CN104883246B - The method and apparatus of carrier waves in carrier aggregation system management - Google Patents

The method and apparatus of carrier waves in carrier aggregation system management Download PDF

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Publication number
CN104883246B
CN104883246B CN201510309518.8A CN201510309518A CN104883246B CN 104883246 B CN104883246 B CN 104883246B CN 201510309518 A CN201510309518 A CN 201510309518A CN 104883246 B CN104883246 B CN 104883246B
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carrier
additional carrier
additional
user equipment
signaling
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CN104883246A (en
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徐海博
张元涛
周华
吴建明
太田好明
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to CN201510309518.8A priority Critical patent/CN104883246B/en
Priority claimed from CN201080060477.9A external-priority patent/CN102696273B/en
Publication of CN104883246A publication Critical patent/CN104883246A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a kind of method and device of carrier waves in carrier aggregation system management.The described method includes：The signaling for carrying additional carrier measurement instruction is sent to user equipment；Receive the additional carrier measurement report from the user equipment；When the downlink traffic increase of the user equipment, if the carrier wave in the current descending carrier set of the user equipment of record cannot meet the data rate requirement of the downlink traffic, according to the additional carrier measurement report configuration and at least one additional carrier is activated and notifying user equipment carries out corresponding configuration operation.In addition, base station can also be turned to according to the change of measurement result and user's equipment downward portfolio, user carries out the deactivation of additional carrier, activation is replaced and is removed, and notifying user equipment carries out corresponding configuration operation.User equipment can measure the received signal quality of additional carrier according to downlink signaling and control the reception of data in control information and Physical Downlink Shared Channel (PDSCH) on the Physical Downlink Control Channel (PDCCH) of additional carrier.The method and apparatus for carrier management can reduce the power consumption of the propagation delay time and user equipment of data.

Description

The method and apparatus of carrier waves in carrier aggregation system management
The application be the applying date on 01 08th, 2010, Application No. 201080060477.9, entitled " carrier wave The divisional application of the application for a patent for invention of the method and apparatus of carrier management in paradigmatic system ".
Technical field
The present invention relates to wireless communication technique, more specifically, be related to carrier waves in carrier aggregation system management method and Device.
Background technology
With Universal Mobile Communication System (UMTS) technology Long Term Evolution (the Long Term started by 3GPP Evolution, LTE) project freezes, and 3GPP tissues have been had begun to forth generation mobile communication system, such as to advanced length The research of phase evolution system (LTE-Advanced, LTE-A).In order to meet the downlink 1Gbps for 4G systems of ITU propositions, The high data rate requirement of uplink 500Mbps, it is described to support to be capable of providing that 3GPP proposes carrier aggregation technology in LTE-A The bandwidth value of high data rate requirement.Carrier aggregation technology can get up multiple carrier aggregations of different frequency range to form maximum The bandwidth of 100M, makes the user equipment (user equipment, UE, also referred to as mobile terminal, mobile station etc.) of LTE-A can be Data are received and/or sent on multiple carrier waves, so that the band for sending or receiving data is wider than 20M.In carrier aggregation technology In, the carrier wave each polymerizeing is known as a member carrier (component carrier, CC).
Base station (Evolved NodeB, abbreviation eNB) end will dispose multiple member carriers in carrier aggregation system, and use Family equipment will also support sending and receiving in the enterprising row data of multiple member carriers at the same time.3GPP is to carrier aggregation technology at present Progress it is slower, the research especially to high-rise technology simply defines some concepts and basic flow, and right Specific ins and outs are also without expansion research.Since carrier aggregation technology is primarily used to provide the speed of higher for user equipment Rate is supported, therefore while being in idle condition to user equipment will not have an impact.Based on this, industry has reached following common recognition：Pin To the user equipment in idle condition, it only has a member carrier can use, and establishes business by the member carrier and connect Connect.For sake of convenience, the member carrier is known as main (Anchor) carrier wave in the present invention.And in a carrier aggregation system Other member carriers are known as additional carrier.
Except needing control channel and signaling in physical layer redesign support multi-carrier transmission in carrier aggregation technology Outside, it is also necessary to design high-rise agreement to be managed to multiple carrier waves.Configuration, carrier set including user equipment carrier set The operation such as the increase of carrier wave, removal in conjunction.Management currently for carrier wave has following two basic schemes that process is being discussed In.
Scheme 1：Based on the scheme of a step, i.e. the only configuration process of carrier wave.Specifically, i.e., it is use by high-level signaling Family device configuration one or more additional carrier.After configuring, user equipment can be controlled letter on the carrier wave of configuration The reception of breath and data.
Scheme 2：Based on the scheme of two steps, the i.e. process of configuration plus activation.Specifically, i.e., it is by high-level signaling first User device configuration one or more additional carrier.After the completion of configuration, user equipment can not be enterprising in the carrier wave of configuration at once The reception of row control information and data.But when the downlink traffic increase of user equipment, base station is needed by other letter Make to activate configured one or more additional carriers.After carrier activation, user equipment can be just controlled on it The reception of information and data.And when the downlink traffic of user equipment is reduced, base station can be deactivated by high-rise signaling One or more additional carrier living.
Compared to scheme 1, scheme 2 needs additional activation and deactivates signaling.But scheme 2 can be according to user equipment Traffic needs activate and deactivate additional carrier, so as to preferably saving the power of user equipment.But as above two kinds Among scheme currently discusses, and not concrete implementation process.Therefore need to propose one for carrier aggregation system Kind carries out the concrete implementation scheme of carrier management.
It should be noted that above the explanation of routine techniques is intended merely to conveniently carry out clearly technical scheme Chu, complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes in the present invention Background section be set forth and think that above-mentioned technical proposal is known to those skilled in the art.
The relevant references of the present invention are listed below, are incorporated them into by quoting in this, as in this specification In made detailed description.
1st, the U.S. Patent application of Publication No. US 20090268831A1；
2nd, the U.S. Patent application of Publication No. US 20090257517A1；
3rd, the U.S. Patent application of Publication No. US 20090219910A1；
4th, international publication number is the international patent application of WO 2009120123A1；
5th, the Chinese patent application of Publication No. CN101465720.
The content of the invention
It is an object of the present invention to provide in a kind of carrier aggregation system carry out carrier management method and apparatus, with The multiple carrier waves disposed in the carrier aggregation system are managed.
According to an aspect of the present invention, present aspect provides a kind of method that carrier management is carried out in carrier aggregation system, This method comprises the following steps：The signaling for carrying additional carrier measurement instruction is sent to user equipment；Reception comes from the user The additional carrier measurement report of equipment；And when the downlink traffic increase of the user equipment, if the use of record Carrier wave in the current descending carrier set of family equipment cannot meet the data rate requirement of the downlink traffic, then according to institute Additional carrier measurement report is stated to carry out the configuration operation of additional carrier for the user equipment and send to the user equipment The signaling for carrying configuration instruction is operated with indicating that the user equipment carries out corresponding configuration, the configuration operation of the additional carrier Including：Configure and activate at least one additional carrier, and at least one additional carrier is added into the descending carrier set.
Further, it is also possible to turning to user equipment according to the change of user's equipment downward portfolio in base station end carries out additional carrier Deactivation, activation operation, set according to the measurement result to member carrier in its carrier set of user equipment to report for user The standby replacement for carrying out member carrier and removal operation, and pass through high-level signaling (such as RRC signaling, MAC signalings), physical layer signaling (such as PDCCH signalings) or implicitly signal user equipment.
In a preferred embodiment of the invention, the method further includes：In the downlink traffic of the user equipment During reduction, according to the downlink traffic of the user equipment for the user equipment to described at least one activated additional Carrier wave carries out deactivating operation, and indicates that the user equipment carries out corresponding deactivating operation.
In another preferred embodiment of the invention, the method is further included when the downlink traffic of the user equipment During increase, if the carrier wave in the current descending carrier set of the user equipment of record disclosure satisfy that the downlink traffic Bandwidth requirement, then for the user equipment to being at least one additional of deactivation status in the descending carrier set Carrier wave is operated into line activating, and is sent to the user equipment and carried the signaling for activating instruction to indicate that the user equipment carries out Corresponding activation operation.
In another preferred embodiment of the invention, the method further includes：Sent to the user equipment and carry prison The signaling of instruction is listened to indicate whether the user equipment monitors be active in the descending carrier set at least one The Physical Downlink Control Channel of a additional carrier.
In another preferred embodiment of the invention, the method further includes：In the service connection of the user equipment Period, when determining presence signal quality more preferably additional carrier outside the descending carrier set according to the measurement report, Described in then the worst additional carrier of signal quality in the descending carrier set is replaced with outside the descending carrier set Signal quality more preferably additional carrier, and sent to the user equipment and carry the signaling for replacing instruction to indicate that the user sets It is standby to be replaced accordingly, wherein more preferably additional carrier refers to that signal quality is better than the descending carrier collection to the signal quality The additional carrier of the signal quality of at least one additional carrier in conjunction.
