WO2018027674A1 - 传输状态报告装置、方法以及通信系统 - Google Patents

传输状态报告装置、方法以及通信系统 Download PDF

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Publication number
WO2018027674A1
WO2018027674A1 PCT/CN2016/094383 CN2016094383W WO2018027674A1 WO 2018027674 A1 WO2018027674 A1 WO 2018027674A1 CN 2016094383 W CN2016094383 W CN 2016094383W WO 2018027674 A1 WO2018027674 A1 WO 2018027674A1
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Prior art keywords
information
transmission
links
wireless
packet
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PCT/CN2016/094383
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English (en)
French (fr)
Inventor
史玉龙
吴联海
贾美艺
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富士通株式会社
史玉龙
吴联海
贾美艺
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Priority to CN201680087562.1A priority Critical patent/CN109479295A/zh
Priority to PCT/CN2016/094383 priority patent/WO2018027674A1/zh
Publication of WO2018027674A1 publication Critical patent/WO2018027674A1/zh
Priority to US16/253,063 priority patent/US10869213B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1614—Details of the supervisory signal using bitmaps
    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/06—Generation of reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0876—Network utilisation, e.g. volume of load or congestion level
    • H04L43/0894—Packet rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/04—Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a transmission status reporting apparatus, method, and communication system.
  • the 3rd Generation Partnership Project (3GPP) is studying issues related to next-generation wireless communication systems to meet the needs of new services.
  • One of the most important services is Ultra-Reliable and Low-Latency Communications (URLLC).
  • URLLC Ultra-Reliable and Low-Latency Communications
  • This type of service has high transmission delay and reliability requirements.
  • Existing Long Term Evolution (LTE) systems are difficult to meet the requirements of such services.
  • a method that can significantly improve the transmission reliability and reduce the transmission delay is to use the same data packet of the same service to be transmitted simultaneously by using multiple wireless links, and the data can be improved by repeated transmission. Transmission reliability and reduced transmission delay.
  • the repeated transmission under multiple connections usually adopts the 3C architecture of the dual-connectivity technology, that is, the data packet is split into two wireless links in the Packet Data Convergence Protocol (PDCP) layer, and is received.
  • the PDCP layer at the end performs data aggregation and repeated detection.
  • the same PDCP Protocol Data Unit (PDU) is simultaneously distributed to two Radio Link Control (RLC) protocol layers for transmission.
  • the PDCP layer at the receiving end receives only the PDCP PDUs from the first of the two radio links that are successfully transmitted, and discards the duplicate PDCP PDUs.
  • the PDCP layer at the receiving end can receive data packets from the fastest one of the wireless links, thereby reducing the transmission delay.
  • redundant transmission of multiple links also increases the reliability of the link.
  • the inventors have found that although repeated transmission of multiple connections can improve reliability and reduce latency, the utilization of radio resources is low. Generally, in order to further reduce the delay of the URLLC service, multiple connections are heavy. The wireless resources wasted by complex transmissions is worthwhile. However, the reduced latency gain due to multi-connection repetitive transmission is closely related to factors such as link quality and load conditions. If the data rate and signal quality of the two wireless links that are repeatedly transmitted differ greatly, or the scheduling delay is large, the poor quality wireless link contributes less to the data transmission than the quality of the data. For a good single-link transmission, the gain of the reduced delay caused by repeated transmissions becomes lower. In this case, the network needs to weigh the relationship between the waste of radio resources caused by repeated transmissions and the reduction of delay, and then determine whether the multi-connection repeated transmission mode is suitable in the current wireless environment.
  • Embodiments of the present invention provide a transmission status reporting apparatus, method, and communication system. Obtaining a transmission rate between the plurality of wireless links according to the transmission state information of the wireless link of the packet data convergence protocol layer packet and/or the transmission state information of the wireless link transmitting the radio link control layer packet Difference information and/or scheduling delay difference information.
  • a transmission status reporting method is provided, which is applied to a transmitting end that transmits a data packet by using a plurality of wireless links, where the transmission status reporting method includes:
  • transmission rate difference information and/or scheduling delay difference information between the plurality of radio links wherein the transmission rate difference information is based on transmission state information of a radio link of a packet data convergence protocol layer data packet that is successfully transmitted It is obtained that the scheduling delay difference information is obtained based on transmission state information of a radio link that transmits a radio link control layer data packet.
  • a transmission status reporting apparatus configured in a transmitting end that uses a plurality of wireless links to transmit data packets, where the transmission status reporting apparatus includes:
  • a difference obtaining unit that obtains transmission rate difference information and/or scheduling delay difference information between the plurality of wireless links
  • the transmission rate difference information is obtained based on the transmission state information of the radio link of the packet data convergence protocol layer data packet, and the scheduling delay difference information is based on the radio link of the radio link control layer data packet. Obtained by transmitting status information.
  • a transmission status reporting method is provided, which is applied to a receiving end that transmits a data packet by using multiple radio links, where the transmission status reporting method includes:
  • a transmission status reporting apparatus configured to transmit a data packet using a plurality of wireless links, where the transmission status reporting apparatus includes:
  • An information recording unit when receiving the packet data convergence protocol layer data packet sent by the transmitting end by using the multiple radio links, recording, by which wireless link the data packet is successfully transmitted;
  • a status obtaining unit that obtains transmission status information of a wireless link that successfully transmits the data packet according to the recording result
  • An information feedback unit that feeds back to the transmitting end the transmission status information of the wireless link that successfully transmits the data packet, or feeds back the multiple wireless chains obtained based on the transmission status information of the wireless link that successfully transmits the data packet Transmission rate information of the path and/or transmission rate difference information between the plurality of wireless links.
  • a communication system comprising:
  • a transmitting end which obtains transmission rate difference information and/or scheduling delay difference information between the plurality of wireless links; wherein the transmission rate difference information is based on a transmission of the wireless link of the packet data convergence protocol layer data packet of the successfully transmitted packet data Obtained from the status information, the scheduling delay difference information is obtained based on the transmission status information of the radio link transmitting the radio link control layer data packet.
  • the beneficial effects of the embodiments of the present invention are: obtaining a plurality of wireless links according to transmission state information of a wireless link that successfully transmits a PDCP layer data packet and/or transmission state information of a wireless link that transmits an RLC layer data packet Transmission rate difference information and/or scheduling delay difference information. Therefore, the transmitting end can provide an accurate reference basis for determining whether the current network is suitable for repeated transmission, and can better balance the gain and loss between the wasted wireless resources and the reduced delay in the multi-connection repeated transmission mode, and the configuration is more suitable. Data transfer mode or flow control mode.
  • FIG. 1 is a schematic diagram of a transmission status reporting method according to Embodiment 1 of the present invention.
  • FIG. 2 is another schematic diagram of a transmission status reporting method according to Embodiment 1 of the present invention.
  • FIG. 3 is another schematic diagram of a transmission status reporting method according to Embodiment 1 of the present invention.
  • FIG. 4 is another schematic diagram of a transmission status reporting method according to Embodiment 1 of the present invention.
  • FIG. 5 is another schematic diagram of a transmission status reporting method according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a transmission status reporting method according to Embodiment 2 of the present invention.
  • Figure 7 is a schematic diagram of a transmission status reporting apparatus according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic diagram of a difference obtaining unit according to Embodiment 3 of the present invention.
  • FIG. 9 is another schematic diagram of a difference obtaining unit according to Embodiment 3 of the present invention.
  • FIG. 10 is another schematic diagram of a difference obtaining unit according to Embodiment 3 of the present invention.
  • FIG. 11 is another schematic diagram of a difference obtaining unit according to Embodiment 3 of the present invention.
  • Figure 12 is a schematic diagram of a transmission status reporting apparatus according to Embodiment 4 of the present invention.
  • FIG. 13 is a schematic diagram of an information feedback unit according to Embodiment 4 of the present invention.
  • FIG. 14 is another schematic diagram of an information feedback unit according to Embodiment 4 of the present invention.
  • FIG. 15 is another schematic diagram of an information feedback unit according to Embodiment 4 of the present invention.
