whether there are multiple highest-level carriers in the currently available carrier set of the terminal, if yes, proceeding to step S606, otherwise proceeding to step S607; step S606, selecting the most recently captured terminal from among the plurality of highest-ranked carriers The carrier is used as the carrier of the signaling data, and the process proceeds to step S607. Step 607, it is determined whether the current monthly service carrier of the terminal is valid. If the current monthly service carrier is valid, the process proceeds to step S608, otherwise, the process proceeds to step S609; Determining whether the current service carrier of the terminal has data to send, if there is data transmission, proceeding to step S610, otherwise proceeding to step S609; Step S609, replacing the current service carrier of the terminal with the above selected by the carrier selection module 20. Carrying the carrier, the process ends; Step S610, buffering the carrier ID selected by the carrier selection module 20, waiting for the data on the current service carrier to be sent, and proceeding to step S611; and step S611, determining whether the data on the current service carrier has been sent. If it has been sent, the process goes to step S609, otherwise it goes to step 610. From the above description, it can be seen that, in the embodiment of the present invention, when the currently available carrier set of the terminal changes, the access network acquires the level of each carrier in the currently available carrier set, and selects the carrier with the highest rank as the terminal. The bearer carrier of the signaling data, so that when the available carrier of the terminal is added or deleted, the carrier with the highest level of carrier can be selected from the currently available carrier set of the terminal in time to replace the bearer carrier of the current signaling data, thereby ensuring the access network. The signaling data can be sent to the terminal accurately and efficiently. Obviously, those skilled in the art should understand that the above 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 and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, 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.

Claims

The method for selecting a signaling data bearer carrier is characterized in that: the terminal currently available carrier set changes;

Obtaining, by the access network, a level of each carrier in the currently available carrier set;

The access network selects the carrier with the highest rank from the currently available carrier set as the bearer carrier of the signaling data of the terminal. The method according to claim 1, wherein the change of the currently available carrier set of the terminal comprises:

After establishing a connection with the access network, the terminal sends a request to the access network according to its wireless environment and processing capability, requesting to increase its available carrier or remove the carrier in its available carrier set;

After receiving the request, the access network updates the currently available carrier set of the terminal according to the request. The method according to claim 1, wherein the acquiring, by the access network, the level of each carrier in the currently available carrier set comprises:

The access network divides the levels of each carrier in the currently available carrier set according to the following rules:

The carrier carrying the control channel has the highest rank;

The hotspot area carrier ranks second;

The A Y hotspot area has the lowest carrier level. The method according to claim 3, wherein the obtaining, by the access network, the level of each carrier in the currently available carrier set further comprises at least one of the following:

The carriers corresponding to the pilots having the same coverage are of the same level;

The carrier of the same frequency point has multiple pilots, and the levels of the corresponding carriers of the respective pilots are different, and the lowest level is selected as the level of the carrier of the frequency point.

The method according to claim 1, wherein the number of the carriers with the highest available carrier concentration level is multiple; the carrier with the highest selection level is used as the bearer of the signaling data of the terminal. Carriers include:

The carrier that is most recently captured by the terminal is selected as the carrier carrier from among the plurality of carriers with the highest access level selection.

The method according to any one of claims 1 to 5, wherein after the access network selects the carrier as a carrier carrier of signaling data of the terminal, the method further includes: During the handover process of the terminal, if the 7-carrier carrier multicast of the current signaling data times out, the carrier with the highest rank except the bearer carrier is selected as the bearer of the signaling data from the currently available carrier set. Carrier.

The method of claim 6, wherein after the access network successfully establishes a link with the terminal on the selected carrier, the method further includes:

Step 1: Determine whether the current serving carrier of the terminal is valid, if yes, execute step 2, if not, perform step 4;

Step 2: determining whether there is data transmission on the current service carrier, and if yes, executing step 4 3, if not, performing step 4 4;

Step 3: Cache the selected carrier identifier of the carrier, and after waiting for the data of the current serving carrier to be sent, perform step 4;

Step 4: The selected carrier is used as the current serving carrier.

8. A device for selecting a signalling data carrier carrier, comprising:

a carrier class division and storage module, configured to determine and save a level of each carrier in a currently available carrier set of the terminal, and trigger a carrier selection module when the current available carrier set changes;

The carrier selection module is configured to select a carrier with the highest rank from the currently available carrier set as a bearer carrier of signaling data of the terminal.

The device according to claim 8, wherein the number of the carriers with the highest available carrier concentration level is multiple, and the carrier selection module selects the terminal from a plurality of the carriers The most recently captured carrier is the bearer carrier.

The device according to claim 8 or 9, further comprising: a signaling data sending module, configured to send signaling data of the terminal on the bearer carrier selected by the carrier selecting module.

The device according to claim 10, wherein the signaling data sending module comprises: a first determining module, configured to determine whether the current monthly service carrier of the terminal is invalid, and if yes, triggering a carrier Replacing the module, if not, triggering the second determining module;

a second determining module, configured to determine whether there is data transmission on the current serving carrier, and if yes, triggering a cache module, and if not, triggering the carrier replacement module;

The cache module is configured to buffer the identifier of the bearer carrier selected by the carrier selection module, and trigger the carrier replacement module after the data transmission on the current service carrier is completed;

The carrier replacement module is configured to use the bearer carrier selected by the carrier selection module as a current monthly service carrier of the terminal.