Nothing Special   »   [go: up one dir, main page]

WO2017219346A1 - 调度方法和基站 - Google Patents

调度方法和基站 Download PDF

Info

Publication number
WO2017219346A1
WO2017219346A1 PCT/CN2016/087029 CN2016087029W WO2017219346A1 WO 2017219346 A1 WO2017219346 A1 WO 2017219346A1 CN 2016087029 W CN2016087029 W CN 2016087029W WO 2017219346 A1 WO2017219346 A1 WO 2017219346A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
base station
target base
sending
uplink
Prior art date
Application number
PCT/CN2016/087029
Other languages
English (en)
French (fr)
Inventor
孔祥振
李廉
秦超
王美玲
郑姣
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/087029 priority Critical patent/WO2017219346A1/zh
Priority to CN201680086371.3A priority patent/CN109196908B/zh
Priority to EP16905887.2A priority patent/EP3461178B1/en
Priority to JP2018567273A priority patent/JP6683849B2/ja
Publication of WO2017219346A1 publication Critical patent/WO2017219346A1/zh
Priority to US16/228,149 priority patent/US10743225B2/en
Priority to US16/914,892 priority patent/US11109289B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • 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
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a scheduling method and a base station.
  • a base station allocates radio resources to a terminal to implement data transmission, and the allocation process of the radio resources is also referred to as a scheduling process.
  • the scheduling may include uplink scheduling and downlink scheduling, where the uplink scheduling is used to allocate uplink resources to the terminal, so that the terminal sends data on the uplink resource, and the downlink scheduling is used to allocate downlink resources to the terminal, so that the base station uses the downlink resource to send data to the terminal.
  • the uplink grant indicates the resource allocated to the terminal; after receiving the uplink grant, the terminal sends the BSR by using the resource indicated by the uplink grant to notify the base station terminal of the amount of uplink data to be sent, so that the base station allocates the terminal according to the BSR. More uplink resources, and issue uplink authorization. In this way, the terminal can continue to transmit uplink data by using the resource indicated by the uplink grant. In addition, uplink data can also be transmitted while the BSR is being transmitted.
  • the uplink scheduling is also triggered by sending an SR or a BSR.
  • the terminal reports the SR in the target cell or carries the BSR to trigger the uplink scheduling when the handover is completed.
  • the present application provides a scheduling method, where the method is used to switch a terminal to a target cell, where the method includes: the target base station receives a random access request sent by the terminal, and sends the terminal to the terminal according to the random access request. Sending a random access response, and sending an uplink grant to the terminal after sending the random access response and receiving the handover complete command, where the target base station is the base station where the target cell is located.
  • the target base station actively sends the uplink grant, so that the UE can perform uplink scheduling before the cell handover is completed, so as to reduce the uplink transmission delay caused by the cell handover.
  • the target base station when the target base station receives the handover complete command sent by the terminal, the target base station stops sending the uplink authorization to the terminal.
  • the target base station stops sending the uplink authorization to the terminal.
  • the target base station sends an uplink authorization to the terminal, specifically: the target base station sends multiple uplink authorizations to the terminal within a preset time, and stops actively to the terminal after the preset time expires. Send an upstream license.
  • the target base station after the target base station starts to actively send the uplink grant, the target base station receives the BSR or the SR sent by the terminal, and stops sending the uplink grant to the terminal according to the BSR or the SR.
  • the target base station By stopping the active sending of the uplink grant according to the BSR or the SR, the resource waste caused by the excessive allocation of the uplink resource by the active grant is reduced, and the BSR or the SR is sent when the terminal sends the uplink data, which further avoids stopping the active sending of the uplink grant.
  • the resource allocation is too small to meet the requirements of the terminal.
  • the target base station may also send the uplink authorization to the terminal when the terminal currently has the voice service. .
  • the target base station may also send the uplink authorization to the terminal when the terminal currently has the voice service.
  • the target base station actively sends the uplink grant to the terminal.
  • the weight is specifically: after the target base station sends the random access response, the buffer status of the terminal is reported to be the size of the BSR, and the uplink resource is allocated to the terminal according to the size of the added BSR, and then the terminal is sent to the terminal to indicate the allocation. Upstream authorization for upstream resources.
  • the target base station increases the size of the BSR of the terminal, specifically: the target base station increases the size of the BSR of the terminal according to the current service attribute of the terminal, or the target base station increases according to a preset size.
  • the size of the BSR is a preset size.
  • the method of increasing the size of the BSR according to the service attribute can improve the utilization of the uplink resource, reduce the waste of resources caused by the excessive allocation of the uplink resource, and further reduce the situation that the uplink resource allocation is too small to meet the terminal requirement.
  • the target base station sends an uplink authorization to the terminal, specifically: the target base station periodically sends an uplink authorization of a preset size to the terminal.
  • the target base station after the target base station sends the random access response and receives the handover complete command, the target base station sends an uplink authorization to the terminal, specifically, after the target base station sends the random access response.
  • the uplink grant is sent to the terminal on the N TTIs, where N is a positive integer greater than or equal to 3 and less than or equal to 10.
  • the target base station starts sending multiple uplink grants to the terminal from the Nth transmission time interval TTI after the random access response is sent.
  • the present application provides a base station including a processor and a memory, the memory is for storing a program, and the processor calls a program stored in the memory to perform the method provided by the first aspect of the present application.
  • the target base station actively sends an uplink grant to the terminal after transmitting the random access response and before receiving the handover complete command.
  • the target base station can perform uplink scheduling on the UE before the cell handover is completed, so as to reduce the uplink transmission delay caused by the cell handover.
  • 1 is a schematic diagram of an existing uplink scheduling process
  • FIG. 2 is a schematic diagram of uplink scheduling in a current cell handover process
  • FIG. 3 is a timing diagram of the uplink scheduling process shown in FIG. 2;
  • FIG. 4 is a schematic diagram of uplink scheduling in a cell handover process according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a scheduling method according to an embodiment of the present invention.
  • FIG. 6 is a sequence diagram of an uplink scheduling process according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • a terminal also called a User Equipment (UE) is a device that provides voice and/or data connectivity to a user, for example, a handheld device having a wireless connection function, an in-vehicle device, and the like.
  • UE User Equipment
  • Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • MIDs mobile internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • a Radio Access Network (RAN) device is a device that accesses a terminal to a wireless network, and is also referred to as a base station, including but not limited to: an evolved Node B (eNB). , radio network controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (for example, Home Evolved NodeB, or Home Node B, HNB), BaseBand Unit (BBU). In addition, it may also include a WIreless-Fidelity (Wifi) access point (AP).
  • AP WIreless-Fidelity
  • Multiple means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 2 is a schematic diagram of uplink scheduling in a current cell handover process.
  • a terminal needs to handover from a source cell to a target cell
  • the base station where the source cell is located (hereinafter referred to as a source base station)
  • Sending a handover command (HandOver COMMAND, referred to as HO-CMD) to the terminal.
  • the terminal After receiving the handover command, the terminal sends a random access request to the base station where the target cell is located (hereinafter referred to as the target base station), and the target base station sends a random access request according to the random access request.
  • the target base station sends a random access request according to the random access request.
  • the terminal sends a Random Access Response (RAR), and then the terminal sends a Handover Complete Command (HO-CMP) to the target base station.
  • the switch completion command may carry a Buffer Status Report (BSR).
  • BSR Buffer Status Report
  • the target base station finds that the terminal carries the BSR, and then knows that the terminal has uplink data to be sent, so the target base station allocates the terminal according to the BSR.
  • Uplink resources and send an uplink grant to the terminal to indicate the uplink resource allocated for the terminal.
  • the subsequent terminal can use the uplink resource indicated by the uplink grant to send uplink data to the target base station.
  • the terminal can trigger the uplink scheduling only after the handover is completed. Because the cell handover takes a certain time, it will bring a certain delay to the uplink data transmission of the terminal and affect the user experience. Especially for delay sensitive services, such as voice services, this delay is even unacceptable.
