WO2010031356A1 - 一种资源调度方法、基站以及通信系统 - Google Patents

一种资源调度方法、基站以及通信系统 Download PDF

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Publication number
WO2010031356A1
WO2010031356A1 PCT/CN2009/074052 CN2009074052W WO2010031356A1 WO 2010031356 A1 WO2010031356 A1 WO 2010031356A1 CN 2009074052 W CN2009074052 W CN 2009074052W WO 2010031356 A1 WO2010031356 A1 WO 2010031356A1
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Prior art keywords
reserved
semi
real
processes
data packet
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PCT/CN2009/074052
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English (en)
French (fr)
Inventor
李博
陈玉华
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华为技术有限公司
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Publication of WO2010031356A1 publication Critical patent/WO2010031356A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements

Definitions

  • a resource scheduling method, a base station, and a communication system A resource scheduling method, a base station, and a communication system.
  • the present application claims the priority of a Chinese application filed on September 22, 2008, with the application number 200810216305.0, the invention name is "a resource scheduling method, a base station, and a communication system.” The entire contents of this application are incorporated herein by reference.
  • the present invention relates to communication technologies, and in particular, to a resource scheduling method, a base station, and a communication system. Background technique
  • the 3GPP Long Term Evolution (LTE) system is based on packet switching (PS) in the overall architecture and WCDMA (Wideband Code Division Multiple Access).
  • PS packet switching
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the uplink and downlink of the TDD occupy different uplink and downlink subframes in the same frequency band.
  • the uplink and downlink ratio of the subframe can be configured.
  • HARQ Hybrid Automatic Retransmission Request
  • RTT HART ringback time
  • the voice service is a heavyweight service of mobile communication.
  • the service itself has a characteristic of data arrival interval after encoding, and on the other hand, the service is very sensitive to delay and jitter, and the source data packet needs to be obtained. It is sent in time, so in the previous mobile communication systems, the permanent connection of circuit switching is used to achieve the quality of service QoS requirements of such real-time services.
  • the maximum tolerable delay is specified. When the retransmission time of the voice service data packet reaches the maximum tolerance delay and cannot be received correctly, the packet is discarded.
  • the overall architecture of the 3GPP LTE system is based on packet switching, supporting IP bearer voice.
  • VoIP Voice over IP
  • the characteristics of real-time services should be utilized to ensure the quality of service for real-time services through system design and strict QoS mechanisms.
  • the dynamic interface and the hybrid automatic retransmission HARQ mechanism are used on the radio interface to complete resource scheduling, sharing, and correct data transmission.
  • the synchronous hybrid automatic repeat request HARQ mechanism is used in a stop mode, that is, multiple HARQ processes are used to process data in parallel, and each data packet in each process
  • the initial transmission and the retransmission are both processed according to a predetermined time interval, and the evolved base station eNB (the evolved NodeB) transmits the uplink grant signaling on the downlink physical control channel PDCCH (Physic Downlink Control Channel), and the user equipment UE
  • PDCCH Physical Downlink Control Channel
  • the eNB transmits the data packet on the uplink shared resource according to the uplink grant signaling.
  • the eNB receives and detects whether the data packet can be correctly decoded, and sends a positive or error feedback at a predetermined time. According to the feedback, the eNB performs scheduling of the next retransmission or initial transmission, and after each process sends a data packet, The transmission of the next data packet or the retransmission of this data packet cannot be performed until the corresponding feedback is received.
  • the prior art optimizes the packet scheduling algorithm and introduces semi-static Scheduling SPS (semi-persistent scheduling):
  • SPS semi-static Scheduling SPS
  • the user equipment UE transmits the uplink data through the uplink grant signaling on the PDCCH, and indicates that the subsequent periodicity is the same for the UE.
  • Uplink resource used to send new data. This semi-persistent scheduling satisfies the QoS requirements of real-time services on the one hand, and reduces the overhead of PDCCH signaling on the other hand.
  • the inventor has found that the above prior art has the following technical defects: Due to the uplink single carrier characteristic of the LTE system, that is, the same UE cannot transmit more than one data packet in the same subframe, when the HARQ process loopback time RTT and VoIP are real-time.
  • RTT is 10ms
  • SPS period is 20ms
  • packet retransmission and SPS initial transmission will be transmitted at the same time and conflict, which will lead to serious system performance. This problem is particularly serious, especially in TDD mode.
  • the embodiment of the present invention provides a resource scheduling method, a base station, and a communication system, to solve the problem that when the loopback time RTT and the semi-persistent scheduling period of the synchronous HARQ process have the same common multiple, the data packet retransmission and the SPS initial transmission will be at the same time.
  • the problem of transmission and collision is a problem that when the loopback time RTT and the semi-persistent scheduling period of the synchronous HARQ process have the same common multiple, the data packet retransmission and the SPS initial transmission will be at the same time.
  • a method for a user equipment to transmit a data packet is provided by the embodiment of the present invention. The method includes: receiving a notification message from a network, where the notification message includes related information that is determined by the network for a process for uplink semi-persistent scheduling. ;
  • the user equipment receives an indication from the network, the user equipment transmits a data packet in an uplink subframe corresponding to the reserved process.
  • a determining module configured to determine whether a process needs to be reserved for real-time services
  • a determining module configured to determine, if the determining module determines that a reservation process is required, to determine a reserved process for uplink semi-persistent scheduling
  • a communication module configured to send the related information of the process reserved by the determining module to the user equipment UE, and instruct the user equipment UE to transmit the data packet in an uplink subframe corresponding to the reserved process.
  • the communication system provided by the embodiment of the present invention includes: a base station, where the base station is connected to the user equipment UE in a communicable manner;
  • the base station is configured to determine that at least two processes are reserved for uplink semi-persistent scheduling; sending related information of the reserved process to the user equipment UE; indicating that the user equipment UE is in the reserved process
  • the corresponding uplink subframe transmits a data packet.
  • the resource scheduling method provided by the embodiment of the present invention reduces signaling transmission, reduces signaling overhead, and reserves services by reserving multiple processes for uplink semi-persistent scheduling, which can be solved in the prior art.
  • the conflicts in the uplink semi-persistent scheduling greatly improve the performance of the system and improve the user experience.
  • FIG. 1 is a flowchart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a method for determining a process reserved for uplink semi-persistent scheduling according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of resource scheduling performed on configuration type 1 according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another resource scheduling performed on configuration type 1 according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of resource scheduling performed on configuration type 3 according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another resource scheduling performed on configuration type 3 according to an embodiment of the present disclosure
  • FIG. 7 is a structural diagram of a base station according to an embodiment of the present invention.
  • the embodiment of the present invention provides a method for resource scheduling.
  • the base station determines that the reservation process is used for the uplink SPS scheduling, and sends a notification message to the user equipment UE, where the notification message carries the related information of the reserved process, and indicates that the user equipment UE uses the
  • the uplink subframe corresponding to the reserved process transmits a data packet. If the data packet transmission fails on the process in the reserved process, the data packet may be retransmitted according to the uplink subframe corresponding to the loopback time RTT of the process.
  • the method for resource scheduling provided by the embodiment of the present invention is described in detail by taking the real-time service scheduling in the LTE system as an example.
  • the embodiment of the present invention is not limited to the LTE system.
  • a method for resource scheduling when a real-time service needs to be transmitted, the method specifically includes:
  • Step 100 The eNB determines whether it is required to reserve a process for the real-time service.
  • the eNB when there is a real-time service that needs to be transmitted, the eNB first determines whether it needs to reserve a process for the real-time service to be transmitted, such as a loopback time RTT according to a subframe configuration type and the real-time service. a semi-persistent scheduling period to determine whether there is a conflict in the maximum tolerable delay of the real-time service. If there is a conflict, the process needs to be reserved for the real-time service, and the process proceeds to step 101; if there is no conflict, the judgment may be omitted. To reserve a process for the real-time service, go to step 104.
  • a process for the real-time service such as a loopback time RTT according to a subframe configuration type and the real-time service. a semi-persistent scheduling period to determine whether there is a conflict in the maximum tolerable delay of the real-time service. If there is a conflict, the process needs to be reserved for the real-time service, and the process proceeds to step 101;
  • determining whether there is a conflict may be comparing a loopback time RTT of the subframe configuration type with a least common multiple of the semi-persistent scheduling period of the real-time service and a maximum tolerable delay of the real-time service, if the subframe configuration Type loopback time RTT and semi-static tuning of the real-time service If the least common multiple of the period is less than or equal to the maximum tolerable delay of the real-time service, it is determined that there is a conflict; if the loopback time RTT of the subframe configuration type and the least common multiple of the semi-static scheduling period of the real-time service are greater than the real-time The maximum tolerance delay of the service determines that there is no conflict.
  • Step 101 The eNB determines that the reservation process is used for uplink semi-persistent scheduling.
  • the eNB when the real-time service needs to be transmitted, if it is determined that the process needs to be reserved for the real-time service, the eNB may reserve two processes by default, or may be reserved according to the real-time service. More than two processes. The eNB may randomly select two or more processes and reserve the selected process for uplink semi-persistent scheduling to transmit the real-time traffic.
  • Step 102 The eNB sends a notification message to the user equipment UE, where the notification message carries related information about the reserved process.
  • the notification message may be signaling, such as radio resource control (RRC) signaling. That is, the eNB may send the related information of the reserved process to the user equipment UE by using signaling, such as sending, by using the radio resource control RRC signaling, information about the reserved process to the
  • RRC radio resource control
  • the eNB may also send related information of the reserved process to the user equipment by using other signaling of the system.
  • the related information of the process may be a process number, a process number, a process set, a subframe number corresponding to the process, or a subframe set corresponding to the process or a multiple process mode, or may be in the foregoing information. Any two, multiple, or all, etc.
  • a specific bit may be defined in the RRC signaling, and if the specific bit takes a value of 1, Indicates that 2 processes are reserved by default. If the specific bit takes a value of 0, it means that no process is reserved. It can also be represented by two or more specific bits in RRC signaling. Taking two specific bits as an example. If the value is "11”, it means that 3 processes are reserved, such as the value. “10” means that 2 processes are reserved. If the value is "00", it means that no process is reserved.
  • the related information of the reserved process may be carried by using the RRC signaling in other manners, for example, a cell may be defined in the RRC signaling to indicate the reservation.
  • Information about the process if there is no cell defined in the delivered RRC signaling, this means that this time
  • the real-time service transmission does not require a reservation process; if the defined RRC signaling includes the defined cell, the value of the cell indicates a reservation condition of a different process, and different values may indicate The number of different processes that are left may also represent a different set of processes that are reserved, and the like.
  • the cell may be defined in the RRC signaling to indicate whether the multi-process mode is a multiple pattern, such as the value of the cell. 1 can indicate that the multi-process mode Multiple pattern is used for this real-time service transmission.
  • Step 103 The eNB instructs the user equipment UE to transmit a data packet in a downlink subframe corresponding to the reserved process.
  • the eNB may indicate that the user equipment UE transmits a data packet in an uplink subframe corresponding to the reserved process by using PDCCH signaling.
  • the eNB may be an uplink subframe corresponding to a process that the first data packet transmission of the UE is to be used by using the PDCCH signaling, and the process that the first data packet transmission should use is Describe any of the reserved processes.
  • the user equipment UE receives the related information of the process that is reserved by the eNB, and receives the indication that the eNB sends to the UE, and the uplink corresponding to the reserved process.
  • the sub-frame transmits the data packet. If the uplink subframe corresponding to the process to be used by the first data packet transmission indicated by the eNB is started, the data packet is transmitted from the corresponding uplink subframe. Preferably, the user equipment UE may be sequentially used.
  • the uplink subframe corresponding to the reserved process is used to transmit the data packet.
  • the user equipment UE may also use other uplink manners to transmit data by using the uplink subframe corresponding to the reserved process.
  • the packet for example, can randomly use the uplink subframe corresponding to the reserved process to transmit data packets and the like.
  • the loopback in the process of transmitting a data packet by using the uplink subframe corresponding to the reserved process, if the data packet transmission fails on a certain process, the loopback according to the configuration type to which the process belongs may be used.
  • Time RTT performs data retransmission.
  • the data in the retransmission, the data may be retransmitted in an adaptive or non-adaptive manner.
  • the adaptive manner refers to: the default is adopted according to the original data packet.
  • the format is used to retransmit the data packet.
  • the non-adaptive manner refers to: retransmitting the data packet in a newly specified format during retransmission according to actual conditions.