  • Figure 16 is a schematic diagram of a communication system according to Embodiment 5 of the present invention.
  • Figure 17 is a schematic diagram of a base station according to Embodiment 5 of the present invention.
  • Figure 18 is a schematic diagram of a user equipment according to Embodiment 5 of the present invention.
  • a base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some or all of their functions.
  • the term “base station” will be used herein. Each base station provides communication coverage for a particular geographic area.
  • the term “cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • a mobile station or device may be referred to as a "User Equipment” (UE).
  • UE User Equipment
  • a UE may be fixed or mobile and may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, and the like.
  • the UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, and the like.
  • PDA personal digital assistant
  • the transmitting end can transmit data packets using multiple wireless links between the receiving ends, for example, using the dual connectivity repeated transmission mode described above.
  • the sending end may be a base station and the receiving end is a user equipment, the sending end may also be a user equipment, and the receiving end may be a base station, and the sending end and the receiving end may also be user equipments; the present invention is not limited thereto, and may be based on actual conditions. Determine the specific scenario.
  • Embodiments of the present invention provide a transmission status reporting method, which is applied to a communication system that uses a plurality of wireless links to transmit data packets.
  • 1 is a schematic diagram of a transmission status reporting method according to an embodiment of the present invention, which is described from the transmitting end side. As shown in FIG. 1, the transmission status reporting method includes:
  • Step 101 The transmitting end obtains transmission rate difference information and/or scheduling delay difference information between multiple radio links, where the transmission rate difference information is based on transmission state information of a radio link that successfully transmits a PDCP layer data packet.
  • the scheduling delay difference information is obtained based on the transmission state information of the radio link that sends the RLC layer data packet.
  • the transmission status reporting method may further include:
  • Step 102 The transmitting end determines, according to the transmission rate difference information and/or the scheduling delay difference information, whether to continue to repeatedly transmit the data packet by using the multiple wireless links.
  • whether to cancel the repeated transmission mode of the multi-connection may be determined according to the transmission rate difference information and/or the scheduling delay difference information.
  • the present invention is not limited thereto. For example, it is also possible to determine whether to perform multi-link split transmission or single-link transmission based on the information, and also to perform flow control based on the information, and the like.
  • the transmission state information of the radio link that successfully transmits the PDCP layer data packet can be obtained by the PDCP layer status report fed back by the receiving end, and the transmitting end transmits the radio link status of the PDCP layer data packet successfully. After the information is collected, the transmission rate difference information between the multiple wireless links is obtained.
  • the receiving end may also obtain the transmission rate information of the radio link and/or the transmission rate difference information between the multiple radio links by collecting the transmission state information of the radio link of the PDCP layer data packet.
  • the receiving end feeds back the transmission rate information of the wireless link and/or the transmission rate difference information between the multiple wireless links through the PDCP layer status report, so that the transmitting end can obtain the transmission rate difference information between the multiple wireless links.
  • the receiving end may also obtain the transmission rate information of the radio link and/or the transmission rate difference information between the multiple radio links by collecting the transmission state information of the radio link of the PDCP layer data packet.
  • the receiving end feeds back the transmission rate information of the wireless link and/or the transmission rate difference information between the multiple wireless links through the RRC (Radio Resource Control) layer signaling, so that the transmitting end can obtain multiple wireless chains. Transmission rate difference information between the roads.
  • RRC Radio Resource Control
  • the transmission state information of the radio link that sends the RLC layer data packet may be obtained by sending a status indication by the RLC layer of the transmitting end itself, thereby obtaining scheduling delay difference information between the multiple radio links.
  • the embodiment of the present invention can provide auxiliary information (transmission rate difference information and/or scheduling time between multiple radio links) by configuring a transmission status report such as a PDCP layer status report and/or an RLC layer transmission status indication. Delay the difference information), and then decide whether the multi-connection repeated transmission mode should be configured or cancelled.
  • auxiliary information transmission rate difference information and/or scheduling time between multiple radio links
  • the transmission status information of the wireless link that successfully transmitted the data packet may be included in the PDCP layer status report. For example, which radio link is transmitted by each successfully transmitted PDCP PDU can be indicated in the PDCP layer status report.
  • the transmission status reporting method includes:
  • Step 201 The sending end sends a data packet to the receiving end by using multiple wireless links.
  • the network side configures the current multi-connection transmission to repeat transmission mode (that is, the PDCP layer at the transmitting end can transmit the same PDCP PDU to multiple radio links), or configures the PDCP status report of the multi-connection repeated transmission.
  • the PDCP entity at the receiving end performs the following operations: When storing a PDCP PDU, the RLC entity that delivers the PDCP PDU is recorded, that is, which radio link is successfully transmitted by each PDCP PDU.
  • the radio link is, for example, a Master Cell Group (MCG) link or a Secondary Cell Group (SCG) link.
  • Step 202 The transmitting end receives the PDCP layer status report fed back by the receiving end, where the PDCP layer status report indicates, by which wireless link each successfully transmitted data packet is transmitted.
  • the receiving end when the periodic PDCP layer status report is configured on the network side and the PDCP layer status report period is reached, or the PDCP layer status report of the polling is configured on the network side, and the PDCP layer data received by the receiving end is received.
  • the receiving end When the packet contains a polling indication, the receiving end shall construct a PDCP layer status report.
  • a bit map field such as a bit map field, is allocated, the length is equal to the first lost PDCP SDU (but not included) Starts up to twice the number of PDCP SNs of the last out-of-order PDCP SDU (including the last one), rounded to the next multiple of 8.
  • bit mapping field in the embodiment of the present invention may take the form of a bit mapping, but the present invention is not limited thereto, and other forms may also be adopted.
  • every two bits in a Bitmap correspond to one PDCP SDU. All the bottom layer indications that the PDCP SDUs that have not been received and the PDCP SDUs that have failed to be decompressed are set to "00" in the corresponding area of the Bitmap field; each successful transmission is indicated in the area corresponding to all successfully received PDCP SDUs. Which radio link the PDCP PDU comes from.
  • a successfully transmitted PDCP SDU is delivered by link 1 (such as an MCG link)
  • the corresponding bit of the SDU is set to "01”
  • link 2 such as an SCG chain
  • bit representation method of the present invention is not limited to the above, and other bit representation methods are described. It should also be within the scope of the invention.
  • Step 203 The transmitting end performs statistics on transmission rates of multiple radio links based on the PDCP layer status report.
  • the transmitting end may count the number of PDCP PDUs successfully transmitted through different links.
  • the PDCP layer status report it can be counted that the number of successfully transmitting PDCP PDUs through link 1 (such as an MCG link) is 30, and the number of successfully transmitting PDCP PDUs through link 2 (such as an SCG link) is 3.
  • Step 204 The sending end obtains the transmission rate difference information between the multiple wireless links according to the statistical result.
  • the difference in the number of PDCP PDUs successfully transmitted between different links for example, the above example
  • Step 205 The transmitting end determines, according to the transmission rate difference information, whether to continue to repeatedly transmit data packets by using multiple radio links.
  • the sender can consider that the gain of the repeated transmission mode is small at this time, and the configuration of the repeated transmission mode can be cancelled, and the same PDCP PDU is not repeatedly transmitted by using multiple links; the same data can be transmitted only by using one link with a better transmission rate. package.
  • transmission rate information of the plurality of wireless links and/or transmission rate difference information between the plurality of wireless links may be included in a PDCP layer status report.
  • the number-related information of PDCP PDUs successfully transmitted through different links may be indicated in the PDCP layer status report.
  • FIG. 3 is another schematic diagram of a method for reporting a transmission status according to an embodiment of the present invention. The description is performed on both sides of a transmitting end and a receiving end. As shown in FIG. 3, the method for reporting a transmission status includes:
  • Step 301 The sending end sends a data packet to the receiving end by using multiple wireless links.
  • the network side configures the current multi-connection transmission to be the repetitive transmission mode, or the PDCP layer status report of the multi-connection repetitive transmission is configured.