  • FIG. 3 is a timing diagram of the uplink scheduling process shown in FIG. 2
  • FIG. 3 is an example of a Long Term Evolution (LTE) system.
  • the first row represents time
  • the unit is Transmission Time Interval (TTI)
  • the second row represents the behavior of the target base station
  • the third row represents the behavior of the terminal.
  • TTI0 Transmission Time Interval
  • the target base station sends a random access response to the terminal at TTI0
  • the terminal sends a handover complete command to the target base station at TTI6, and the target base station receives the handover complete command at TTI9, and starts transmitting the uplink grant from TTI10.
  • the base station may send the uplink grant to the terminal multiple times, for example, the uplink grant is sent in the TTI10-TTI13.
  • the time of the command is not fixed. It may be TTI8, TTI9 or TTI10.
  • the time when the target base station receives the handover complete command is TTI8
  • the time when the target base station starts to send the uplink grant to the terminal may be TTI9.
  • the target base station may start sending an uplink grant to the terminal at the TTI11.
  • the target base station needs at least 8-10 TTIs from the time of sending the random access response to the start of the uplink grant, and the delay-sensitive service, such as voice service, seriously affects the user experience.
  • the embodiment of the present invention provides a scheduling method.
  • the target base station actively sends an uplink authorization to the terminal after receiving the random access response and receiving the handover complete command.
  • the uplink grant is sent, so that the target base station can perform uplink scheduling on the UE before the cell handover is completed, which reduces the delay caused by the cell handover.
  • FIG. 4 is a schematic diagram of uplink scheduling in a cell handover process according to an embodiment of the present invention. As shown in FIG. 4, it differs from FIG. 2 in that the target base station actively sends an uplink grant to the terminal after transmitting the random access response and before receiving the handover complete command.
  • the target base station may continuously send multiple uplink grants, or may send only one uplink grant.
  • FIG. 5 is a flowchart of a scheduling method according to an embodiment of the present invention. The method is used to switch a terminal to a target cell. As shown in FIG. 5, the method in this embodiment may include the following steps:
  • Step 101 The target base station where the target cell is located receives the random access request sent by the terminal.
  • Step 102 The target base station sends a random access response to the terminal according to the random access request.
  • Step 103 After transmitting the random access response and receiving the handover complete command, the target base station actively sends an uplink grant to the terminal.
  • step 103 the target base station actively sends an uplink grant to the terminal after sending the random access response and receiving the handover complete command.
  • the active transmission here means that the target base station sends an uplink grant to the terminal without receiving the SR or BSR sent by the terminal.
  • the existing uplink scheduling process is: after the cell handover is completed, when the terminal has uplink data transmission, the terminal carries the BSR in the handover completion command sent to the target base station, and after receiving the handover completion command, the target base station allocates the terminal according to the BSR. Resources, issue uplink authorization.
  • the terminal sends the SR to the target base station.
  • the SR only tells the target base station terminal that there is data to be sent, and does not tell the target base station terminal how much data to send, the target base station.
  • the terminal can allocate only the uplink resource for transmitting the BSR, and the terminal sends the BSR on the authorized uplink resource, where the BSR carries the data size to be sent by the terminal, and the target base station according to the data.
  • the BSR authorizes the terminal.
  • the terminal may carry the BSR in the uplink subframe if the data is still to be sent, and the target base station continues to authorize the terminal according to the BSR.
  • the target base station may also allocate a preset size resource to the terminal after receiving the SR.
  • the terminal uses the resource to send the uplink data in addition to the BSR.
  • the terminal cannot send the SR or the BSR to the target base station because the terminal has not switched to the target base station.
  • the terminal may have data to be transmitted.
  • the target base station does not receive the data.
  • the SR or BSR also sends an uplink grant to the terminal.
  • the target base station may send the uplink grant at any time after the random access response is sent and before the handover complete command is received.
  • the TTI is used as the basic unit of time for radio resource management (for example, scheduling), and 1 TTI is equal to 1 millisecond (ms), that is, the size of one subframe.
  • ms millisecond
  • the target base station may actively send an uplink grant to the terminal starting from the Nth TTI after the random access response is sent, where N is a positive integer greater than or equal to 3 and less than or equal to 10.
  • the maximum value of N is 8.
  • the maximum value of N is 9.
  • the target base station receives the handover completion command.
  • the maximum value of N is 10.
  • the number of uplink grants actively sent by the target base station is not limited, and the target base station may send an uplink grant from the Nth TTI after sending the random access response.
  • the uplink grants may be sent continuously or discontinuously, that is, the target base station may continuously send uplink grants from the Nth TTI after the random access response is sent, or may send random access responses.
  • the subsequent Nth TTI starts to transmit the uplink grant discontinuously.
  • the target base station sends an uplink grant every time one TTI is separated, or sends an uplink grant every two TTIs.
  • the value of N may be preset or may be determined in real time by the target base station according to a preset rule.
  • the values of N may be the same or different.
  • the value of N can be determined according to the delay sensitivity of the service.
  • the value of N can be smaller than that of delay-insensitive services.
  • the value of N is 3.
  • the value of N can be 6.
  • FIG. 6 is a timing diagram of the uplink scheduling process according to an embodiment of the present invention, as shown in FIG. 6. As shown, it is assumed that the target base station transmits a random access response in TTI0, the target base station starts to send an uplink grant from TTI3, and the terminal sends a handover complete command to the target base station in TTI6, and the target base station receives the handover complete command at TTI9, according to the above embodiment.
  • the mechanism is that the target base station sends an uplink grant from the TTI3, and the terminal starts the Physical Uplink Shared Channel (PUSCH) transmission at intervals of four TTIs, that is, the terminal starts PUSCH transmission from the TTI7.
  • PUSCH Physical Uplink Shared Channel
  • FIG. 2 and FIG. 6 it can be seen that the target base station starts to send an uplink grant in the TTI3 in the method of the embodiment.
  • the target base station can start to send the uplink grant at the TTI10, and the delay is changed from 9 TTIs. With 3 TTIs, the delay is reduced by 6 TTIs.
  • the target base station may send multiple uplink grants to the terminal.
  • the target base station periodically sends an uplink grant with a preset size to the terminal.
  • the target base station actively increases the size of the BSR of the terminal, and triggers the uplink grant according to the size of the added BSR.
  • the base station and the terminal maintain the size of the BSR, which is a Buffer Size BS value.
  • the terminal reports an index (Index) to the base station according to the size of the BSR.
  • the index is used to indicate the size of the BSR, and the base station receives the index.
  • the size of the BSR that is maintained by the user is updated, and the uplink resource is allocated to the terminal according to the size of the updated BSR, and the authorization is issued.
  • the target base station increases the size of the BSR, triggers the allocation of the uplink resource, and delivers the authorization.
  • the increase may be performed automatically or periodically according to a preset size, or may be increased according to the service attribute of the terminal. For example, when the terminal The pre-service is a voice service, and the voice packet size can be estimated, and the size of the BSR is actively added according to the language packet size.
  • the method of increasing the size of the BSR according to the service attribute can improve the utilization of the uplink resource, reduce the waste of resources caused by the excessive allocation of the uplink resource, and further reduce the situation that the uplink resource allocation is too small to meet the terminal requirement.
  • the target base station determines the number of uplink grants to be sent according to the current service attributes of the terminal.
  • the service attribute is, for example, a delay attribute.
  • the target base station may choose to ensure the delay at the cost of wasting some uplink resources, so that the value of M is larger, correspondingly The number of uplink grants L allocated by the target base station is also large.
  • the value of M is smaller, and the number of uplink grants L allocated by the corresponding target base station is also small.
  • the service attribute may also be a data type of the service.
  • the service data type includes text, picture, video, and audio.
  • the target base station actively sends an uplink grant before receiving the handover complete command, and after receiving the handover complete command, performs scheduling according to the existing uplink scheduling manner.
  • the target base station can stop sending the uplink authorization actively in the following situations:
  • the target base station receives the handover complete command sent by the terminal, and stops sending the uplink grant to the terminal actively according to the handover complete command.
  • the target base station sends multiple uplink grants to the terminal within a preset time, and stops sending the uplink grant to the terminal actively after the preset time expires.
  • the preset time may be a plurality of TTIs, and the target base station actively sends an uplink grant to the terminal in the multiple TTIs, and after the multiple TTIs are ended, the target base station stops actively sending the uplink grant to the terminal.
  • the target base station receives the BSR or SR sent by the terminal, and stops sending the uplink grant to the terminal according to the BSR or the SR.
  • the terminal sends an SR to the target base station, indicating that the terminal has switched to the target cell and has data transmission. In this case, the terminal can perform scheduling according to the existing uplink scheduling mode. Therefore, the target base station stops actively sending the uplink authorization to the terminal.
  • the terminal carries the BSR in the handover completion command, and the target base station stops sending the uplink authorization to the terminal according to the BSR carried in the handover completion command.
  • the terminal is authorized.
  • the BSR is sent on the uplink resource, and the target base station stops sending the uplink grant to the terminal according to the BSR.
  • the method in this embodiment can be applied to various services, such as a voice service, a video service, and a text service.
  • the voice service is a delay-sensitive service, and the delay caused by the cell handover may cause the voice packet of the terminal to be blocked. A certain packet delay is generated, which causes a short deterioration in the quality of the call and affects the feeling of the voice user.
  • the target base station may further determine whether the terminal currently has a voice service. When the terminal currently has a voice service, the target base station sends the random access response to the terminal after receiving the handover completion command. Upstream authorization. When the terminal does not currently have a voice service, the target base station starts scheduling the terminal after the terminal switches to the target cell.
  • the voice service in this embodiment is a general term for a type of service, and the service has the same quality of service (QoS) requirement, and the QoS requirement can pass the QoS class identification code (QoS Class). Identifier, referred to as QCI).
  • QCI QoS class identification code
  • the target base station may determine, according to the QCI, whether the terminal currently has voice service transmission.
  • QCI1, QCI2, and QCI5 are all voice-related QCIs.
  • the QCI1 carries the voice service
  • the QCI2 carries the video service
  • the QCI5 carries the Session Initiation Protocol (SIP) signaling of the voice service, for example, the SIP signaling used to establish and release the voice service.
  • SIP Session Initiation Protocol
  • the voice service When the voice service is established, it is completed by sending the SIP signaling to the core network device in the QCI5, triggering the core network device to establish the QCI1 bearer, or completing the QCI1 and QCI2 bearers for the videophone.
  • the corresponding SIP signaling is transmitted on the QCI5 to trigger the CN device to release the QCI1 to complete, or, for the videophone service, the CN device is triggered to release QCI1 and QCI2 to complete, and the call is considered to be ended. Therefore, the target base station determines whether the terminal is performing voice service, and can determine the start and end by using the SIP signaling of the QCI5; or can judge by the bearer of the QCI1.
  • the target base station where the target cell is located receives the random access request sent by the terminal, sends a random access response to the terminal according to the random access request, and receives the random access response after receiving the random access response.
  • the uplink authorization is sent to the terminal.
  • the target base station can perform uplink scheduling on the UE before the cell handover is completed, so as to reduce the uplink transmission delay caused by the cell handover.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present disclosure, where the base station is a terminal cut As shown in FIG. 7, the target base station where the target cell is switched, the base station includes: a receiving module 11, a sending module 12, and a scheduling module 13.
  • the receiving module 11 is configured to receive a random access request sent by the terminal;
  • the sending module 12 is configured to send a random access response to the terminal according to the random access request.
  • the scheduling module 13 is configured to send an uplink authorization to the terminal by using the sending module 12 after the sending module 12 sends the random access response and before the receiving module 11 receives the handover complete command.
  • the scheduling module 13 is further configured to: when the receiving module 11 receives the handover complete command sent by the terminal, control the sending module 12 to stop sending an uplink authorization to the terminal.
  • the scheduling module 13 is specifically configured to: send, by using the sending module 12, multiple uplink authorizations to the terminal within a preset time, and control the sending module 12 to stop after the preset time expires Actively sending an uplink grant to the terminal.
  • the receiving module 11 is further configured to receive a BSR or an SR sent by the terminal.
  • the scheduling module 13 is further configured to: according to the BSR or the SR, control, that the sending module 12 stops actively sending an uplink grant to the terminal.
  • the base station further includes a determining module (not shown in FIG. 7), where the determining module is configured to determine whether the terminal currently has a voice service.
  • the scheduling module 13 is specifically configured to: when the terminal When the voice service is currently available, after the sending module 12 sends the random access response and before the receiving module 11 receives the handover complete command, the sending module 12 actively sends an uplink grant to the terminal.
  • the scheduling module 13 sends the uplink authorization to the terminal by using the following manner:
  • the scheduling module increases the size of the BSR of the terminal according to the current service attribute of the terminal, or increases the size of the BSR according to a preset size.
  • the period actively sends an uplink authorization of a preset size to the terminal.
  • the uplink authorization is sent to the terminal by using the sending module 12, and the N is greater than or equal to 3, and is less than or equal to the Nth TTI after the sending, by the sending module 12, the Nth TTI.
  • the scheduling module sends, by using the sending module 12, multiple uplink authorizations to the terminal from the Nth TTI.
  • the base station shown in FIG. 7 can be used to perform the method provided by the foregoing method embodiments, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • each module of the above base station is only a division of a logical function. In actual implementation, it may be integrated into one physical entity in whole or in part, or may be physically separated. And these modules can all be implemented by software in the form of processing component calls; or all of them can be implemented in hardware form; some modules can be realized by processing component calling software, and some modules are realized by hardware.
  • the scheduling module may be a separately set processing component, or may be integrated in a certain chip of the base station, or may be stored in the memory of the base station in the form of program code, and is called and executed by a processing component of the base station. The function of the above scheduling module.
  • the implementation of other modules is similar.
  • all or part of these modules can be integrated or implemented independently.
  • the processing elements described herein can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital) Singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA).
  • ASICs Application Specific Integrated Circuits
  • DSP digital Singnal processor
  • FPGA Field Programmable Gate Array
  • the processing component can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke program code.
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • the base station of this embodiment includes: an antenna 110, a radio frequency device 120, and a baseband device 130.
  • the antenna 110 is connected to the radio frequency device 120.
  • the radio frequency device 120 receives the information transmitted by the terminal through the antenna 110, and transmits the information sent by the terminal to the baseband device 130 for processing.
  • the baseband device 130 processes the information of the terminal and sends it to the radio frequency device 120.
  • the radio frequency device 120 processes the information of the terminal and sends it to the terminal through the antenna 110.
  • the method provided by the above embodiments can be implemented in a baseband device 130 that includes a processing element 131 and a storage element 132.
  • the baseband device 130 may, for example, comprise at least one baseband board having a plurality of chips disposed thereon, as shown in FIG. 8, one of which is, for example, a processing component 131, coupled to the storage component 132 to invoke a program in the storage component 132
  • the operations shown in the above method embodiments are performed.
  • the baseband device 130 can also include an interface 133 for interacting with the radio frequency device 120, such as a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the processing element herein may be a processor or a collective name of a plurality of processing elements.
  • the processing element may be a CPU, an ASIC, or one or more integrated circuits configured to implement the above method.
  • the processing element may be a CPU, an ASIC, or one or more integrated circuits configured to implement the above method.
  • the storage element can be a memory or a collective name for a plurality of storage elements.