  • the data packet transmission may be a transmission for semi-persistent scheduling of the real-time service or a dynamic scheduling transmission for other services.
  • the resource scheduling method provided by the embodiment of the present invention reduces signaling transmission and reduces signaling overhead.
  • the conflicts in the uplink semi-persistent scheduling in the prior art can be solved, and the performance of the system is greatly improved.
  • the eNB determines the reserved process for the uplink semi-persistent scheduling, in addition to the manner that the process can be randomly selected in the foregoing step 101, in the embodiment of the present invention, the eNB
  • the process reserved for uplink semi-persistent scheduling may also be determined according to the configuration type of the subframe and the semi-persistent scheduling period of the real-time service and the maximum tolerable delay of the real-time service.
  • the processes may be referred to as adjacent processes.
  • the eNB may determine the reservation among the adjacent processes.
  • the process used for upstream semi-persistent scheduling may be used for upstream semi-persistent scheduling.
  • Mode 1 You can select two adjacent processes as the reserved process in the adjacent process of the configuration type of the subframe.
  • the reserved two adjacent processes can be used as a reserved process set.
  • Mode 2 is a preferred method for determining a process reserved for uplink semi-persistent scheduling from an adjacent process according to an embodiment of the present invention, where the method specifically includes:
  • the maximum required number of processes is rounded up by dividing the maximum tolerable delay by the semi-static scheduling period.
  • the reserved number of processes for uplink semi-persistent scheduling may be determined according to a smaller value among the maximum number of neighbor processes and the maximum number of required processes, thereby further confirming For upstream semi-statically scheduled processes, these processes are all adjacent processes.
  • FIG. 2 is a schematic diagram of a method for determining a reserved process for uplink semi-persistent scheduling according to an embodiment of the present invention.
  • the eNB determines that the number of processes reserved for uplink semi-persistent scheduling may also be different from the number of processes determined in step S202, for example, may be greater than or less than the number of processes determined in S202.
  • the process of the uplink semi-persistent scheduling is determined according to the foregoing preferred method, according to the solution provided by the embodiment of the present invention, signaling is reduced, signaling overhead is reduced, and multiple processes are reserved. It is used for uplink semi-persistent scheduling to transmit services, which solves the conflict problem in the uplink semi-persistent scheduling in the prior art, and greatly improves the system performance. Further, the preferred scheme provided by the embodiment of the present invention determines the reserved processes for uplink semi-persistent scheduling, because the processes are selected from neighboring processes, so the scheme can further reduce semi-persistent scheduling. The delay and delay jitter of the data packet improves the user's business experience.
  • the transmission opportunity is performed.
  • the eNB can dynamically schedule the process to other services for data packet transmission according to actual needs. In this way, the reuse of processes further improves the utilization of resources and the performance of the system.
  • step 100 determines in step 100 that it is not necessary to reserve a process for the real-time service.
  • Step 104 The eNB sends a notification message to the user equipment UE, where the notification message carries information of no reservation process.
  • the notification message may be signaling, such as RRC (Radio Resource Control) signaling. Carrying the unreserved process through the RRC signaling
  • the information may be represented by a specific bit defined in the RRC signaling. If the specific bit takes a value of 0, it means that there is no reserved process, that is, no reserved process is needed. It may also be represented by two or more specific bits in the RRC signaling, taking two specific bits as an example. If the value is "00", it means that there is no reserved process, that is, no reserved process is needed. .
  • the information of the no-reservation process may be carried by using the RRC signaling in other manners, for example, a cell may be defined in the RRC signaling to indicate the reserved.
  • the related information of the process if there is no cell defined in the delivered RRC signaling, it means that the transmission of the real-time service does not need a reservation process; and the cell may be defined in the RRC signaling. Indicates whether it is a multi-pattern multi-pattern. If the cell has a value of 0, it means that the real-time service transmission does not adopt the multi-process mode.
  • Step 105 Instruct the user equipment UE to transmit a data packet in an uplink subframe corresponding to a semi-persistent scheduling period of the real-time service.
  • the service when it is determined that the process is not required to be reserved for the real-time service, the service may be transmitted according to the existing semi-persistent scheduling, for example, the eNB indicates that the user equipment UE is in the real-time service.
  • the uplink subframe transmission data packet corresponding to the semi-persistent scheduling period where the user equipment UE is notified of the semi-persistent scheduling period of the real-time service by using the PDCCH signaling, and the user equipment UE is activated in the half of the real-time service.
  • the uplink subframe corresponding to the static scheduling period transmits data packets.
  • the method for resource scheduling provided by the embodiment of the present invention is described in detail below by using configuration type 1 as an example.
  • the semi-persistent scheduling period of the real-time service is 20 ms
  • the maximum tolerable delay of the real-time service is 50 ms
  • the RTT of the subframe configuration type 1 is 10 ms.
  • the eNB may select two processes among the four processes and reserve them for uplink semi-persistent scheduling. For example, two processes may be selected among the four processes, and the process 1 is selected in this embodiment. ( rocess 1 ) and process 3 ( rocess 3 ).
  • the horizontal direction indicates the timing of the frame.
  • Each interval represents a lms sub-frame.
  • the vertical direction indicates different processes and the timing resources that the process can occupy.
  • the X-shaped small squares in the figure indicate the timing resources that the process can occupy.
  • the interval between two adjacent occupied timing resources of the process is the loopback time RTT of the process, as shown in the figure, being 10 ms.
  • the small square of the X-shaped mark indicated by the arrow in the figure indicates the timing resource for transmitting the new data packet; the number in the small square of the X-type mark indicates the serial number of the newly transmitted data packet; the small-sized X-shaped small square without the number Can be used for retransmission of data packets on this process.
  • the eNB may notify the user equipment of the two processes related to the UE by using the RRC signaling, such as the number of processes, the process ID, the process set, the subframe number corresponding to the process, or the set of subframes corresponding to the process.
  • the process pattern Multiple pattern may be any two, many or all of the above information.
  • the eNB indicates, by using the PDCCH signaling, that the user equipment UE transmits a data packet in an uplink subframe corresponding to the two reserved processes, for example, the eNB may indicate, by using PDCCH signaling, the first data packet of the UE.
  • the uplink subframe corresponding to the process to be used for transmission is activated, and the initial transmission of the packet 1 is performed on the corresponding subframe as shown in the figure.
  • the processing time requirement for transmitting the uplink data packet is determined according to the user equipment UE receiving the PDCCH signaling, and the time when the eNB sends the PDCCH signaling should be earlier than the activation time.
  • the user equipment UE may sequentially use the uplink subframe corresponding to the two processes to transmit data packets, that is, if the X-type small block indicated by the arrow in the figure transmits a new data packet, the semi-persistent scheduling period becomes 25 ms.
  • the time interval between the corresponding uplink subframe transmission data packet 3, the arrival period of the data packet arriving at the eNB is delayed by 5 ms and 5 ms earlier; of course, in the embodiment of the present invention, the user equipment UE may also be used in other manners.
  • the uplink subframe corresponding to the reserved process is used to transmit a data packet, for example, the uplink subframe corresponding to the reserved process may be randomly used to transmit a data packet.
  • All resource locations of the process can be adaptively or non-adaptively retransmitted.
  • the packet 1 on process 1 in the two processes is not correctly received by the eNB, then the process is in the process. 1
  • all the resource locations of the process that is, the position indicated by the X-mark small square on the process 1 in the figure, can be adaptive. Or non-adaptive retransmission.
  • the resource scheduling method provided by the embodiment of the invention reduces signaling transmission and reduces signaling overhead, and solves the conflict problem in the uplink semi-persistent scheduling in the prior art, improves system performance, and improves the system performance.
  • the eNB may perform the transmission opportunity according to actual needs.
  • the process is dynamically scheduled to other services for data transmission. For example, if it is determined that the data packet 1 on the process 1 in the two processes is correctly received by the eNB, the next time the data packet 3 is transmitted in the uplink subframe corresponding to the process, if there is a transmission opportunity, The eNB can reuse the process for dynamic scheduling as needed to transmit other services. At the time of sending the data packet 3, regardless of whether the previous data packet is successfully sent on the process, the eNB can terminate the transmission of the data packet 3. In this way, the reuse of processes further improves the utilization of resources and the performance of the system.
  • the semi-persistent scheduling period of the real-time service is 20 ms, and the maximum tolerable delay of the real-time service is 50 ms.
  • the resource scheduling solution provided by the embodiment of the present invention may be used to transmit the real-time service.
  • the preferred method provided by the embodiment of the present invention may be used to determine the reserved process for semi-persistent scheduling.
  • the horizontal direction indicates the timing of the frame. Each interval represents a lms subframe.
  • the vertical direction indicates different processes and the timing resources that the process can occupy.
  • the X-shaped flag in the figure is small.
  • the block indicates the time-series resources that the process can occupy.
  • the interval between two adjacent time-series resources of the same process is the loopback time RTT of the process, as shown in the figure, 10 ms;
  • the small squares indicate the timing resources used to transmit the new data packet;
  • the numbers in the small squares of the X-type mark indicate the serial number of the newly transmitted data packet; the small-sized X-mark small squares without the number can be used for the data packet on the process.
  • Retransmission As shown in the figure, the first two processes and the last two processes are adjacent processes because the occupied time resources are adjacent, so the maximum number of adjacent processes of the configuration type 1 is 2.
  • the two adjacent processes may be the first two adjacent processes, that is, the subset Subset 1, or may be The last two adjacent processes, the subset Subset 2.
  • the eNB may notify the user equipment of the information about the neighboring process reserved by the UE, such as the number of processes, the process ID, and the process.
  • the process set, the subframe number corresponding to the process, or the subframe set corresponding to the process or the multiple pattern, or further, may be any two, multiple or all of the above information.
  • the eNB may be configured to notify the user equipment that the UE is a multi-process mode by using the RRC signaling, where the eNB indicates, by using PDCCH signaling, that the user equipment UE corresponds to the two adjacent processes that are reserved.
  • the uplink subframe transmits a data packet, as the eNB may indicate the first data packet of the UE by using PDCCH signaling, and the data packet 1 in the figure, the uplink subframe corresponding to the process to be used for transmission, is activated in The initial transmission of the data packet 1 is performed on the corresponding subframe shown in the figure.
  • the PDCCH signaling indicates the first data packet
  • the data packet 1 in the figure uses the first uplink subframe to determine the present.
  • the transmission of the secondary real-time service is reserved as the process set of the subset Subset 1.
  • the processing time requirement for transmitting the uplink data packet is determined according to the user equipment UE receiving the PDCCH signaling, and the time when the eNB sends the PDCCH signaling should be earlier than the activation time.
  • the user equipment UE may sequentially transmit the data packet in the uplink subframe corresponding to two adjacent processes in the subset Subset 1, that is, the data packet is sent in the position indicated by the arrow in the figure, and the semi-persistent scheduling period changes. 21 ms, that is, the time interval between the transmission of the uplink subframe from the uplink subframe corresponding to the process 1 to the uplink subframe corresponding to the process 2, and the time interval between the transmission of the packet 2, and 19 ms, that is, corresponding to the process 2
  • the time interval between the uplink subframe transmission data packet 2 and the uplink subframe transmission data packet 3 corresponding to the process 1, the arrival period of the data packet arriving at the eNB is delayed by lms and the advancement respectively; of course, in the embodiment of the present invention,
  • the user equipment UE may also transmit the data packet by using the uplink subframe corresponding to the reserved process in other manners, for example, the uplink subframe corresponding to the reserved process may be randomly used to transmit the data packet.
  • all resources of the process are according to the loopback time RTT before the process is scheduled to transmit a new data packet.
  • the location may be adaptive or non-adaptive retransmission.
  • the process 1 is performed.
  • all the resource locations of the process that is, the positions indicated by the X-mark small squares on the process 1 in the figure, can be adaptive or non- Adaptive retransmission.
  • the resource scheduling method provided by the embodiment of the present invention reduces signaling transmission and reduces signaling overhead, and solves the conflict problem in the uplink semi-persistent scheduling in the prior art.
  • the scheme reduces semi-persistent scheduling data.
  • the delay and delay jitter of the packet improve the performance of the system and improve the user experience.
  • the eNB may Need to dynamically schedule the process to other services for data transmission. For example, if it is determined that the data packet 1 on the process 1 in the two adjacent processes is correctly received by the eNB, if there is a transmission opportunity before the next uplink subframe transmission of the data packet 3 corresponding to the process The eNB may re-use the process for dynamic scheduling according to the need to transmit other services. When the data packet 3 is sent, whether the previous data packet is successfully sent on the process is terminated, and the data packet 3 is directly sent. . In this way, the reuse of processes further improves the utilization of resources and the performance of the system.