  • the PDCP layer entity at the receiving end performs the following operations: when storing a PDCP PDU, the RLC layer entity that delivers the PDCP PDU is recorded, that is, which radio link is successfully transmitted by each PDCP PDU.
  • Step 302 The receiving end performs statistics on transmission rates of multiple wireless links.
  • the receiving end can count the number of PDCP PDUs successfully transmitted through different links. For example, the ratio of the number of PDCP PDUs for successful transmission between different links, or the difference in the number of PDCP PDUs for successful transmission between different links can be obtained. Thereby, information about the number of PDCP PDUs successfully transmitted by different links is obtained.
  • Step 303 The receiving end feeds back a PDCP layer status report to the transmitting end, where the PDCP layer status report indicates information about the number of PDCP PDUs successfully transmitted by different links.
  • the receiving end when the periodic PDCP layer status report is configured on the network side and the PDCP layer status report period is reached, or the PDCP layer status report of the polling is configured on the network side, and the PDCP layer data received by the receiving end is received.
  • the receiving end When the packet contains a polling indication, the receiving end shall construct a PDCP layer status report.
  • a bitmap field is allocated with a length equal to the first missing PDCP SDU (but not included) until the last out-of-order PDCP SDU (including the last one)
  • the number of PDCP SNs is doubled and rounded to the next multiple of 8.
  • each bit in the Bitmap corresponds to a PDCP SDU. All of the PDCP SDUs that have not been received by the bottom layer and the PDCP SDUs that have failed to be decompressed may be set to “0” in the corresponding area of the Bitmap field; for other PDCP SDUs, the corresponding area is set to “1”.
  • the PDCP layer status report may include: a number related field indicating the number of data packets successfully transmitted by different wireless links; or a ratio or difference indicating the number of data packets successfully transmitted by different wireless links.
  • a "PDU Ratio Field” is added to the PDCP layer status report to indicate the ratio of the number of PDCP PDUs successfully transmitted over different links.
  • the PDCP layer status report adds a "PDU Number Field” indicating the number of PDCP PDUs successfully transmitted through different links.
  • the "PDU difference value field” is added to the PDCP layer status report, indicating the difference in the number of PDCP PDUs successfully transmitted through different links.
  • bit representation method of the present invention is not limited to the above, and other bit representation methods should also be within the scope of the invention.
  • Step 304 The transmitting end obtains transmission rate difference information between multiple radio links according to the number related information.
  • Step 305 The transmitting end determines, according to the transmission rate difference information, that the data packet is repeatedly transmitted using multiple radio links.
  • the sender can consider that the gain of the repeated transmission mode is small at this time, and the configuration of the repeated transmission mode can be cancelled, and the same PDCP PDU is not repeatedly transmitted by using multiple links; the same data can be transmitted only by using one link with a better transmission rate. package.
  • transmission rate information of the plurality of wireless links and/or transmission rate difference information between the plurality of wireless links may be included in RRC layer signaling.
  • FIG. 4 is another schematic diagram of a transmission status reporting method according to an embodiment of the present invention, which is described from both the transmitting end and the receiving end. As shown in FIG. 4, the transmission status reporting method includes:
  • Step 401 The transmitting end sends a data packet to the receiving end by using multiple wireless links.
  • the network side configures the current multi-connection transmission to be the repetitive transmission mode, or the PDCP layer status report of the multi-connection repetitive transmission is configured.
  • the PDCP layer entity at the receiving end performs the following operations: when storing a PDCP PDU, the RLC layer entity that delivers the PDCP PDU is recorded, that is, which radio link is successfully transmitted by each PDCP PDU.
  • Step 402 The receiving end performs statistics on transmission rates of multiple wireless links.
  • the receiving end can count the number of PDCP PDUs successfully transmitted through different links. For example, the ratio of the number of PDCP PDUs for successful transmission between different links, or the difference in the number of PDCP PDUs for successful transmission between different links can be obtained. Thereby, information about the number of PDCP PDUs successfully transmitted by different links is obtained.
  • Step 403 The receiving end feeds back the RRC layer signaling to the sending end, where the RRC layer signaling includes the transmission rate information of the multiple radio links and/or the transmission rate difference information between the multiple radio links. .
  • the receiving end may indicate to the transmitting end through different chains through dedicated RRC layer signaling.
  • the ratio (or difference) of the number of PDCP PDUs successfully transmitted by the path has been greater than a certain threshold.
  • the receiving end may also indicate the ratio (or difference) of the number of PDCP PDUs successfully transmitted through different links through RRC layer signaling, or the number of PDCP PDUs successfully transmitted through different links.
  • Step 404 The transmitting end obtains transmission rate difference information between multiple radio links based on the RRC layer signaling.
  • Step 405 The transmitting end determines, according to the transmission rate difference information, whether to continue to repeatedly transmit data packets by using multiple radio links.
  • the sender when the sender receives an indication that the ratio of the number of PDCP PDUs sent by the receiving end for successful transmission between different links is greater than a certain threshold value, or the difference in the number of PDCP PDUs successfully transmitted through different links
  • the threshold is greater than a certain threshold
  • the sender can consider that the gain of the repeated transmission mode is small at this time, and the configuration of the repeated transmission mode can be cancelled, and the same PDCP PDU is not repeatedly transmitted by using multiple links; One link transmits the same packet.
  • the transmitting end may be based on The RRC layer signaling obtains a difference in transmission rate between the plurality of radio links, and then determines whether to continue using the plurality of radio links or to transmit the data packets using one radio link based on the difference in the transmission rate.
  • the scheduling delay difference information may be obtained based on transmission state information of a wireless link that transmits an RLC layer data packet.
  • FIG. 5 is another schematic diagram of a transmission status reporting method according to an embodiment of the present invention, showing a case where a transmitting end determines a scheduling delay difference according to an RLC layer transmission status indication.
  • the transmission status reporting method includes:
  • Step 501 When the RLC layer of each radio link submits a data packet, the RLC layer indicates to the PDCP layer, the sending information that the data packet has been sent by the RLC layer;
  • the RLC layer entity of the transmitting end performs the following operations: whenever an RLC PDU is delivered to a lower layer (for example, a Media Access Control (MAC) layer), the RLC layer entity should be an upper layer (for example, a PDCP layer). Indicates the current RLC SDU (ie PDCP PDU) sent.
  • a lower layer for example, a Media Access Control (MAC) layer
  • MAC Media Access Control
  • PDCP layer Indicates the current RLC SDU (ie PDCP PDU) sent.
  • Step 502 The PDCP layer obtains scheduling delay information of the data packet sent by different radio links according to the sending information.
  • the PDCP layer entity at the transmitting end performs the following operations: receiving a transmission status indication of an RLC layer entity of a different link, recording a time when the same PDCP PDU is sent by an RLC layer entity of a different link; and calculating each PDCP The transmission time difference of PDU transmission on different links.
  • the scheduling delay information of one data packet can be obtained by step 502.
  • step 501 and step 502 can be repeatedly performed to obtain scheduling delay information of multiple data packets.
  • Step 503 counting time differences of transmission of multiple data packets on different wireless links
  • Step 504 Obtain scheduling delay difference information between multiple radio links according to the statistical result.
  • the scheduling delay difference between multiple radio links can be obtained according to the statistical result, for example.
  • Step 505 Determine, according to the scheduling delay difference information, whether to continue to repeatedly transmit data packets by using multiple wireless links.
  • the transmitting end can consider that the gain of the repeated transmission mode is small, and the configuration of the repeated transmission mode can be cancelled.
  • the same PDCP PDU is transmitted repeatedly using multiple links.
  • the scheduling delay difference obtained by the embodiments of the present invention can be combined with the transmission rate difference obtained by other means (for example, using the prior art) to determine whether to continue to use multiple wireless links or to transmit data packets using one wireless link. For example, when the average value of the time difference between the RLC layers of different links transmitting the same PDCP PDU is greater than a certain threshold, and/or; when the difference of the wireless link transmission rate of different links is greater than a certain threshold: the transmitting end It can be considered that the gain of the repeated transmission mode is small at this time, and the configuration of the repeated transmission mode can be canceled, and the same PDCP PDU is not repeatedly transmitted by the multi-link.
