WO2010081384A1 - 无线网络中触发或上报调度请求的方法和设备 - Google Patents

无线网络中触发或上报调度请求的方法和设备 Download PDF

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Publication number
WO2010081384A1
WO2010081384A1 PCT/CN2009/076378 CN2009076378W WO2010081384A1 WO 2010081384 A1 WO2010081384 A1 WO 2010081384A1 CN 2009076378 W CN2009076378 W CN 2009076378W WO 2010081384 A1 WO2010081384 A1 WO 2010081384A1
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WIPO (PCT)
Prior art keywords
bsr
allocated
resource
available
determining
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PCT/CN2009/076378
Other languages
English (en)
French (fr)
Inventor
戴谦
陈思
张健
张银成
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to BRPI0922954A priority Critical patent/BRPI0922954A2/pt
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/119,690 priority patent/US20110255492A1/en
Priority to MX2011005989A priority patent/MX2011005989A/es
Priority to JP2011527198A priority patent/JP5193369B2/ja
Priority to EP09838171.8A priority patent/EP2378806B1/en
Priority to KR1020117006589A priority patent/KR101243875B1/ko
Publication of WO2010081384A1 publication Critical patent/WO2010081384A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • the present invention relates to an uplink resource allocation technique in the field of wireless communications, and more particularly to a method and apparatus for triggering or scheduling a scheduling request (SR, Scheduling Request) in a wireless network.
  • SR scheduling request
  • Scheduling Request Scheduling Request
  • uplink data passes through the uplink shared channel (UL).
  • UL uplink shared channel
  • -SCH Uplink Shared Channel
  • UE User Equipment
  • the LTE system has developed dedicated uplink control signaling for the user's uplink transmission requirements.
  • the control signaling related to uplink radio resource management includes SR and UE Buffer Status Report (BSR, Buffer Status Report) aside Media Access Control in LTE (MAC, Media Access)
  • BSR Buffer Status Report
  • MAC Media Access
  • the trigger condition of the SR is as follows: If the UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent, then if the UE does not have a Transmission Time Interval (TTI) The allocated uplink resource can be used for the first transmission, and when the BSR is a regular BSR, the SR is triggered.
  • TTI Transmission Time Interval
  • the process of triggering the SR in the prior art is as shown in FIG. 1 , specifically:
  • Step 101 Confirm that the UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent.
  • Steps 102 to 103 Determine whether the UE has available UL-SCH resources in the current TTI. If yes, perform step 103 to send a BSR on the allocated UL-SCH resources. If not, go to step 105.
  • step 104 all other triggered BSRs are canceled. Then go to step 107 and wait for the next TTI.
  • Steps 105-106 determining whether there is a regular BSR in the triggered BSR, if yes, executing step 106, triggering the SR; if not, executing step 107, waiting for the next TTI.
  • FIG. 1 is a schematic flowchart of reporting SR in the prior art.
  • the specific processing process includes:
  • Step 201 The UE triggers the SR.
  • Step 202 Determine whether the UE has available UL-SCH resources available at the current time. If yes, go to step 203; if not, go to step 205.
  • Steps 203 ⁇ 204 determining whether the UE receives the UL-SCH resource scheduling 4 in the current TTI, and if so, cancels all pending SRs; if not, performs step 211, waits for the next ⁇ , and continues to judge.
  • Steps 205-206 determining whether the UE has not been allocated the uplink control channel resource that can be used to send the SR, and if not, the random access process is started, and all the SRs waiting to be processed are cancelled; if they are allocated If yes, go to step 207.
  • Step 207 Determine whether the UE has an uplink control channel resource that can be used to send the SR in the current TTI. If yes, go to step 208. If step 211 is not performed, wait for the next TTI, and continue to judge.
  • Step 208 Determine whether the maximum number of transmissions of the SR is reached. If the UE does not receive the UL-SCH resource scheduling grant of the base station in a fixed period, that is, when there is no available UL-SCH resource, the UE sends the SR multiple times. , until the maximum number of transmissions of the SR is reached. If yes, go to step 209; if not, go to step 210.
  • Step 209 The UE releases the uplink control channel resource, starts the random access process, and cancels all SRs waiting to be processed.
  • Step 210 Send an SR on the uplink control channel, and then perform step 211, waiting for the next TTI.
  • the triggering and sending mechanism of the SR specified in the existing LTE MAC layer protocol is not perfect.
  • the UE receives the resource scheduling grant feedback from the base station, and the available UL-SCH is available to the UE. There is still a time interval between resources. When a regular BSR is triggered during this interval, the SR is triggered, and if the UE has an available uplink control channel during this time interval, the SR will be send. However, since the UE has obtained the resource scheduling authorization fed back by the base station, the transmission of this SR is completely unnecessary.
  • 3 is a timing diagram of a trigger and an upper 4 SR in the prior art.
  • one square in the figure indicates one TTI of the timing, and the base station allocates an uplink control channel to the UE every 5 TTIs.
  • the resource is used by the UE to send an SR to the base station, that is, the SR transmission period is 5 TTIs.
  • Event 301 the UE triggers the regular BSR1, and then triggers SR1.
  • Event 302 When the sending period of the SR arrives, the UE sends the SR1 to the base station, and requests the base station to request the scheduling of the UL-SCH resource.
  • Event 303 when the sending period of another SR arrives, the UE does not receive the scheduling grant of the UL-SCH resource, and then sends SR1 again.
  • Event 304 the UE receives the scheduling grant of the UL-SCH resource at the ,, so the SR1 waiting for processing is cancelled, that is, the SR1 is no longer sent.
  • Event 305 the UE triggers the regular BSR2, and the UE triggers the SR2 because the UE has no available UL-SCH resources in the UI.
  • Event 306 the transmission period of the SR is reached, and then the UE transmits SR2 through the uplink control channel.
  • Event 307 the UE has available UL-SCH resources in the UI.
  • Event 308 the UE sends BSR2.
  • the UE has obtained the UL-SCH resource scheduling 4 fed back by the base station in the ⁇ where the event 304 is located, so the SR2 sent by the ⁇ where the event 306 is located is not at all. If necessary, this causes an increase in the uplink control signaling overhead.
  • the base station may respond to the SR2 again, and allocate other UL-SCH resources for the UE, the bandwidth of the system is wasted, which affects the system. Spectral efficiency. Summary of the invention
  • the main object of the present invention is to provide a method and apparatus for triggering or reporting a scheduling request in a wireless network to reduce system overhead and improve system spectral efficiency.
  • the present invention provides a method for triggering a scheduling request SR, where the user equipment UE triggers a buffer status 4 report BSR, and the method further includes:
  • the SR is triggered.
  • the present invention also provides a method for reporting a scheduling request, the UE triggering the SR, the method includes: the UE determining whether the allocated UL-SCH resource for the first transmission is available at the current time, and if so, canceling all Waiting for the SR to be processed; if not, determining that the UE is allocated an uplink control channel resource that can be used to send the SR, and currently has the uplink control channel resource available for transmitting the SR, and does not reach When the maximum number of transmissions of the SR is performed, the SR is transmitted on the uplink control channel.