In another preferred embodiment of the invention, the method further includes：In the service connection of the user equipment Period, when determining that presence signal mass intensity is less than the additional carrier of predetermined threshold value in the descending carrier set, The signal quality intensity is removed less than the additional carrier of predetermined threshold value from the descending carrier set, and to described User equipment sends the signaling for carrying and removing instruction, and operation is removed to indicate that the user equipment progress is corresponding.
According to another aspect of the present invention, the present invention also provides the side that carrier management is carried out in a kind of carrier aggregation system Method, includes the following steps：When downlink traffic increase, additional load is carried out according to the signaling of the carrying configuration instruction from base station The configuration operation of ripple, the configuration operation of the additional carrier include：Configure and activate at least one additional carrier, and by described in extremely A few additional carrier adds the descending carrier set of user equipment；And when downlink traffic is reduced, come if received From the instruction of the deactivation at least one additional carrier in above-mentioned descending carrier set of base station or if continuous pre- Determine not receive control at least one additional carrier in the descending carrier set in the discontinuous receiving cycle of number Information and data processed, then carry out deactivating operation at least one additional carrier in the descending carrier set.
In one embodiment of the invention, the method further includes：Receive the medium education from the base station MAC signalings, and the bit information that the carrier wave in the descending carrier set is corresponded in the MAC signalings determines whether to activate Additional carrier or the Physical Downlink Control Channel for whether monitoring activated additional carrier.
In one embodiment of the invention, the method further includes：During the service connection of the user equipment, institute State outside descending carrier set presence signal quality more preferably additional carrier when, receive the letter that instruction is replaced in the carrying from base station Order, replaces with the worst additional carrier of signal quality in the descending carrier set according to the signaling for carrying replacement instruction The signal quality outside the descending carrier set more preferably additional carrier, carries wherein the signal quality more preferably adds Ripple refers to the additional carrier of the signal quality at least one additional carrier that signal quality is better than in the descending carrier set.
In one embodiment of the invention, the method further includes：During the service connection of the user equipment, when When presence signal mass intensity is less than the additional carrier of predetermined threshold value in the descending carrier set, reception comes from base station Carrying remove instruction signaling, according to it is described carry remove instruction signaling the signal quality intensity is less than predetermined door The additional carrier of limit value is removed from the descending carrier set.
According to another aspect of the present invention, the present invention also provides the dress that carrier management is carried out in a kind of carrier aggregation system Put, which includes：Indication signaling generation unit is measured, the signaling of additional carrier measurement instruction is carried for generating；Portfolio Detection unit, for detecting the downlink traffic of user equipment；Receiving unit, it is additional from the user equipment for receiving Carrier wave measurement report；Dispensing unit, for detecting that the increase of the portfolio of user equipment makes in the business amount detection unit Carrier wave in the current descending carrier set of the user equipment of record cannot meet the data rate of the downlink traffic It is required that when, matching somebody with somebody for additional carrier is carried out for the user equipment according to the additional carrier measurement report that the receiving unit receives Operation is put, the configuration operation of the additional carrier includes：Configure and activate at least one additional carrier, and will be described at least one Additional carrier adds the descending carrier set；Configuration instruction signaling generation unit, the signaling of configuration instruction is carried for generating To indicate that the user equipment carries out corresponding configuration operation；And transmitting element, surveyed for sending the carrying additional carrier The signaling of amount instruction and the signaling for carrying configuration instruction.
In a preferred embodiment of the invention, described device further includes：Deactivate processing unit, deactivation processing Unit is used for when the downlink traffic of the user equipment is reduced, according to the downlink traffic of the user equipment for described User equipment carries out deactivating operation at least one activated additional carrier.
In another preferred embodiment of the invention, described device further includes：Processing unit is activated, activation processing is single Member is in the downlink traffic increase of the user equipment, if in the current descending carrier set of the user equipment of record Carrier wave disclosure satisfy that the bandwidth requirement of the downlink traffic, then for the user equipment in the descending carrier set At least one additional carrier in deactivation status is operated into line activating；And activation indication signaling generation unit, for giving birth to Into the signaling for carrying activation instruction；Wherein, the transmitting element is additionally operable to refer to the user equipment transmission carrying activation The signaling shown is operated with indicating that the user equipment carries out corresponding activation.
In another preferred embodiment of the invention, described device further includes：Indication signaling generation unit is monitored, is used for Generation carries the signaling for monitoring instruction；The transmitting element is additionally operable to send the carrying monitoring instruction to the user equipment Signaling is to indicate whether the user equipment monitors at least one additional load being active in the descending carrier set The Physical Downlink Control Channel of ripple.
In another preferred embodiment of the invention, described device further includes：Carrier wave replacement unit, in the use During the service connection of family equipment, when determining that presence signal quality is more outside the descending carrier set according to the measurement report During excellent additional carrier, then the worst additional carrier of signal quality in the descending carrier set is replaced with into the descending carrier The signal quality outside set more preferably additional carrier, wherein more preferably additional carrier refers to signal matter to the signal quality Amount is better than the additional carrier of the signal quality of at least one additional carrier in the descending carrier set；And replace instruction letter Generation unit is made, the signaling for replacing instruction is carried for generating；The transmitting element is additionally operable to send institute to the user equipment State and carry the signaling for replacing instruction to indicate that the user equipment is replaced accordingly.
In another preferred embodiment of the invention, described device further includes：Processing unit is removed, in the use During the service connection of family equipment, when determining that presence signal mass intensity is less than predetermined thresholding in the descending carrier set During the additional carrier of value, by additional carrier of the signal quality intensity less than predetermined threshold value from the descending carrier set Middle removal；And indication signaling generation unit is removed, carry the signaling for removing instruction for generating；The transmitting element is also to institute State user equipment and send the signaling for carrying and removing instruction, operation is removed to indicate that the user equipment progress is corresponding.
According to another aspect of the present invention, the present invention also provides the dress that carrier management is carried out in a kind of carrier aggregation system Put, described device includes：Processing unit is configured, in downlink traffic increase, referring to according to the carrying configuration from base station The signaling shown carries out the configuration operation of additional carrier, and the configuration operation of the additional carrier includes：Configure and activate at least one Additional carrier, and at least one additional carrier is added to the descending carrier set of user equipment；And deactivate processing list Member, for when downlink traffic is reduced, receive from base station at least one attached in above-mentioned descending carrier set Load the deactivation instruction of ripple or in the discontinuous receiving cycle of continuous predetermined number not in the descending carrier collection When receiving control information and data at least one additional carrier in conjunction, to described in the descending carrier set at least One additional carrier carries out deactivating operation.
In a preferred embodiment of the invention, described device further includes：Receiving unit, the base is come from for receiving The media access control MAC signaling stood；And activation or monitoring processing unit, for the load in the descending carrier set The bit information that ripple is corresponded in the MAC signalings determines whether to activate additional carrier or whether monitors activated additional carrier Physical Downlink Control Channel.
In another preferred embodiment of the invention, described device further includes：Receiving unit, the receiving unit are used for In presence signal quality more preferably additional carrier outside the descending carrier set, receive the carrying from base station and replace instruction Signaling；And processing unit is replaced, the replacement processing unit is used for according to the signaling for replacing instruction that carries by described in The worst additional carrier of signal quality replaces with the signal quality outside the descending carrier set in descending carrier set More preferably additional carrier, wherein more preferably additional carrier refers to that signal quality is better than the descending carrier set to the signal quality In at least one additional carrier signal quality additional carrier.
In another preferred embodiment of the invention, described device further includes：Receiving unit, the receiving unit When presence signal mass intensity is less than the additional carrier of predetermined threshold value in the descending carrier set, receive from base station Carry the signaling for removing instruction；And processing unit is removed, the removal processing unit is used to remove instruction according to described carry Signaling the signal quality intensity is removed less than the additional carrier of predetermined threshold value from the descending carrier set.
According to another aspect of the present invention, the present invention also provides a kind of computer-readable program, when in carrier aggregation system During middle execution described program, described program causes computer to perform foregoing carry out carrier management in the carrier aggregation system Method.
According to another aspect of the present invention, the present invention also provides a kind of storage medium for being stored with computer-readable program, The computer-readable program causes the method that computer performs foregoing progress carrier management in carrier aggregation system.
The method and apparatus that carrier management is carried out in carrier aggregation system based on the present invention, can be according to user equipment Traffic needs are effectively managed additional carrier.