Landscapes

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

Abstract

本发明实施例提供一种调度方法和基站，在小区切换过程中，目标小区所在的目标基站接收终端发送的随机接入请求，根据随机接入请求向终端发送随机接入响应，并且在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权。通过主动发送上行授权，使得目标基站在小区切换完成前，就可以对UE进行上行调度，以降低小区切换所引起的上行传输时延。

Description

调度方法和基站 技术领域
本发明实施例涉及通信技术，尤其涉及一种调度方法和基站。
背景技术
在无线通信系统中，基站为终端分配无线资源以实现数据的传输，该无线资源的分配过程又称为调度过程。调度可以包括上行调度和下行调度，其中上行调度用于为终端分配上行资源，以便终端在该上行资源上发送数据，下行调度用于为终端分配下行资源，以便基站利用该下行资源给终端发送数据。
上行调度可以由调度请求(scheduling request，SR)或缓冲区状态报告(Buffer Status Report，BSR)触发，也就是说，当终端有上行数据待发送时，可以通过上报SR或BSR触发基站为终端分配上行资源。例如，请参考图1，其为一种现有的上行调度过程的示意图。如图1所示，在行调度过程中，当终端有上行数据待发送时，向基站发送SR，告知基站终端有上行数据待发送；基站收到SR之后，会向终端下发上行授权(UL Grant)，该上行授权指示了为终端分配的资源；终端收到上行授权之后，利用上行授权指示的资源发送BSR，以通知基站终端待发送的上行数据量，以便基站根据BSR来为终端分配更多的上行资源，并下发上行授权。如此，终端便可以利用在上行授权指示的资源上继续传输上行数据。另外，在发送BSR的同时也可以发送上行数据。
当终端的服务小区发生变化(例如切换)或者因为某些原因重新接入服务小区时，也通过发送SR或BSR来触发上行调度。例如终端在从源小区切换到目标小区时，在目标小区上报SR或在切换完成时携带BSR来触发上行调度。
可见，现有的技术中，终端只有在切换完成后才能触发上行调度。由于小区切换需要较长的时间，会导致终端的上行数据传输时延较大，影响用户体验，尤其是对时延要求较高的业务(例如语音业务)，这种时延甚至是不 可接受的。
发明内容
本发明实施例提供一种调度方法和基站，以期降低小区切换所引起的上行传输时延。
第一方面，本申请提供一种调度方法，所述方法用于将终端切换到目标小区的过程中，所述方法包括：目标基站接收终端发送的随机接入请求，根据随机接入请求向终端发送随机接入响应，并在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权，其中，目标基站为目标小区所在的基站。目标基站通过主动发送上行授权，使得在小区切换完成前，就可以对UE进行上行调度，以降低小区切换所引起的上行传输时延。
在第一方面的第一种实现方式中，当目标基站接收到终端发送的切换完成命令时，停止主动向终端发送上行授权。通过根据切换完成命令停止主动发送上行授权，减少由于主动授权分配过多的上行资源导致的资源浪费，且可以保证在切换成功后，按照现有的调度方式为终端分配上行资源。
在第一方面的第二种实现方式中，目标基站主动向终端发送上行授权，具体为：目标基站在预设时间内向终端发送多个上行授权，且在预设时间到期后停止主动向终端发送上行授权。
在第一方面的第三种实现方式中，目标基站在开始主动发送上行授权后，接收终端发送的BSR或SR，根据BSR或SR停止主动向终端发送上行授权。通过根据BSR或SR停止主动发送上行授权，减少由于主动授权分配过多的上行资源导致的资源浪费，且由于BSR或SR是终端有上行数据发送时发送的，进一步避免了停止主动发送上行授权导致资源分配过少，无法满足终端要求的情况。
在第一方面的第四种实现方式中，目标基站主动向终端发送上行授权之前，还可以判断终端当前是否有语音业务，当终端当前有语音业务时，目标基站才会主动向终端发送上行授权。通过判断当前是否有语音业务，可以减少对一些时延要求不高的业务采用主动授权造成的上行资源浪费。
在第一方面的第五种实现方式中，目标基站主动向终端发送上行授 权，具体为：目标基站在发送随机接入响应之后，增加终端的缓冲区状态报告BSR的大小，根据增加后的BSR的大小，为终端分配上行资源，然后主动向终端发送用于指示该分配的上行资源的上行授权。
在第五种实现方式的基础上，可选的，目标基站增加终端的BSR的大小，具体为：目标基站根据终端当前的业务属性，增加终端的BSR的大小，或者目标基站按预设大小增加BSR的大小。根据业务属性增加BSR的大小的方法可以提高上行资源的利用率，减少上行资源分配过多所带来的资源浪费，且可以进一步减少因为上行资源分配过少，无法满足终端要求的情况。
在第一方面的第六种实现方式中，目标基站主动向终端发送上行授权，具体为：目标基站周期的主动向终端发送预设大小的上行授权。
在第一方面的第六种实现方式中，目标基站在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权，具体为：目标基站从发送随机接入响应之后的第N个TTI上开始向终端发送上行授权，N为大于或等于3，且小于或等于10的正整数。
在第六种实现方式的基础上，可选的，目标基站从发送随机接入响应之后的第N个传输时间间隔TTI上开始向终端发送多个上行授权。
第二方面，本申请提供一种基站，所述基站包括用于执行上述第一方面以及第一方面的各种实现方式所提供的方法的功能模块或手段。
第三方面，本申请提供一种基站，所述基站包括处理器和存储器，存储器用于存储程序，处理器调用存储器存储的程序，以执行本申请第一方面种提供的方法。
在以上各个方面中，目标基站在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权。通过主动发送上行授权，使得目标基站在小区切换完成前，就可以对UE进行上行调度，以降低小区切换所引起的上行传输时延。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见 地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为一种现有的上行调度过程的示意图；
图2为一种现有的小区切换过程中上行调度的示意图；
图3为图2所示上行调度过程的时序图；
图4为本发明实施例提供的一种小区切换过程中上行调度的示意图；
图5为本发明实施例提供的一种调度方法的流程图；
图6为本发明一实施例的上行调度过程的时序图；
图7为本发明实施例提供的一种基站的结构示意图；
图8为本发明实施例提供的又一种基站的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
(1)终端，又称之为用户设备(User Equipment，UE)，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。常见的终端例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，例如智能手表、智能手环、计步器等。
(2)无线接入网(Radio Access Network，RAN)设备是一种将终端接入到无线网络的设备，又称之为基站，包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station,BTS)、家庭基站(例如，Home evolved  NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)。此外，还可以包括无线保真(WIreless-Fidelity，Wifi)接入点(Access Point，AP)等。
(3)“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