  • the method further includes:
  • the UE triggers the BSR, determines that there is no allocated UL-SCH resource for the first transmission available at the current time, and determines that the BSR has a set type when the BSR has not been obtained and has been triggered. , trigger SR; or, Determining that there is no allocated UL-SCH resource for the first transmission available at the current time, and determining that the BSR that has been triggered contains the BSR of the set type and that there is no UL allocated for the first transmission in the subsequent - When the SCH resource is available, the SR is triggered.
  • the present invention also provides a device for triggering a scheduling request, the device comprising:
  • a BSR triggering module configured to trigger a BSR
  • a resource determining module configured to determine that the UL-SCH resource for the first transmission that is not allocated at the current time is available
  • the device also includes:
  • the authorized determination module is configured to determine that the UL-SCH resource scheduling authorization has not been obtained when the current TTI has no allocated UL-SCH resources for the first transmission;
  • a BSR determining module configured to: when determining that the UL-SCH resource scheduling 4 has not been obtained, determine that the BSR includes a BSR of a set type;
  • the SR triggering module is configured to trigger the SR when determining that the BSR includes a BSR of a set type
  • the device also includes:
  • a BSR determining module configured to determine, when the UL_SCH resource for the first transmission that has been allocated is currently available, determining that the BSR includes a BSR of a set type
  • a subsequent resource determining module configured to determine, when the BSR includes the BSR of the set type, that the UL-SCH resource for the first transmission that is not allocated in the subsequent ⁇ is available;
  • the SR triggering module is configured to trigger the SR when no subsequent allocated UL-SCH resources for the first transmission are available.
  • the present invention also provides a device for reporting a scheduling request, the device comprising
  • a determining module configured to determine, by the UE, whether the allocated UL-SCH resource for the first transmission is available, and obtain a determination result
  • a channel determining module configured to determine, when the determining result of the determining module is negative, that the UE is divided Allocating an uplink control channel resource that can be used to send the SR, and determining that the uplink control channel resource that is available for transmitting the SR is currently unavailable;
  • an SR sending module configured to determine, when the current TTI has the uplink control channel resource that can be used for sending the SR, that the maximum number of transmissions of the SR is not reached, and send the SR on the uplink control channel.
  • the device also includes:
  • the SR canceling module is configured to cancel all the SRs waiting to be processed when the judgment result of the determining module is YES.
  • the device also includes:
  • a BSR triggering module configured to trigger a BSR
  • a resource determining module configured to determine that the UL-SCH resource for the first transmission that is not allocated at the current time is available
  • the device also includes:
  • the authorized determination module is configured to determine that the UL-SCH resource scheduling authorization has not been obtained when the current TTI has no allocated UL-SCH resources for the first transmission;
  • a BSR determining module configured to: when determining that the UL-SCH resource scheduling 4 has not been obtained, determine that the BSR includes a BSR of a set type;
  • the SR triggering module is configured to trigger the SR when determining that the BSR includes a BSR of a set type
  • the device also includes:
  • a BSR determining module configured to determine, when the UL_SCH resource for the first transmission that has been allocated is currently available, determining that the BSR includes a BSR of a set type
  • a subsequent resource determining module configured to determine, when the BSR includes the BSR of the set type, that the UL-SCH resource for the first transmission that is not allocated in the subsequent ⁇ is available;
  • the SR triggering module is configured to have no allocated UL-SCH resources for the first transmission in subsequent ⁇ When available, the SR is triggered.
  • the present invention improves the prior art from the triggering process and the reporting procedure of the SR, and adds the judgment about the UL-SCH resource scheduling 4 and the subsequent UL-SCH resources, and can accurately determine the current state of the UE, Triggering and reporting the necessary SRs can not only save the system overhead, but also avoid the unnecessary SRs sent by the base station in response to the UE, and allocate redundant UL-SCH resources to the UE, which also saves system bandwidth and improves the system. Spectral efficiency. DRAWINGS
  • FIG. 3 is a timing diagram of an embodiment of triggering and reporting SR in the prior art
  • Embodiment 4 is a schematic flowchart of Embodiment 1 of a method for triggering an SR according to the present invention
  • FIG. 5 is a schematic flowchart diagram of Embodiment 2 of a method for triggering an SR according to the present invention
  • FIG. 6 is a schematic flowchart of an embodiment of a method for reporting SR according to the present invention.
  • Embodiment 7 is a schematic structural diagram of Embodiment 1 of an apparatus for triggering SR according to the present invention.
  • Embodiment 8 is a schematic structural diagram of Embodiment 2 of an apparatus for triggering SR according to the present invention.
  • FIG. 9 is a schematic structural diagram of the structure of the device 1 for triggering and reporting the SR according to the present invention
  • FIG. 10 is a schematic structural diagram of the second embodiment of the device for triggering and uploading the SR. detailed description
  • the UE when the UE has new data to transmit on the UL-SCH, the UE notifies the base station by transmitting the SR, and requests the base station to allocate the available UL-SCH resources for the first transmission to the UE; After the UE allocates the UL-SCH resource for the first transmission, it sends a preliminary UL-SCH resource scheduling grant to the UE; the UE sends the UL-SCH resource for the first transmission indicated by the UL-SCH resource scheduling grant to the base station. BSR, to inform the base station how many new data is waiting Transmit, and request the base station to allocate a suitable size of the UL-SCH resource for the first transmission to the UE.
  • FIG. 4 is a schematic flowchart of Embodiment 1 of the method for triggering SR according to the present invention. As shown in FIG. 4, the specific process includes:
  • Step 401 The UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent.
  • the UE When the UE has new data to transmit on the UL-SCH, the UE first needs to trigger the SR.
  • a prerequisite for triggering the SR is: the UE needs to trigger the BSR for the first time, or after transmitting the BSR last time, The BSR is triggered, and the UE triggers the SR when the UE does not have the allocated UL-SCH resources available, and the triggered BSR includes the regular BSR.
  • the BSR can be set to three types: regular BSR, periodic BSR, and padded BSR.
  • the events of the trigger period BSR include: The period BSR timer expires.
  • the event of triggering the padding of the BSR includes: The UE has obtained the allocated resources of the uplink, and the number of bits of the padding bits is equal to or greater than the size of the BSR MAC layer control element.
  • condition for triggering the SR in the present invention is not limited to triggering a regular BSR, and is applicable to other types of BSRs, and of course to other events that can trigger SR.
  • a specific process of triggering an SR is illustrated by taking a triggering a conventional BSR as an example.
  • Step 402 Determine whether the UE has available UL-SCH resources for the first transmission in the current TTI, and if yes, perform step 403; if not, perform step 405.
  • the UE may have relevant record information; after receiving the authorization, the UE needs a certain decoding time to interpret the authorized content, and the authorized content may know which UE the UE can be. Obtaining the available UL-SCH resources for the first transmission, usually the decoding time is greater than 1 TTI.
  • Step 403 Send a BSR on the allocated UL-SCH resource.
  • the UE When receiving the UL-SCH resource allocated by the base station for the first transmission, the UE sends the UE-triggered BSR through the allocated UL-SCH resource for the first transmission, to inform the base station of the amount of data that the UE is currently waiting to transmit, and The base station is requested to allocate a suitable size of UL-SCH resources to the UE.