In order to realize foregoing and related purpose, the present invention includes hereafter fully describing and specifically noting in the claims Feature.The following description and drawings illustrating in detail the specific exemplary embodiments of the present invention.However, these embodiments Being merely representative of can be using several in the various modes of the principle of the present invention.Considered according to the present invention with reference to attached drawing following It is described in detail, other objects of the present invention, advantage and novel feature will be clear.
Brief description of the drawings
Attached drawing shows the preferred embodiment of the present invention, constitutes part for specification, for together with explanatory note The principle of the present invention is explained in further detail.Wherein：
Fig. 1 shows that user equipment in LTE system establishes the signaling process of service connection；
Fig. 2 shows the signaling process of user equipment activation safe mode in LTE system；
Fig. 3 shows the configuration flow figure of additional carrier in one embodiment of the invention；
Fig. 4 is shown in another embodiment of the present invention to the deactivating operation flow chart of additional carrier；
Fig. 5 shows the activation operational flowchart to additional carrier in another embodiment of the present invention；
Fig. 6 is shown in another embodiment of the present invention to the replacement operation flow chart of additional carrier；
Fig. 7 shows the removal operational flowchart to additional carrier in another embodiment of the present invention；
Fig. 8 shown in another embodiment of the present invention, the signaling process being managed to additional carrier；
Fig. 9 shows the form of MAC PDU in LTE system；
Figure 10 shows the form of MAC PDU in the embodiment of the present invention；
Figure 11 shows the structure diagram signal of base station in one embodiment of the invention；
Figure 12 shows the structure diagram signal of base station in another embodiment of the present invention；
Figure 13 shows the structure diagram signal of user equipment in one embodiment of the invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment, belongs to the scope of protection of the invention.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only Show the device structure closely related with scheme according to the present invention and/or processing step, and eliminate and relation of the present invention Little other details.
The present invention is on the basis of the configuration currently discussed plus two step schemes of activation, it is proposed that a kind of carrier aggregation The new method of carrier management is carried out in system.The method of the present invention is described in detail below by embodiment.
Due to needing to initially set up service connection and activation safe mode before data transfer is started in user equipment, because This in order to be better understood from the present invention, be described first below user equipment in LTE system establish service connection signaling process and Secure mode active flow.
As shown in Figure 1, the service connection Establishing process of user equipment includes in LTE system：
Step 100, user equipment sends wireless resource control connection request (RRC Connection to base station Request)。
When user equipment is in idle condition, after Non-Access Stratum (NAS) triggers service connection request, user equipment hair RRC connection control signalings are sent to establish service connection to base station, request base station for user equipment.
Step 102, base station returns to RRC connections to the user equipment and establishes (RRC Connection Setup) signaling.
Specifically, after the RRC connection request signaling from user equipment is received, base station can be that user device configuration is special Radio Resource, and signaling is established by resource allocation information notifying user equipment by RRC connections.
Step 104, user equipment returns to RRC connections to base station after radio-resource-configuration completion and establishes completion (RRC Connection Setup Complete) signaling.
Specifically, user equipment receives the RRC connections from base station and establishes after signaling the configuration that will carry out Radio Resource, together When stop several timers used in idle condition.Hereafter it will be established by RRC connections and complete signaling to base station transmission registration Mobile management entity (MME) information, thus complete connection establish process.
As shown in Fig. 2, the secure mode active flow of user equipment includes：
Step 201, after service connection is established for user equipment, base station sends safe mode command to user equipment (Security Mode Command) signaling.
Step 203, user equipment calculates encryption key after receiving the safe mode command signaling and performs Encryption Algorithm.This Safe mode is sent to base station afterwards and complete (Security Mode Complete) signaling, so as to complete the activation of safe mode.
In lte-a system, user equipment searches a carrier wave in cell search process, and resides in the carrier wave On, into idle condition.For the user's equipment, resident carrier wave is the main carrier of the user's equipment.Work as Non-Access Stratum (NAS) after triggering service connection request, user equipment will be carried out by the main carrier according to the signaling process designed in LTE system Service connection (as shown in Figure 1) and secure mode active (as shown in Figure 2), are hereafter transferred to service connected state and start data Send and receive.
The present invention is to carry out carrier management to the user equipment of finishing service connection and secure mode active, including to user Equipment carries out configuration of additional carrier etc..In order to realize the carrier management to user equipment, in base station and user equipment end, all remember Record has a descending carrier set, the descending carrier set include be user device configuration carrier wave (including main carrier And additional carrier) information.Before additional carrier configuration is carried out for user equipment, only record has master in the descending carrier set Carrier information.
Fig. 3 show the flow of the method that carrier management is carried out in carrier aggregation system of one embodiment of the present of invention Figure.As shown in figure 3, the described method includes：
Step 310, base station sends the signaling for carrying additional carrier measurement instruction to user equipment.
In a preferred embodiment of the invention, the signaling for carrying additional carrier measurement instruction is Radio Resource control (RRC) signaling is made, as RRC connection reconfigurations put (RRC Connection Reconfiguration) signaling, but the present invention is not It is limited to this, or other RRC signalings or non-RRC signaling.
The information (referred to here as additional carrier measurement instruction) that the signaling carries for example may include：Need to measure additional The frequency of carrier wave, bandwidth, the report cycle etc. of measurement gap and measurement result, but it is not limited to these information.
Main carrier is constantly in state of activation during user apparatus service connects.User equipment receives taking from base station Just the information in signaling carries out letter to the additional carrier in carrier aggregation system after signaling with additional carrier measurement instruction The measurement such as number quality, and pass through the periodic report measurement results of measurement report.
Step 320, base station receives the additional carrier measurement report from user equipment.
Measurement result of the user equipment to additional carrier is carried in the additional carrier measurement report.At one of the present invention In preferred embodiment, the additional carrier measurement report is wireless heterogeneous networks (RRC) signaling, as RRC connection reconfigurations have been put Into (RRC Connection Reconfiguration complete) signaling, but the present invention is not limited thereto, or its His RRC signaling or non-RRC signaling.According to the measurement result, base station can know the signal quality of additional carrier.
Step 330, when the downlink traffic increase of user equipment, base station carries out additional carrier for the user equipment Configuration operation and being sent to the user equipment carry the signaling of configuration instruction to indicate that it is corresponding that the user equipment carries out Configuration operation.
Wherein, the configuration operation of the additional carrier includes：Configure and activate at least one additional carrier, and by described in extremely A few additional carrier adds the descending carrier set.
Specifically, when the downlink traffic increase of user equipment, if base station is the descending carrier of the user's device configuration Carrier wave in set can not meet the data rate requirement of the downlink traffic, and base station can be according to from the user equipment The signal quality of additional carrier for the user's device configuration and activates one or more additional loads in additional carrier measurement report Ripple, and the additional carrier of configuration is added into descending carrier set.Also, base station is also by specific signaling to the user equipment Send additional carrier configuration instruction.The specific signaling can be RRC signaling, as RRC connection reconfigurations put (RRC Connection Reconfiguration) signaling, but the present invention is not limited thereto, or and other RRC signalings are non- RRC signaling.The information (i.e. additional carrier configuration instruction) that the specific signaling includes may include：The load of the descending carrier of configuration Frequently, bandwidth and dedicated radio resources configuration information etc., but be not limited to this.
Corresponding to step 330, after user equipment receives the specific signaling, it is that it is newly configured with one newly to find base station Additional carrier, then according to the information configuration in signaling, the additional carrier (is, for example, additional carrier configuration dedicated radio resources Information), and the additional carrier is activated, start the reception on the additional carrier of the new configuration and come from Physical Downlink Control Channel (PDCCH) control information and the data from physical down data channel (PDSCH).User equipment is additional also by what is newly configured Carrier wave is added in its descending carrier set.
Completed in user equipment to additional carrier with postponing, optionally, step 340, user equipment can also be included Configuration, which is returned, to the base station completes response signaling.It is preferably RRC signaling that response signaling is completed in the configuration, such as RRC connections weight (RRC Connection Reconfiguration complete) signaling is completed in configuration, but is not limited to this, or its His signalling format.
Based on as above step 310~340, the configuration (including activation) to the additional carrier of user equipment is just completed.This Inventive embodiments are that the first configuration of additional carrier is carried out according to downlink traffic.Will while being configured for the first time to additional carrier Also additional carrier activates.
It is also possible to base station end according to the change of user's equipment downward portfolio turn to user equipment carry out it is attached Deactivation, the activation operation of ripple are loaded, the measurement result to member carrier in its carrier set according to user equipment to report is User equipment carries out the replacement of member carrier and removes operation.And pass through high-level signaling (such as RRC signaling, MAC signalings), physics Layer signaling (such as PDCCH signalings) implicitly signals user equipment.