  • the semi-persistent scheduling period of the real-time service is 20 ms, and the real-time service is the largest.
  • the tolerance delay is 50ms, and the RTT of configuration type 3 is 10ms.
  • the resource scheduling solution provided by the embodiment of the present invention may be used to transmit the real-time service.
  • the preferred method provided by the embodiment of the present invention may be used to determine the reserved process for semi-persistent scheduling.
  • the horizontal direction indicates the timing of the frame, and each interval represents a lms subframe; the vertical direction indicates different processes and timing resources that the process can occupy, and the X-shaped small square in the figure indicates that the process can be
  • the occupied time resource the interval between two adjacent occupied time resources of the same process is the loopback time RTT of the process, as shown in the figure, is 10 ms; the small square of the X-shaped mark indicated by the arrow in the figure indicates The timing resource for transmitting a new packet; the number in the X-mark small box indicates the sequence number of the newly transmitted packet; the X-mark small box without the number can be used for retransmission of the packet on the process; It is shown that all three processes are adjacent processes because the occupied time resources are adjacent, so the maximum number of adjacent processes of the configuration type 3 is 3.
  • the maximum number of adjacent processes, three, and the maximum number of required processes in the maximum tolerable delay, three it is determined that three adjacent processes are reserved for uplink semi-persistent scheduling.
  • the overall scheduling situation of the resources under the eNB is comprehensively considered, and the number of processes used by the eNB to determine the reserved uplink semi-persistent scheduling may also be different from the three processes determined to be reserved. If the number of processes reserved is determined to be greater or less than three.
  • the eNB may notify the user equipment of the information about the neighboring process reserved by the UE, such as the number of processes, the process number, the process set, and the process.
  • the subframe number or the subframe set corresponding to the process or the multi-pattern mode Multiple pattern may further be any two, plural or all of the above information.
  • the eNB indicates, by using the PDCCH signaling, that the user equipment UE transmits a data packet in an uplink subframe corresponding to the reserved three adjacent processes, for example, the eNB may indicate that the UE is first by using PDCCH signaling.
  • Packets as shown in packet 1, the uplink subframe corresponding to the process that should be used for transmission, activates the initial transmission of packet 1 on the corresponding subframe as shown.
  • the processing time requirement for transmitting the uplink data packet is determined according to the user equipment UE receiving the PDCCH signaling, and the time when the eNB sends the PDCCH signaling should be earlier than the activation time.
  • the user equipment UE may be used to sequentially transmit data packets corresponding to the uplink subframes corresponding to the three adjacent processes that are reserved, that is, when the data packet is sent as indicated by the arrow, the semi-persistent scheduling period is 21 ms respectively.
  • the arrival period of the packet arriving at the eNB is delayed by a maximum of 2 ms and a maximum of 2 ms.
  • the user equipment UE may also use other uplinks to transmit the uplink subframe corresponding to the reserved process.
  • the data packet for example, can randomly use the uplink subframe corresponding to the reserved process to transmit data packets and the like.
  • all resources of the process are according to the loopback time RTT before the process is scheduled to transmit a new data packet.
  • the location may be adaptive or non-adaptive retransmission.
  • the process 1 is performed.
  • all the resource locations of the process that is, the positions indicated by the X-mark small squares on the process 1 in the figure, can be adaptive or Non-adaptive retransmission.
  • the resource scheduling method provided by the embodiment of the present invention reduces signaling transmission and reduces signaling overhead, and solves the conflict problem in the uplink semi-persistent scheduling in the prior art.
  • the scheme reduces semi-persistent scheduling data.
  • the delay and delay jitter of the packet improve the performance of the system and improve the user experience.
  • the eNB can be dynamically scheduled to other services for data transmission according to actual needs. For example, if it is determined that the data packet 1 on the process 1 in the three adjacent processes is correctly received by the eNB, if there is a transmission opportunity before the next uplink subframe is used to transmit the new data packet. Then, the eNB may re-use the process for dynamic scheduling according to the need to transmit other services. When the new data packet is sent, regardless of whether the previous data packet is successfully sent on the process, the eNB can be terminated. The sending of a new packet. In this way, the reuse of processes further improves the utilization of resources and the performance of the system.
  • the semi-persistent scheduling period of the real-time service is 20 ms
  • the maximum tolerable delay of the real-time service is 50 ms.
  • the RTT of 3 is 10ms.
  • the least common multiple is 20ms, and the least common multiple is less than the maximum tolerable delay of 50ms, so it is judged that there is a conflict: the second retransmission in the data packet
  • the fourth retransmission will be in conflict with the initial transmission of the subsequent data packet, and the resource scheduling solution provided by the embodiment of the present invention may be used to transmit the real-time service.
  • the horizontal direction indicates the timing of the frame, and each interval represents a lms subframe; the vertical direction indicates different processes and timing resources that the process can occupy, and the X-shaped small square in the figure indicates that the process can be
  • the occupied time resource the interval between two adjacent occupied time resources of the same process is the loopback time RTT of the process, as shown in the figure, is 10 ms; the small square of the X-shaped mark indicated by the arrow in the figure indicates The timing resource for transmitting a new packet; the number in the X-mark small box indicates the sequence number of the newly transmitted packet; the X-mark small box without the number can be used for retransmission of the packet on the process; It is shown that all three processes are adjacent processes because the occupied time resources are adjacent, so the maximum number of adjacent processes of the configuration type 3 is 3.
  • two adjacent processes may be reserved in the three adjacent processes, such as the first two adjacent processes, as shown in the following subset.
  • Subset 1 Or it can be the next 2 adjacent processes, as shown in the subset Subset 2.
  • the eNB may notify the user equipment of the neighboring process reserved by the user equipment through RRC signaling, for example, It is the number of processes, the process ID, the process set, the subframe number corresponding to the process, or the subframe set corresponding to the process, or the multi-pattern mode. Further, any two, multiple, or all of the above information may be used. .
  • the eNB may notify the UE as a multi-process mode multiple pattern by using RRC signaling.
  • the eNB indicates, by using the PDCCH signaling, that the user equipment UE transmits a data packet in an uplink subframe corresponding to the reserved neighboring process, for example, the eNB may indicate the first data packet of the UE by using PDCCH signaling, As shown in packet 1, the uplink subframe corresponding to the process to be transmitted is transmitted, and the initial transmission of packet 1 on the corresponding subframe as shown in the figure is activated.
  • the PDCCH signaling indicates the first data packet, as shown in the data packet 1 in the figure, the transmission uses the first uplink subframe, and the reserved uplink subframe corresponding to the subset Subset 1 process set is reserved.
  • the subset is set to the Subset 2 process set.
  • Corresponding uplink subframe resource if the PDCCH signaling indicates the first data packet, as shown in the packet 1 in the figure, the transmission uses the second or third uplink subframe, then the subset is set to the Subset 2 process set. Corresponding uplink subframe resource.
  • the processing time requirement for transmitting the uplink data packet is determined according to the user equipment UE receiving the PDCCH signaling, and the time when the eNB sends the PDCCH signaling should be earlier than the activation time.
  • the reserved subset Subset 1 is taken as an example process description.
  • the user equipment UE may sequentially transmit the data packet in the uplink subframe corresponding to the two adjacent processes that are reserved, that is, when the data packet is sent in the position indicated by the arrow, the semi-persistent scheduling period is 21 ms respectively. , that is, the time interval between the uplink subframe transmission data packet 1 corresponding to the process 1 and the uplink subframe transmission data packet 2 corresponding to the process 2, 19 ms, that is, the uplink subframe corresponding to the process 2 transmits the data packet 2 to the process 1
  • the time interval between the corresponding uplink subframe transmission data packet 3, the maximum delay of the arrival period of the data packet arriving at the eNB is lms, the maximum advance lms; of course, in the embodiment of the present invention, the user equipment UE may also be other
  • the method uses the uplink subframe corresponding to the reserved process to transmit a data packet, for example, the uplink subframe corresponding to the reserved process may be randomly used to transmit a data packet.
  • all resource locations of the process can be adaptively or non-adaptively retransmitted, as shown in the figure, if the two are If the packet 1 on the process 1 in the adjacent process is not correctly received by the eNB, then the process 1 is scheduled to be used for transmitting the new data packet, according to the RTT of the process 1, all the processes are
  • the resource location that is, the location indicated by the X-mark small square on Process 1 in the figure, can be adaptive or non-adaptive retransmission.
  • the resource scheduling method provided by the embodiment of the present invention reduces the signaling transmission, reduces the signaling overhead, and solves the conflict problem in the uplink semi-persistent scheduling in the prior art; because it is in the adjacent process.
  • the process of the reservation is determined. Therefore, the solution can greatly reduce the delay and delay jitter of the semi-statically scheduled data packet, improve the system performance, and improve the user experience.
  • the eNB may Need to dynamically schedule the process to other services for data transmission. For example, if it is determined that the data packet 1 on the process 1 in the two adjacent processes is correctly received by the eNB, if there is a transmission opportunity before the next uplink subframe is used to transmit the new data packet. Then, the eNB may re-use the process for dynamic scheduling according to the need to transmit other services. When the new data packet is sent, regardless of whether the previous data packet is successfully sent on the process, the eNB can be terminated. The sending of a new packet. In this way, the reuse of processes further improves the utilization of resources and the performance of the system.
  • the uplink subframe corresponding to the semi-persistent scheduling period transmits data packets.
  • Semi-statically scheduled packet It can be temporarily occupied on different processes in a time relationship as in the prior art.
  • an embodiment of the present invention further provides a base station, where the base station includes a determining module 700, a determining module 702, and a communication module 704.
  • the determining module 700 is configured to determine whether a process needs to be reserved for real-time services.
  • the determining module 700 of the base station When there is a real-time service that needs to be transmitted, the determining module 700 of the base station first determines whether it is necessary to reserve a process for the real-time service to be transmitted, such as a loopback time RTT according to a subframe configuration type and a half of the real-time service.
  • the static scheduling period is used to determine whether there is a conflict in the maximum tolerable delay of the real-time service. If there is a conflict, the process needs to be reserved for the real-time service; if there is no conflict, the real-time service is not required to be reserved. process.
  • determining whether there is a conflict may be comparing a loopback time RTT of the subframe configuration type with a least common multiple of the semi-persistent scheduling period of the real-time service and a maximum tolerable delay of the real-time service, if the subframe configuration If the least common multiple of the type of the loopback time RTT and the semi-persistent scheduling period of the real-time service is less than or equal to the maximum tolerable delay of the real-time service, it is determined that there is a conflict; if the loopback time RTT of the subframe configuration type and the real-time If the least common multiple of the semi-persistent scheduling period of the service is greater than the maximum tolerable delay of the real-time service, it is determined that there is no conflict.
  • the determining module 702 is configured to: if the determining module 700 determines that a reservation process is required, determine that the reserved process is used for uplink semi-persistent scheduling;
  • the communication module 704 is configured to send the related information of the process reserved by the determining module 702 to the user equipment UE.
  • the user equipment UE is instructed to transmit the data packet in an uplink subframe corresponding to the reserved process.
  • the communication module 704 may send the related information of the determined process to the user equipment UE by using, for example, radio resource control (RRC) signaling.
  • the related information of the reserved process is sent to the user equipment UE.
  • the eNB may also send related information of the reserved process to the user equipment UE by using other signaling of the system.
  • the related information of the process may be the number of processes, the process ID, the process set, the subframe number corresponding to the process, or the subframe set corresponding to the process or the multiple process mode, or may be the above information. Any two, multiple or all Ministry.
  • the communication module 704 may be configured to indicate, by using the PDCCH signaling, that the user equipment UE transmits a data packet in an uplink subframe corresponding to the reserved process.
  • the communication module 704 may be an uplink subframe corresponding to a process that the user equipment UE should use for the first data packet transmission by using the PDCCH signaling, where the first data packet transmission should be used.
  • the process is any one of at least two processes reserved.
  • the determining module 702 may include a random selection module 7020, configured to randomly select at least two processes, and determine to reserve at least two processes that are randomly selected for uplink semi-persistent scheduling.
  • the determining module 702 when determining the reserved process for the uplink semi-persistent scheduling, in addition to the manner in which the random selection module 7020 is used to randomly select the process, in the embodiment of the present invention, the determining module 702
  • the process reserved for uplink semi-persistent scheduling may also be determined according to information such as a configuration type of the subframe and a semi-persistent scheduling period. details as follows:
  • the determining module 702 may further include a calculating module 7022, an confirming submodule 7024, and a selecting submodule 7026;
  • the confirmation sub-module 7024 is configured to determine, according to the configuration type of the subframe, a maximum number of neighbor processes in the configuration type.