  • the UE may have triggered multiple BSRs. Which BSR is specifically sent may be selected by a set algorithm. Preferably, the BSR that is triggered last time may be sent because the BSR can correctly reflect the current UE. The amount of data waiting to be transferred.
  • Step 404 cancel all triggered BSRs, and then go to step 408 to wait for the next TTI for subsequent operations.
  • the UE cancels all the BSRs that are triggered before, so as to prevent the UE from resending one of the BSRs to the base station in the subsequent processing, thereby increasing the overhead of the system.
  • the BSR responds by allocating unnecessary UL-SCH resources to the UE.
  • Step 405 Determine whether the UE has obtained the UL-SCH resource scheduling 4 authorization. If yes, perform step 408, wait for the next ⁇ , and when the UE receives the allocated UL-SCH resource, send the BSR; if no execution step 406 is obtained .
  • the UE does not receive the UL-SCH resource allocated by the base station at the current time, it is determined whether the UE has obtained the UL-SCH resource scheduling authorization sent by the base station until the TTI time.
  • the method adds the judgment of step 405, and the judgment of the step can be used to: whether the UE has obtained the UL-SCH resource scheduling authorization so far, and if authorized, the base station has responded. If the SR is reported by the UE, the UE will obtain the UL-SCH resource after the nth TTI after the scheduling grant is obtained. Therefore, the UE obtains the UL-SCH resource. During the period between the source scheduling grant and the acquisition of the UL-SCH resource, there is no need to trigger and report the SR, thus saving the system overhead.
  • Step 406 Determine whether there is a regular BSR in the triggered BSR. If yes, go to step 407. If not, go to step 408 and wait for the next TTI to continue to determine whether the UE has allocated UL-SCH resources.
  • the BSR is a regular BSR or a periodic BSR or other type of BSR. It can be judged according to the event that triggers the BSR. For example, the BSR can be added to the BSR according to the trigger event. Of course, the method of judging the type of the BSR is not limited to this.
  • Step 407 triggering the SR.
  • the UE triggers the SR according to the triggered regular BSR.
  • the present invention provides a device, as shown in FIG. 7, which is a schematic structural relationship of the device 1 for triggering the SR according to the present invention.
  • the device includes:
  • the BSR triggering module 71 is configured to trigger the BSR. Specifically, the UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent.
  • the resource determining module 72 is configured to determine that no allocated UL-SCH resources are available in the current TTI.
  • the authorization determination module 73 is configured to determine that the UL-SCH resource scheduling authorization has not been obtained when it is determined that no allocated UL-SCH resources are available at the current time.
  • the BSR determining module 74 is configured to determine, when determining that the UL-SCH resource scheduling authorization has not been obtained, the BSR in the triggered BSR that includes the set type.
  • the SR triggering module 75 is configured to trigger the SR when the BSR that determines the triggering includes a regular BSR.
  • FIG. 5 is a schematic flowchart of Embodiment 2 of the method for triggering SR according to the present invention. As shown in the figure, a specific processing procedure includes:
  • Steps 501 to 504 are the same as steps 401 to 404 in FIG. 4, and details are not described herein again.
  • Step 505 Determine whether there is a regular BSR in the triggered BSR. If yes, perform the step. 506. If the execution step 508 is not included, wait for the next ⁇ , and continue to determine whether the UE has an allocated UL-SCH resource available.
  • the UE determines whether there is a regular BSR in the triggered BSR. The judgment of this step is the same as the judgment method of step 406 in Fig. 4, and details are not described herein again.
  • Step 506 Determine whether the UE has the allocated UL-SCH resource for the first transmission in the subsequent TTI. If not, execute step 507; if yes, go to step 508.
  • the base station sends a UL-SCH resource scheduling grant to the UE in response to the SR sent by the UE, and the UE may have relevant record information when receiving the UL-SCH resource scheduling grant; after receiving the authorization, the UE needs a certain decoding time to interpret the authorization.
  • Content from the authorized content, it can be known which UE can obtain available UL-SCH resources for the first transmission, and the decoding time is usually greater than 1 TTI.
  • the UE can determine whether the UE receives the UL-SCH resource scheduling grant sent by the base station, and can determine whether the UE can obtain the UL-SCH resource allocated by the base station for the first transmission according to the authorization. . When it is determined that the UE has the allocated UL-SCH resources for the first transmission available in the subsequent time, starting from the current TTI, there is no need to trigger and uplink the SR, thus saving the system overhead.
  • step 508 is performed, waiting for the next ⁇ , and transmitting the BSR in the allocated TTI for the first-time UL-SCH resource arrival; if not, indicating that the base station does not respond before The SR or the UE sent by the UE has not sent the SR to the base station.
  • the UE triggers the SR according to the triggered regular BSR.
  • the present invention provides a device, which is shown in FIG.
  • the BSR triggering module 71 is configured to trigger the BSR. Specifically, the UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent.
  • the resource determining module 72 is configured to determine that no allocated UL-SCH resources are available in the current TTI.
  • the BSR determining module 74 is configured to determine, when the current UL_SCH resource is not available, that the triggered BSR contains the BSR of the set type.
  • the subsequent resource determining module 81 is configured to determine, when the BSR that is triggered to include the BSR of the set type, that the allocated UL-SCH resource is available in the subsequent ⁇ .
  • the SR triggering module 75 is configured to trigger the SR when no subsequent allocated UL-SCH resources are available.
  • FIG. 6 is a schematic flowchart of an embodiment of an SR method according to the present invention. As shown in the figure, the processing process includes:
  • Step 601 The UE triggers the SR.
  • step 603 After the UE triggers the SR, it is determined whether the UE has the allocated UL-SCH resource for the first transmission available at the current time. If yes, the base station has responded to the SR sent before the UE, and the UE has been allocated for the first transmission. The UL-SCH resource is then executed in step 603 to cancel all SRs waiting to be processed; if not, step 604 is performed.
  • Steps 604-605 determining whether the UE is not allocated the uplink control channel resource that can be used to send the SR, and if yes, executing step 605, starting the random access process, and canceling all the SRs waiting to be processed; if not, Step 606 is performed.
  • the UE reports the SR to the base station through the uplink control channel, and the uplink control channel resource is allocated by the base station to the UE.
  • the related information may be recorded.
  • a period for allocating the uplink control channel resource to the UE that is, the SR transmission period, may be set, and one cycle includes at least one TTI.
  • it can be determined whether the UE has been allocated uplink control channel resources until the current time. If no, say The connection between the UE and the base station may be abnormal. The UE initiates a random access procedure, establishes a connection with the base station again, and cancels all SRs waiting to be processed.
  • Step 606 Determine whether the UE has an uplink control channel resource that can be used to send the SR at the current time. If not, execute step 610, wait for the next frame, and continue to determine whether the UE has an uplink control channel resource that can be used to send the SR in the current TTI. If yes, go to step 607.
  • the UE is allocated an uplink control channel resource that can be used to transmit the SR, the connection between the UE and the base station is normal, and then it is determined whether the UE has an uplink control channel resource available for transmitting the SR at the current time.
  • Steps 607-608 determining whether the maximum number of transmissions of the SR is reached. If yes, executing step 608, the UE releases the uplink control channel resource, starts the random access process, and cancels all the SRs waiting to be processed; if not, performs the steps. 609.