When user's equipment downward portfolio is reduced, as shown in figure 4, the method for the progress carrier management of the present invention can also wrap Include the deactivation step of following additional carrier：
Step 430, base station deactivates at least one additional carrier according to the downlink traffic of user equipment for user equipment, And sent to the user equipment and deactivate instruction, to indicate that the user equipment carries out phase at least one additional carrier The deactivating operation answered.
Base station can by explicit signaling to user equipment send deactivate instruction, come notifying user equipment deactivate one or More additional carriers being active.The explicit signaling can be RRC signaling, be, for example, that RRC connection reconfigurations put (RRC Connection Reconfiguration) signaling, but be not limited to this, or other RRC signalings or non-RRC letters Order.The instruction (deactivating instruction) that the explicit signaling carries may include：The carrier frequency of deactivated additional carrier, but it is and unlimited In this, such as the information such as the bandwidth of deactivated additional carrier can also be included.After user equipment receives the display signaling, root It can judge to perform corresponding additional carrier according to operation defined in the display signaling and its additional carrier information carried Deactivating operation.
After the deactivation that user equipment completes at least one additional carrier being active, optionally, also It can include step 440, return to deactivate to the base station and complete response signaling.Response signaling is completed in the configuration RRC signaling, as RRC connection reconfigurations put completion (RRC Connection Reconfiguration complete) signaling, but simultaneously Not limited to this, or other signalling formats.
The deactivation step 430 of as above additional carrier shown in Fig. 4 and 440 is carried out by explicit signaling, in order to save About interface-free resources, in another preferred embodiment of the present invention, when user's equipment downward portfolio is reduced, base station can be with One or more additional carriers being active are deactivated by implicitly signaling user equipment.
The implicit Signalling Designing method is：Base station and user equipment set a timer jointly.The timer is most Small timing unit is discontinuous reception (DRX) cycle.User equipment establish during service connection the DRX cycle by base station into Row configuration.When base station during continuous X DRX cycle not in the Physical Downlink Control Channel (PDCCH) and thing of additional carrier Any control information is sent for user equipment and data, base station set the additional carrier on reason DSCH Downlink Shared Channel (PDSCH) For deactivation status, and corresponding timer is deleted, wherein X is, for example, the integer more than 1, but is not limited to this.Similarly, such as Fruit user equipment does not receive any control information and data on this in continuous X DRX cycle in additional carrier, then uses Family equipment can deactivate the additional carrier, and delete corresponding timer.Since timer is in base station end and user equipment end guarantor Synchronization is held, therefore the deactivation of base station and user equipment to additional carrier is synchronous.Additional load in descending carrier set During ripple is in deactivation status, it is enterprising that base station and user equipment will stop at the additional carrier that this is in deactivation status respectively Row control information and data send and receive.It can be saved and eated dishes without rice or wine by the deactivating operation of implicit signaling progress additional carrier Resource.
Further, when user's equipment downward portfolio increases again, if base station currently carries for the downlink of its configuration Carrier wave in ripple set can meet the data rate requirement of downlink traffic, and the carrier wave for being currently at state of activation still cannot When meeting the data rate requirement of downlink traffic, then as shown in figure 5, the present invention progress carrier management method further include as Under additional carrier activation step：
Step 530, base station is directed to the user equipment to being in deactivation status at least in the descending carrier set One additional carrier is operated into line activating, and is sent to the user equipment and carried the signaling for activating instruction to indicate the user Equipment carries out corresponding activation operation.
In one embodiment of the present invention, the signaling for carrying activation instruction is preferably medium education (Media Access Control, MAC) signaling.For example, base station according to the measurement result to additional carrier of user equipment to report in downlink One or more additional carriers in deactivation status are selected into line activating for user equipment in carrier set and pass through MAC User equipment is signaled to activate one or more the additional carrier in deactivation status.
The design method of the MAC signalings is：The increase reserved word in the Medium Access Control (MAC) Protocol Data Unit (PDU) of LTE system Save the information of (such as 1 byte, or more bytes).The byte information includes reserved bit and useful bit.Wherein useful ratio Special number is equal to the carrier number in descending carrier set, and remaining bit is reserved bit.Useful bit uses bit mapping mode Corresponded with the carrier wave in descending carrier set.The predetermined value (1 or 0) of useful bit wherein corresponding with main carrier represents Implication it is identical with the implication of DRX control commands in LTE system (DRX command), for controlling in descending carrier set Carrier wave through being activated.For example, when the value of the corresponding useful bit of main carrier is 1, indicate the user equipment perform and The identical operation after DRX Command is received in LTE system；When the value of the corresponding useful bit of the main carrier is 0, DRX control commands are then equivalently employed without, when indicating that the user equipment is performed with DRX Command are not received in LTE system The identical operation performed, or conversely.Useful bit corresponding with additional carrier its corresponding instruction for notifying user equipment Additional carrier whether need to be activated.For example, the corresponding useful bit of additional carrier in deactivation status is arranged to During one value, instruction activates the additional carrier for being in deactivation status, corresponding in the additional carrier in deactivation status When useful bit is arranged to the second value, it indicates that do not activate the additional carrier for being in deactivation status.User equipment receives After the MAC signalings, if MAC signalings instruction will activate an additional carrier for being in deactivation status, activate at this In the additional carrier of deactivation status, and start to receive control information from PDCCH on the additional carrier and from PDSCH Data.
Since current LTE-A can support another carrier wave to be scheduled by a carrier wave, that is, pass through a load The PDCCH of ripple sends the resource scheduling information to another carrier wave.Therefore, in yet another embodiment of the present invention, base station It can also be sent to user equipment and carry the signaling for monitoring instruction to indicate whether the user equipment monitors the descending carrier The PDCCH at least one additional carrier being active in set.
Wherein, the signaling for carrying the signaling for monitoring instruction preferably with above-mentioned carrying activation instruction has same structure MAC signalings.Only at this time, whether useful bit corresponding with additional carrier is used to notifying user equipment and needs to monitor this have With the PDCCH of the corresponding additional carrier of bit.
For example, whether base station can need to monitor the additional carrier by the MAC signalings instruction user equipment PDCCH.If the MAC signalings by the useful bit of predetermined value (such as 1) indicate one activated and meanwhile monitor its The additional carrier of PDCCH, then user equipment stops at and control information is received on the PDCCH of the additional carrier, and only needs to receive Data on its PDSCH.User equipment can so be reduced and perform the complexity of blind Detecting to decode PDCCH channels.
If on the contrary, the MAC signalings by the useful bit of the predetermined value (such as 1) indicate one activated but The additional carrier of its PDCCH is not monitored, then begins listening for the PDCCH of the additional carrier, so as to start on the additional carrier Receive control information.
MAC signalings as described above are only for example, in other embodiments of the present invention, the signaling for carrying activation instruction Can also be to carry activation configured information respectively and monitor the PDCCH letters of configured information with the signaling for carrying monitoring instruction Order.
Further, during user apparatus service connects, determined not as use when according to the measurement report of user equipment The signal quality of some additional carrier of family device configuration be better than descending carrier set in some additional carrier when, i.e., under More preferably (more preferably additional carrier is the signal quality carrier wave presence signal quality in additional carrier outside row carrier set Refer to the additional carrier of the signal quality at least one additional carrier that signal quality is better than in the descending carrier set), then such as Shown in Fig. 6, present invention additionally comprises following additional carrier replacement step：
Step 630, base station by specific signaling by some additional carrier (example described in the descending carrier set It is such as the worst additional carrier of quality) replace with signal quality outside descending carrier set more preferably additional carrier.
Wherein, the specific signaling can be RRC signaling, be, for example, that RRC connection reconfigurations put (RRC Connection Reconfiguration) signaling, but be not limited to this, or other RRC signalings or non-RRC signaling.The RRC letters The information (referred to here as replacing instruction) included is made to have：The carrier frequency for the additional carrier being replaced, the additional carrier to be substituted for Carrier frequency, the bandwidth for the additional carrier to be substituted for and dedicated radio resources configuration information etc., but be not limited to this.User equipment is received Its descending carrier aggregate information can be updated after to the RRC signaling.
Further, if the additional carrier being replaced described in descending carrier set is in activation shape before being replaced State, then the specific signaling will indicate the user device configuration and activate the signal quality more preferably additional carrier.If The additional carrier being replaced in the descending carrier set is in deactivation status before being replaced, then the specific signaling Instruction user equipment is only configured into the signal quality more preferably additional carrier, and is in the additional carrier of the configuration and deactivates State living.
User equipment is after the replacement operation of additional carrier is completed, and alternatively, can return to replace to base station and complete instruction letter Order.It can be RRC signaling that indication signaling is completed in the replacement, as RRC connection reconfigurations put completion (RRC Connection Reconfiguration complete) signaling, but be not limited to this.