  • the selecting sub-module 7026 is configured to determine, according to the maximum required number of processes in the maximum tolerable delay determined by the calculating module 7022 and the maximum number of neighbor processes confirmed by the confirming submodule 7024, that the reserved for uplink Semi-statically scheduled process.
  • the selecting sub-module 7026 may determine the number of reserved processes for uplink semi-persistent scheduling according to a smaller value of the maximum number of neighbor processes and the maximum number of required processes. This can be further confirmed for uplink semi-persistent scheduling Processes, these processes are all adjacent processes.
  • the communication module 704 is further configured to: if the determining module 700 determines that the process is not required to be reserved for the real-time service, send a notification message to the user equipment UE, where the notification message carries information of a no-reservation process; Instructing the user equipment UE to transmit a data packet in an uplink subframe corresponding to a semi-persistent scheduling period of the real-time service.
  • the base station provided by the embodiment of the present invention performs resource scheduling, reduces signaling transmission, and reduces signaling overhead.
  • resource scheduling By reserving multiple processes for uplink semi-static scheduling to transmit services, the solution is well solved. There are conflicts in the uplink semi-static scheduling in the technology, which greatly improves the system performance.
  • the embodiment of the present invention further provides a communication system, where the system includes a base station, and the base station is communicably connected to the user equipment UE.
  • the base station determines that the real-time service needs to be Reserving the process, determining that the reservation process is used for uplink semi-persistent scheduling; sending a notification message to the user equipment UE, where the notification message carries related information of the reserved process; and indicating that the user equipment UE is in the pre- The uplink subframe corresponding to the reserved process transmits the data packet.
  • the base station when the base station determines that the reserved process is used for uplink semi-persistent scheduling, the base station may reserve two processes by default, or may reserve more than two processes according to the real-time service.
  • the base station may randomly select two or more processes to reserve for uplink semi-persistent scheduling, or may determine the pre-determination according to the configuration type of the subframe and the semi-persistent scheduling period, as described in the foregoing embodiment.
  • the process is reserved for the uplink semi-persistent scheduling. For the specific manner, refer to the embodiment of FIG. 2 above.
  • the notification message may be signaling, and the signaling carries information about the process of determining the reservation, such as radio resource control.
  • RRC Radio Resource Control
  • the related information of the process may be the number of processes, the process ID, the process set, the subframe number corresponding to the process, or the subframe set corresponding to the process or the multiple process mode, or may be the above information. Any two, multiple or all.
  • the base station may be configured to indicate, by using PDCCH signaling, that the user equipment UE transmits a data packet in an uplink subframe corresponding to the reserved process.
  • the base station may be Determining, by using the PDCCH signaling, an uplink subframe corresponding to a process that the first data packet transmission of the UE is to use, and the process that the first data packet transmission should use is the reserved at least two processes. Any of them.
  • the user equipment UE receives the notification message from the base station, acquires related information of the reserved process, and receives an indication sent by the base station to the UE, where the reserved subframe corresponds to the uplink subframe. Transfer packets. If the uplink subframe corresponding to the process to be used by the first data packet transmission indicated by the base station is started, the data packet is transmitted from the corresponding uplink subframe, and the user equipment UE may sequentially use the reservation. The uplink subframe corresponding to the process is used to transmit the data packet. Of course, in the embodiment of the present invention, the user equipment UE may also use other uplinks to transmit the data packet, such as the uplink subframe corresponding to the reserved process. The uplink subframe corresponding to the reserved process may be randomly used to transmit data packets and the like.
  • the loopback time RTT according to the configuration type to which the process belongs may be used.
  • the data may be retransmitted in an adaptive or non-adaptive manner.
  • the adaptive manner refers to: the default is adopted according to the original data packet.
  • the format is used to retransmit the data packet.
  • the non-adaptive manner refers to: retransmitting the data packet in a newly specified format during retransmission according to actual conditions.
  • the retransmission is terminated.
  • the new data packet is transmitted on the process.
  • the last data packet transmission of the process may be a transmission for the semi-persistent scheduling of the real-time service or a dynamic scheduling for other services.
  • the system provided by the embodiment of the present invention performs resource scheduling, reduces signaling transmission, and reduces signaling overhead.
  • the base station can dynamically schedule the process to other services for data packet transmission according to actual needs. In this way, the reuse of processes further improves the utilization of resources and the performance of the system.
  • the base station if it is determined that the real-time service reservation process is not required, sends a notification message to the user equipment UE, where the notification message carries information of the no-reservation process;
  • the uplink subframe transmission data packet corresponding to the semi-persistent scheduling period of the real-time service.