  • the UE calculates the number of times the UE sends the SR from the first time to the current TTI when the number of times the UE sends the SR to the current TTI. If the number of times reaches the maximum number of times the SR is sent, the UE does not connect to the base station. Normally, the UE releases the uplink control channel resource, starts the random access process, and cancels all the SRs waiting to be processed. If the number of times does not reach the maximum number of transmissions of the SR, step 609 is performed.
  • Steps 609 ⁇ 610 sending the SR on the uplink control channel, and then waiting for the next TTI, and executing the process cyclically.
  • the UE transmits the SR through the uplink control channel at the current time, that is, reports the SR to the base station, and then starts the loop execution in the next TTI.
  • the method flow of the upper 4 ⁇ SR shown in FIG. 6 can be combined with the method flow of triggering the SR shown in FIG. 4 or FIG. 5, respectively, to obtain a method flow of triggering and “ ⁇ SR”, in order to implement the method flow,
  • the present invention provides a device for triggering and reporting an SR, as shown in FIG. 9 is a schematic structural diagram of Embodiment 1 of a device that triggers and reports an SR according to the present invention.
  • the device includes:
  • the BSR triggering module 71 is configured to trigger the BSR. Specifically, the UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent.
  • the resource determining module 72 is configured to determine that no allocated UL-SCH resources are available in the current TTI.
  • the authorization determination module 73 is configured to determine that the UL-SCH resource scheduling authorization has not been obtained when it is determined that no allocated UL-SCH resources are available at the current time.
  • the BSR determining module 74 is configured to determine, when determining that the UL-SCH resource scheduling authorization has not been obtained, the BSR in the triggered BSR that includes the set type.
  • the SR triggering module 75 is configured to trigger the SR when determining that the triggered BSR contains the BSR of the set type.
  • the determining module 91 is configured to determine, after triggering the SR, whether the UE has the allocated UL-SCH resource for the first transmission available at the current time, and obtain a determination result.
  • the SR canceling module 92 is configured to cancel all pending SRs when the judgment result of the determining module is YES;
  • the channel determining module 93 is configured to: when the determining result of the determining module is negative, determine that the UE is allocated an uplink control channel resource that can be used to send the SR, and determine that the uplink control channel resource that is available for transmitting the SR is currently available.
  • the SR sending module 94 is configured to determine that the maximum number of transmissions of the SR is not reached when the current uplink control channel resource is available for transmitting the SR, and send the SR on the uplink control channel.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of a device for triggering and reporting an SR according to the present invention. As shown in the figure, the device includes:
  • the BSR triggering module 71 is configured to trigger the BSR. Specifically, the UE triggers the BSR for the first time, or triggers the BSR after the last time the BSR is sent.
  • the resource determining module 72 is configured to determine that no allocated UL-SCH resources are available in the current TTI.
  • the BSR determining module 74 is configured to determine, when the current UL_SCH resource is not available, that the triggered BSR contains the BSR of the set type.