In addition, it is optional, as shown in fig. 7, the carrier management method of the present invention may also include the steps of：
During user apparatus service connects, when presence signal mass intensity is pre- less than one in definite descending carrier set After the additional carrier for determining threshold value, base station by the signal quality intensity less than predetermined threshold value additional carrier under described Removed in row carrier set, and to the user equipment send carry remove instruction signaling, with indicate the user equipment into Row is corresponding to remove operation.Presence signal mass intensity is less than a predetermined threshold in wherein described definite descending carrier set Additional carrier may include：Presence signal mass intensity in descending carrier set is determined according to the measurement report from user equipment Less than the additional carrier of a predetermined threshold, may also include when user equipment has moved out the coverage of additional carrier 1 Afterwards, determine that presence signal mass intensity is less than in descending carrier set since the measurement report of user equipment can not be normally received The additional carrier of one predetermined threshold.The signaling for removing and indicating that carries can be RRC signaling, be, for example, RRC connections weight Configure (RRC Connection Reconfiguration) signaling, but be not limited to this, or other RRC signalings or Non- RRC signaling.
The information (removing instruction) that the RRC signaling includes includes：Carrier frequency of removed additional carrier etc., but not It is limited to this.User equipment is updated its descending carrier aggregate information after receiving the RRC signaling.Alternatively, user equipment It can return to remove to the user equipment after the additional carrier of response is removed and complete response signaling.Response letter is completed in the removal Order can be RRC signaling, as RRC connection reconfigurations put completion (RRC Connection Reconfiguration complete) letter Order, but be not limited to this.
, can be according under the measurement result and user equipment of additional carrier in base station end according to carrier management method as above The change of row portfolio turns to it and carries out the configuration of additional carrier, activation, deactivates and reconfigure that (including additional carrier replaces Change, remove) process., can be according to reception signal of the downlink signaling (including implicit signaling) to additional carrier at user equipment end Quality measures and controls the reception of data in control information and PDSCH on the PDCCH of additional carrier.
Also, the carrier management method of the present invention can be attached to activate and deactivate according to the traffic needs of user equipment Ripple is loaded, so as to preferably save the power of user equipment.
The carrier management method of the present invention is more specifically illustrated below in conjunction with specific example.
Assuming that deploying 4 carrier waves (0~carrier wave of carrier wave 3) in the carrier aggregation system of LTE-A, user equipment is supported most Sending and receiving in 3 enterprising row data of carrier wave at the same time.Fig. 8 shows a kind of carrier management flow of the embodiment of the present invention Example.
After user equipment establishes service connection by main carrier 0 and activates safe mode, base station is user device configuration Additional carrier measures configured information, and is surveyed the additional carrier by RRC Connection Reconfiguration signalings Amount instruction information is notified to user equipment.It can be included in additional carrier measurement configured information：Need the additional carrier 1 that measures~ The frequency of additional carrier 3, bandwidth and report cycle to the measurement gaps of these three additional carriers and measurement result etc..User After equipment receives these information, the measurement of signal quality can be carried out to additional carrier by the transceiver of main carrier 0, and pass through RRC Connection Reconfiguration complete signaling periodicities to base station report measurement results.
In t1Moment, when the downlink traffic increase of user equipment, if main carrier 0 can not meet downlink business The data rate requirement of amount, base station will match somebody with somebody according to from the received measurement report to additional carrier of the user's equipment for user equipment Put an optimal additional carrier of signal quality.The additional carrier for assuming the time-ofday signals optimal quality in this embodiment is attached Ripple 1 is loaded, therefore, user device configuration is in base station and activates additional carrier 1, and passes through RRC Connection Reconfiguration signaling instruction user equipment carries out additional carrier 1 configuration operation accordingly.The RRC Connection Carrier frequency, bandwidth and dedicated radio resources configuration information of additional carrier 1 etc. can be included in Reconfiguration signalings.At the same time The additional carrier 1 can be added in the descending carrier set of the user equipment of base station end record by base station, and base station end records at this time The user's equipment descending carrier set in include main carrier 0 and additional carrier 1.User equipment receives the RRC After Connection Reconfiguration signalings, it is found that base station is configured with a new additional carrier for it, just according to letter The information configuration carried in order the additional carrier 1 simultaneously at once activates additional carrier 1, start additional carrier 1 PDCCH and Control information and data are received on PDSCH respectively.At this time, alternatively, user equipment can return to a response signaling to base station, such as RRC Connection Reconfiguration complete signalings, to represent that configuration operation is completed.User equipment can also incite somebody to action Additional carrier 1 is added in its descending carrier set.At this time, main carrier 0 is included in the descending carrier set of user equipment record With additional carrier 1.
After additional carrier 1 is activated, base station and user equipment all can be that the additional carrier 1 sets a timer 1.Attached Load during ripple 1 activates, base station end is whenever sending control information on its PDCCH for user equipment or sent out on its PDSCH Data are sent all to restart the timer.And user equipment on its PDCCH whenever receiving control information or on its PDSCH The timer can all be restarted by receiving data.In t2Moment, after the downlink traffic of user equipment is reduced, if in continuous X In a DRX cycle, base station does not send any control information and data for user equipment on additional carrier 1, then base station meeting The additional carrier 1 is deactivated for user equipment, and deletes corresponding timer.Equally, if in continuous X DRX cycle, use Family equipment does not receive any control information and data on additional carrier 1, then user equipment can deactivate the additional load Ripple 1, and delete corresponding timer.Since timer at base station end and user equipment end keeps synchronous, base station and user Deactivation of the equipment to additional carrier 1 is synchronous.
Hereafter during service connection, the descending carrier set of user equipment includes two carrier waves, i.e. main carrier 0 and attached Load ripple 1.And the only main carrier 0 being active.In t3Moment, when user's equipment downward portfolio increases again, If main carrier 0 can not meet its data rate requirement, base station can activate additional carrier 1 and signal user by MAC and set It is standby also to activate additional carrier 1.The MAC signalings are a MAC PDU (Protocol Data Unit, protocol Data Unit).Under Face illustrates to be used in the present embodiment the form of the MAC PDU of LTE-A with reference to the form of MAC PDU in LTE system.
Fig. 9 shows the form of MAC PDU in LTE system.MAC PDU include two large divisions in Fig. 9：MAC header (header) and MAC payloads (payload).Multiple MAC sub-headers (sub-header) are included wherein in MAC header.MAC payloads In comprising multiple MAC control elements (Control Element, CE) and multiple MAC SDU, (Service Data Unit, service Data cell).Each MAC sub-headers correspond to MAC CE or MAC a SDU.It is when occurring a value in MAC header During the sub-header of " 11110 ", represent that a MAC CE corresponding with the sub-header is DRX control commands (DRX command) MAC CE.The size of the DRX control command MAC CE is 0 bit.Figure 10 shows that the carrier wave for LTE-A of the embodiment of the present invention gathers An example of MAC PDU in the MAC signalings of syzygy system.The area of MAC PDU proposed by the present invention and MAC PDU in LTE system It is not：The length of DRX control command MAC CE is expanded into 1 byte in the MAC PDU of the present invention.1 byte includes Two class bits：Reserved bit (R) and useful bit (A).The number of useful bit is to be configured in user's equipment downward carrier set Carrier number, remaining bit is reserved bit.In the present embodiment, the default value of useful bit is 0, and 0 is only to lift herein Example, it is not excluded that be arranged to 1.The useful bit such as from left to right carrier wave with descending carrier set Mid Frequency from low to high respectively Correspond, be only for example in the order of this wave band from low to high, useful bit can also from left to right respectively with descending carrier Gather the carrier wave of Mid Frequency from high to low to correspond.In useful bit, the predetermined of useful bit corresponding with main carrier takes Value (such as " 1 ") is used to indicate DRX control commands, and useful bit corresponding with additional carrier in descending carrier set is used to indicate Whether corresponding additional carrier is operated into line activating.For example, if the value of useful bit corresponding with main carrier is set to 1, Its implication is identical with the implication of DRX control commands MAC CE in LTE system, and equal to all activated carrier waves of user equipment It is applicable in, the implication of detailed DRX control command MAC CE may be referred to 3GPP TS 36.321.In this embodiment, due to this When user equipment descending carrier set in include two carrier waves：Main carrier 0 and additional carrier 1.If it is further assumed that main carrier 0 Frequency range be less than the frequency range of additional carrier 1, then relevant with carrier activation sub-header and DRX control in current time MAC PDU The content of MAC CE is respectively " 11110 " and " 00000001 ".Wherein the value " 11110 " of sub-header represents corresponding with the sub-header A MAC CE be DRX control command MAC CE.A in DRX control command MAC CE1Value be 1, expression need user equipment Activate additional carrier 1.A0It is worth and represents user equipment without being performed on the main carrier 0 and additional carrier 1 of activation with LTE systems for 0 Identical operation after DRX control command MAC CE is received in system.User equipment is believed in the MAC for receiving above-mentioned activation additional carrier 1 After order, additional carrier 1 is activated, and starts to receive control information and data respectively on the PDCCH and PDSCH of the additional carrier 1. After additional carrier 1 is activated, base station and user equipment all can be that the additional carrier sets a timer 1.