  • FIGS. 2 to 5 are only illustrative of the embodiments of the present invention, but the present invention is not limited thereto.
  • the order of execution between the various steps can be appropriately adjusted, and other steps can be added or some of the steps can be reduced.
  • Those skilled in the art can appropriately modify the above based on the above contents, and are not limited to the description of the above drawings.
  • the transmission rate between the multiple wireless links is obtained according to the transmission state information of the wireless link that successfully transmits the PDCP layer data packet and/or the transmission state information of the wireless link that transmits the RLC layer data packet. Difference information and/or scheduling delay difference information. Therefore, the transmitting end can provide an accurate reference basis for determining whether the current network is suitable for repeated transmission, and can better balance the gain and loss between the wasted wireless resources and the reduced delay in the multi-connection repeated transmission mode, and the configuration is more suitable. Data transfer mode or flow control mode.
  • Embodiments of the present invention provide a transmission status reporting method, which is applied to a communication system that uses a plurality of wireless links to transmit data packets.
  • the embodiment of the present invention is described from the receiving end, and the same content as that of Embodiment 1 will not be described again.
  • FIG. 6 is a schematic diagram of a transmission status reporting method according to an embodiment of the present invention. As shown in FIG. 6, the transmission status reporting method includes:
  • Step 601 when the receiving end receives the PDCP layer data packet sent by the transmitting end through multiple radio links, Recording which wireless link the data packet was successfully transmitted;
  • Step 602 The receiving end obtains transmission state information of the wireless link that successfully transmits the data packet according to the recording result;
  • Step 602 The receiving end feeds back, to the sending end, the transmission state information of the wireless link that successfully transmits the data packet, or feeds back the multiple wireless chains obtained based on the transmission state information of the wireless link that successfully transmits the data packet. Transmission rate information of the path and/or transmission rate difference information between the plurality of wireless links.
  • the receiving end feeds back the information, so that the sending end obtains the transmission rate difference information and/or the scheduling delay difference information between the multiple wireless links according to the information, thereby determining whether to continue using the Multiple wireless links repeatedly transmit the data packets, or perform flow control, and the like.
  • step 601 may be performed multiple times, that is, the PDCP layer data packet is received multiple times; then, after multiple data packet transmissions, step 602 obtains the transmission state information of the wireless link that successfully transmits the data packet.
  • the receiving end may directly feed back the transmission status information to the transmitting end, where the transmission status information may be carried in the PDCP layer status report, and the receiving end feeds back the PDCP layer status report to the transmitting end.
  • the receiving end may also perform statistics on the transmission rates of the multiple radio links according to the transmission status information, obtain transmission rate information of multiple radio links, and/or transmission rate difference information between multiple radio links, and then This information is carried in the PDCP layer status report and fed back to the sender.
  • the receiving end may also perform statistics on the transmission rates of the multiple radio links according to the transmission status information, obtain transmission rate information of multiple radio links, and/or transmission rate difference information between multiple radio links, and then The information is carried in the RRC layer signaling and fed back to the transmitting end.
  • the transmission status information of the wireless link that successfully transmitted the data packet may be included in the PDCP layer status report.
  • which radio link is transmitted by each successfully transmitted PDCP PDU can be indicated in the PDCP layer status report.
  • the PDCP layer status report may include a bit map field by which one or more bits in the bit map field indicate which wireless link each successfully transmitted data packet is transmitted by.
  • the transmission rate information of the plurality of wireless links and/or the transmission rate difference information between the plurality of wireless links may be included in the PDCP layer status report.
  • the number-related information of PDCP PDUs successfully transmitted through different links may be indicated in the PDCP layer status report.
  • the PDCP layer status report may include a number related field indicating the number of data packets successfully transmitted by different wireless links, or a ratio or difference indicating the number of data packets successfully transmitted by different wireless links.
  • the receiving end may perform statistics on transmission rates of the multiple radio links; and based on statistical results. Obtain information about the wireless link indicating successful transmission of the data packet. The radio link related information is then carried in the PDCP layer status report.
  • transmission rate information of a plurality of wireless links and/or transmission rate difference information between the plurality of wireless links may be included in the RRC layer signaling.
  • the RRC layer signaling may include one or more of the following information: the ratio or the difference of the number of data packets successfully transmitted by different wireless links is greater than a preset threshold; the success is succeeded by different wireless links. The ratio or difference in the number of transmitted packets; the number of packets successfully transmitted by different wireless links.
  • the transmission rate difference information between the plurality of radio links is obtained according to the transmission state information of the radio link that successfully transmits the PDCP layer data packet. Therefore, the transmitting end can provide an accurate reference basis for determining whether the current network is suitable for repeated transmission, and can better balance the gain and loss between the wasted wireless resources and the reduced delay in the multi-connection repeated transmission mode, and the configuration is more suitable. Data transfer mode or flow control mode.
  • the embodiment of the present invention provides a transmission status reporting apparatus, which is configured to transmit a data packet to a receiving end by using multiple radio links.
  • a transmission status reporting apparatus which is configured to transmit a data packet to a receiving end by using multiple radio links.
  • the same content of the embodiment of the present invention is not described herein.
  • FIG. 7 is a schematic diagram of a transmission status reporting apparatus according to an embodiment of the present invention. As shown in FIG. 7, the transmission status reporting apparatus 700 includes:
  • a difference obtaining unit 701 which obtains transmission rate difference information and/or scheduling delay difference information between the plurality of wireless links;
  • the transmission rate difference information is obtained based on transmission state information of a radio link that successfully transmits a PDCP layer data packet, and the scheduling delay difference information is obtained based on transmission state information of a radio link that transmits an RLC layer data packet.
  • the transmission status reporting apparatus 700 may further include:
  • the mode determining unit 702 determines whether to continue to repeatedly transmit the data packet using the plurality of wireless links based on the transmission rate difference information and/or the scheduling delay difference information.
  • the transmission status information of the wireless link that successfully transmits the data packet may be included in the PDCP layer status report fed back by the receiving end.
  • FIG. 8 is a schematic diagram of a difference obtaining unit 701 according to an embodiment of the present invention, as shown in FIG. 701 can include:
  • the report receiving unit 801 receives the PDCP layer status report fed back by the receiving end, where the PDCP layer status report includes the transmission status information of the wireless link that successfully transmits the data packet;
  • a rate statistics unit 802 that counts transmission rates of the plurality of wireless links based on the PDCP layer status report
  • the information obtaining unit 803 obtains transmission rate difference information between the plurality of wireless links according to the statistical result.
  • the PDCP layer status report may include a bit mapping field, by which one or more bits in the bit mapping field indicate which wireless link each successfully transmitted data packet is transmitted by.
  • the transmission rate information of the plurality of wireless links and/or the transmission rate difference information between the plurality of wireless links may be included in the PDCP layer status report fed back by the receiving end.
  • FIG. 9 is a schematic diagram of a difference obtaining unit 701 according to an embodiment of the present invention. As shown in FIG. 9, the difference obtaining unit 701 may include:
  • a report receiving unit 901 which receives a PDCP layer status report fed back by the receiving end, where the PDCP layer status report includes transmission rate information of multiple radio links and/or transmission rate difference information between multiple radio links;
  • the information obtaining unit 902 obtains transmission rate difference information between the plurality of wireless links according to the PDCP layer status report.
  • the PDCP layer status report may include: a number related field, carrying the number of data packets successfully transmitted by different wireless links, and/or carrying a ratio of the number of data packets successfully transmitted by different wireless links. Or difference.
  • the transmission rate information of the multiple radio links and/or the transmission rate difference information between the multiple radio links may be included in the RRC layer signaling fed back by the receiving end.
  • FIG. 10 is a schematic diagram of a difference obtaining unit 701 according to an embodiment of the present invention. As shown in FIG. 10, the difference obtaining unit 701 may include:
  • the signaling receiving unit 1001 receives the RRC layer signaling that is fed back by the receiving end, where the RRC layer signaling includes transmission rate information of the multiple radio links and/or the multiple radio links. Transmission rate difference information;
  • the information obtaining unit 1002 obtains the transmission rate difference information between the plurality of radio links according to the RRC layer signaling.