  • the subsequent resource determining module 81 is configured to: when it is determined that the triggered BSR includes the BSR of the set type, determine that no allocated UL-SCH resources are available in the subsequent ⁇ .
  • the SR triggering module 75 is configured to trigger the SR when no subsequent UL-SCH resources are available in the subsequent TTI.
  • the determining module 91 is configured to determine, after triggering the SR, whether the UE has the allocated UL-SCH resource for the first transmission available at the current time, and obtain a determination result.
  • the SR canceling module 92 is configured to cancel all pending SRs when the judgment result of the determining module is YES;
  • the channel determining module 93 is configured to: when the determining result of the determining module is negative, determine that the UE is allocated an uplink control channel resource that can be used to send the SR, and determine that the uplink control channel resource that is available for transmitting the SR is currently available.
  • the SR sending module 94 is configured to determine that the maximum number of transmissions of the SR is not reached when the current uplink control channel resource is available for transmitting the SR, and send the SR on the uplink control channel.

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Description

无线网络中触发或上"^调度请求的方法和设备 技术领域
本发明涉及无线通信领域中上行链路资源分配技术， 特别是指一种在 无线网络中触发或上 4艮调度请求（SR, Scheduling Request )的方法和设备。 背景技术
在第三代移动通信长期演进（LTE, Long Term Evolution ) 系统的演进 型通用陆地无线接入网 （E-UTRAN , Evolved Universal Terrestrial Radio Access Network )中， 上行链路的数据通过上行共享信道（ UL-SCH, Uplink Shared Channel )进行传输， 并由基站将上行链路资源分配给每个用户设备 ( UE, User Equipment )。 LTE系统为用户的上行传输需求制定了专门的上 行链路控制信令。 在上行链路控制信令中， 与上行链路无线资源管理相关 的控制信令包含 SR和 UE緩冲区状态报告 ( BSR, Buffer Status Report )„ 在 LTE的媒体接入控制 （MAC, Media Access Control )层协议中， SR 的触发条件规定如下：如果 UE是首次触发 BSR,或者是在上一次发送 BSR 之后，又触发过 BSR,那么如果 UE在当前传输时间间隔（ TTI, Transmission Time Interval )没有分配的上行链路资源可用于首传，且该 BSR是常规 BSR 时， 则触发 SR。 现有技术中触发 SR的流程如图 1所示， 具体为：
步骤 101 , 确认 UE首次触发 BSR, 或者在上一次发送 BSR之后又触 发了 BSR。
步骤 102~103 ,判断 UE在当前 TTI是否有已分配的 UL-SCH资源可用， 如果有， 执行步骤 103 , 在分配的 UL-SCH的资源上发送 BSR; 如果没有， 执行步骤 105。
步骤 104, 取消其他所有已触发的 BSR。 然后执行步骤 107, 等待下一 个 TTI。
步骤 105~106, 判断已触发的 BSR中是否有常规 BSR, 如果有， 执行 步骤 106, 触发 SR; 如果没有， 执行步骤 107, 等待下一个 TTI。
SR的上报需要使用上行控制信道， 该上行控制信道资源由基站为 UE 预先分配。如图 2所示为现有技术中上报 SR的流程示意图， 具体的处理流 程包括：
步骤 201 , UE触发 SR。
步骤 202, 判断 UE在当前 ΤΉ是否有已分配的 UL-SCH资源可用， 如 果有， 执行步骤 203; 如果没有， 执行步骤 205。
步骤 203~204, 判断 UE在当前 TTI是否收到 UL-SCH资源调度 4受权， 如果收到， 取消所有等待处理的 SR; 如果没有收到， 执行步骤 211 , 等待 下一个 ΤΉ, 继续进行判断。
步骤 205~206, 判断 UE是否在任何 ΤΉ都没有被分配过可用于发送 SR的上行控制信道资源， 如果没有被分配过， 则启动随机接入进程， 并取 消所有等待处理的 SR; 如果被分配过， 则执行步骤 207。
步骤 207, 判断 UE在当前 TTI是否有可用于发送 SR的上行控制信道 资源， 如果有， 执行步骤 208; 如果没有执行步骤 211 , 等待下一个 TTI, 继续进行判断。
步骤 208, 判断是否达到了 SR的最大发送次数， UE在一个固定的周 期内如果没有收到基站的 UL-SCH 资源调度授权， 也就是没有可用的 UL-SCH资源时， UE会多次发送 SR, 直到达到 SR的最大发送次数。 如果 达到， 执行步骤 209; 如果没有达到， 执行步骤 210。
步骤 209, UE释放上行控制信道资源， 启动随机接入进程， 并取消所 有等待处理的 SR。
步骤 210, 在上行控制信道上发送 SR, 然后执行步骤 211 , 等待下一 个 TTI。
如图 1、 图 2所示， 现有的 LTE的 MAC层协议中规定的 SR的触发和 发送机制尚不完善， 从 UE收到基站反馈的资源调度授权开始， 到 UE有可 用的 UL-SCH资源之间， 尚存在一段时间间隔， 当在这段时间间隔内触发 了常规 BSR, 就会随之触发 SR, 并且如果在这段时间间隔内该 UE有可用 的上行控制信道， 则 SR会被发送。 但由于该 UE已经获得了基站反馈的资 源调度授权， 因此这个 SR的发送是完全无必要的。 图 3为现有技术中触发 和上 4艮 SR—实施例的时序图， 如图所示， 图中一个方格表示时序的 1 个 TTI, 基站每隔 5个 TTI向 UE分配一次上行控制信道资源用于 UE向基站 发送 SR, 即 SR的发送周期为 5个 TTI。
事件 301 , UE触发常规 BSR1 , 随之触发 SR1。
事件 302, 在 SR的发送周期到来时， UE向基站发送 SR1 , 向基站请 求 UL-SCH资源的调度授权。
事件 303 , 在又一个 SR的发送周期到来时， UE没有收到 UL-SCH资 源的调度授权， 于是再次发送 SR1。
事件 304, UE在该 ΤΉ收到了 UL-SCH资源的调度授权， 所以取消了 等待处理的 SR1 , 即不再发送 SR1。
事件 305 , UE触发常规 BSR2, 由于 UE在该 ΤΉ没有可用的 UL-SCH 资源， 因此 UE触发了 SR2。
事件 306, 到达了 SR的发送周期， 于是 UE在该 ΤΉ通过上行控制信 道发送 SR2。
事件 307, UE在该 ΤΉ有可用的 UL-SCH资源。
事件 308, UE发送 BSR2。
通过上述的过程可见， UE在事件 304所在的 ΤΉ已经获得了基站反馈 的 UL-SCH资源调度 4受权， 因此事件 306所在的 ΤΉ发送的 SR2是完全不 必要的， 这就导致了上行控制信令开销增大， 此外由于基站可能对该 SR2 再次响应， 为该 UE再分配其他的 UL-SCH资源， 这就造成了系统的带宽 浪费， 影响了系统的频谱效率。 发明内容