请参考图2，其为一种现有的小区切换过程中上行调度的示意图，如图2所示，当终端需要从源小区切换到目标小区时，源小区所在的基站(以下称为源基站)向终端发送切换命令(HandOver COMMAND，简称HO-CMD)，终端收到切换命令后，向目标小区所在的基站(以下称为目标基站)发送随机接入请求，目标基站根据随机接入请求向终端发送随机接入响应(Random Access Response，RAR)，而后终端向目标基站发送切换完成命令(HandOver Complete Command，HO-CMP)。该切换完成命令中可以携带缓冲区状态报告(Buffer Status Report，BSR)，目标基站接收到切换完成命令后，发现其中携带BSR，则知道终端有上行数据待发送，因此目标基站根据BSR为终端分配上行资源，并向终端发送上行授权，来指示为终端分配的上行资源。后续终端就可以利用上行授权所指示的上行资源来向目标基站发送上行数据。
可见，终端只有在切换完成后才能触发上行调度，由于小区切换需要一定的时间，会为终端的上行数据的传输带来一定的时延，影响用户体验。尤其对于时延敏感的业务，例如语音业务，这种时延甚至是不可接受的。
请参考图3，其为图2所示上行调度过程的时序图，图3是以长期演进(Long Term Evolution，LTE)系统为例。如图3所示，第一行代表时间，单位为传输时间间隔(Transmission Time Interval，TTI)，第二行代表目标基站的行为，第三行代表终端的行为。假设目标基站在TTI0向终端发送随机接入响应，终端在TTI6向目标基站发送切换完成命令，目标基站在TTI9接收到该切换完成命令，从TTI10开始发送上行授权。如果终端待发送的数据比较多，基站可能会多次向终端发送上行授权，例如在TTI10-TTI13均发送上行授权。需要说明的是，目标基站收到该切换完成 命令的时间并不是固定，可能为TTI8、TTI9或TTI10，相应的，当目标基站收到该切换完成命令的时间为TTI8时，目标基站开始向终端发送上行授权的时间可以为TTI9，当目标基站收到该切换完成命令的时间为TTI10时，目标基站可以在TTI11开始向终端发送上行授权。通过上述的时序关系可知，目标基站从发送随机接入响应到开始发送上行授权至少需要8-10个TTI的时间，对于时延敏感的业务，例如语音业务，严重影响用户体验。
为了减少上行数据传输的时延，本发明实施例提供一种调度方法，在小区切换过程中，目标基站在发送随机接入响应之后且接收到切换完成命令之前主动向终端发送上行授权，通过主动发送上行授权，使得目标基站在小区切换完成前，就可以对UE进行上行调度，降低了小区切换带来的时延。以下通过具体的实施例对本发明的方法进行详细描述。
另外，需要说明的是，当以上切换为小区间切换时，源小区和目标小区为不同的小区，且源小区和目标小区可以位于同一个基站，也可以位于不同的基站，即源基站和目标基站可以为同一个基站，也可以为不同的基站。当以上切换为小区内切换时，源小区和目标小区可以为同一个小区，则目标基站即为源基站。
请参考图4，其为本发明实施例提供的一种小区切换过程中上行调度的示意图。如图4所示，其与图2的区别在于，目标基站在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权。且目标基站可以连续发送多次上行授权，也可以仅发送一次上行授权。
图5为本发明实施例提供的一种调度方法的流程图，该方法用于将终端切换到目标小区的过程中，如图5所示，本实施例的方法可以包括以下步骤：
步骤101、目标小区所在的目标基站接收终端发送的随机接入请求。
步骤102、目标基站根据随机接入请求向终端发送随机接入响应。
步骤103、目标基站在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权。
步骤103中，目标基站在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权。
这里主动发送是指目标基站在没有接收到终端发送的SR或BSR的情况下，向终端发送上行授权。现有上行调度流程是：在完成小区切换后，当终端有上行数据发送时，终端在发送给目标基站的切换完成命令中携带BSR，目标基站在接收到切换完成命令后，根据BSR给终端分配资源，下发上行授权。或者，在目标基站接收到终端发送的切换完成命令后，终端发送SR给目标基站，通常，SR只是告诉目标基站终端有数据要发送，并不会告诉目标基站终端有多少数据要发送，目标基站根据SR为终端分配资源，下发上行授权。此时由于目标基站不知道终端需要多少上行资源，可以只为终端分配用于发送BSR的上行资源，终端在授权的上行资源上发送BSR，BSR中会携带终端要发送的数据大小，目标基站根据BSR给终端授权。终端在得到上行授权后，后续如果还有数据要发送，也可以在上行子帧中携带BSR，目标基站根据BSR给终端继续授权。当然，目标基站也可以在收到SR之后，也可以为终端分配预设大小的资源，终端除了利用该资源发送BSR以外，剩余的资源用于发送上行数据。本实施例的方案中，由于终端还没有切换到目标基站，终端无法向目标基站发送SR或BSR，此时终端可能有数据要传输，为了保证终端的数据能够及时传输，目标基站即使没有收到SR或BSR，也会向终端发送上行授权。
目标基站可以在发送随机接入响应之后且接收到切换完成命令之前的任何时间上发送上行授权，在现有的通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、LTE系统等网络系统中，一般将TTI作为无线资源管理(例如调度)所管辖时间的基本单位，1TTI等于1毫秒(ms)，即一个子帧的大小。当然随着技术的演进，TTI的大小可以为其它值，例如0.5ms，其并非用以限制本发明。目标基站可以从发送随机接入响应之后的第N个TTI开始主动向终端发送上行授权，N为大于或等于3，且小于或等于10的正整数。当目标基站接收切换完成命令的时间为TTI8时，N的最大取值为8，当目标基站接收切换完成命令的时间为TTI9时，N的最大取值为9，当目标基站接收切换完成命令的时间为TTI10时，N的最大取值为10。
本实施例中，并不对目标基站主动发送的上行授权的个数进行限制，目标基站可以从发送随机接入响应之后的第N个TTI开始发送一个上行授 权，也可以发送多个上行授权。当发送多个上行授权时，这些上行授权可以连续发送也可以不连续发送，即目标基站可以从发送随机接入响应之后的第N个TTI开始连续发送上行授权，也可以从发送随机接入响应之后的第N个TTI开始非连续的发送上行授权，例如，目标基站每间隔一个TTI发送一个上行授权，或者，每间隔两个TTI发送一个上行授权。N的取值可以预先设定好，也可以由目标基站根据预设的规则实时确定。针对终端的不同业务，N的取值可以相同，也可以不同。可以根据业务的时延敏感性确定N的取值，对于时延敏感的业务，N的取值可以小于时延不敏感的业务。例如，对于时延敏感的业务，N的取值为3，对于时延不敏感的业务，N的取值可以为6。
当N的取值为3时，目标基站在发送随机接入响应后的第3个TTI开始主动向终端发送上行授权，图6为本发明一实施例的上行调度过程的时序图，如图6所示，假设目标基站在TTI0发送随机接入响应，目标基站从TTI3开始发送上行授权，终端在TTI6向目标基站发送切换完成命令，目标基站在TTI9接收到该切换完成命令，按照以上实施例的机制，目标基站从TTI3开始发送上行授权，终端间隔4个TTI开始物理上行共享信道(Physical Uplink Shared Channel，PUSCH)传输，即终端从TTI7开始PUSCH传输。对比图2和图6，可知本实施例的方法中，目标基站在TTI3开始发送上行授权，相比于现有技术中目标基站最早能在TTI10开始发送上行授权，时延从9个TTI变为了3个TTI，时延降低了6个TTI。
目标基站主动向终端发送上行授权可以有多种实现方式。例如目标基站周期性的主动向终端发送预设大小的上行授权；再如，目标基站主动增加终端的BSR的大小，并根据增加的BSR的大小来触发上行授权。基站和终端中维护有BSR的大小，为缓存大小值(Buffer Size BS value)，终端会根据自己的BSR的大小向基站上报索引(Index)，该索引用于指示BSR的大小，基站接收到索引之后，更新自己的维护的BSR的大小，据此更新后的BSR的大小，为终端分配上行资源，并下发授权。本申请实施例中，目标基站自行增加BSR的大小，触发为终端分配上行资源，并下发授权。在增加BSR的大小的过程中，可以自动周期或一次性按照预设大小进行增加，也可以根据终端的业务属性进行增加。例如，终端的当 前业务为语音业务，可以估计语音包大小，根据语言包大小主动加BSR的大小。
根据业务属性增加BSR的大小的方法可以提高上行资源的利用率，减少上行资源分配过多所带来的资源浪费，且可以进一步减少因为上行资源分配过少，无法满足终端要求的情况。