  • the RRC layer signaling may include one or more of the following information: The ratio or difference of the number or the difference of the number of the data packets successfully transmitted by the line link is greater than a preset threshold; the ratio or difference of the number of the data packets successfully transmitted by different wireless links; by different wireless links The number of packets successfully transmitted.
  • the scheduling delay difference information may be obtained based on transmission state information of a wireless link transmitting the RLC layer data packet.
  • FIG. 11 is a schematic diagram of a difference obtaining unit 701 according to an embodiment of the present invention. As shown in FIG. 11, the difference obtaining unit 701 may include:
  • An information indicating unit 1101 when the RLC layer of each radio link submits the data packet, indicates to the PDCP layer, the transmission information that the data packet has been sent by the RLC layer;
  • the delay obtaining unit 1102 is configured by the PDCP layer to obtain scheduling delay information for transmitting the data packet by using different radio links according to the sending information.
  • the difference obtaining unit 701 may further include:
  • the information obtaining unit 1104 obtains scheduling delay difference information between the plurality of wireless links according to the statistical result.
  • the transmission rate between the multiple wireless links is obtained according to the transmission state information of the wireless link that successfully transmits the PDCP layer data packet and/or the transmission state information of the wireless link that transmits the RLC layer data packet. Difference information and/or scheduling delay difference information. Therefore, the transmitting end can provide an accurate reference basis for determining whether the current network is suitable for repeated transmission, and can better balance the gain and loss between the wasted wireless resources and the reduced delay in the multi-connection repeated transmission mode, and the configuration is more suitable. Data transfer mode or flow control mode.
  • the embodiment of the present invention provides a transmission status reporting apparatus, which is configured to transmit a data packet to a receiving end by using multiple radio links.
  • a transmission status reporting apparatus which is configured to transmit a data packet to a receiving end by using multiple radio links.
  • the same content of the embodiment of the present invention is not described herein.
  • FIG. 12 is a schematic diagram of a transmission status reporting apparatus according to an embodiment of the present invention. As shown in FIG. 12, the transmission status reporting apparatus 1200 includes:
  • Information recording unit 1201 which transmits PDCP layers transmitted through the plurality of radio links at the receiving and transmitting end According to the packet, record which wireless link is successfully transmitted by the data packet;
  • a status obtaining unit 1202 which obtains transmission status information of a wireless link that successfully transmits a data packet according to the recording result;
  • the transmission status information of the wireless link that successfully transmits the data packet may be included in the PDCP layer status report fed back by the receiving end.
  • FIG. 13 is a schematic diagram of an information feedback unit 1203 according to an embodiment of the present invention. As shown in FIG. 13, the information feedback unit 1203 may include:
  • the report sending unit 1301 feeds back a PDCP layer status report to the sending end, where the PDCP layer status report includes transmission status information of a wireless link that successfully transmits the data packet.
  • the PDCP layer status report can include a bit map field by which one or more bits in the bit map field indicate which wireless link each successfully transmitted data packet is transmitted by.
  • the transmission rate information of the plurality of wireless links and/or the transmission rate difference information between the plurality of wireless links may be included in the PDCP layer status report fed back by the receiving end.
  • FIG. 14 is a schematic diagram of an information feedback unit 1203 according to an embodiment of the present invention. As shown in FIG. 14, the information feedback unit 1203 may include:
  • a rate statistics unit 1401 that counts transmission rates of the plurality of wireless links; and obtains transmission rate information of the plurality of wireless links and/or transmission between the plurality of wireless links based on a statistical result Rate difference information;
  • a report sending unit 1402 which feeds back a PDCP layer status report to the sending end, where the PDCP layer status report includes transmission rate information of the multiple wireless links and/or between the multiple wireless links Transmission rate difference information.
  • the PDCP layer status report may include: a number related field, carrying the number of data packets successfully transmitted by different wireless links, and/or carrying a ratio of the number of data packets successfully transmitted by different wireless links or Difference.
  • the transmission rate information of the multiple radio links and/or the transmission rate difference information between the multiple radio links may be included in the RRC layer signaling fed back by the receiving end.
  • FIG. 15 is a schematic diagram of an information feedback unit 1203 according to an embodiment of the present invention. As shown in FIG. 15, the information feedback unit 1203 may include:
  • a rate statistics unit 1501 that counts transmission rates of the plurality of wireless links; and obtains transmission rate information of the plurality of wireless links and/or transmission between the plurality of wireless links based on a statistical result Rate difference information;
  • a signaling sending unit 1502 which feeds back RRC layer signaling to the sending end, where the RRC layer signaling includes transmission rate information of the multiple wireless links and/or between the multiple wireless links Transmission rate difference information.
  • the RRC layer signaling may include one or more of the following information: the ratio or the difference of the number of data packets successfully transmitted by different wireless links is greater than a preset threshold; The ratio or difference in the number of packets successfully transmitted by the road; the number of packets successfully transmitted by different wireless links.
  • the transmission rate difference information between the plurality of radio links is obtained according to the transmission state information of the radio link that successfully transmits the PDCP layer data packet. Therefore, the transmitting end can provide an accurate reference basis for determining whether the current network is suitable for repeated transmission, and can better balance the gain and loss between the wasted wireless resources and the reduced delay in the multi-connection repeated transmission mode, and the configuration is more suitable. Data transfer mode or flow control mode.
  • the embodiment of the present invention further provides a communication system, and the same contents as those of Embodiments 1 to 4 are not described herein.
  • the communication system transmits data packets using multiple wireless links, which may include:
  • a transmitting end which obtains transmission rate difference information and/or scheduling delay difference information between the plurality of wireless links; wherein the transmission rate difference information is obtained based on the transmission state information of the wireless link that successfully transmits the PDCP layer data packet
  • the scheduling delay difference information is obtained based on transmission state information of a radio link that transmits an RLC layer data packet.
  • the communication system may further include:
  • a receiving end when receiving the PDCP layer data packet sent by the sending end by using the multiple wireless links, recording which wireless link is successfully transmitted by the data packet; obtaining a wireless chain for successfully transmitting the data packet according to the recording result Transmission status information of the path; and transmission status information of the wireless link that feeds back the successfully transmitted data packet, or feedback of the transmission of the plurality of wireless links based on the transmission status information of the wireless link that successfully transmitted the data packet Rate information and/or transmission rate difference information between the plurality of wireless links.
  • the communication system 1600 may include a base station 1601 and a user equipment 1602.
  • the base station 1601 may be configured with the transmission status reporting device 700 as described in Embodiment 3; the user equipment 1602 may be configured with the transmission status reporting device 1200 as described in Embodiment 4.
  • the embodiment of the present invention further provides a sending end, which may be a base station or a user equipment, but the invention is not limited thereto, and may be other network devices.
  • a sending end which may be a base station or a user equipment, but the invention is not limited thereto, and may be other network devices.
  • the following takes a base station as an example for description.
  • FIG. 17 is a schematic diagram showing the structure of a base station according to an embodiment of the present invention.
  • base station 1700 can include a central processing unit (CPU) 200 and memory 210; and memory 210 is coupled to central processing unit 200.
  • the memory 210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 200.
  • the central processing unit 200 can be configured to implement the transmission status reporting method described in Embodiment 1.
  • the central processing unit 200 may be configured to perform control of obtaining transmission rate difference information and/or scheduling delay difference information between a plurality of wireless links; wherein the transmission rate difference information is based on successfully transmitting PDCP layer data Obtained from the transmission status information of the radio link of the packet, and the scheduling delay difference information is obtained based on the transmission status information of the radio link transmitting the RLC layer data packet.
  • the base station 1700 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the base station 1700 also does not have to include all of the components shown in FIG. 17; in addition, the base station 1700 may also include components not shown in FIG. 17, and reference may be made to the prior art.
  • the embodiment of the present invention further provides a receiving end, which may be, for example, a user equipment or a base station, but the present invention is not limited thereto, and may be other network devices.