Since LTE-A can support another carrier wave to be scheduled by a carrier wave, that is, pass through carrier wave PDCCH sends the resource scheduling information to another carrier wave.Therefore, during user equipment activation additional carrier 1, base station may be used also Whether to need to continue to monitor to be somebody's turn to do according to channel quality instruction (CQI) notifying user equipment of user equipment on additional carrier 1 The PDCCH channels of additional carrier 1.For example, when the channel quality instruction of additional carrier 1 is poor, base station can be determined in master Additional carrier 1 is scheduled on carrier wave 0, i.e., the resource scheduling information to additional 1 is sent by the PDCCH of main carrier 0, without Resource scheduling information is sent on the PDCCH of additional carrier 1.Base station again may be by MAC PDU as shown in Figure 10 at this time Whether notifying user equipment needs to continue the PDCCH channels for monitoring additional carrier 1.Unlike but, if the additional carrier 1 It is active and the user equipment PDCCH on the additional carrier 1 is monitored, at this time A1It is worth to represent to add thereafter for 1 and carries During ripple 1 is active, user equipment need not monitor the PDCCH on the additional carrier 1.User equipment receive it is described After MAC PDU, it can stop at and blind Detecting is carried out on the PDCCH of additional carrier 1, and only go to receive on the PDSCH of additional carrier 1 Data.If the additional carrier 1 is active and user equipment does not monitor PDCCH on the additional carrier 1, at this time A1 It is worth and represents to need user equipment to monitor PDCCH on the additional carrier 1 for 1.User equipment after the MAC PDU are received, It can start to monitor PDCCH on additional carrier 1.
In t4Moment, when portfolio increases again, if the main carrier 0 and additional carrier 1 of activation can not meet its number According to rate requirement, base station will select and configure for user equipment again according to the measurement report of recently received the user's equipment The optimal additional carrier of one signal quality.Assume that the moment optimal additional carrier is additional carrier 2 in this embodiment.This Afterwards with aforementioned arrangements and activate additional carrier 1 process it is identical, base station will be user device configuration and to activate additional carrier 2 and lead to Crossing the progress of signaling RRC Connection Reconfiguration instruction users equipment, operation (is configured and activated additional accordingly Carrier wave 2).The carrier frequency of additional carrier 2, bandwidth and special can be included in signaling RRC Connection Reconfiguration Wireless resource configuration etc..The additional carrier 2 can be added in the descending carrier set of the user's equipment by base station at the same time.With After family equipment receives the signaling, it is found that base station is configured with a new additional carrier 2 for it, can be according to signaling RRC Information configuration additional carrier 2 in Connection Reconfiguration is simultaneously activated at once, starts to carry additional Control information and data are received respectively on the PDCCH and PDSCH of ripple 2.At this time, alternatively, user equipment can return to one to base station A response signaling, such as RRC Connection Reconfiguration complete signalings, is completed with representing that configuration operates. At this time, additional carrier 2 can be also added in its descending carrier set by user equipment.After additional carrier 2 are activated, base station and use Family equipment all can be that the additional carrier sets a timer 2.
In t5Moment, after the downlink traffic of user equipment is reduced, if in continuous X DRX cycle, base station and use Family equipment does not send and receive any control information and data on additional carrier 1 and additional carrier 2 respectively, then base station and User equipment can synchronously deactivate the additional carrier 1 and additional carrier 2, and delete its corresponding timer.
In t6Moment, if the signal quality of additional carrier 3 is better than the signal quality of additional carrier 2, according to user equipment Measurement report, base station can reconfigure the additional carrier of user equipment, that is, the replacement of additional carrier be carried out, by descending carrier collection Additional carrier 2 in conjunction replaces with the more preferable additional carrier 3 of signal quality, and passes through RRC Connection Reconfiguration signaling instruction user equipment correspondingly carries out reconfiguring for additional carrier.The RRC at this time The information that Connection Reconfiguration signalings include has：It is the carrier frequency for the additional carrier 2 being replaced, replaced attached Load the carrier frequency of ripple 3, the bandwidth of replaced additional carrier 3 and dedicated radio resources configuration information etc..User equipment receives institute The replacement of additional carrier is carried out after stating signaling and its descending carrier aggregate information is updated, and the downlink of user equipment carries at this time Ripple set includes main carrier 0, additional carrier 1 and additional carrier 3.If replacing the moment, additional carrier 2 is active, So after the RRC Connection Reconfiguration signalings are received, user equipment can configure and activate additional load Ripple 3.If replacing the moment, additional carrier 2 is in deactivation status, then is receiving the RRC Connection After Reconfiguration signalings, user device configuration additional carrier 3, but do not activated.In the case where user equipment has updated After row carrier set, a response signaling can be returned to base station, such as RRC Connection Reconfiguration Complete signalings.
In t7At the moment, after user equipment has moved out the coverage of additional carrier 1, will be unable to continue in the carrier wave Upper receiving service.At this time due to that can not receive the measurement report of user equipment, base station can be that user equipment reconfigure downlink load Ripple collection merga pass RRC Connection Reconfiguration signal user equipment.The RRC Connection The information that Reconfiguration signalings include has：Removed carrier frequency of additional carrier 1 etc..User equipment receives the letter Its descending carrier aggregate information is updated after order, the additional carrier 1 is removed from its descending carrier set.Remove behaviour After the completion of work, user equipment can return to a response signaling to base station, such as RRC Connection Reconfiguration Complete signalings.The descending carrier set of user equipment includes main carrier 0 and additional carrier 3 at this time.
As above only carrier aggregation system is illustrated by taking a base station and the user equipment to communicate with the base station as an example Carrier management method in system, in actual carrier aggregation, can include one or more base stations, each base station is right One or more user equipmenies are answered, each user equipment corresponding with the base station for each base station, all using above-mentioned Carrier management method.
According to above embodiment, can be turned in base station end according to the change of measurement result and user's equipment downward portfolio User equipment carries out the configuration of additional carrier, activation, deactivates and reconfigure (including replace, remove) process.Set in user Standby end, can measure the received signal quality of additional carrier according to downlink signaling and control on the PDCCH of additional carrier The reception of data on control information and PDSCH.And the method for the progress carrier management of the present invention can reduce the transmission of data The power consumption of time delay and user equipment.
The embodiment of the present invention also provides a kind of base station that carrier management is carried out in carrier aggregation system.Figure 11 is shown The structure diagram of the base station 11 of the embodiment of the present invention, illustrate only the knot closely related with scheme according to the present invention in the figure Structure.The base station 11 includes：
Indication signaling generation unit 1100 is measured, the signaling of additional carrier measurement instruction is carried for generating.The carrying The signaling of additional carrier measurement instruction is preferably RRC signaling.
Business amount detection unit 1110, for detecting the downlink traffic of user equipment.
Receiving unit 1120, for receiving the additional carrier measurement report from the user equipment.
Dispensing unit 1130, for detecting that the increase of the portfolio of user equipment makes note in the business amount detection unit Carrier wave in the current descending carrier set of the user equipment of record cannot meet that the data rate of the downlink traffic will When asking, the configuration of additional carrier is carried out for the user equipment according to the additional carrier measurement report that the receiving unit receives Operation, the configuration operation of the additional carrier include：Configure and activate at least one additional carrier, and will be described at least one attached Load ripple and add the descending carrier set.
Configuration instruction signaling generation unit 1140, the signaling of configuration instruction is carried for generating to indicate the user equipment Carry out corresponding configuration operation.The signaling for carrying configuration instruction is preferably RRC signaling.And
Transmitting element 1150, signaling and the carrying configuration for sending the carrying additional carrier measurement instruction refer to The signaling shown.
It should be appreciated that the various pieces of description of the embodiment of the present invention can pass through hardware, software, firmware or their group Close to realize.
And it is to be understood that two or more units in the base station of description of the embodiment of the present invention can be merged into one Unit, each unit can also more be subdivided into multiple subelements, not affect the realization of the present invention.