  • the user equipment UE receives the notification message from the base station, and learns that the base station has no reservation process, and the UE receives the indication from the base station, and transmits the data packet according to the uplink subframe corresponding to the semi-persistent scheduling period of the real-time service.
  • the indication may be PDCCH signaling.
  • the reservation process is determined to be used for the uplink semi-static scheduling
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Description

一种资源调度方法、 基站以及通信系统 本申请要求了 2008年 09月 22日提交的， 申请号为 200810216305.0, 发 明名称为 "一种资源调度方法、 基站以及通信系统" 的中国申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术， 尤其涉及一种资源调度方法、 基站以及通信系统。 背景技术
3GPP长期演进 (Long Term Evolution, LTE)相比目前第三代移动通信系 统， 其系统在整体架构基于分组交换（Packet Switch, PS ) , 另外作为宽度码 分多址 WCDMA ( Wideband Code Division Multiple Access )和时分 -同步码分 多址 TD-SCDMA ( Time Division- Synchronous Code Division Multiple Access ) 共同的长期演进， 保留了频分复用 FDD ( Frequency Division Duplex )和时分 复用 TDD ( Time Division Duplex ) 两种双工模式， 其中 TDD上下行占用在同 一频段上不同的上下行子帧。 为了更加灵活的匹配上下行业务量的不同， 在 TDD模式下， 子帧的上下行配比是可以配置的， 目前标准支持七种不同的子 帧配置， 其中配置的子帧上下行、 相应的上行同步混合自动重传请求 HARQ ( Hybrid Automatic Retransmission Request )进程数以及 HARQ回环时间 RTT ( Round Trip Time )如下表一所示， 可见除配置 0和配置 6以外的其它所有配 置的 HARQ回环时间都为 10ms:
上下行子帧 周期 子帧号 进程 配置 (Periodicity) (Subframe number) 编号
( UL/DL ( Process
allocation ) Number )
0 1 2 3 4 5 6 7 8 9
0 5 ms D s u U U D S U U U 7 11.67ms
1 5 ms D s u u D D S u u D 4 10ms
2 5 ms D s u D D D s u D D 2 10ms
3 10 ms D s u U U D D D D D 3 10ms
4 10 ms D s u U D D D D D D 2 10ms
5 10 ms D s u D D D D D D D 1 10ms
6 10 ms D s u U U D S U U D 6 12ms 注： 表中 U表示上行， D表示下行。
语音业务是移动通信的重量级业务， 一方面业务自身信源编码后具有周 期性到达时间间隔（ data arrival interval )的特性， 另一方面业务对时延和抖动 非常敏感， 信源数据包需要得到及时的被发送， 因此在此前的移动通信系统 中多通过电路交换的永久性连接来达到此类实时业务的服务质量 QoS要求。为 了保证语音业务对时延敏感的特性， 规定了最大容忍时延， 当语音业务数据 包的重传时间到达最大容忍时延仍不能正确接收时， 丟弃该包。
3GPP LTE 系统的系统整体架构是基于分组交换， 在支持 IP承载语音
( Voice over IP, VoIP )等实时业务时， 应利用实时业务的特点， 通过系统设 计和严格的 QoS机制， 保证实时业务的服务质量。
目前的 LTE系统， 为了总体上提高系统的可靠性和有效性，无线接口上采 用动态调度和混合自动重传 HARQ的机制来完成资源的调度、共享以及数据的 正确传输。 其中， 对于 LTE系统在 TDD模式下的上行传输， 使用停等方式的同 步混合自动重传请求 HARQ机制， 即采用多个 HARQ进程 ( HARQ Process ) 并行处理数据， 每一个进程上的每一个数据包的初始传输和重传， 都按照预 定的时间间隔进行处理， 演进基站 eNB ( evolution NodeB )在下行物理控制信 道 PDCCH(Physic Downlink Control Channel)上发送上行许可信令，用户设备 UE
( User Equipment )按照所述上行许可信令在上行共享资源上发送数据包， 所 述 eNB接收并检测数据包是否能够正确解码，并在预定的时间上发送正面或者 错误反馈， 按照反馈， 所述 eNB进行下一次重传或者初传的调度， 每一个进程 发送一个数据包以后， 在收到相应反馈之前， 不能够进行下一个数据包的发 送或者本数据包的重传。
为了保证 VoIP等实时业务的低时延以及低时延抖动的 QoS要求，同时利用 VoIP等实时业务数据包周期性的到达时间间隔， 现有技术在包调度算法上进 行了优化， 引入了半静态调度 SPS ( semi-persistent scheduling ) ： 在 VoIP等实 时业务刚进入通话状态时，通过 PDCCH上的上行许可信令指示用户设备 UE发 送上行数据， 并且指示后续周期性的都为 UE保留与此相同的上行资源， 用于 发送新的数据。 这种半静态调度一方面满足实时业务的 QoS要求， 另一方面减 少 PDCCH信令的开销。
发明人发现上述现有技术存在如下技术缺陷： 由于 LTE系统的上行单载 波特性， 即同一个 UE不可以在同一子帧传输多于一个数据包， 当同步 HARQ 进程的回环时间 RTT和 VoIP等实时业务的半静态调度周期具有相同的公倍数 时， 如： RTT为 10ms, SPS周期为 20ms, 数据包的重传和 SPS初始传输就 会在同一时刻进行传输进而发生冲突， 这样会导致系统性能的严重下降， 尤 其是在在 TDD模式下， 该问题尤为严重。
发明内容
本发明实施例提供了一种资源调度方法、 基站以及通信系统， 以解决当 同步 HARQ进程的回环时间 RTT和半静态调度周期具有相同的公倍数时数据 包的重传和 SPS初始传输会在同一时刻进行传输进而发生冲突的问题。
本发明实施例提供的资源调度方法， 具体为：
当需要传输实时业务时， 若判断需要为所述实时业务预留进程， 确定预 留进程用于上行半静态调度；
发送通知消息给用户设备 UE, 所述通知消息中携带所述预留的进程的相 关信息；
指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据包。 本发明实施例提供的一种用户设备传输数据包的方法， 该方法包括： 接收来自网络的通知消息， 所述通知消息包括所述网络确定预留的用于 上行半静态调度的进程的相关信息；
接收来自网络的指示， 所述用户设备在所预留的进程对应的上行子帧传 输数据包。
本发明实施例提供的基站， 包括：
判断模块， 用于判断是否需要为实时业务预留进程；
确定模块， 用于若所述判断模块判断需要预留进程， 则确定预留进程用 于上行半静态调度；
通信模块， 用于将所述确定模块所预留的进程的相关信息发送给用户设 备 UE;指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据包。
本发明实施例提供的通信系统， 该系统包括基站， 所述基站以可通信方 式同用户设备 UE相连；
所述基站用于确定预留至少两个进程用于上行半静态调度； 将所述预留 的进程的相关信息发送给所述用户设备 UE; 指示所述用户设备 UE在所述预 留的进程对应的上行子帧传输数据包。
通过本发明实施例提供的资源调度方法， 减少了信令的发送， 降低了信 令开销， 通过预留多个进程用于上行半静态调度来进行业务传输， 可以艮好 的解决现有技术中上行半静态调度中的存在的冲突问题， 极大的提升系统的 性能， 提升了用户的业务体验。
附图说明
图 1为本发明实施例提供的资源调度方法流程图；
图 2 为本发明实施例提供的较优的确定预留用于上行半静态调度的进程 的方法示意图；
图 3为本发明实施例提供的在配置类型 1上进行资源调度的示意图； 图 4为本发明实施例提供的另一种在配置类型 1上进行资源调度的示意 图； 图 5为本发明实施例提供的在配置类型 3上进行资源调度的示意图； 图 6为本发明实施例提供的另一种在配置类型 3上进行资源调度的示意 图；
图 7为本发明实施例提供的基站结构图。
具体实施方式
为使本发明实施例的目的、 技术方案以及优点表达的更清楚明白、 下面 结合具体实施例和附图详细说明本发明实施例提供的技术方案。
针对 LTE系统中上行同步 HARQ条件下的实时业务的半静态调度 SPS, 本发明实施例提供了一种资源调度的方法， 本实施例中， 当有实时业务需要 传输时， 若判断需要为所述实时业务预留进程， 则基站确定预留进程用于上 行 SPS调度； 发送通知消息给用户设备 UE, 所述通知消息中携带所述预留的 进程的相关信息；指示所述用户设备 UE使用所述预留的进程对应的上行子帧 传输数据包。 若所述预留的进程中的某进程上的数据包传输失败， 则可以根 据该进程的回环时间 RTT所对应的上行子帧来重传所述数据包。
下面以在 LTE系统中的实时业务调度为例来详细说明本发明实施例提供 的资源调度的方法， 但本发明实施例并不仅限于 LTE系统。
如图 1 所示， 本发明实施例提供的一种资源调度的方法， 当有实时业务 需要传输时， 该方法具体包括：
步骤 100、 eNB判断是否需要为所述实时业务预留进程；
本发明实施例中， 当有实时业务需要传输时， 所述 eNB首先判断是否需 要为所述待传输的实时业务预留进程， 如可以是根据子帧配置类型的回环时 间 RTT和所述实时业务的半静态调度周期来判断在所述实时业务的最大容忍 时延内是否存在冲突， 若存在冲突， 则需要为所述实时业务预留进程， 转步 骤 101 ; 若不存在冲突， 则判断可以不用为所述实时业务预留进程， 可转步骤 104。 这里， 在判断是否存在冲突可以是比较所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期的最小公倍数和所述实时业务的最大 容忍时延， 若所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调 度周期的最小公倍数小于等于所述实时业务的最大容忍时延， 则判断存在冲 突； 若所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期 的最小公倍数大于所述实时业务的最大容忍时延， 则判断不存在冲突。
步骤 101、 所述 eNB确定预留进程用于上行半静态调度。
本发明实施例中， 有实时业务需要传输时， 若判断需要为所述实时业务 预留进程， 则所述 eNB可以是缺省的预留两个进程， 也可以是根据所述实时 业务预留两个以上的进程。 所述 eNB可以是随机选择两个或多个进程并将所 选择的进程预留用于上行半静态调度来传输所述的实时业务。
步骤 102、 所述 eNB发送通知消息给用户设备 UE, 所述通知消息中携带 所述预留的进程的相关信息。
本发明实施例中，所述通知消息可以是信令，如可以是无线资源控制 RRC ( Radio Resource Control )信令。 即所述 eNB可以通过信令将所述预留的进 程的相关信息发送给所述用户设备 UE, 如通过所述无线资源控制 RRC信令 将所述预留的进程的相关信息发送给所述用户设备 UE, 当然， 所述 eNB也 可以是通过系统其他的信令将所述预留的进程的相关信息发送给所述用户设 备。 本实施例中， 所述进程的相关信息可以是进程个数、 进程号、 进程集合、 进程对应的子帧号或者进程对应的子帧集合或多进程模式 Multiple pattern,也 可以是上述信息中的任意两种、 多种、 或全部等。
本发明实施例中， 在通过所述 RRC信令携带所述预留的进程的相关信息 时， 可以是在 RRC信令中定义特定比特位来表示， 如该特定比特位取值为 1 时， 表示缺省的预留了 2个进程， 如该特定比特位取值为 0, 则表示不需要预 留进程。 也可以是以 RRC信令中的两个或多个特定比特位来表示， 以两个特 定比特位为例， 如取值为 "11" , 则表示预留了 3 个进程， 如取值为 "10" , 则表示预留了 2个进程， 如取值为 "00" , 则表示不需要预留进程。 当然， 本 发明实施例中， 也可以是采用其他方式通过所述 RRC信令来携带所述预留的 进程的相关信息， 如也可以是在 RRC信令中定义一个信元用于表示预留的进 程的相关信息， 如果在下发的 RRC信令中没有所述定义的信元， 则表示本次 实时业务的传输不需要预留进程； 如果在下发的 RRC信令中包含所述定义的 信元， 则该信元的取值表示不同的进程的预留情况， 如不同的取值可以表示 预留的不同进程数， 也可以表示预留的不同的进程集合等等； 还可以是在所 述 RRC信令中定义信元用于表示是否为多进程模式 Multiple pattern, 如该信 元取值为 1可表示为本次实时业务传输采用多进程模式 Multiple pattern。
步骤 103、 所述 eNB指示所述用户设备 UE在所述预留的进程对应的上 行子帧传输数据包。
本发明实施例中， 所述 eNB可以是通过 PDCCH信令来指示所述用户设 备 UE在所述预留的进程对应的上行子帧传输数据包。 优选的， 所述 eNB可 以是通过所述的 PDCCH信令来指示所述 UE第一个数据包传输应使用的进程 对应的上行子帧， 所述第一个数据包传输应使用的进程为所述预留的进程中 的任意一个。