  • a receiving end which may be, for example, a user equipment or a base station, but the present invention is not limited thereto, and may be other network devices.
  • the following uses the user equipment as an example for description.
  • FIG. 18 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user device 1800 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100.
  • the central processing unit 100 may be configured to implement the transmission status reporting method described in Embodiment 2.
  • the central processing unit 100 may be configured to perform control of: when receiving a PDCP layer data packet transmitted by the transmitting end over a plurality of wireless links, which wireless link is successfully transmitted by the data packet; Transmission status information of the wireless link that successfully transmitted the data packet; and feedback of the successfully transmitted data packet Transmission status information of the wireless link, or feedback of transmission rate information of the plurality of wireless links and/or the plurality of wireless links obtained based on transmission status information of the wireless link that successfully transmitted the data packet Transmission rate difference information between.
  • the user equipment 1800 may further include: a communication module 110, an input unit 120, a display 160, and a power source 170.
  • the functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1800 does not have to include all the components shown in FIG. 18, and the above components are not required; in addition, the user equipment 1800 may further include components not shown in FIG. There are technologies.
  • the embodiment of the present invention further provides a transmitting end, which is exemplified by a user equipment, and the configuration of the user equipment may refer to FIG. 18.
  • the central processing unit 100 may be configured to perform control of obtaining transmission rate difference information and/or scheduling delay difference information between the plurality of wireless links, wherein the transmission rate difference information is based on successfully transmitting the PDCP layer data packet The transmission status information of the wireless link is obtained, and the scheduling delay difference information is obtained based on the transmission status information of the wireless link that transmits the RLC layer data packet.
  • the embodiment of the present invention further provides a receiving end, and the base station is taken as an example.
  • the structure of the base station can be referred to FIG.
  • the central processing unit 200 can be configured to perform the following control: when receiving the PDCP layer data packet sent by the transmitting end through multiple wireless links, record which wireless link is successfully transmitted by the data packet; and succeed according to the recording result. Transmitting status information of a wireless link transmitting a data packet; and transmitting transmission status information of a wireless link that successfully transmits the data packet, or feeding back the plurality of transmission status information based on the wireless link of the data packet successfully transmitted Transmission rate information of the wireless link and/or transmission rate difference information between the plurality of wireless links.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a transmission status reporting device or a transmitting end, the program causes the transmission status reporting device or the transmitting end to perform the method described in Embodiment 1 Transmission status reporting method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the transmission status reporting device or the transmitting end to execute the transmission status reporting method described in Embodiment 1.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a transmission status reporting device or a receiving end, the program causes the transmission status reporting device or the receiving end to perform the method described in Embodiment 2 Transmission status reporting method.
  • An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer is The reading program causes the transmission status reporting device or the receiving end to execute the transmission status reporting method described in Embodiment 2.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the information transmission method/device described in connection with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIG. 7 and/or one or more combinations of functional block diagrams may correspond to various software of a computer program flow.
  • Modules can also correspond to individual hardware modules.
  • These software modules may correspond to the respective steps shown in FIG. 1, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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Abstract