In another embodiment of the invention, as shown in figure 12, the base station 11 further includes：
Processing unit 1160 is deactivated, which is used for the downlink traffic in the user equipment During reduction, according to the downlink traffic of the user equipment for the user equipment to described at least one activated additional Carrier wave carries out deactivating operation.For example, the deactivation processing unit 1160 can (such as X, X be preferred in continuous predetermined number For the integer more than 1, but be not limited to this) discontinuous receiving cycle in not in the descending carrier set at least one When control information and data are sent on a activated additional carrier, according to the downlink traffic of the user equipment for described User equipment carries out deactivating operation at least one activated additional carrier.
In another embodiment of the invention, the base station 11 further includes：
Activate processing unit 1170, the activation processing unit 1170 in the downlink traffic increase of the user equipment, If the carrier wave in the current descending carrier set of the user equipment of record disclosure satisfy that the bandwidth of the downlink traffic It is required that then for the user equipment in the descending carrier set be in deactivation status at least one additional carrier into Line activating operates；And
Indication signaling generation unit 1180 is activated, the signaling of activation instruction is carried for generating.
At this time, the transmitting element 1150 be additionally operable to the user equipment send it is described carry activation instruction signaling with Indicate that the user equipment carries out corresponding activation operation.
In a preferred embodiment of the invention, the carrying activation of 1180 generation of activation indication signaling generation unit indicates Signaling is media access control MAC signaling, and the MAC signalings include Medium Access Control (MAC) Protocol Data Unit, Medium Access Control (MAC) Protocol Data Unit MAC Head and MAC payloads, the MAC payloads include the discontinuous reception order MAC control elements of predefined size, discontinuous reception life Make MAC control elements include and correspond to the descending carrier collection of the user equipment with bit and reserved bit, each useful bit Each carrier wave in conjunction, the activation are designated as corresponding at least one attached in deactivation status in the descending carrier set Load the predetermined value of the useful bit of ripple.
In an alternative embodiment of the invention, the base station further includes：
Indication signaling generation unit 1190 is monitored, the signaling for monitoring instruction is carried for generating.
At this time the transmitting element 1150 be additionally operable to the user equipment send it is described carry monitor instruction signaling with Indicate whether the user equipment monitors the thing at least one additional carrier being active in the descending carrier set Manage down control channel.
In a preferred embodiment of the invention, instruction is monitored in the carrying for monitoring the generation of indication signaling generation unit 1190 Signaling is media access control MAC signaling, and the MAC signalings include Medium Access Control (MAC) Protocol Data Unit, Medium Access Control (MAC) Protocol Data Unit MAC Head and MAC payloads, the MAC payloads include the discontinuous reception order MAC control elements of predefined size, discontinuous reception life Make MAC control elements include and correspond to the descending carrier collection of the user equipment with bit and reserved bit, each useful bit Each carrier wave in conjunction, the monitoring are designated as at least one additional corresponding to what is be active in the descending carrier set The predetermined value of the useful bit of carrier wave.
In an alternative embodiment of the invention, the base station further includes：
Carrier wave replacement unit 1200, for during the service connection of the user equipment, when the definite descending carrier Outside set presence signal quality more preferably additional carrier when, then by worst additional of signal quality in the descending carrier set Carrier wave replaces with the signal quality outside the descending carrier set more preferably additional carrier, wherein the signal quality is more Excellent additional carrier refers to the signal quality at least one additional carrier that signal quality is better than in the descending carrier set Additional carrier；And
Indication signaling generation unit 1210 is replaced, the signaling for replacing instruction is carried for generating.Described carry replaces instruction Signaling be preferably RRC signaling.
The transmitting element is additionally operable to send signaling (such as RRC for carrying and replacing and indicating to the user equipment at this time Signaling) to indicate that the user equipment is replaced accordingly.
In an alternative embodiment of the invention, the base station further includes：
Processing unit 1220 is removed, for during the service connection of the user equipment, when according to the measurement report When determining that presence signal mass intensity is less than the additional carrier of predetermined threshold value in the descending carrier set, by the letter Number mass intensity is removed less than the additional carrier of predetermined threshold value from the descending carrier set；And
Indication signaling generation unit 1230 is removed, the signaling for removing instruction is carried for generating.The signaling is preferably RRC letters Order.
The transmitting element also sends signaling (such as RRC letters for carrying and removing and indicating to the user equipment at this time Make), operated with indicating that the user equipment carries out corresponding remove.
Correspondingly, the embodiment of the present invention also provides a kind of user equipment 13 to communicate with base station, the user equipment In addition to the 26S Proteasome Structure and Function with conventional user devices, as shown in figure 13, further include such as lower structure：
Processing unit 1300 is configured, in downlink traffic increase, according to the carrying configuration instruction from base station Signaling carries out the configuration operation of additional carrier, and the configuration operation of the additional carrier includes：Configure and activate at least one additional Carrier wave, and at least one additional carrier is added to the descending carrier set of user equipment；And
Processing unit 1310 is deactivated, for when downlink traffic is reduced, is being received from base station under above-mentioned The deactivation of at least one additional carrier in row carrier set indicates or (such as X, X is preferably in continuous predetermined number Integer more than 1, but be not limited to this) discontinuous receiving cycle in it is not at least one in the descending carrier set When control information and data are received on additional carrier, at least one additional carrier in the descending carrier set into Row deactivating operation.
In an alternative embodiment of the invention, the user equipment 13 may also include：
Receiving unit 1320, for receiving the media access control MAC signaling from the base station；And
Processing unit 1330 is monitored in activation, and the MAC letters are corresponded to for the carrier wave in the descending carrier set Bit information in order determines whether to activate additional carrier or whether monitors the physical down control letter of activated additional carrier Road.
The MAC signalings include Medium Access Control (MAC) Protocol Data Unit, the Medium Access Control (MAC) Protocol Data Unit MAC header and MAC payloads, described MAC payloads include the discontinuous reception order MAC control elements of predefined size, the discontinuous reception order MAC control element bags Useful bit and reserved bit are included, each useful bit corresponds to each carrier wave in the descending carrier set of the user equipment, its In, for any additional carrier in the descending carrier set：When the corresponding useful bit of the additional carrier is arranged to first During value, if the additional carrier is in deactivation status, activation or the monitoring processing unit activates the additional carrier； If the additional carrier is active and monitors Physical Downlink Control Channel, the activation on the additional carrier at the same time Or monitoring processing unit stops on the additional carrier and monitors Physical Downlink Control Channel；If the additional carrier is in activation State and Physical Downlink Control Channel is not monitored on the additional carrier, then it is described activation or monitoring processing unit start described Physical Downlink Control Channel is monitored on additional carrier.
In an alternative embodiment of the invention, the receiving unit 1320 is additionally operable to exist outside the descending carrier set Signal quality more preferably additional carrier when, receive from base station carrying replace instruction radio resource control RRC signaling；At this time The user equipment 13 further includes：Processing unit 1340 is replaced, the replacement processing unit 1340 is used for according to the RRC signaling The worst additional carrier of signal quality in the descending carrier set is replaced with to the letter outside the descending carrier set Number quality more preferably additional carrier, wherein more preferably additional carrier refers to that signal quality is carried better than the downlink to the signal quality The additional carrier of the signal quality of at least one additional carrier in ripple set.
In an alternative embodiment of the invention, the receiving unit 1320 is additionally operable to the presence of letter in the descending carrier set When number mass intensity is less than the additional carrier of predetermined threshold value, the Radio Resource control that the carrying from base station removes instruction is received RRC signaling processed；The user equipment 13 further includes at this time：Processing unit 1350 is removed, the removal processing unit 1350 is used for According to the RRC signaling by additional carrier of the signal quality intensity less than predetermined threshold value from the descending carrier set Middle removal.
It should be appreciated that the various pieces of above-described embodiment description can pass through hardware, software, firmware or combinations thereof To realize.
And it is to be understood that two or more units in the user equipment of above-described embodiment description can be merged into one A unit, each unit can also more be subdivided into multiple subelements, not affect the realization of the present invention.
The feature for describing and/or showing for a kind of embodiment in the present invention can be in a manner of same or similar one Used in a or more other embodiment, and/or other implementations are combined or substitute with the feature in other embodiment Feature in mode uses.
In the above-described embodiments, multiple steps or method can be with storages in memory and by suitably referring to by the present invention Software that execution system performs or firmware is made to realize.
Any process or the method description described in other ways in flow chart or herein or frame are construed as, and are represented Including it is one or more be used for realization specific logical function or during the step of the module of code of executable instruction, piece Section or part, and the scope of the preferred embodiment of the present invention includes other realization, wherein it is possible to not by shown or discussion Order, including according to involved function by it is basic at the same time in the way of or in the opposite order, carry out perform function, this should be by Those skilled in the art of the present invention are understood.