上述方法中，目标基站根据终端当前的业务属性，确定发送的上行授权的个数。该业务属性例如是时延属性，对于时延敏感的业务，为了最大可能的降低时延，目标基站可以选择以浪费一些上行资源为代价来保证时延，因此M的取值大一些，相应的目标基站分配的上行授权个数L取值也大。对于时延不敏感的业务，为了避免上行资源的浪费，M的取值会小一些，相应的目标基站分配的上行授权个数L取值也小。该业务属性还可以是业务的数据类型，业务数据类型包括文本、图片、视频和音频等类型，对于视频和音频业务，为了提高用户体验，M和L的取值大一些。对于文本和图片，为了避免上行资源的浪费，M和L的取值小一些。上述只是举例说明，该业务属性不限于时延属性和数据类型，还可以是其他。
本实施例中，目标基站在接收到切换完成命令之前主动发送上行授权，在接收到切换完成命令后，还是按照现有的上行调度方式进行调度。目标基站可以在以下几种情况下，停止主动发送上行授权：
(1)目标基站接收终端发送的切换完成命令，根据切换完成命令停止主动向终端发送上行授权。
(2)目标基站在预设时间内向终端发送多个上行授权，在该预设时间到期后停止主动向终端发送上行授权。该预设时间可以为多个TTI，在该多个TTI内目标基站主动向终端发送上行授权，在该多个TTI结束后，目标基站停止主动向终端发送上行授权。
(3)目标基站接收终端发送的BSR或SR，根据该BSR或SR停止主动向终端发送上行授权。终端向目标基站发送SR，说明终端已经切换到目标小区，并且有数据发送，此时可以按照现有的上行调度方式进行调度，因此目标基站停止主动向终端发送上行授权。或者，终端在切换完成命令中携带BSR，目标基站根据该切换完成命令中携带的BSR停止主动向终端发送上行授权。或者，目标基站主动发送上行授权后，终端在授权 的上行资源上发送BSR，目标基站根据BSR停止主动向终端发送上行授权。
本实施例的方法可以应用在各种业务中，例如语音业务、视频业务和文本业务等，其中，语音业务为时延敏感业务，小区切换带来的时延会导致终端上行的语音包阻塞，产生一定的包时延，造成通话质量的短暂恶化，影响语音用户的感受。可选的，在步103之前，目标基站还可以进一步判断终端当前是否有语音业务，当终端当前有语音业务时，目标基站在发送随机接入响应之后且接收到切换完成命令之前主动向终端发送上行授权。当终端当前没有语音业务时，目标基站在终端切换到目标小区后，开始对终端进行调度。
需要说明书的是，本实施例中的语音业务是对一类业务的统称，这类业务有相同的服务质量(quality of service，简称QoS)需求，该QoS需求可以通过QoS分类识别码(QoS Class Identifier，简称QCI)来体现。目标基站可以根据QCI判断终端当前是否有语音业务传输。例如，QCI1、QCI2和QCI5都是语音相关的QCI。其中，QCI1承载语音业务，QCI2承载视频业务，QCI5承载语音业务的会话初始化协议(Session Initiation Protocol，简称SIP)信令，例如，建立和释放语音业务所用的SIP信令。在建立语音业务时，通过在QCI5发送SIP信令给核心网设备，触发核心网设备建立QCI1承载来完成，或者，对于可视电话需要建立QCI1和QCI2承载来完成。在结束语音业务时，在QCI5上传输相应的SIP信令，以触发CN设备释放QCI1来完成，或者，对于可视电话业务，触发CN设备释放QCI1和QCI2来完成，认为通话结束。因此，目标基站判断终端是否在进行语音业务，可以通过QCI5的SIP信令来判断开始和结束；也可以通过QCI1的承载来判断。
本实施例中，在小区切换过程中，目标小区所在的目标基站接收终端发送的随机接入请求，根据随机接入请求向终端发送随机接入响应，并且在发送随机接入响应之后且接收到切换完成命令之前，主动向终端发送上行授权。通过主动发送上行授权，使得目标基站在小区切换完成前，就可以对UE进行上行调度，以降低小区切换所引起的上行传输时延。
图7为本发明实施例提供的一种基站的结构示意图，所述基站为终端切 换到的目标小区所在的目标基站，如图7所示，所述基站包括：接收模块11、发送模块12和调度模块13。
接收模块11用于接收所述终端发送的随机接入请求；
发送模块12用于根据所述随机接入请求向所述终端发送随机接入响应；
调度模块13用于在所述发送模块12发送所述随机接入响应之后且在所述接收模块11接收到切换完成命令之前，通过所述发送模块12主动向所述终端发送上行授权。
可选的，所述调度模块13还用于：当所述接收模块11接收到所述终端发送的切换完成命令时，控制所述发送模块12停止主动向所述终端发送上行授权。
可选的，所述调度模块13具体用于：通过所述发送模块12在预设时间内向所述终端发送多个上行授权，且控制所述发送模块12在所述预设时间到期后停止主动向所述终端发送上行授权。
可选的，所述接收模块11还用于接收所述终端发送的BSR或SR。相应的，所述调度模块13还用于：根据所述BSR或所述SR控制所述发送模块12停止主动向所述终端发送上行授权。
可选的，所述基站还包括判断模块(图7中未示出)，判断模块用于判断所述终端当前是否有语音业务.相应的，所述调度模块13具体用于：当所述终端当前有语音业务时，在所述发送模块12发送所述随机接入响应之后且在所述接收模块11接收到切换完成命令之前，通过所述发送模块12主动向所述终端发送上行授权。
可选的，所述调度模块13具体通过如下方式主动向所述终端发送所述上行授权：
在所述发送模块12发送所述随机接入响应之后，增加所述终端的BSR的大小，根据增加后的BSR的大小，为所述终端分配上行资源，然后通过所述发送模块12主动向所述终端发送用于指示所述上行资源的上行授权。可选的，所述调度模块根据所述终端当前的业务属性，增加所述终端的BSR的大小，或者，按预设大小增加所述BSR的大小。
或者，周期的主动向所述终端发送预设大小的上行授权。
或者，从所述发送模块12发送所述随机接入响应之后的第N个TTI上开始通过所述发送模块12向所述终端发送上行授权，所述N为大于或等于3，且小于或等于10的正整数。可选的，所述调度模块从所述第N个TTI上开始通过所述发送模块12向所述终端发送多个上行授权。
图7所示的基站可用于执行上述方法实施例提供的方法，具体实现方式和技术效果类似，这里不再赘述。
需要说明的是，应理解以上基站的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形式实现，部分模块通过硬件的形式实现。例如，调度模块可以为单独设立的处理元件，也可以集成在基站的某一个芯片中实现，此外，也可以以程序代码的形式存储于基站的存储器中，由基站的某一个处理元件调用并执行以上调度模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
图8为本发明实施例提供的又一种基站的结构示意图，如图8所示，本实施例的基站包括：天线110、射频装置120、基带装置130。天线110与射频装置120连接。在上行方向上，射频装置120通过天线110接收终端发送的信息，将终端发送的信息发送给基带装置130进行处理。在下行 方向上，基带装置130对终端的信息进行处理，并发送给射频装置120，射频装置120对终端的信息进行处理后经过天线110发送给终端。
以上实施例提供的方法可以在基带装置130中实现，该基带装置130包括处理元件131和存储元件132。基带装置130例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图8所示，其中一个芯片例如为处理元件131，与存储元件132连接，以调用存储元件132中的程序，执行以上方法实施例中所示的操作。该基带装置130还可以包括接口133，用于与射频装置120交互信息，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
这里的处理元件可以是一个处理器，也可以是多个处理元件的统称，例如，该处理元件可以是CPU，也可以是ASIC，或者是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个微处理器DSP，或，一个或者多个现场可编程门阵列FPGA等。存储元件可以是一个存储器，也可以是多个存储元件的统称。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (22)