一种传输状态报告装置、方法以及通信系统。所述传输状态报告方法包括：获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中传输速率差异信息基于成功传输PDCP层数据包的无线链路的传输状态信息而得到，调度时延差异信息基于发送RLC层数据包的无线链路的传输状态信息而得到。由此，可以为发送端判断当前网络是否适合进行重复传输提供准确的参考依据，可以更好地权衡多连接重复传输模式下浪费的无线资源和减少的时延之间的得失，配置更合适的数据传输模式或者流量控制模式。

Description

传输状态报告装置、方法以及通信系统 技术领域
本发明涉及通信技术领域，特别涉及一种传输状态报告装置、方法以及通信系统。
背景技术
第3代合作伙伴计划(3GPP，3rd Generation Partnership Project)正在研究下一代无线通信系统的相关议题来满足新业务的需求。其中一种重要的业务是超可靠性低时延通信(URLLC，Ultra-Reliable and Low-Latency Communications)。这类业务有很高的传输时延和可靠性要求。现有长期演进(LTE，Long Term Evolution)系统很难满足该类业务的要求。
在第五代(5G)通信的研究中，一种可以显著提高传输可靠性并减低传输时延的方法是使用多个无线链路同时传输同一个业务的相同数据包，通过重复传输可以提高数据传输的可靠性并降低传输时延。
多连接下的重复传输通常采用双连接(dual-connectivity)技术的3C构架，即数据包在分组数据汇聚协议(PDCP，Packet Data Convergence Protocol)层分裂到两个无线链路中传输，并在接收端的PDCP层进行数据的汇聚和重复检测。采用重复传输模式时，同一个PDCP协议数据单元(PDU，Protocol Data Unit)会同时被分发到两个无线链路控制(RLC，Radio Link Control)协议层中传输。接收端的PDCP层只接收来自两个无线链路中第一个成功传输的PDCP PDU，而丢弃重复的PDCP PDU。
这样，接收端的PDCP层可以从最快的一个无线链路中接收数据包，从而降低了传输时延。此外，多链路的冗余传输也提高了链路的可靠性。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
但是，发明人发现：多连接的重复传输虽然可以提高可靠性并降低时延，但是无线资源的利用率较低。通常情况下，为了进一步降低URLLC业务的时延，多连接重 复传输所浪费的无线资源是值得的。然而，多连接重复传输带来的降低时延的增益与链路质量和负载情况等因素密切有关。如果进行重复传输的两个无线链路的数据速率和信号质量相差较大，或者调度时延相差较大，则质量较差的无线链路对数据传输的贡献较低，相比于采用质量较好的单链路传输，重复传输带来的降低时延的增益就会变低。这种情况下，网络需要权衡重复传输造成的无线资源浪费与减少时延之间的关系，进而决定在当前的无线环境下多连接重复传输模式是否适合。
然而现有双连接模式中，关于链路质量和网络负载等情况的报告并不能准确地反映多连接重复传输时的数据包时延增益情况。例如，当前的网络负载报告仅能反映服务质量等级标识(QCI，QoS Class Identifier)级别的情况，并不十分精确。相同QCI参数的无线链路之间仍然可能存在较大的调度时延差异和链路质量差异，进而导致多连接重复传输的增益显著下降。也就是说，即使具有相同QCI参数的无线链路之间也不一定适合进行多连接重复传输。
本发明实施例提供一种传输状态报告装置、方法以及通信系统。根据成功传输分组数据会聚协议层数据包的无线链路的传输状态信息和/或发送无线链路控制层数据包的无线链路的传输状态信息，来获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息。
根据本发明实施例的第一个方面，提供一种传输状态报告方法，应用于使用多个无线链路传输数据包的发送端，所述传输状态报告方法包括：
获得所述多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中，所述传输速率差异信息基于成功传输分组数据会聚协议层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送无线链路控制层数据包的无线链路的传输状态信息而得到。
根据本发明实施例的第二个方面，提供一种传输状态报告装置，配置于使用多个无线链路传输数据包的发送端中，所述传输状态报告装置包括：
差异获得单元，其获得所述多个无线链路之间的传输速率差异信息和/或调度时延差异信息；
其中，所述传输速率差异信息基于成功传输分组数据会聚协议层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送无线链路控制层数据包的无线链路的传输状态信息而得到。
根据本发明实施例的第三个方面，提供一种传输状态报告方法，应用于使用多个无线链路传输数据包的接收端，所述传输状态报告方法包括：
在接收发送端通过所述多个无线链路发送的分组数据会聚协议层数据包时，记录所述数据包由哪个无线链路成功传输；
根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及
向所述发送端反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
根据本发明实施例的第四个方面，提供一种传输状态报告装置，配置于使用多个无线链路传输数据包的接收端，所述传输状态报告装置包括：
信息记录单元，其在接收发送端通过所述多个无线链路发送的分组数据会聚协议层数据包时，记录所述数据包由哪个无线链路成功传输；
状态获得单元，其根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及
信息反馈单元，其向所述发送端反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
根据本发明实施例的第五个方面，提供一种通信系统，所述通信系统包括：
发送端，其获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中，所述传输速率差异信息基于成功传输分组数据会聚协议层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送无线链路控制层数据包的无线链路的传输状态信息而得到。
本发明实施例的有益效果在于：根据成功传输PDCP层数据包的无线链路的传输状态信息和/或发送RLC层数据包的无线链路的传输状态信息，来获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息。由此，可以为发送端判断当前网络是否适合进行重复传输提供准确的参考依据，可以更好地权衡多连接重复传输模式下浪费的无线资源和减少的时延之间的得失，配置更合适的数据传输模式或者流量控制模式。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原 理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本发明实施例1的传输状态报告方法的示意图；
图2是本发明实施例1的传输状态报告方法的另一示意图；
图3是本发明实施例1的传输状态报告方法的另一示意图；
图4是本发明实施例1的传输状态报告方法的另一示意图；
图5是本发明实施例1的传输状态报告方法的另一示意图；
图6是本发明实施例2的传输状态报告方法的示意图；
图7是本发明实施例3的传输状态报告装置的示意图；
图8是本发明实施例3的差异获得单元的示意图；
图9是本发明实施例3的差异获得单元的另一示意图；
图10是本发明实施例3的差异获得单元的另一示意图；
图11是本发明实施例3的差异获得单元的另一示意图；
图12是本发明实施例4的传输状态报告装置的示意图；
图13是本发明实施例4的信息反馈单元的示意图；
图14是本发明实施例4的信息反馈单元的另一示意图；
图15是本发明实施例4的信息反馈单元的另一示意图；
图16是本发明实施例5的通信系统的示意图；
图17是本发明实施例5的基站的示意图；
图18是本发明实施例5的用户设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请中，基站可以被称为接入点、广播发射机、节点B、演进节点B(eNB)等，并且可以包括它们的一些或所有功能。在文中将使用术语“基站”。每个基站对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请中，移动站或设备可以被称为“用户设备”(UE，User Equipment)。UE可以是固定的或移动的，并且也可以称为移动台、终端、接入终端、用户单元、站等。UE可以是蜂窝电话、个人数字助理(PDA)、无线调制解调器、无线通信设备、手持设备、膝上型计算机、无绳电话等。
在本实施例中，发送端可接收端之间可以使用多个无线链路传输数据包，例如使用前述的双连接重复传输模式。其中，发送端可以是基站而接收端是用户设备，发送端也可以是用户设备而接收端是基站，此外发送端和接收端还可以都是用户设备；本发明不限于此，可以根据实际情况确定具体的场景。
实施例1
本发明实施例提供一种传输状态报告方法，应用于使用多个无线链路传输数据包的通信系统中。图1是本发明实施例的传输状态报告方法的示意图，从发送端一侧进行说明，如图1所示，所述传输状态报告方法包括：
步骤101，发送端获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中，所述传输速率差异信息基于成功传输PDCP层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送RLC层数据包的无线链路的传输状态信息而得到。
如图1所示，所述传输状态报告方法还可以包括：
步骤102，发送端基于所述传输速率差异信息和/或调度时延差异信息，确定是否继续使用所述多个无线链路重复传输所述数据包。
在本实施例中，可以根据传输速率差异信息和/或调度时延差异信息确定是否取消多连接的重复传输模式。但本发明不限于此，例如还可以根据这些信息确定是否进行多链路split传输或者单链路传输，此外还可以根据这些信息进行流量控制，等等。
以下将以确定是否继续使用多个无线链路重复传输数据包为例进行说明。
在本实施例中，成功传输PDCP层数据包的无线链路的传输状态信息可以通过接收端反馈的PDCP层状态报告而获得，发送端对该成功传输PDCP层数据包的无线链路的传输状态信息进行统计后得到多个无线链路之间的传输速率差异信息。
或者，也可以由接收端对该成功传输PDCP层数据包的无线链路的传输状态信息进行统计后得到无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息，接收端通过PDCP层状态报告反馈无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息，由此发送端可以得到多个无线链路之间的传输速率差异信息。
或者，也可以由接收端对该成功传输PDCP层数据包的无线链路的传输状态信息进行统计后得到无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息，接收端通过无线资源控制(RRC，Radio Resource Control)层信令反馈无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息，由此发送端可以得到多个无线链路之间的传输速率差异信息。