The logic and/or step for representing or describing in other ways herein in flow charts, for example, being considered The order list of the executable instruction of logic function is used for realization, may be embodied in any computer-readable medium, with For instruction execution system, device or equipment (such as computer based system including the system of processor or other can be from instruction The system of execution system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or Equipment and use.For the purpose of this specification, " computer-readable medium " can be it is any can include, store, communicating, propagating or Transmission program uses for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment Device.Computer-readable medium can for example be but not limited to electronics, magnetic, optical, electromagnetic, infrared or semiconductor system, device, set Standby or propagation medium.The more specifically example (non-exhaustive list) of computer-readable medium includes following：With one or more The electrical connection section (electronic device) of multiple wirings, portable computer diskette box (magnetic device), random access memory (RAM) (electricity Sub-device), read-only storage (ROM) (electronic device), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory) (electronic device), optical fiber (electro-optical device), and portable optic disk read-only storage (CDROM) (Optical devices).In addition, computer Computer-readable recording medium can even is that the paper or other suitable media that can print described program on it, because can be for example by right Paper or other media carry out optical scanner, then into edlin, interpretation or if necessary with other suitable methods handled with Described program is electronically obtained, is then stored in computer storage.
Above-mentioned explanatory note and attached drawing show a variety of features of the present invention.It should be appreciated that the common skill in this area Art personnel can prepare suitable computer code to realize each step and process that are described above and illustrate in the accompanying drawings.Also It should be appreciated that various terminals described above, computer, server, network etc. can be any kind of, and can basis Disclosure is of the invention to be realized using described device to prepare the computer code.
Although that the invention has been described is specific for the only one or more being directed to above in several embodiments illustrated Feature, but can be as needed and from the aspect of favourable to any given or concrete application, by this feature and its He is combined other one or more features of embodiment.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, but also Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic Key element.
Although the embodiment of the present invention is described in detail with reference to attached drawing above, it is to be understood that reality described above The mode of applying is only intended to the explanation present invention, and is not construed as limiting the invention.For those skilled in the art, may be used To make various changes and modifications the above embodiment without departing from the spirit and scope of the invention.Therefore, it is of the invention Scope is only limited by appended claim and its equivalents.

Claims (5)

1. a kind of method for being used for carrier wave and configuring and activating performed in carrier aggregation system by base station, the described method includes：
The first signaling is sent to user equipment (UE), first signaling is used to configure at least one additional carrier, at the UE The additional carrier is deactivated；
The second signaling for carrying activation instruction is sent to UE, to indicate at least one in carrier wave of the UE activation for UE configurations A deactivated additional carrier；
At least one deactivated additional carrier is activated, and is directed to each additional carrier activated and starts or restart one Timer, with control the UE begun listening for wherein on a carrier wave PDCCH for the activated additional carrier with And start the reception of PDSCH on the activated additional carrier；
The PDCCH for the activated additional carrier is sent to the UE on one of carrier wave of the UE, The timer is restarted according to the PDCCH；
Corresponding activated additional carrier is deactivated after timer expiry, and controls the UE to be deactivated in additional carrier Afterwards, stop on one of carrier wave and monitor for the PDCCH on the deactivated additional carrier and stop at The reception of PDSCH on the deactivated additional carrier and data transfer.
2. a kind of method performed in carrier aggregation system by the user equipment (UE) of execution carrier activation, the described method includes：
The first signaling sent from base station is received, to configure at least one additional carrier, at least one additional carrier is Activation；
The second signaling for carrying activation instruction is received, it is at least one in carrier wave of the UE activation for the configuration of the UE to indicate Deactivated additional carrier；
At least one deactivated additional carrier in the carrier wave configured according to second signaling activation for the UE, and be directed to The each additional carrier activated starts or restarts a timer, so that the UE begins listening for pin on a carrier wave wherein PDCCH to the activated additional carrier and the reception for starting PDSCH on the activated additional carrier；
Received on one of carrier wave of the UE from what the base station was sent and be directed to the activated additional carrier PDCCH, the timer is restarted according to the PDCCH；
Corresponding activated additional carrier is deactivated after timer expiry, and after additional carrier deactivation, stops at institute State and monitored on one of carrier wave for the PDCCH on the deactivated additional carrier and stop at described deactivated Additional carrier on PDSCH reception and data transfer.
3. carrying out the base station of carrier activation in a kind of carrier aggregation system, the base station includes：
Transmitting element, the transmitting element send the first signaling to user equipment (UE), and first signaling is used to configure at least one Additional carrier, the additional carrier is deactivated at the UE, and the transmitting element sends to carry to the UE and swashs Second signaling of instruction living, to indicate at least one deactivated additional load in carrier wave of the UE activation for UE configurations Ripple；
Processing unit is activated, which activates at least one deactivated additional carrier, and is directed to and is activated Each additional carrier start or restart a timer, to control the UE to begin listening for being directed to institute wherein on a carrier wave State the PDCCH of activated additional carrier and start the reception of PDSCH on the activated additional carrier；It is wherein described Base station sends the PDCCH for the activated additional carrier on one of carrier wave of the UE to the UE, The timer is restarted according to the PDCCH；And
Processing unit is deactivated, which deactivates corresponding activated additional load after timer expiry Ripple, to control the UE after additional carrier deactivation, stops at monitoring on one of carrier wave and has been deactivated for described PDCCH on additional carrier living and reception and the data for stopping at PDSCH on the deactivated additional carrier Transmission.
4. the user equipment (UE) in a kind of carrier aggregation system, the UE includes：
Receiving unit, the receiving unit receive the first signaling sent from base station, to configure at least one additional carrier, it is described extremely A few additional carrier is deactivated, and the receiving unit receives the second signaling for carrying activation instruction, to indicate UE activation is stated as at least one deactivated additional carrier in the carrier wave of UE configurations；And
Processing unit is activated, which activates in the carrier wave configured for the UE at least according to second signaling One deactivated additional carrier, and start for each additional carrier activated or restart a timer, so as to described UE is begun listening on a carrier wave for the PDCCH of the activated additional carrier and described activated attached wherein Load the reception for starting PDSCH on ripple；Receive wherein on one of carrier wave of UE and be directed to from what the base station was sent The PDCCH of the activated additional carrier, the timer is restarted according to the PDCCH；And
Processing unit is deactivated, which deactivates corresponding activated additional load after timer expiry Ripple；
Wherein, the UE stops at monitoring on one of carrier wave and has been deactivated for described after additional carrier deactivation PDCCH on additional carrier living and reception and the data for stopping at PDSCH on the deactivated additional carrier Transmission.
5. a kind of communication system to be communicated using carrier aggregation, the communication system are included：
Base station；And
User equipment (UE)；
Wherein, the base station includes：
Transmitting element, the transmitting element send the first signaling to user equipment (UE), and first signaling is used to configure at least one Additional carrier, the additional carrier is deactivated at the UE, and the transmitting element sends to carry to the UE and swashs Second signaling of instruction living, to indicate at least one deactivated additional load in carrier wave of the UE activation for UE configurations Ripple；
Processing unit is activated, which activates at least one deactivated additional carrier, and is directed to and is activated Each additional carrier start or restart a timer, to control the UE to begin listening for being directed to institute wherein on a carrier wave State the PDCCH of activated additional carrier and start the reception of PDSCH on the activated additional carrier；It is wherein described Base station sends the PDCCH for the activated additional carrier on one of carrier wave of the UE to the UE, The timer is restarted according to the PDCCH；And
Processing unit is deactivated, which deactivates corresponding activated additional load after timer expiry Ripple, to control the UE after additional carrier deactivation, stops at monitoring on one of carrier wave and has been deactivated for described PDCCH on additional carrier living and reception and the data for stopping at PDSCH on the deactivated additional carrier Transmission；And
The UE includes：
Receiving unit, the receiving unit receive the first signaling sent from base station, and to configure at least one additional carrier, this is at least One additional carrier is deactivated；And the receiving unit receives the second signaling for carrying activation instruction, with described in instruction UE activation is at least one deactivated additional carrier in the carrier wave of UE configurations；And
Processing unit is activated, which activates in the carrier wave configured for the UE at least according to second signaling One deactivated additional carrier, and start for each additional carrier activated or restart a timer, so as to described UE is begun listening on a carrier wave for the PDCCH of the activated additional carrier and described activated attached wherein Load the reception for starting PDSCH on ripple；Receive on one of carrier wave of the UE and be directed to from what the base station was sent The PDCCH of the activated additional carrier, the timer is restarted according to the PDCCH；And
Processing unit is deactivated, which deactivates corresponding activated additional load after timer expiry Ripple；
Wherein, the UE stops at monitoring on one of carrier wave and has been deactivated for described after additional carrier deactivation PDCCH on additional carrier living and reception and the data for stopping at PDSCH on the deactivated additional carrier Transmission.
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