有鉴于此， 本发明的主要目的在于提供一种无线网络中触发或上报调 度请求的方法和设备， 以减小系统的开销， 提高系统的频谱效率。
为达到上述目的， 本发明的技术方案是这样实现的：
本发明提供了一种触发调度请求 SR的方法， 用户设备 UE触发緩冲区 状态 4艮告 BSR, 该方法还包括：
确定在当前传输时间间隔 ΤΉ没有已分配的用于首传的上行共享信道 UL-SCH资源可用， 并在确定还没有获得 UL-SCH资源调度授权、 且已触 发的所述 BSR中含有设定类型的 BSR时， 触发 SR; 或者，
确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH资源可用， 并在确 定已触发的所述 BSR中含有设定类型的 BSR、且在后续 ΤΉ没有已分配用 于首传的 UL-SCH资源可用时， 触发 SR。
本发明还提供了一种上报调度请求的方法， UE触发 SR, 该方法包括： 所述 UE判断在当前 ΤΉ是否有已分配的用于首传的 UL-SCH资源可 用， 如果是， 则取消所有等待处理的所述 SR; 如果否， 则确定所述 UE被 分配过可用于发送所述 SR的上行控制信道资源，并在当前 ΤΉ有可用于发 送 SR的所述上行控制信道资源、 且没有达到 SR的最大发送次数时， 在所 述上行控制信道上发送所述 SR。
在所述 UE触发 SR之前， 该方法还包括：
UE触发 BSR,确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH资源 可用， 并在确定还没有获得 UL-SCH资源调度授权且已触发的所述 BSR中 含有设定类型的 BSR时， 触发 SR; 或者， 确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH资源可用， 并在确 定已触发的所述 BSR中含有设定类型的 BSR且在后续 ΤΤΙ没有已分配的用 于首传的 UL-SCH资源可用时， 触发 SR。
本发明还提供了一种触发调度请求的设备， 该设备包括：
BSR触发模块， 用于触发 BSR;
资源确定模块，用于确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH 资源可用；
该设备还包括：
4受权确定模块， 在当前 TTI没有已分配的用于首传的 UL-SCH资源可 用时， 用于确定还没有获得 UL-SCH资源调度授权；
BSR确定模块， 用于在确定还没有获得 UL-SCH资源调度 4受权时， 确 定所述 BSR中含有设定类型的 BSR;
SR触发模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 触发 所述 SR;
或者， 该设备还包括：
BSR确定模块， 用于在当前 ΤΉ没有已分配的用于首传的 UL-SCH资 源可用时， 确定所述 BSR中含有设定类型的 BSR;
后续资源确定模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 确定在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源可用；
SR触发模块，用于在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源 可用时， 触发 SR。
本发明还提供了一种上报调度请求的设备， 该设备包括，
判断模块， 用于判断 UE 在当前 ΤΉ 是否有已分配的用于首传的 UL-SCH资源可用， 并得到判断结果；
信道确定模块，用于在所述判断模块的判断结果为否时，确定 UE被分 配过可用于发送 SR的上行控制信道资源，并确定在当前 ΤΉ有可用于发送 SR的所述上行控制信道资源；
SR发送模块， 用于在当前 TTI有可用于发送 SR的所述上行控制信道 资源时， 确定没有达到 SR的最大发送次数， 并在所述上行控制信道上发送 所述 SR。
该设备还包括：
SR取消模块， 用于在所述判断模块的判断结果为是时， 取消所有等待 处理的所述 SR。
该设备还包括：
BSR触发模块， 用于触发 BSR;
资源确定模块，用于确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH 资源可用；
该设备还包括：
4受权确定模块， 在当前 TTI没有已分配的用于首传的 UL-SCH资源可 用时， 用于确定还没有获得 UL-SCH资源调度授权；
BSR确定模块， 用于在确定还没有获得 UL-SCH资源调度 4受权时， 确 定所述 BSR中含有设定类型的 BSR;
SR触发模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 触发 所述 SR;
或者， 该设备还包括：
BSR确定模块， 用于在当前 ΤΉ没有已分配的用于首传的 UL-SCH资 源可用时， 确定所述 BSR中含有设定类型的 BSR;
后续资源确定模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 确定在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源可用；
SR触发模块，用于在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源 可用时， 触发 SR。
本发明分别从 SR的触发流程和上报流程对现有技术作了改进，增加了 关于 UL-SCH资源调度 4受权、 后续 UL-SCH资源等的判断， 可以准确地判 断出 UE目前的状态， 只触发和上报必要的 SR, 如此不仅可以节省系统的 开销， 还可以避免基站响应 UE发送的不必要的 SR, 而为 UE分配多余的 UL-SCH资源， 同时也节省了系统带宽， 提高了系统的频谱效率。 附图说明
图 1为现有技术中触发 SR的流程示意图；
图 2为现有技术中上报 SR的流程示意图；
图 3为现有技术中触发和上报 SR—实施例的时序图；
图 4为本发明触发 SR的方法实施例 1的流程示意图；
图 5为本发明触发 SR的方法实施例 2的流程示意图；
图 6为本发明上报 SR的方法一实施例的流程示意图；
图 7为本发明触发 SR的设备实施例 1的结构关系示意图；
图 8为本发明触发 SR的设备实施例 2的结构关系示意图；
图 9为本发明触发并上报 SR的设备实施例 1的结构关系示意图； 图 10为本发明触发并上 4艮 SR的设备实施例 2的结构关系示意图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 在 LTE系统中， 当 UE有新数据需要在 UL-SCH上进行传输时， UE通 过发送 SR来通知基站，请求基站为 UE分配可用的用于首传的 UL-SCH资 源； 当基站确认可以为该 UE分配用于首传的 UL-SCH资源后， 为 UE发送 初步的 UL-SCH资源调度授权； UE再依据 UL-SCH资源调度授权所指示的 用于首传的 UL-SCH资源向基站发送 BSR, 以告知基站有多少新数据等待 传输， 并请求基站为 UE分配合适大小的用于首传的 UL-SCH资源。
下面通过具体的实施例来说明本发明触发 SR的处理流程。
图 4为本发明触发 SR方法实施例 1的流程示意图， 如图 4所示， 具体 流程包括：
步骤 401 , UE首次触发 BSR, 或者是在上一次发送 BSR之后， 又触发 了 BSR。
当 UE有新数据需要在 UL-SCH上进行传输时， UE首先需要触发 SR, 在 LTE系统中， 规定触发 SR的一个前提条件是： UE需首次触发 BSR, 或 者在上一次发送 BSR之后， 又触发了 BSR, 那么 UE在当前 ΤΉ没有分配 的 UL-SCH资源可用， 且触发的 BSR中包含常规 BSR时， 触发 SR。
在 LTE的 MAC层协议的规定中， 根据触发条件的不同， 可以将 BSR 设定为： 常规 BSR、 周期 BSR和填充 BSR三类。
其中，触发常规 BSR的事件有多种， 包括： 有可用数据等待传输而 UE 的緩冲区为空；有更高优先级的可用数据等待传输而 UE的緩冲区内等待传 输的可用数据的优先级较低； UE所属的服务小区发生变化； 重传 BSR定 时器超时， 但 UE中有可用的数据等待传送。
触发周期 BSR的事件包括： 周期 BSR定时器超时。
触发填充 BSR的事件包括： UE 已经获得上行链路的分配资源， 且填 充位的比特数量等于或大于 BSR MAC层控制元的大小。
需要指出的是，本发明中触发 SR的条件并不限于触发常规 BSR,对于 其他设定类型的 BSR也适用， 当然也适用于其他可以触发 SR的事件。 在 本发明中以触发常规 BSR为例来说明触发 SR的具体流程。
步骤 402,判断 UE在当前 TTI是否有已分配的用于首传的 UL-SCH资 源可用， 如果有， 执行步骤 403; 如果没有， 执行步骤 405。