  1. 一种调度方法，其特征在于，所述方法用于将终端切换到目标小区的过程中，包括：
    所述目标小区所在的目标基站接收终端发送的随机接入请求；
    所述目标基站根据所述随机接入请求向所述终端发送随机接入响应；
    所述目标基站在发送所述随机接入响应之后且接收到切换完成命令之前，主动向所述终端发送上行授权。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述目标基站接收到所述终端发送的切换完成命令时，停止主动向所述终端发送上行授权。
  3. 根据权利要求1所述的方法，其特征在于，所述目标基站主动向所述终端发送上行授权包括：
    所述目标基站在预设时间内向所述终端发送多个上行授权；且所述方法还包括：
    所述目标基站在所述预设时间到期后停止主动向所述终端发送上行授权。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述目标基站接收所述终端发送的缓冲区状态报告BSR或调度请求SR；
    所述目标基站根据所述BSR或所述SR停止主动向所述终端发送上行授权。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述目标基站主动向所述终端发送上行授权之前，还包括：
    所述目标基站判断所述终端当前是否有语音业务；且所述目标基站主动向所述终端发送上行授权，包括：
    当所述终端当前有语音业务时，所述目标基站在发送随机接入响应之后且接收到切换完成命令之前主动向所述终端发送上行授权。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述目标基站主动向所述终端发送上行授权，包括：
    所述目标基站在发送所述随机接入响应之后，增加所述终端的缓冲区 状态报告BSR的大小；
    所述目标基站根据增加后的BSR的大小，为所述终端分配上行资源；
    所述目标基站主动向所述终端发送用于指示所述上行资源的上行授权。
  7. 根据权利要求6所述的方法，其特征在于，所述目标基站增加所述终端的BSR的大小，包括：
    所述目标基站根据所述终端当前的业务属性，增加所述终端的BSR的大小；或者
    所述目标基站按预设大小增加所述BSR的大小。
  8. 根据权利要求1-5任一项所述的方法，其特征在于，所述目标基站主动向所述终端发送上行授权，包括：
    所述目标基站周期的主动向所述终端发送预设大小的上行授权。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述目标基站在发送随机接入响应之后且接收到切换完成命令之前，主动向所述终端发送上行授权，包括：
    所述目标基站从发送所述随机接入响应之后的第N个传输时间间隔TTI上开始向所述终端发送上行授权，所述N为大于或等于3，且小于或等于10的正整数。
  10. 根据权利要求9所述的方法，其特征在于，所述目标基站从发送所述随机接入响应之后的第N个传输时间间隔TTI上开始向所述终端发送上行授权，包括：
    所述目标基站从发送所述随机接入响应之后的第N个传输时间间隔TTI上开始向所述终端发送多个上行授权。
  11. 根据权利要求9或10所述的方法，其特征在于，所述N的取值为3。
  12. 一种基站，其特征在于，所述基站为终端切换到的目标小区所在的目标基站，包括：
    接收模块，用于接收所述终端发送的随机接入请求；
    发送模块，用于根据所述随机接入请求向所述终端发送随机接入响应；
    调度模块，用于在所述发送模块发送所述随机接入响应之后且在所述接收模块接收到切换完成命令之前，通过所述发送模块主动向所述终端发送上行授权。
  13. 根据权利要求12所述的基站，其特征在于，所述调度模块还用于：
    当所述接收模块接收到所述终端发送的切换完成命令时，控制所述发送模块停止主动向所述终端发送上行授权。
  14. 根据权利要求12所述的基站，其特征在于，所述调度模块具体用于：
    通过所述发送模块在预设时间内向所述终端发送多个上行授权；且控制所述发送模块在所述预设时间到期后停止主动向所述终端发送上行授权。
  15. 根据权利要求12所述的基站，其特征在于，所述接收模块还用于：接收所述终端发送的缓冲区状态报告BSR或调度请求SR；
    所述调度模块还用于：根据所述BSR或所述SR控制所述发送模块停止主动向所述终端发送上行授权。
  16. 根据权利要求12-15任一项所述的基站，其特征在于，还包括：
    判断模块，用于判断所述终端当前是否有语音业务；
    所述调度模块具体用于：
    当所述终端当前有语音业务时，在所述发送模块发送所述随机接入响应之后且在所述接收模块接收到切换完成命令之前，通过所述发送模块主动向所述终端发送上行授权。
  17. 根据权利要求12-16任一项所述的基站，其特征在于，所述调度模块具体用于：
    在所述发送模块发送所述随机接入响应之后，增加所述终端的缓冲区状态报告BSR的大小；
    根据增加后的BSR的大小，为所述终端分配上行资源；
    通过所述发送模块主动向所述终端发送用于指示所述上行资源的上行授权。
  18. 根据权利要求17所述的基站，其特征在于，所述调度模块具体 用于：
    根据所述终端当前的业务属性，增加所述终端的BSR的大小；或者
    按预设大小增加所述BSR的大小。
  19. 根据权利要求12-16任一项所述的基站，其特征在于，所述调度模块具体用于：周期的主动向所述终端发送预设大小的上行授权。
  20. 根据权利要求12-19任一项所述的基站，其特征在于，所述调度模块具体用于：
    从所述发送模块发送所述随机接入响应之后的第N个传输时间间隔TTI上开始通过所述发送模块向所述终端发送上行授权，所述N为大于或等于3，且小于或等于10的正整数。
  21. 根据权利要求20所述的基站，其特征在于，所述调度模块具体用于：
    从所述发送模块发送所述随机接入响应之后的第N个传输时间间隔TTI上开始通过所述发送模块向所述终端发送多个上行授权。
  22. 根据权利要求20或21所述的基站，其特征在于，所述N的取值为3。
PCT/CN2016/087029 2016-06-24 2016-06-24 调度方法和基站 WO2017219346A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/CN2016/087029 WO2017219346A1 (zh) 2016-06-24 2016-06-24 调度方法和基站
CN201680086371.3A CN109196908B (zh) 2016-06-24 2016-06-24 调度方法、基站和存储介质
EP16905887.2A EP3461178B1 (en) 2016-06-24 2016-06-24 Scheduling in handover
JP2018567273A JP6683849B2 (ja) 2016-06-24 2016-06-24 スケジューリング方法及び基地局
US16/228,149 US10743225B2 (en) 2016-06-24 2018-12-20 Scheduling method and base station
US16/914,892 US11109289B2 (en) 2016-06-24 2020-06-29 Scheduling method and base station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/087029 WO2017219346A1 (zh) 2016-06-24 2016-06-24 调度方法和基站