本发明实施例中， 所述用户设备 UE接收由所述 eNB发送给该 UE的预 留的进程的相关信息， 接收所述 eNB发送给该 UE的指示， 在所述预留的进 程对应的上行子帧传输数据包。 如可以是根据所述 eNB的指示的第一个数据 包传输应使用的进程对应的上行子帧， 开始从相应上行子帧传输数据包， 优 选的，所述用户设备 UE可以是顺序循环使用所述预留的进程对应的上行子帧 来传输数据包， 当然， 本发明实施例中， 所述用户设备 UE也可以是以其他方 式来使用所述预留的进程对应的上行子帧来传输数据包， 如可以随机的使用 所预留的进程对应的上行子帧来传输数据包等。
进一步的， 本发明实施例中， 在通过所述预留的进程对应的上行子帧传 输数据包的过程中， 如果某进程上的数据包传输失败， 则可按照该进程所属 的配置类型的回环时间 RTT进行数据重传。 本发明实施例中， 在重传时， 可 以采用自适应、 或者非自适应的方式进行数据的重传， 这里， 所述的自适应 方式是指： 缺省的按照原数据包发送时采用的格式来重传所述数据包； 所述 的非自适应方式是指： 根据实际情况在重传时可采用新指定的格式来重传所 述数据包。 进一步的， 本发明实施例中， 若所述预留的进程中的某进程被调 度到进行新的数据包传输时， 如果该进程上一次的数据包传输还没有传输成 功， 则终止其重传， 在该进程上传输新的数据包， 这里， 所述的该进程上一 次的数据包传输可以是用于本实时业务半静态调度的传输还可以是用于其他 业务的动态调度的传输。
通过本发明实施例提供的资源调度方法， 减少了信令的发送， 降低了信 令开销。 通过预留多个进程用于上行半静态调度来进行业务传输， 可以艮好 的解决现有技术中上行半静态调度中的存在的冲突问题， 极大的提升系统的 性能。
进一步的， 若判断存在冲突， 所述 eNB在确定预留的用于上行半静态调 度的进程时， 除了上述步骤 101 中介绍的可以随机选择进程的方式外， 本发 明实施例中， 所述 eNB还可以根据子帧的配置类型以及所述实时业务的半静 态调度周期、 以及所述实时业务的最大容忍时延来确定预留用于上行半静态 调度的进程。 本发明实施例中， 若某几个进程所对应的子帧在时序上相邻， 则这些进程可称之为相邻进程， 则优选的， 所述 eNB可在这些相邻进程中确 定预留的用于上行半静态调度的进程。
如上所述在相邻进程中选择预留进程时， 可以有如下两种不同 方式： 方式 1、可以缺省的在子帧的配置类型的相邻进程中选择 2个相邻进程作 为预留进程， 所述预留的 2个相邻进程可作为预留的进程集合。 或者
方式 2、如图 2所示，是本发明实施例提供的一种优选的从相邻进程中确 定预留用于上行半静态调度的进程的方法， 该方法具体包括：
5200、 确定所述实时业务的最大容忍时延内的最大需求进程数。
本发明实施例中， 可以按照如下公式来确定在所述最大需求进程数： 最大需求进程数 = floor (最大容忍时延 /半静态调度周期 )
即所述最大需求进程数为所述最大容忍时延除以所述半静态调度周期后 上取整。
5201、 根据子帧配置类型确定该配置类型下的最大相邻进程数。
5202、 确定预留的用于上行半静态调度的进程。 本发明实施例中， 可根据在所述最大相邻进程数和所述最大需求进程数 中取较小的值来确定预留的用于上行半静态调度的进程数， 由此进一步可确 认用于上行半静态调度的进程， 这些进程都是相邻进程。
上述图 2是本发明实施例提供的一种较优的用于确定预留的用于上行半 静态调度的进程的方法， 可选的， 在本发明实施例中， 综合考虑 eNB下资源的 整体调度情况，所述 eNB确定预留的用于上行半静态调度的进程数也可以不同 于上述步骤 S202中确定的进程数， 如可以是大于或小于所述 S202中确定的进 程数。
根据上述较优方法确定好预留的用于上行半静态调度的进程后， 按照上 通过本发明实施例提供的方案， 减少了信令的发送， 降低了信令开销； 通过预留多个进程用于上行半静态调度来传输业务， 很好的解决了现有技术 中上行半静态调度中的存在的冲突问题， 极大的提升了系统性能。 进一步的， 通过本发明实施例提供的优选的方案来确定预留的用于上行半静态调度的进 程， 因为这些进程是从相邻进程中选择的， 因此该方案可以更进一步的降低 半静态调度数据包的时延和时延抖动， 提升了用户的业务体验。
优选的， 本发明实施例中， 如果所述预留的进程中的某进程上的数据包 未被正确接收、 且下一次调度使用该进程传输本业务的数据包之前还有传输 机会， 则所述 eNB可以根据实际需要， 将该进程动态调度给其他业务进行数 据包传输。 这样， 通过进程的重用， 进一步提高了资源的利用率以及系统的 性能。
进一步的，当步骤 100中所述 eNB判断不需要为所述实时业务预留进程， 则可执行下述步骤。
步骤 104、 所述 eNB发送通知消息给所述用户设备 UE, 所述通知消息中 携带无预留进程的信息。
本发明实施例中，所述通知消息可以是信令，如可以是无线资源控制 RRC ( Radio Resource Control )信令。 在通过所述 RRC信令携带所述无预留进程 的信息时， 可以是以 RRC信令中定义一个特定比特位来表示， 如该特定比特 位取值为 0, 则表示无预留进程， 即不需要预留进程。 也可以是以 RRC信令 中的两个或多个特定比特位来表示， 以两个特定比特位为例，如取值为 "00" , 则表示无预留进程， 即不需要预留进程。 当然， 本发明实施例中， 也可以是 采用其他方式通过所述 RRC信令来携带所述无预留进程的信息， 如也可以是 在 RRC信令中定义一个信元用于表示预留的进程的相关信息， 如果在下发的 RRC信令中没有所述定义的信元， 则表示本次实时业务的传输不需要预留进 程；还可以是在所述 RRC信令中定义信元用于表示是否为多进程模式 Multiple pattern, 如该信元取值为 0 可表示为本次实时业务传输不采用多进程模式 Multiple pattern„
步骤 105、指示所述用户设备 UE在所述实时业务的半静态调度周期对应 的上行子帧传输数据包。
本发明实施例中， 当判断不需要为所述实时业务预留进程时， 则可以按 照现有的半静态调度来进行业务传输， 如所述 eNB指示所述用户设备 UE在 所述实时业务的半静态调度周期对应的上行子帧传输数据包， 这里， 可以是 通过 PDCCH信令来告知所述用户设备 UE该实时业务的半静态调度周期，激 活所述用户设备 UE在所述实时业务的半静态调度周期对应的上行子帧传输 数据包。
下面具体以配置类型 1 为例来详细说明本发明实施例提供的资源调度的 方法。 如图 3所示， 该实施例中， 实时业务的半静态调度周期为 20ms, 该实 时业务的最大容忍时延为 50ms, 子帧配置类型 1的 RTT为 10ms。 因为 RTT, 为 10ms, 和半静态调度周期， 为 20ms, 的最小公倍数为 20ms, 该最小公倍 数小于最大容忍时延 50ms, 所以判断存在冲突： 在数据包的第二次重传和第 四次重传时将会和随后的数据包的初始传输相冲突， 可采用本发明实施例提 供的资源调度方案来传输实时业务。 如所述 eNB可以在四个进程中选择两个 进程并将其预留用于上行半静态调度， 如可以是随机的在所述四个进程中选 择两个进程， 本实施例中选择进程 1 ( rocess 1 )和进程 3 ( rocess 3 )。 图中 水平方向表示帧的时序， 每一个间隔表示一个 lms子帧， 垂直方向表示不同 的进程以及该进程可占用的时序资源， 图中的 X型标记小方块表示了该进程 可占用的时序资源， 同一进程相邻两个可占用的时序资源之间的间隔为该进 程的回环时间 RTT, 如图所示， 为 10ms。 图中箭头所指的 X型标记小方块表 示用于传输新的数据包的时序资源； X 型标记小方块中的数字表示新传输的 数据包的序列号；不带数字的 X型标记小方块可用于该进程上数据包的重传。
所述 eNB可以通过 RRC信令通知用户设备 UE预留的两个进程的相关信 息， 如可以是进程个数、 进程号、 进程集合、 进程对应的子帧号或者进程对 应的子帧集合或多进程模式 Multiple pattern, 进一步的， 也可以是上述信息中 的任意两种、 多种或全部。 所述 eNB通过 PDCCH信令指示所述用户设备 UE 在所述预留的 2个进程对应的上行子帧传输数据包， 如所述 eNB可以是通过 PDCCH信令指示所述 UE第一个数据包， 如图中的数据包 1 , 传输应使用的 进程对应的上行子帧， 激活在如图所示的相应子帧上进行数据包 1 的初始传 输。 本实施例中， 根据用户设备 UE接收 PDCCH信令进行判定到发送上行数 据包的处理时间需求， 所述 eNB发送 PDCCH信令的时刻应该提前于激活时 刻。
所述用户设备 UE 可以是顺序循环使用两个进程对应的上行子帧传输数 据包， 即在如图中箭头指示的 X型标记小方块传输新的数据包， 则半静态调 度周期变为 25ms, 即从进程 1对应的上行子帧传输数据包 1到进程 3对应的 上行子帧传输数据包 2之间的时间间隔， 和 15ms, 即从进程 3对应的上行子 帧传输数据包 2到进程 1对应的上行子帧传输数据包 3之间的时间间隔， 数 据包到达 eNB的到达周期分别延迟 5ms和提前 5ms; 当然，本发明实施例中， 所述用户设备 UE也可以是以其他方式来使用所述预留的进程对应的上行子 帧来传输数据包， 如可以随机的使用所预留的进程对应的上行子帧来传输数 据包等。
如果所述两个进程中的某进程上传输的数据包没有被所述 eNB 正确接 收， 则在该进程被调度到用于传输新的数据包之前， 按照回环时间 RTT, 该 进程所有的资源位置均可以进行自适应或者非自适应的重传， 如图所示， 若 所述两个进程中的进程 1上的数据包 1没有被所述 eNB正确接收， 则在该进 程 1下一次被调度到用于传输数据包 3之前， 按照该进程 1的 RTT, 该进程 所有的资源位置， 即图中进程 1上的 X型标记小方块所指示的位置， 均可以 进行自适应或者非自适应的重传。
通过本发明实施例提供的资源调度方法， 减少信令的发送， 降低了信令 开销， 很好的解决了现有技术中上行半静态调度中的存在的冲突问题， 提升 了系统性能， 提升了用户的业务体验。
优选的， 如果所预留的两个进程中的某进程上数据包传输成功、 且下一 次调度使用该进程传输本业务的数据包之前， 还有传输机会， 则所述 eNB可 以根据实际需要， 将该进程动态调度给其他业务进行数据传输。 例如， 如果 判断所述两个进程中的进程 1上的数据包 1被所述 eNB正确接收， 则在下一 次使用该进程对应的上行子帧传输数据包 3之前，若还有传输机会则所述 eNB 可以根据需要重用该进程进行动态调度， 用来传输其他业务， 在数据包 3 的 发送时刻， 无论该进程上先前的数据包是否成功发送， 都被终止， 直接开始 数据包 3 的发送。 这样， 通过进程的重用， 进一步提高了资源的利用率以及 系统的性能。
下面具体以配置类型 1 为例来详细说明本发明实施例提供的资源调度的 方法， 该实施例中， 实时业务的半静态调度周期为 20ms, 该实时业务的最大 容忍时延为 50ms, 子帧配置类型 1的 RTT为 10ms。 本实施例中， 因为 RTT, 为 10ms, 和半静态调度周期， 为 20ms, 的最小公倍数为 20ms, 该最小公倍 数小于最大容忍时延 50ms, 所以判断存在冲突： 在数据包的第二次重传和第 四次重传时将会和随后的数据包的初始传输相冲突， 可采用本发明实施例提 供的资源调度方案来传输实时业务。 所述 eNB在选择预留的进程时可采用本 发明实施例提供的优选方法来确定预留的用于半静态调度的进程。
如图 4所示， 水平方向表示帧的时序， 每一个间隔表示一个 lms子帧， 垂直方向表示不同的进程以及该进程可占用的时序资源， 图中的 X型标记小 方块表示了该进程可占用的时序资源， 同一进程相邻两个可占用的时序资源 之间的间隔为该进程的回环时间 RTT, 如图所示， 为 10ms; 图中箭头所指的 X型标记小方块表示用于传输新的数据包的时序资源； X型标记小方块中的 数字表示新传输的数据包的序列号； 不带数字的 X型标记小方块可用于该进 程上数据包的重传； 如图所示， 前两个进程以及后两个进程因为所占时序资 源相邻， 所以为相邻进程， 因此该配置类型 1的最大相邻进程数为 2。
为了避免在最大容忍时延内的冲突， 确定预留 2个相邻进程用于上行半 静态调度， 这两个相邻进程可以是前两个相邻进程， 即子集 Subset 1 , 也可以 是后两个相邻进程， 即子集 Subset 2。
以预留前两个相邻进程， 即子集 Subset 1为例， 所述 eNB可以通过 RRC 信令通知用户设备 UE预留的相邻进程的相关信息，如可以是进程个数、进程 号、 进程集合、 进程对应的子帧号或者进程对应的子帧集合或多进程模式 Multiple pattern, 进一步的， 也可以是上述信息中的任意两种、 多种或全部。 如这里，所述 eNB可以是通过所述 RRC信令通知用户设备 UE为多进程模式 Multiple pattern, 所述 eNB通过 PDCCH信令指示所述用户设备 UE在所述预 留的两个相邻进程对应的上行子帧传输数据包， 如所述 eNB 可以是通过 PDCCH信令指示所述 UE第一个数据包， 如图中的数据包 1 , 传输应使用的 进程对应的上行子帧， 激活在如图所示的相应子帧上进行数据包 1 的初始传 输， 这里， 所述 PDCCH信令指示第一个数据包， 如图中的数据包 1 , 传输使 用第一个上行子帧， 则确定本次实时业务的传输预留为子集 Subset 1 的进程 集合。 本实施例中， 根据用户设备 UE接收 PDCCH信令进行判定到发送上行 数据包的处理时间需求， 所述 eNB发送 PDCCH信令的时刻应该提前于激活 时刻。
所述用户设备 UE可以是顺序循环使用所述子集 Subset 1中的两个相邻进 程对应的上行子帧传输数据包， 即在如图中箭头指示位置发送数据包， 则半 静态调度周期变为 21ms, 即从进程 1对应的上行子帧传输数据包 1到进程 2 对应的上行子帧传输数据包 2之间的时间间隔， 和 19ms , 即从进程 2对应 的上行子帧传输数据包 2到进程 1对应的上行子帧传输数据包 3之间的时间 间隔， 数据包到达 eNB的到达周期分别延迟 lms和提前 lms; 当然， 本发明 实施例中，所述用户设备 UE也可以是以其他方式来使用所述预留的进程对应 的上行子帧来传输数据包， 如可以随机的使用所预留的进程对应的上行子帧 来传输数据包等。
如果所述两个相邻进程中的某进程上的数据包没有被所述 eNB 正确接 收， 则在该进程被调度到用于传输新的数据包之前， 按照回环时间 RTT, 该 进程所有的资源位置均可以进行自适应或者非自适应的重传， 如图所示， 若 所述两个相邻进程中的进程 1上的数据包 1没有被所述 eNB正确接收， 则在 该进程 1下一次被调度到用于传输数据包 3之前， 按照该进程 1的 RTT, 该 进程所有的资源位置， 即图中进程 1上的 X型标记小方块所指示的位置， 均 可以进行自适应或者非自适应的重传。