判断在当前的 TTI基站是否向 UE分配了用于首传的 UL-SCH资源。 在收到基站分配的 UL-SCH资源调度授权时， UE会有相关的记录信息； UE收到授权后， 需要一定的解码时间来解读授权内容， 从授权内容中可以 得知 UE在哪个 ΤΉ可以获得可用的用于首传的 UL-SCH资源， 通常该解码时 间大于 1个 TTI。
步骤 403 , 在分配的 UL-SCH资源上发送 BSR。
UE收到基站分配的用于首传的 UL-SCH资源时， 在该 TTI通过分配的用 于首传的 UL-SCH资源发送 UE触发的 BSR, 以告知基站 UE目前等待传输的 数据量， 并请求基站为 UE分配合适大小的 UL-SCH资源。
在发送 BSR时， UE可能已经触发了多个 BSR, 具体发送哪一个触发的 BSR可以通过设定的算法来选择， 较佳地， 可以发送最近一次触发的 BSR, 因为该 BSR能正确反应当前 UE等待传输的数据量。
步骤 404,取消所有已触发的 BSR, 然后执行步骤 408, 等待下一个 TTI, 进行后续的操作。
UE将 BSR发送给基站后， 将之前触发的所有 BSR全部取消， 以避免在 以后的处理中 UE将这些 BSR中的某一个 BSR再发送给基站， 增加系统的开 销； 同时也避免了基站对该 BSR响应， 为 UE分配不必要的 UL-SCH资源。
步骤 405 , 判断 UE是否已经获得了 UL-SCH资源调度 4受权， 如果获得， 执行步骤 408,等待下一个 ΤΉ,当 UE收到分配的 UL-SCH资源时，发送 BSR; 如果没有获得执行步骤 406。
如果 UE在当前 ΤΉ没有收到基站分配的 UL-SCH资源，那么判断 UE到该 TTI时刻为止是否已经获得了基站发送的 UL-SCH资源调度授权。
与现有技术的流程相比， 本发明增加了步骤 405的判断， 通过该步骤的 判断可以得知： 到目前为止 UE是否得到了 UL-SCH资源调度授权， 如果得 到授权， 说明基站已经响应了之前 UE上报的 SR, 则 UE在得到调度授权的 ΤΉ之后的第 n个 TTI一定会获得 UL-SCH资源， 因此， UE在获得 UL-SCH资 源调度授权到获得 UL-SCH资源之间的这段时间内， 没有必要再触发并上报 SR了， 如此就节省了系统的开销。
步骤 406, 判断已触发的 BSR中是否有常规 BSR, 如果含有， 执行步骤 407; 如果不含有， 执行步骤 408, 等待下一个 TTI, 继续判断 UE是否有已分 配的 UL-SCH资源可用。
判断 BSR是属于常规 BSR, 还是周期 BSR或者其他类型的 BSR, 可以依 据触发 BSR的事件的不同来判断，如可以依据触发事件为 BSR添加对应的标 志， 通过标志可以区分 BSR的类型。 当然， 判断 BSR的类型的方法不仅限于 此。
步骤 407, 触发 SR。
UE依据触发的常规 BSR触发 SR。
为了实现图 4所示的触发 SR的方法， 本发明提出了一种设备， 如图 7所 示为本发明触发 SR的设备实施例 1的结构关系示意图， 该设备包括：
BSR触发模块 71 , 用于触发 BSR; 具体指 UE首次触发 BSR, 或者是 在上一次发送 BSR之后， 又触发了 BSR。
资源确定模块 72,用于确定在当前 TTI没有已分配的 UL-SCH资源可用。
4受权确定模块 73 , 用于在确定在当前 ΤΉ没有已分配的 UL-SCH资源 可用时， 确定还没有获得 UL-SCH资源调度授权。
BSR确定模块 74, 用于在确定还没有获得 UL-SCH资源调度授权时， 确定触发的 BSR中含有设定类型的 BSR。
SR触发模块 75 ,用于在确定触发的 BSR中含有常规 BSR时，触发 SR。 图 5为本发明触发 SR方法实施例 2的流程示意图， 如图所示， 具体的 处理流程包括：
步骤 501~步骤 504与图 4中步骤 401~404相同， 此处不再赘述。
步骤 505 , 判断已触发的 BSR中是否有常规 BSR, 如果含有， 执行步骤 506, 如果不含有执行步骤 508, 等待下一个 ΤΉ, 继续判断 UE是否有已分配 的 UL-SCH资源可用。
如果 UE在当前 ΤΉ没有收到基站分配的 UL-SCH资源， 则判断已触发的 BSR中是否有常规 BSR。该步骤的判断与图 4中步骤 406的判断方法相同， 此 处不再赘述。
步骤 506, 判断 UE在后续 TTI是否有已分配的用于首传的 UL-SCH资源 可用， 如果没有， 则执行步骤 507; 如果有， 执行步骤 508。
基站响应 UE发送的 SR, 向 UE发送 UL-SCH资源调度授权， UE在收到 UL-SCH资源调度授权时， 会有相关的记录信息； UE收到授权后， 需要一 定的解码时间来解读授权内容，从授权内容中可以得知 UE在哪个 ΤΉ可以获 得可用的用于首传的 UL-SCH资源， 通常该解码时间大于 1个 TTI。
UE在当前 ΤΉ可以判断出到当前 ΤΉ为止是否收到了基站发送的 UL-SCH资源调度授权， 依据该授权可以判断出 UE在后续的 TTI是否能够得 到基站分配的用于首传的 UL-SCH资源。 当判断出 UE在后续的 ΤΉ有已分配 的用于首传的 UL-SCH资源可用时， 则从当前 TTI开始， 就不需要再触发并 上 4艮 SR, 如此就节省了系统的开销。
如果有， 说明基站已经响应了之前 UE发送的 SR, 则执行步骤 508 , 等 待下一个 ΤΉ, 在分配的用于首传的 UL-SCH资源到来的 TTI发送 BSR; 如果 没有， 说明基站没有响应之前 UE发送的 SR或者 UE还没有向基站发送 SR, 执行步骤 507 , UE依据触发的常规 BSR触发 SR。
为了实现图 5所示的触发 SR的方法， 本发明提出了一种设备， 如图 8所 示为本发明触发 SR的设备实施例 2的结构关系示意图， 该设备包括：
BSR触发模块 71 , 用于触发 BSR; 具体指 UE首次触发 BSR, 或者是 在上一次发送 BSR之后， 又触发了 BSR。
资源确定模块 72,用于确定在当前 TTI没有已分配的 UL-SCH资源可用。 BSR确定模块 74用于在当前 ΤΉ没有已分配的 UL-SCH资源可用时， 确定触发的 BSR中含有设定类型的 BSR。
后续资源确定模块 81 ,用于在确定触发的 BSR中含有设定类型的 BSR 时， 确定在后续 ΤΉ没有已分配的 UL-SCH资源可用。
SR触发模块 75 , 用于在后续 ΤΉ没有已分配的 UL-SCH资源可用时， 触发 SR。 图 6为本发明上 4艮 SR方法一实施例的流程示意图， 如图所示， 该处理流 程包括：
步骤 601 , UE触发 SR。
步骤 602~603 , 判断 UE在当前 TTI是否有已分配的用于首传的 UL-SCH 资源可用， 如果是， 执行步骤 603 , 取消所有等待处理的 SR; 如果否， 执行 步骤 604。
UE触发 SR之后， 判断 UE在当前 ΤΉ是否有已分配的用于首传的 UL-SCH资源可用， 如果是， 说明基站已经响应了 UE之前发送的 SR, 并且 已经为 UE分配了用于首传的 UL-SCH资源， 然后执行步骤 603 , 取消所有等 待处理的 SR; 如果否， 执行步骤 604。
步骤 604~605 ,判断 UE是否在任何 ΤΉ都没有被分配过可用于发送 SR的 上行控制信道资源， 如果是， 执行步骤 605 , 启动随机接入进程， 并取消所 有等待处理的 SR; 如果否， 执行步骤 606。
UE通过上行控制信道向基站上报 SR, 上行控制信道资源由基站向 UE 分配。 当 UE被分配上行控制信道资源时， 会有相关的记录的信息； 或者， 可以根据需要设定一个为 UE分配上行控制信道资源的周期、 即 SR的发送周 期， 一个周期至少包含一个 TTI, 当然也可以有其他的方式。 依据这些信息 可以判断出 UE到当前 ΤΉ为止是否被分配过上行控制信道资源。如果否，说 明 UE与基站的连接可能不正常， UE启动随机接入进程， 再次与基站建立连 接， 并取消所有等待处理的 SR。
步骤 606 , 判断 UE在当前 ΤΉ是否有可用于发送 SR的上行控制信道资 源， 如果没有， 则执行步骤 610, 等待下一个 ΤΉ, 继续判断 UE在当前 TTI 是否有可用于发送 SR的上行控制信道资源； 如果有， 则执行步骤 607。
如果 UE被分配过可用于发送 SR的上行控制信道资源，说明 UE与基站的 连接正常， 然后判断 UE在当前 ΤΉ是否有可用于发送 SR的上行控制信道资 源。
步骤 607~608, 判断是否达到了 SR的最大发送次数， 如果达到， 执行步 骤 608, UE释放上行控制信道资源， 启动随机接入进程， 并取消所有等待处 理的 SR; 如果没有达到， 则执行步骤 609。
根据需要可以设定每隔 n个 ΤΉ发送一次 SR,且 SR的最大发送次数为 m, 其中， n、 m为自然数。 UE在当前 ΤΉ有可用于发送 SR的上行控制信道资源 时， 计算 UE从第一次发送 SR到当前 TTI发送 SR的次数， 如果该次数达到了 SR的最大发送次数，说明 UE与基站的连接不正常， UE释放上行控制信道资 源， 启动随机接入进程， 并取消所有等待处理的 SR; 如果该次数没有达到 SR的最大发送次数， 则执行步骤 609。