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/228,149 Continuation US10743225B2 (en) 2016-06-24 2018-12-20 Scheduling method and base station

Publications (1)

Publication Number Publication Date
WO2017219346A1 true WO2017219346A1 (zh) 2017-12-28

Family

ID=60783703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/087029 WO2017219346A1 (zh) 2016-06-24 2016-06-24 调度方法和基站

Country Status (5)

Country Link
US (2) US10743225B2 (zh)
EP (1) EP3461178B1 (zh)
JP (1) JP6683849B2 (zh)
CN (1) CN109196908B (zh)
WO (1) WO2017219346A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020020139A1 (zh) * 2018-07-23 2020-01-30 南京中兴新软件有限责任公司 无线接入方式切换方法、基站、终端和可读存储介质

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017049528A1 (zh) 2015-09-24 2017-03-30 富士通株式会社 传输时间间隔的配置方法、数据传输方法、装置以及系统
WO2018198378A1 (ja) * 2017-04-28 2018-11-01 富士通株式会社 無線端末、無線基地局、無線通信システム、無線通信方法
WO2019217464A1 (en) 2018-05-08 2019-11-14 Commscope Technologies Llc Proactive pusch grants to prevent rate throttling
CN112042255A (zh) * 2018-05-08 2020-12-04 康普技术有限责任公司 Lte rrc连接和nas附接程序期间的无偿pusch授权
US10813122B2 (en) * 2019-02-14 2020-10-20 Charter Communcations Operating, LLC Methods and apparatus for scheduling and/or granting uplink resources
US12069524B2 (en) * 2019-07-25 2024-08-20 Lg Electronics Inc. Method and apparatus for preventing data transmission to a source network after receiving an uplink grant from a target network in a wireless communication system
CN112533255B (zh) * 2019-09-17 2023-11-14 中兴通讯股份有限公司 一种终端切换控制方法、基站、存储介质
US20220303000A1 (en) * 2019-10-03 2022-09-22 Sony Group Corporation Communication device, base station device, and communication method
US11778528B2 (en) * 2020-03-13 2023-10-03 Qualcomm Incorporated Layer 1 based uplink-only cell switch
US11785636B1 (en) * 2021-09-03 2023-10-10 T-Mobile Innovations Llc Wireless communication network access for wireless user equipment based on their wireless network slices
WO2023085031A1 (ja) 2021-11-09 2023-05-19 ソニーグループ株式会社 基地局装置、通信装置、通信システム及び通信方法
CN114979976B (zh) * 2022-05-11 2023-11-03 中国电信股份有限公司 数据处理方法、装置、设备及介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101035356A (zh) * 2006-03-09 2007-09-12 华为技术有限公司 一种移动终端越区切换中网络侧业务数据的下发方法
CN101048001A (zh) * 2006-06-22 2007-10-03 华为技术有限公司 切换控制方法
US20070238463A1 (en) * 2006-04-05 2007-10-11 Nec Corporation Mobile communications system, base station apparatus, user equipment, and inter-cell handover control method for use therewith
CN101300754A (zh) * 2005-10-31 2008-11-05 Lg电子株式会社 在无线移动通信系统中发送和接收无线电接入信息的方法
CN101606419A (zh) * 2007-02-05 2009-12-16 日本电气株式会社 越区切换后目标小区中的资源分配

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE391376T1 (de) * 2004-10-01 2008-04-15 Matsushita Electric Ind Co Ltd Dienstgüte-bewusste ablaufsteuerung für aufwärtsübertragungen über zugeordneten kanälen
US20080268849A1 (en) * 2007-04-30 2008-10-30 Motorola, Inc. Method and apparatus for handover in a wireless communication system
CN101778418B (zh) * 2009-01-13 2014-03-19 中兴通讯股份有限公司 无线网络中触发或上报调度请求的方法和设备
CN101932052B (zh) * 2009-06-23 2016-08-24 华为技术有限公司 一种切换方法、用户终端及网络侧设备
US20110268085A1 (en) * 2009-11-19 2011-11-03 Qualcomm Incorporated Lte forward handover
US9002393B2 (en) * 2011-03-09 2015-04-07 Interdigital Patent Holdings, Inc. Desynchronized network access in M2M networks
CN103002526B (zh) * 2011-09-13 2015-06-03 华为技术有限公司 小区切换的控制和测量方法、装置及系统
CN103298130B (zh) * 2012-02-27 2016-06-08 鼎桥通信技术有限公司 上行数据传输方法、终端及通信系统
KR102220658B1 (ko) * 2014-04-11 2021-02-26 삼성전자 주식회사 이동통신 시스템에서 단말의 핸드오버 방법 및 장치
US10129905B2 (en) * 2014-09-01 2018-11-13 Telefonaktiebolaget Lm Ericsson (Publ) Conditional uplink radio resource utilization in a cellular network
US10630410B2 (en) * 2016-05-13 2020-04-21 Telefonaktiebolaget Lm Ericsson (Publ) Network architecture, methods, and devices for a wireless communications network

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101300754A (zh) * 2005-10-31 2008-11-05 Lg电子株式会社 在无线移动通信系统中发送和接收无线电接入信息的方法
CN101035356A (zh) * 2006-03-09 2007-09-12 华为技术有限公司 一种移动终端越区切换中网络侧业务数据的下发方法
US20070238463A1 (en) * 2006-04-05 2007-10-11 Nec Corporation Mobile communications system, base station apparatus, user equipment, and inter-cell handover control method for use therewith
CN101048001A (zh) * 2006-06-22 2007-10-03 华为技术有限公司 切换控制方法
CN101606419A (zh) * 2007-02-05 2009-12-16 日本电气株式会社 越区切换后目标小区中的资源分配

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3461178A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020020139A1 (zh) * 2018-07-23 2020-01-30 南京中兴新软件有限责任公司 无线接入方式切换方法、基站、终端和可读存储介质
CN110753376A (zh) * 2018-07-23 2020-02-04 中兴通讯股份有限公司 无线接入方式切换方法、基站、终端和可读存储介质

Also Published As

Publication number Publication date
EP3461178A1 (en) 2019-03-27
EP3461178A4 (en) 2019-03-27
US10743225B2 (en) 2020-08-11
CN109196908B (zh) 2020-12-15
US20190124571A1 (en) 2019-04-25
JP2019522933A (ja) 2019-08-15
JP6683849B2 (ja) 2020-04-22
EP3461178B1 (en) 2021-08-25
CN109196908A (zh) 2019-01-11
US20200329411A1 (en) 2020-10-15
US11109289B2 (en) 2021-08-31

Similar Documents

Publication Publication Date Title
WO2017219346A1 (zh) 调度方法和基站
US10827501B2 (en) Techniques for providing proximity services (ProSe) priority-related information to a base station in a wireless network
WO2018171759A1 (zh) 一种信息传输方法和装置
US20190159236A1 (en) Resource scheduling method and apparatus
EP3637898B1 (en) Resource allocation method, first device and second device
US10187246B2 (en) Method and apparatus for transmission mode conversion
CN113940130B (zh) 边链路调度请求的触发方法、装置和系统
EP3620016B1 (en) Method and apparatus for sending and receiving information on a wireless network
WO2020200135A1 (zh) 一种资源配置方法及通信装置
US20220104124A1 (en) Transceiver device and scheduling device
WO2021018283A1 (zh) 通信方法和通信装置
JP2011055464A (ja) Ｂｓｒの方法及び通信装置
WO2021087929A1 (zh) 一种随机接入的方法和装置
WO2021056702A1 (zh) 上行信号的发送和接收方法以及装置
CN114073159A (zh) 信号发送和接收方法以及装置
KR101311758B1 (ko) 기지국과 그 업링크 전송 방법
WO2021022423A1 (zh) 一种传输数据的方法和装置
WO2024032325A1 (zh) 一种测量方法、装置及计算机可读存储介质
WO2024207975A1 (zh) Sl-prs资源请求方法、设备、装置及存储介质
EP4164289A1 (en) Method for sending scheduling request and terminal
WO2023169362A1 (zh) 一种寻呼方法及其装置
WO2023169580A1 (zh) 数据传输方法及装置、存储介质、终端设备、网络设备
WO2021128016A1 (zh) 一种通信方法、装置及设备
EP4080970A1 (en) Method for transmitting data, and devices
CN114828272A (zh) 一种信息传输方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16905887

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018567273

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2016905887

Country of ref document: EP

Effective date: 20181219