通过本发明实施例提供的资源调度方法， 减少信令的发送， 降低了信令 开销， 很好的解决了现有技术中上行半静态调度中的存在的冲突问题； 该方 案降低半静态调度数据包的时延和时延抖动， 艮好的提升了系统性能， 提升 了用户的业务体验。
优选的， 如果所预留的 2个相邻进程中的某进程上数据包传输成功、 且 下一次调度使用该进程传输本业务的数据包之前，还有传输机会，则所述 eNB 可以根据实际需要， 将该进程动态调度给其他业务进行数据传输。 例如， 如 果判断所述两个相邻进程中的进程 1上的数据包 1被所述 eNB正确接收， 则 在下一次使用该进程对应的上行子帧传输数据包 3之前， 若还有传输机会则 所述 eNB可以根据需要重用该进程进行动态调度， 用来传输其他业务， 在数 据包 3 的发送时刻， 无论该进程上先前的数据包是否成功发送， 都被终止， 直接开始数据包 3 的发送。 这样， 通过进程的重用， 进一步提高了资源的利 用率以及系统的性能。
下面具体以配置类型 3 为例来详细说明本发明实施例提供的资源调度的 方法， 该实施例中， 实时业务的半静态调度周期为 20ms, 该实时业务的最大 容忍时延为 50ms, 配置类型 3的 RTT为 10ms。 本实施例中， 因为 RTT, 为 10ms, 和半静态调度周期， 为 20ms, 的最小公倍数为 20ms, 该最小公倍数 小于最大容忍时延 50ms, 所以判断存在冲突： 在数据包的第二次重传和第四 次重传时将会和随后的数据包的初始传输相冲突， 可采用本发明实施例提供 的资源调度方案来传输实时业务。 所述 eNB在选择预留的进程时可采用本发 明实施例提供的优选方法来确定预留的用于半静态调度的进程。
如图 5所示， 水平方向表示帧的时序， 每一个间隔表示一个 lms子帧； 垂直方向表示不同的进程以及该进程可占用的时序资源， 图中的 X型标记小 方块表示了该进程可占用的时序资源， 同一进程相邻两个可占用的时序资源 之间的间隔为该进程的回环时间 RTT, 如图所示， 为 10ms; 图中箭头所指的 X型标记小方块表示用于传输新的数据包的时序资源； X型标记小方块中的 数字表示新传输的数据包的序列号； 不带数字的 X型标记小方块可用于该进 程上数据包的重传； 如图所示， 全部三个进程因为所占时序资源相邻， 所以 为相邻进程， 因此该配置类型 3的最大相邻进程数为 3。
为了避免在最大容忍时延内的冲突， 在最大容忍时延内的最大需求进程 数为 floor ( 50ms/20ms ) = 3 , 即在最大容忍时延内的最大需求进程数为 3个。
根据最大相邻进程数， 为 3 个， 和最大容忍时延内的最大需求进程数， 为 3个， 确定预留 3个相邻进程用于上行半静态调度。 可选的， 在本发明实 施例中， 综合考虑 eNB下资源的整体调度情况， 所述 eNB确定预留的用于上 行半静态调度的进程数也可以不同于上述确定预留的 3 个进程， 如确定预留 的进程数也可以是大于或小于 3个。
下面以预留 3个进程为例进行说明，所述 eNB可以通过 RRC信令通知用 户设备 UE预留的相邻进程的相关信息， 如可以是进程个数、 进程号、 进程集 合、 进程对应的子帧号或者进程对应的子帧集合或多进程模式 Multiple pattern, 进一步的， 也可以是上述信息中的任意两种、 多种或全部。 所述 eNB 通过 PDCCH信令指示所述用户设备 UE在所述预留的 3个相邻进程对应的上 行子帧传输数据包， 如所述 eNB可以是通过 PDCCH信令指示所述 UE第一 个数据包， 如图中的数据包 1 , 传输应使用的进程对应的上行子帧， 激活在如 图所示的相应子帧上数据包 1的初始传输。本实施例中，根据用户设备 UE接 收 PDCCH信令进行判定到发送上行数据包的处理时间需求， 所述 eNB发送 PDCCH信令的时刻应该提前于激活时刻。
所述用户设备 UE 可以是顺序循环使用所述预留的三个相邻进程对应的 上行子帧传输数据包， 即在如图箭头指示位置发送数据包， 则半静态调度周 期为分别变为 21ms ， 即从进程 1对应的上行子帧传输数据包 1到进程 2对 应的上行子帧传输数据包 2之间的时间间隔、 21ms, 即从进程 2对应的上行 子帧传输数据包 2到进程 3对应的上行子帧传输数据包 3之间的时间间隔、 18ms, 即从进程 3对应的上行子帧传输数据包 3到进程 1对应的上行子帧传 输新的数据包之间的时间间隔， 数据包到达所述 eNB 的到达周期最大延迟 2ms、 最大提前 2ms; 当然， 本发明实施例中， 所述用户设备 UE也可以是以 其他方式来使用所述预留的进程对应的上行子帧来传输数据包， 如可以随机 的使用所预留的进程对应的上行子帧来传输数据包等。
如果所述 3个相邻进程中的某进程上的数据包没有被所述 eNB正确接收， 则在该进程被调度到用于传输新的数据包之前， 按照回环时间 RTT, 该进程 所有的资源位置均可以进行自适应或者非自适应的重传， 如图所示， 若所述 3 个相邻进程中的进程 1上的数据包 1没有被所述 eNB正确接收， 则在该进程 1下一次被调度到用于传输新的数据包之前，按照该进程 1的 RTT,该进程所 有的资源位置， 即图中进程 1上的 X型标记小方块所指示的位置， 均可以进 行自适应或者非自适应的重传。
通过本发明实施例提供的资源调度方法， 减少信令的发送， 降低了信令 开销， 很好的解决了现有技术中上行半静态调度中的存在的冲突问题； 该方 案降低半静态调度数据包的时延和时延抖动， 艮好的提升了系统性能， 提升 了用户的业务体验。
优选的， 如果所预留的 3 个相邻进程中的某进程上数据包传输成功、 且 下一次调度使用该进程传输本业务的数据包之前，还有传输机会，则所述 eNB 可以根据实际需要， 将该进程动态调度给其他业务进行数据传输。 例如， 如 果判断所述 3个相邻进程中的进程 1上的数据包 1被所述 eNB正确接收， 则 在下一次使用该进程对应的上行子帧传输新的数据包之前， 若还有传输机会 则所述 eNB可以根据需要重用该进程进行动态调度， 用来传输其他业务， 在 所述新的数据包的发送时刻， 无论该进程上先前的数据包是否成功发送， 都 被终止， 直接开始所述新的数据包的发送。 这样， 通过进程的重用， 进一步 提高了资源的利用率以及系统的性能。
在相邻进程中确定预留的进程时， 除了按照图 2所示方式那样来确定预 留的进程外， 还可以是在所述相邻进程中缺省地预留 2个相邻进程， 可以把 该缺省地预留的 2个相邻进程作为一个进程集合。 具体的如图 6所示：
下面具体以配置类型 3 为例来详细说明本发明实施例提供的资源调度的 方法， 该实施例中， 实时业务的半静态调度周期为 20ms, 该实时业务的最大 容忍时延为 50ms, 配置类型 3的 RTT为 10ms。 本实施例中， 因为 RTT, 为 10ms, 和半静态调度周期， 为 20ms, 的最小公倍数为 20ms, 该最小公倍数 小于最大容忍时延 50ms, 所以判断存在冲突： 在数据包的第二次重传和第四 次重传时将会和随后的数据包的初始传输相冲突， 可采用本发明实施例提供 的资源调度方案来传输实时业务。
如图 6所示， 水平方向表示帧的时序， 每一个间隔表示一个 lms子帧； 垂直方向表示不同的进程以及该进程可占用的时序资源， 图中的 X型标记小 方块表示了该进程可占用的时序资源， 同一进程相邻两个可占用的时序资源 之间的间隔为该进程的回环时间 RTT, 如图所示， 为 10ms; 图中箭头所指的 X型标记小方块表示用于传输新的数据包的时序资源； X型标记小方块中的 数字表示新传输的数据包的序列号； 不带数字的 X型标记小方块可用于该进 程上数据包的重传； 如图所示， 全部三个进程因为所占时序资源相邻， 所以 为相邻进程， 因此该配置类型 3的最大相邻进程数为 3。
为了避免在最大容忍时延内的冲突， 缺省的可以在所述的 3 个相邻进程 中预留 2个相邻进程， 如可以是前 2个相邻进程， 如图所示的子集 Subset 1、 或可以是后面 2个相邻进程， 如图所示的子集 Subset 2。
下面以预留前 2个相邻进程， 如图所示的子集 Subset 1 , 为例进行说明， 所述 eNB可以通过 RRC信令通知用户设备 UE预留的相邻进程的相关信息， 如可以是进程个数、 进程号、 进程集合、 进程对应的子帧号或者进程对应的 子帧集合、 或多进程模式 Multiple pattern, 进一步的， 也可以是上述信息中的 任意两种、 多种或全部。 这里， 所述 eNB可以是通过 RRC信令来通知所述 UE为多进程模式 Multiple pattern。 所述 eNB通过 PDCCH信令指示所述用户 设备 UE在所述预留相邻进程对应的上行子帧传输数据包， 如所述 eNB可以 是通过 PDCCH信令指示所述 UE第一个数据包， 如图中的数据包 1 , 传输应 使用的进程对应的上行子帧， 激活在如图所示的相应子帧上数据包 1 的初始 传输。 这里， 如果所述 PDCCH信令指示第一个数据包， 如图中的数据包 1 , 传输使用如图第一个上行子帧， 则预留的是子集 Subset 1进程集合对应的上 行子帧资源； 如果所述 PDCCH信令指示第一个数据包， 如图中的数据包 1 , 传输使用如图第二个或者第三个上行子帧， 则所预留的是子集 Subset 2进程 集合对应的上行子帧资源。 本实施例中， 根据用户设备 UE接收 PDCCH信令 进行判定到发送上行数据包的处理时间需求， 所述 eNB发送 PDCCH信令的 时刻应该提前于激活时刻。 如图所示， 以预留子集 Subset 1为例进程说明。
所述用户设备 UE可以是顺序循环使用所述预留的 2个相邻进程对应的上 行子帧传输数据包， 即在如图箭头指示位置发送数据包， 则半静态调度周期 为分别变为 21ms , 即从进程 1对应的上行子帧传输数据包 1到进程 2对应 的上行子帧传输数据包 2之间的时间间隔、 19ms, 即从进程 2对应的上行子 帧传输数据包 2到进程 1对应的上行子帧传输数据包 3之间的时间间隔， 数 据包到达所述 eNB的到达周期最大延迟 lms、 最大提前 lms; 当然， 本发明 实施例中，所述用户设备 UE也可以是以其他方式来使用所述预留的进程对应 的上行子帧来传输数据包， 如可以随机的使用所预留的进程对应的上行子帧 来传输数据包等。
如果所述 2个相邻进程中的某进程上的数据包没有被所述 eNB正确接收， 则在该进程被调度到用于传输新的数据包之前， 按照回环时间 RTT, 该进程 所有的资源位置均可以进行自适应或者非自适应的重传， 如图所示， 若所述 2 个相邻进程中的进程 1上的数据包 1没有被所述 eNB正确接收， 则在该进程 1下一次被调度到用于传输新的数据包之前，按照该进程 1的 RTT,该进程所 有的资源位置， 即图中进程 1上的 X型标记小方块所指示的位置， 均可以进 行自适应或者非自适应的重传。
通过本发明实施例提供的资源调度方法， 减少信令的发送， 降低了信令 开销， 很好的解决了现有技术中上行半静态调度中的存在的冲突问题； 因为 是在相邻进程中确定预留的进程， 因此该方案可以很好的降低半静态调度数 据包的时延和时延抖动， 艮好的提升了系统性能， 提升了用户的业务体验。
优选的， 如果所预留的 2个相邻进程中的某进程上数据包传输成功、 且 下一次调度使用该进程传输本业务的数据包之前，还有传输机会，则所述 eNB 可以根据实际需要， 将该进程动态调度给其他业务进行数据传输。 例如， 如 果判断所述 2个相邻进程中的进程 1上的数据包 1被所述 eNB正确接收， 则 在下一次使用该进程对应的上行子帧传输新的数据包之前， 若还有传输机会 则所述 eNB可以根据需要重用该进程进行动态调度， 用来传输其他业务， 在 所述新的数据包的发送时刻， 无论该进程上先前的数据包是否成功发送， 都 被终止， 直接开始所述新的数据包的发送。 这样， 通过进程的重用， 进一步 提高了资源的利用率以及系统的性能。
进一步的， 对于平均回环时间 RTT为 11.67ms的配置类型 0、 或回环时 间 RTT为 12ms的配置类型 6, 针对半静态调度周期为 20ms、 最大容忍时延 为 50ms的实时业务： 由于 RTT和半静态调度周期的最小公倍数大于 50ms, 本实施例中， 分别为 233.4ms、 60ms, 因此判断在业务的最大容忍时延内不存 在冲突， 则这种情况下可以不用预留进程， 则所述 eNB可通过 RRC信令告知 所述用户设备 UE不需要为该实时业务预留进程，通过 PDCCH信令告知所述 用户设备 UE该实时业务的半静态调度周期，激活所述用户设备 UE在所述实 时业务的半静态调度周期对应的上行子帧传输数据包。 半静态调度的数据包 可如现有技术那样按照时间关系临时占据在不同的进程上。
如图 7所示，本发明实施例还提供了一种基站，该基站包括判断模块 700、 确定模块 702、 以及通信模块 704。
所述判断模块 700, 用于判断是否需要为实时业务预留进程。
当有实时业务需要传输时， 所述基站的判断模块 700首先判断是否需要 为所述待传输的实时业务预留进程， 如可以是根据子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期来判断在所述实时业务的最大容忍时 延内是否存在冲突， 若存在冲突， 则需要为所述实时业务预留进程； 若不存 在冲突， 则不需要为所述实时业务预留进程。 这里， 在判断是否存在冲突可 以是比较所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周 期的最小公倍数和所述实时业务的最大容忍时延， 若所述子帧配置类型的回 环时间 RTT和所述实时业务的半静态调度周期的最小公倍数小于等于所述实 时业务的最大容忍时延， 则判断存在冲突； 若所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期的最小公倍数大于所述实时业务的最 大容忍时延， 则判断不存在冲突。
所述确定模块 702, 用于若所述判断模块 700判断需要预留进程， 则确定 预留进程用于上行半静态调度；
通信模块 704,用于将所述确定模块 702所预留的进程的相关信息发送给 用户设备 UE; 指示所述用户设备 UE在所述预留的进程对应的上行子帧传输 数据包。
本发明实施例中， 所述通信模块 704可以是通过信令将所述确定预留的 进程的相关信息发送给所述用户设备 UE, 如可以是通过无线资源控制 RRC ( Radio Resource Control )信令将所述预留的进程的相关信息发送给所述用户 设备 UE, 当然， 所述 eNB也可以是通过系统其他的信令将所述预留的进程 的相关信息发送给所述用户设备 UE。 本实施例中， 所述进程的相关信息可以 是进程个数、 进程号、 进程集合、 进程对应的子帧号或者进程对应的子帧集 合或多进程模式 Multiple pattern, 也可以是上述信息中的任意两种、 多种或全 部。