步骤 609~610, 在上行控制信道上发送 SR, 之后等待下一个 TTI, 循环 执行本流程。
UE在当前 ΤΉ通过上行控制信道发送 SR, 即向基站上报 SR, 之后在下 一个 TTI, 开始循环执行本流程。
其中， 图 6所示的上 4艮 SR的方法流程可以分别与图 4或图 5所示触发 SR 的方法流程结合， 得到一种触发并上 "^SR的方法流程， 为了实现该方法流 程， 本发明提供了一种触发并上报 SR的设备， 如图 9所示为本发明触发并上 报 SR的设备实施例 1的结构关系示意图， 该设备包括： BSR触发模块 71 , 用于触发 BSR; 具体指 UE首次触发 BSR, 或者是 在上一次发送 BSR之后， 又触发了 BSR。
资源确定模块 72,用于确定在当前 TTI没有已分配的 UL-SCH资源可用。
4受权确定模块 73 , 用于在确定在当前 ΤΉ没有已分配的 UL-SCH资源 可用时， 确定还没有获得 UL-SCH资源调度授权。
BSR确定模块 74, 用于在确定还没有获得 UL-SCH资源调度授权时， 确定触发的 BSR中含有设定类型的 BSR。
SR触发模块 75 , 用于在确定触发的 BSR中含有设定类型的 BSR时， 触 发 SR。
判断模块 91 , 用于在触发 SR之后， 判断 UE在当前 ΤΉ是否有已分 配的用于首传的 UL-SCH资源可用， 并得到判断结果。
SR取消模块 92, 用于在判断模块的判断结果为是时，取消所有等待处 理的 SR;
信道确定模块 93 , 用于在判断模块的判断结果为否时， 确定 UE被分 配过可用于发送 SR的上行控制信道资源，并确定在当前 ΤΉ有可用于发送 SR的所述上行控制信道资源。
SR发送模块 94, 用于在当前 ΤΉ有可用于发送 SR的上行控制信道资源 时， 确定没有达到 SR的最大发送次数， 并在上行控制信道上发送 SR。
图 10所示为本发明触发并上报 SR的设备实施例 2的结构关系示意图，如 图所示， 该设备包括：
BSR触发模块 71 , 用于触发 BSR; 具体指 UE首次触发 BSR, 或者是 在上一次发送 BSR之后， 又触发了 BSR。
资源确定模块 72,用于确定在当前 TTI没有已分配的 UL-SCH资源可用。
BSR确定模块 74,用于在当前 ΤΉ没有已分配的 UL-SCH资源可用时， 确定触发的 BSR中含有设定类型的 BSR。 后续资源确定模块 81 ,用于在确定触发的 BSR中含有设定类型的 BSR 时， 确定在后续 ΤΉ没有已分配的 UL-SCH资源可用。
SR触发模块 75 , 用于在后续 TTI没有已分配的 UL-SCH资源可用时， 触 发 SR。
判断模块 91 , 用于在触发 SR之后， 判断 UE在当前 ΤΉ是否有已分 配的用于首传的 UL-SCH资源可用， 并得到判断结果。
SR取消模块 92, 用于在判断模块的判断结果为是时，取消所有等待处 理的 SR;
信道确定模块 93 , 用于在判断模块的判断结果为否时， 确定 UE被分 配过可用于发送 SR的上行控制信道资源，并确定在当前 ΤΉ有可用于发送 SR的所述上行控制信道资源。
SR发送模块 94, 用于在当前 ΤΉ有可用于发送 SR的上行控制信道资源 时， 确定没有达到 SR的最大发送次数， 并在上行控制信道上发送 SR。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种触发调度请求 SR的方法， 用户设备 UE触发緩冲区状态报告 BSR, 其特征在于， 该方法包括：
确定在当前传输时间间隔 ΤΉ没有已分配的用于首传的上行共享信道 UL-SCH资源可用， 并在确定还没有获得 UL-SCH资源调度授权、 且已触 发的所述 BSR中含有设定类型的 BSR时， 触发 SR; 或者，
确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH资源可用， 并在确 定已触发的所述 BSR中含有设定类型的 BSR、且在后续 ΤΉ没有已分配用 于首传的 UL-SCH资源可用时， 触发 SR。
2、 一种上报调度请求的方法， 其特征在于， UE触发 SR, 该方法包括： 所述 UE判断在当前 ΤΉ是否有已分配的用于首传的 UL-SCH资源可 用， 如果是， 则取消所有等待处理的所述 SR; 如果否， 则确定所述 UE被 分配过可用于发送所述 SR的上行控制信道资源，并在当前 ΤΉ有可用于发 送 SR的所述上行控制信道资源、 且没有达到 SR的最大发送次数时， 在所 述上行控制信道上发送所述 SR。
3、 根据权利要求 2 所述上报调度请求的方法， 其特征在于， 在所述 UE触发 SR之前， 该方法还包括：
UE触发 BSR,确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH资源 可用， 并在确定还没有获得 UL-SCH资源调度授权且已触发的所述 BSR中 含有设定类型的 BSR时， 触发 SR; 或者，
确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH资源可用， 并在确 定已触发的所述 BSR中含有设定类型的 BSR且在后续 TTI没有已分配的用 于首传的 UL-SCH资源可用时， 触发 SR。
4、 一种触发调度请求的设备， 其特征在于， 该设备包括：
BSR触发模块， 用于触发 BSR; 资源确定模块，用于确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH 资源可用；
该设备还包括：
4受权确定模块， 在当前 TTI没有已分配的用于首传的 UL-SCH资源可 用时， 用于确定还没有获得 UL-SCH资源调度授权；
BSR确定模块， 用于在确定还没有获得 UL-SCH资源调度 4受权时， 确 定所述 BSR中含有设定类型的 BSR;
SR触发模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 触发 所述 SR;
或者， 该设备还包括：
BSR确定模块， 用于在当前 ΤΉ没有已分配的用于首传的 UL-SCH资 源可用时， 确定所述 BSR中含有设定类型的 BSR;
后续资源确定模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 确定在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源可用；
SR触发模块，用于在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源 可用时， 触发 SR。
5、 一种上报调度请求的设备， 其特征在于， 该设备包括，
判断模块， 用于判断 UE 在当前 ΤΉ 是否有已分配的用于首传的 UL-SCH资源可用， 并得到判断结果；
信道确定模块，用于在所述判断模块的判断结果为否时，确定 UE被分 配过可用于发送 SR的上行控制信道资源，并确定在当前 ΤΉ有可用于发送 SR的所述上行控制信道资源；
SR发送模块， 用于在当前 TTI有可用于发送 SR的所述上行控制信道 资源时， 确定没有达到 SR的最大发送次数， 并在所述上行控制信道上发送 所述 SR。
6、 根据权利要求 5所述上报调度请求的设备， 其特征在于， 该设备还 包括：
SR取消模块， 用于在所述判断模块的判断结果为是时， 取消所有等待 处理的所述 SR。
7、 根据权利要求 6所述上报调度请求的设备， 其特征在于， 该设备还 包括：
BSR触发模块， 用于触发 BSR;
资源确定模块，用于确定在当前 ΤΉ没有已分配的用于首传的 UL-SCH 资源可用；
该设备还包括：
4受权确定模块， 在当前 TTI没有已分配的用于首传的 UL-SCH资源可 用时， 用于确定还没有获得 UL-SCH资源调度授权；
BSR确定模块， 用于在确定还没有获得 UL-SCH资源调度 4受权时， 确 定所述 BSR中含有设定类型的 BSR;
SR触发模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 触发 所述 SR;
或者， 该设备还包括：
BSR确定模块， 用于在当前 ΤΉ没有已分配的用于首传的 UL-SCH资 源可用时， 确定所述 BSR中含有设定类型的 BSR;
后续资源确定模块， 用于在确定所述 BSR中含有设定类型的 BSR时， 确定在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源可用；
SR触发模块，用于在后续 ΤΉ没有已分配的用于首传的 UL-SCH资源 可用时， 触发 SR。
PCT/CN2009/076378 2009-01-13 2009-12-31 无线网络中触发或上报调度请求的方法和设备 WO2010081384A1 (zh)

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