本发明实施例中，所述通信模块 704可以是通过 PDCCH信令来指示所述 用户设备 UE在所述预留的进程对应的上行子帧传输数据包。优选的， 所述通 信模块 704可以是通过所述的 PDCCH信令来指示所述用户设备 UE第一个数 据包传输应使用的进程对应的上行子帧， 所述第一个数据包传输应使用的进 程为所述预留的至少两个进程中的任意一个。
可选的，本发明实施例中，所述确定模块 702可以包括随机选择模块 7020, 用于随机选择至少两个进程， 确定预留所述随机选择的至少两个进程用于上 行半静态调度。
可选的， 所述确定模块 702在确定预留的用于上行半静态调度的进程时 , 除了可使用随机选择模块 7020采用随机选择进程的方式外，本发明实施例中， 所述确定模块 702还可以根据子帧的配置类型以及半静态调度周期等信息来 确定预留用于上行半静态调度的进程。 具体如下：
可选的， 本发明实施例中， 所述确定模块 702还可以包括计算模块 7022、 确认子模块 7024和选择子模块 7026;
所述计算模块 7022, 用于根据所述最大容忍时延以及所述实时业务的半 静态调度周期确定在所述最大容忍时延内的最大需求进程数， 本发明实施例 中， 所述计算模块 7022可以按照如下公式来确定在所述最大需求进程数： 最 大需求进程数 = floor (最大容忍时延 /半静态调度周期）， 即最大需求进程数为 最大容忍时延除以半静态调度周期的商上取整。
所述确认子模块 7024, 用于根据所述子帧的配置类型确定该配置类型下 的最大相邻进程数。
所述选择子模块 7026,用于根据所述计算模块 7022确定的所述最大容忍 时延内的最大需求进程数和所述确认子模块 7024确认的最大相邻进程数确定 预留的用于上行半静态调度的进程。 本发明实施例中， 所述选择子模块 7026 可根据在所述最大相邻进程数和所述最大需求进程数中取较小的值来确定预 留的用于上行半静态调度的进程数， 由此进一步可确认用于上行半静态调度 的进程， 这些进程都是相邻进程。
所述通信模块 704还用于若所述判断模块 700判断不需要为所述实时业 务预留进程， 则发送通知消息给所述用户设备 UE, 所述通知消息中携带无预 留进程的信息；指示所述用户设备 UE在所述实时业务的半静态调度周期对应 的上行子帧传输数据包。
这样， 通过本发明实施例提供的基站来进行资源调度， 减少了信令的发 送， 降低了信令开销； 通过预留多个进程用于上行半静态调度来传输业务， 很好的解决了现有技术中上行半静态调度中的存在的冲突问题， 极大的提升 了系统性能。
进一步的， 本发明实施例还提供一种通信系统， 该系统包括基站， 所述 基站以可通信方式同用户设备 UE相连， 当需要传输实时业务时， 所述基站若 判断需要为所述实时业务预留进程， 则确定预留进程用于上行半静态调度； 发送通知消息给用户设备 UE, 所述通知消息中携带所述预留的进程的相关信 息； 指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据包。
在该系统中， 所述基站在确定预留进程用于上行半静态调度时， 可以是 缺省的预留两个进程， 也可以是根据所述实时业务预留两个以上的进程。 该 基站可以是随机选择两个或多个进程以预留用于上行半静态调度， 也可以是 如上述实施例所描述的那样， 根据子帧的配置类型以及半静态调度周期等信 息来确定预留用于上行半静态调度的进程， 具体方式参见上述图 2的实施例。
在该系统中， 如上述图 1至图 6的实施例所记载的方案， 所述通知消息 可以是信令， 该信令携带所述确定预留的进程的相关信息， 如可以是无线资 源控制 RRC ( Radio Resource Control )信令， 当然， 也可以是通过系统其他 的信令。 本实施例中， 所述进程的相关信息可以是进程个数、 进程号、 进程 集合、 进程对应的子帧号或者进程对应的子帧集合或多进程模式 Multiple pattern, 也可以是上述信息中的任意两种、 多种或全部。
本发明实施例中，所述基站可以是通过 PDCCH信令来指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据包。 优选的， 所述基站可以是 通过所述的 PDCCH信令来指示所述 UE第一个数据包传输应使用的进程对应 的上行子帧， 所述第一个数据包传输应使用的进程为所述预留的至少两个进 程中的任意一个。
该系统中，所述用户设备 UE接收来自所述基站的通知消息，获取预留的 进程的相关信息，接收所述基站发送给该 UE的指示，在所述预留的进程对应 的上行子帧传输数据包。 如可以是根据所述基站的指示的第一个数据包传输 应使用的进程对应的上行子帧， 开始从相应上行子帧传输数据包， 所述用户 设备 UE可以是顺序循环使用所述预留的进程对应的上行子帧来传输数据包， 当然，本发明实施例中， 所述用户设备 UE也可以是以其他方式来使用所述预 留的进程对应的上行子帧来传输数据包， 如可以随机的使用所预留的进程对 应的上行子帧来传输数据包等。
进一步的， 该系统中， 在通过所述预留的进程对应的上行子帧传输数据 包的过程中， 如果某进程上的数据包传输失败， 则可按照该进程所属的配置 类型的回环时间 RTT进行数据重传。 本发明实施例中， 在重传时， 可以采用 自适应、 或者非自适应的方式进行数据的重传， 这里， 所述的自适应方式是 指： 缺省的按照原数据包发送时采用的格式来重传所述数据包； 所述的非自 适应方式是指： 根据实际情况在重传时可采用新指定的格式来重传所述数据 包。 进一步的， 本发明实施例中， 若所述预留的进程中的某进程被调度到进 行新的数据包传输时， 如果该进程上一次的数据包传输还没有传输成功， 则 终止其重传， 在该进程上传输新的数据包， 这里， 所述的该进程上一次的数 据包传输可以是用于本实时业务半静态调度的传输还可以是用于其他业务的 动态调度的传输。
通过本发明实施例提供的系统进行资源调度， 减少了信令的发送， 降低 了信令开销。 通过预留多个进程用于上行半静态调度来进行业务传输， 可以 很好的解决现有技术中上行半静态调度中的存在的冲突问题， 极大的提升系 统的性能。
优选的， 该系统中， 如果所述预留的进程中的某进程上的数据包未被正 确接收、 且下一次调度使用该进程传输本业务的数据包之前还有传输机会， 则所述基站可以根据实际需要， 将该进程动态调度给其他业务进行数据包传 输。 这样， 通过进程的重用， 进一步提高了资源的利用率以及系统的性能。
进一步的， 所述基站若判断不需要为所述实时业务预留进程， 发送通知 消息给所述用户设备 UE, 所述通知消息中携带无预留进程的信息； 指示所述 用户设备 UE在所述实时业务的半静态调度周期对应的上行子帧传输数据包。 这里， 所述用户设备 UE接收来自所述基站的通知消息，获知基站没有预留进 程，该 UE接收来自所述基站的指示，根据该实时业务的半静态调度周期对应 的上行子帧传输数据包， 该指示可以是 PDCCH信令。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件完成， 所述的程序可以存储于一种计算机 可读存储介质中， 该程序在执行时， 包括如下步骤：
若判断需要为所述实时业务预留进程， 确定预留进程用于上行半静态调 度；
发送通知消息给用户设备 UE, 所述通知消息中携带所述预留的进程的相 关信息；
指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据包。 上述提到的存储介质可以是只读存储器， 磁盘或光盘等。
以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不 局限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可 轻易想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明 的保护范围应该以权利要求的保护范围为准。

Claims

权利 要求 书
1、 一种资源调度方法， 其特征在于， 当需要传输实时业务时， 该方法具体 包括：
若判断需要为所述实时业务预留进程， 确定预留进程用于上行半静态调度； 发送通知消息给用户设备 UE, 所述通知消息中携带所述预留的进程的相关 信息；
指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据包。
2、 如权利要求 1所述的方法， 其特征在于， 所述判断需要为所述实时业务 预留进程具体为：
根据子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期的最 小公倍数判断在所述实时业务的最大容忍时延内是否存在冲突， 若存在冲突， 则判断需要为所述实时业务预留进程。
3、 如权利要求 2所述的方法， 其特征在于， 所述根据子帧配置类型的回环 时间 RTT和所述实时业务的半静态调度周期的最小公倍数判断在所述实时业务 的最大容忍时延内是否存在冲突具体包括：
若所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期的 最小公倍数小于等于所述实时业务的最大容忍时延， 则判断存在冲突；
若所述子帧配置类型的回环时间 RTT和所述实时业务的半静态调度周期的 最小公倍数大于所述实时业务的最大容忍时延， 则判断不存在冲突。
4、 如权利要求 1所述的方法， 其特征在于， 所述确定预留进程用于上行半 静态调度具体为：
随机选择至少两个进程；
确定预留所述随机选择的至少两个进程用于上行半静态调度。
5、 如权利要求 1所述的方法， 其特征在于， 所述确定预留进程用于上行半 静态调度具体为：
根据所述实时业务的最大容忍时延以及所述实时业务的半静态调度周期确 定在所述最大容忍时延内的最大需求进程数； 根据子帧的配置类型确定该配置类型下的最大相邻进程数；
根据所述最大容忍时延内的最大需求进程数以及所述最大相邻进程数确定 预留的用于上行半静态调度的进程。
6、 如权利要求 1所述的方法， 其特征在于， 所述确定预留进程用于上行半 静态调度具体为：
在子帧的配置类型的相邻进程中选择两个相邻进程；
确定预留所述选择的两个相邻进程用于上行半静态调度。
7、 如权利要求 5所述的方法， 其特征在于， 所述确定在所述最大容忍时延 内的最大需求进程数具体为根据如下公式确定最大容忍时延内的最大需求进程 数：
最大需求进程数 = floor (最大容忍时延 /半静态调度周期）。
8、 如权利要求 1所述的方法， 其特征在于， 所述进程的相关信息为进程个 数、 进程号、 进程集合、 进程对应的子帧号或者进程对应的子帧集合或多进程 模式中的至少一个。
9、 如权利要求 1所述的方法， 其特征在于， 所述通知消息为无线资源控制 RRC信令。
10、 如权利要求 1 所述的方法， 其特征在于， 所述指示所述用户设备 UE 在所述预留的进程对应的上行子帧传输数据包具体为：
通过下行物理控制信道 PDCCH信令指示所述用户设备 UE在所述预留的进 程对应的上行子帧传输数据包。
11、 如权利要求 10所述的方法， 其特征在于， 所述通过下行物理控制信道 PDCCH信令指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据 包具体为：
通过所述下行物理控制信道 PDCCH信令指示所述用户设备 UE第一个数据 包传输应使用的进程对应的上行子帧。
12、 一种用户设备传输数据包的方法， 其特征在于， 该方法包括： 接收来自网络的通知消息， 所述通知消息包括所述网络确定预留的用于上 行半静态调度的进程的相关信息；
接收来自网络的指示， 所述用户设备在所预留的进程对应的上行子帧传输 数据包。
13、 如权利要求 12所述的方法， 其特征在于， 所述通知消息为无线资源控 制 RRC信令， 所述无线资源控制 RRC信令包括所述网络确定预留的用于上行 半静态调度的进程的相关信息。
14、 一种基站， 其特征在于， 该基站包括：
判断模块（700 ), 用于判断是否需要为实时业务预留进程；
确定模块（702 ), 用于若所述判断模块判断需要预留进程， 则确定预留进 程用于上行半静态调度；
通信模块（704 ), 用于将所述确定模块所预留的进程的相关信息发送给用 户设备 UE; 指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数据 包。
15、 如权利要求 14所述的基站， 其特征在于， 所述确定模块（702 ) 包括： 随机选择模块（ 7020 ), 用于随机选择至少两个进程， 确定预留所述随机选 择的至少两个进程用于上行半静态调度。
16、 如权利要求 14所述的基站， 其特征在于， 所述确定模块（702 ) 包括： 计算模块（7022 ), 用于根据最大容忍时延以及所述实时业务的半静态调度 周期确定在所述最大容忍时延内的最大需求进程数；
确认子模块（7024 ), 用于根据所述子帧的配置类型确定该配置类型下的最 大相邻进程数；
选择子模块（7026 ), 用于根据所述计算模块确定的所述最大容忍时延内的 最大需求进程数和所述确认子模块确认的最大相邻进程数确定预留的用于上行 半静态调度的进程。
17、 一种通信系统， 其特征在于， 该系统包括基站， 所述基站以可通信方 式同用户设备 UE相连， 当需要传输实时业务时，
所述基站若判断需要为所述实时业务预留进程， 则确定预留进程用于上行 半静态调度； 发送通知消息给用户设备 UE, 所述通知消息中携带所述预留的进 程的相关信息；指示所述用户设备 UE在所述预留的进程对应的上行子帧传输数 据包。
18、 如权利要求 17所述的通信系统， 其特征在于，
所述基站若判断不需要为所述实时业务预留进程， 发送通知消息给所述用 户设备 UE， 所述通知消息中携带无预留进程的信息；
指示所述用户设备 UE在所述实时业务的半静态调度周期对应的上行子帧 传输数据包。
19、 如权利要求 18所述的通信系统， 其特征在于， 所述通知消息为无线资 源控制 RRC信令， 则所述基站用于发送所述无线资源控制 RRC信令给所述用 户设备 UE, 所述无线资源控制 RRC信令携带所述预留的进程的相关信息。
20、 如权利要求 18所述的通信系统， 其特征在于，
所述基站用于通过下行物理控制信道 PDCCH信令指示所述用户设备 UE在 所述预留的进程对应的上行子帧传输数据包。
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