或者，发送RLC层数据包的无线链路的传输状态信息可以通过发送端本身的RLC层发送状态指示而获得，进而获得多个无线链路之间的调度时延差异信息。
由此，本发明实施例通过配置PDCP层状态报告和/或RLC层发送状态指示等传输状态报告，可以为网络提供辅助信息(多个无线链路之间的传输速率差异信息和/或调度时延差异信息)，进而决定是否应该配置或取消多连接的重复传输模式。
以下从PDCP层和/或RLC层的角度，分别对上述情况进行示意性说明。
在一个实施方式中，可以在PDCP层状态报告中包括成功传输数据包的无线链路的传输状态信息。例如，可以在PDCP层状态报告中指示每个成功传输的PDCP PDU由哪个无线链路传输。
图2是本发明实施例的传输状态报告方法的另一示意图，从发送端和接收端两侧 进行说明，如图2所示，所述传输状态报告方法包括：
步骤201，发送端通过多个无线链路向接收端发送数据包；
在本实施方式中，当网络侧配置当前多连接传输为重复传输模式(即发送端PDCP层可以将相同的PDCP PDU发送到多个无线链路)，或者配置了多连接重复传输的PDCP状态报告时。接收端的PDCP实体进行如下操作：当存储某个PDCP PDU时，记录递交该PDCP PDU的RLC实体，即记录每个PDCP PDU由哪个无线链路成功传输。该无线链路例如是主小区组(MCG，Master Cell Group)链路或从小区组(SCG，Secondary Cell Group)链路。
步骤202，发送端接收该接收端反馈的PDCP层状态报告；其中该PDCP层状态报告中指示每个成功传输的数据包由哪个无线链路传输。
在本实施方式中，当网络侧配置了周期性的PDCP层状态报告，且到达PDCP层状态报告周期时；或者网络侧配置了轮询的PDCP层状态报告，且接收端收到的PDCP层数据包中包含轮询指示时，接收端应该构造PDCP层状态报告。
例如，如果至少有一个PDCP服务数据单元(SDU，Service Data Unit)被存储，则分配一个比特映射字段，例如比特映射(bitmap)字段，长度等于从第一个丢失的PDCP SDU(但不包括)开始直到最后一个失序的PDCP SDU(包含最后一个)的PDCP SN个数的两倍，四舍五入到下一个8的倍数。
在本实施方式中，可以由所述比特映射字段中的一个或多个比特指示每个被成功传输的数据包由哪个无线链路传输。值得注意的是，本发明实施例中的比特映射字段可以采用比特映射的形式，但本发明不限于此，还可以采用其他的形式。
例如，Bitmap中每两个比特对应一个PDCP SDU。可以将所有底层指示还未接收到的PDCP SDU以及任意解压缩失败的PDCP SDU在Bitmap字段中对应的区域置为“00”；在所有成功接收到的PDCP SDU对应的区域中指示每个成功传输的PDCP PDU来自哪个无线链路。
例如如果某个成功传输的PDCP SDU由链路1(如MCG链路)递交，则将该SDU对应的比特置为“01”，如果某个成功传输的PDCP SDU由链路2(如SCG链路)递交，则将该SDU对应的比特置为“10”。
值得注意的是，以上仅对未成功接收的SDU和来自不同链路的SDU的比特表示进行了示意性说明，但本发明的比特表示方法不限定于以上所述，其他比特表示方法 也应在本发明的范畴内。
步骤203，发送端基于PDCP层状态报告对多个无线链路的传输速率进行统计；
在本实施方式中，发送端在收到接收端发送的多连接重复传输模式的PDCP层状态报告后，可以统计通过不同链路成功传输的PDCP PDU数目。
例如，根据PDCP层状态报告可以统计出通过链路1(如MCG链路)成功传输PDCP PDU的数目为30，通过链路2(如SCG链路)成功传输PDCP PDU的数目为3。
步骤204，发送端根据统计结果获得多个无线链路之间的传输速率差异信息。
例如，可以获得不同链路之间的成功传输的PDCP PDU数目的比值(例如上述例子为30/3＝10)，或者不同链路之间的成功传输的PDCP PDU数目的差值(例如上述例子为30-3＝27)。
步骤205，发送端基于所述传输速率差异信息确定是否继续使用多个无线链路重复传输数据包。
例如，当不同链路之间的成功传输的PDCP PDU数目的比值大于某一门限值(预设阈值)时，或者通过不同链路成功传输的PDCP PDU数目的差值大于某个门限时，发送端可以认为此时重复传输模式的增益较小，可以取消重复传输模式的配置，不再采用多链路重复传输相同的PDCP PDU；可以仅使用传输速率较好的一个链路传输相同的数据包。
在另一个实施方式中，可以在PDCP层状态报告中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。例如，可以在PDCP层状态报告中指示通过不同链路成功传输的PDCP PDU的数目相关信息。
图3是本发明实施例的传输状态报告方法的另一示意图，从发送端和接收端两侧进行说明，如图3所示，所述传输状态报告方法包括：
步骤301，发送端通过多个无线链路向接收端发送数据包；
在本实施方式中，当网络侧配置当前多连接传输为重复传输模式，或者配置了多连接重复传输的PDCP层状态报告时。接收端的PDCP层实体进行如下操作：当存储某个PDCP PDU时，记录递交该PDCP PDU的RLC层实体，即记录每个PDCP PDU由哪个无线链路成功传输。
步骤302，接收端对多个无线链路的传输速率进行统计；
在本实施方式中，接收端可以统计通过不同链路成功传输的PDCP PDU数目。例如，可以获得不同链路之间的成功传输的PDCP PDU数目的比值，或者不同链路之间的成功传输的PDCP PDU数目的差值。由此，获得不同链路成功传输的PDCP PDU的数目相关信息。
步骤303，接收端向发送端反馈PDCP层状态报告；其中该PDCP层状态报告中指示不同链路成功传输的PDCP PDU的数目相关信息。
在本实施方式中，当网络侧配置了周期性的PDCP层状态报告，且到达PDCP层状态报告周期时；或者网络侧配置了轮询的PDCP层状态报告，且接收端收到的PDCP层数据包中包含轮询指示时，接收端应该构造PDCP层状态报告。
例如，如果至少有一个PDCP SDU被存储，则分配一个比特映射(bitmap)字段，长度等于从第一个丢失的PDCP SDU(但不包括)开始直到最后一个失序的PDCP SDU(包含最后一个)的PDCP SN个数的两倍，四舍五入到下一个8的倍数。
例如，Bitmap中每个比特对应一个PDCP SDU。可以将所有底层指示还未接收到的PDCP SDU以及任意解压缩失败的PDCP SDU在Bitmap字段中对应的区域置为“0”；对于其他的PDCP SDU，对应的区域置为“1”。
在本实施方式中，PDCP层状态报告可以包括：数目相关字段，表示由不同无线链路成功传输的数据包的数目；或者表示由不同无线链路成功传输的数据包的数目的比值或差值。
例如，PDCP层状态报告中增加“PDU比值字段”，表示通过不同链路成功传输的PDCP PDU数目的比值。或者，PDCP层状态报告中增加“PDU数量字段”，表示通过不同链路成功传输的PDCP PDU数目值。或者，PDCP层状态报告中增加“PDU差值字段”，表示通过不同链路成功传输的PDCP PDU数目的差值。
值得注意的是，以上仅对未成功接收的SDU和来自不同链路的SDU的比特表示进行了示意性说明，但本发明的比特表示方法不限定于以上所述，其他比特表示方法也应在本发明的范畴内。
步骤304，发送端根据该数目相关信息，可以获得多个无线链路之间的传输速率差异信息。
步骤305，发送端基于所述传输速率差异信息确定是继续使用多个无线链路重复传输数据包。
例如，当不同链路之间的成功传输的PDCP PDU数目的比值大于某一门限值(预设阈值)时，或者通过不同链路成功传输的PDCP PDU数目的差值大于某个门限时，发送端可以认为此时重复传输模式的增益较小，可以取消重复传输模式的配置，不再采用多链路重复传输相同的PDCP PDU；可以仅使用传输速率较好的一个链路传输相同的数据包。
在另一个实施方式中，可以在RRC层信令中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
图4是本发明实施例的传输状态报告方法的另一示意图，从发送端和接收端两侧进行说明，如图4所示，所述传输状态报告方法包括：
步骤401，发送端通过多个无线链路向接收端发送数据包；
在本实施方式中，当网络侧配置当前多连接传输为重复传输模式，或者配置了多连接重复传输的PDCP层状态报告时。接收端的PDCP层实体进行如下操作：当存储某个PDCP PDU时，记录递交该PDCP PDU的RLC层实体，即记录每个PDCP PDU由哪个无线链路成功传输。
步骤402，接收端对多个无线链路的传输速率进行统计；
在本实施方式中，接收端可以统计通过不同链路成功传输的PDCP PDU数目。例如，可以获得不同链路之间的成功传输的PDCP PDU数目的比值，或者不同链路之间的成功传输的PDCP PDU数目的差值。由此，获得不同链路成功传输的PDCP PDU的数目相关信息。
步骤403，接收端向发送端反馈RRC层信令；其中该RRC层信令中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
在本实施方式中，当通过不同链路成功传输的PDCP PDU数目的比值(或差值)大于某一个门限值时，接收端可以通过专用的RRC层信令，向发送端指示通过不同链路成功传输的PDCP PDU数目的比值(或差值)已经大于某一门限值。
此外，本实施方式中，接收端也可以通过RRC层信令指示通过不同链路成功传输的PDCP PDU数目的比值(或差值)，或者通过不同链路成功传输的PDCP PDU的数目。
步骤404，发送端基于该RRC层信令，可以获得多个无线链路之间的传输速率差异信息。
步骤405，发送端基于该传输速率差异信息确定是否继续使用多个无线链路重复传输数据包。
例如，发送端在收到接收端发送的关于不同链路之间的成功传输的PDCP PDU数目的比值大于某一门限值的指示时，或通过不同链路成功传输的PDCP PDU数目的差值大于某个门限值时，发送端可以认为此时重复传输模式的增益较小，可以取消重复传输模式的配置，不再采用多链路重复传输相同的PDCP PDU；可以仅使用传输速率较好的一个链路传输相同的数据包。
在本实施方式中，如果RRC层信令中指示了通过不同链路成功传输的PDCP PDU数目的比值(或差值)，或者通过不同链路成功传输的PDCP PDU的数目；则发送端可以根据该RRC层信令获得多个无线链路之间的传输速率差异，然后基于该传输速率差异确定是继续使用多个无线链路还是使用一个无线链路传输数据包。
在另一个实施方式中，可以基于发送RLC层数据包的无线链路的传输状态信息而得到所述调度时延差异信息。
图5是本发明实施例的传输状态报告方法的另一示意图，示出了发送端根据RLC层发送状态指示确定调度时延差异的情况。如图5所示，所述传输状态报告方法包括：
步骤501，在每一无线链路的RLC层递交数据包时，RLC层向PDCP层指示所述数据包已经由RLC层发送的发送信息；
在本实施方式中，发送端的RLC层实体进行如下操作：每当向下层(例如介质访问控制(MAC，Media Access Control)层)递交一个RLC PDU时，RLC层实体应向上层(例如PDCP层)指示当前发送的RLC SDU(即PDCP PDU)的情况。
步骤502，PDCP层根据发送信息获得不同无线链路发送数据包的调度时延信息。
在本实施方式中，发送端的PDCP层实体进行如下操作：接收不同链路的RLC层实体的发送状态指示，记录同一个PDCP PDU在不同链路的RLC层实体发送的时刻；以及计算每个PDCP PDU在不同链路传输的发送时间差。
通过步骤502可以获得一个数据包的调度时延信息，此外可以重复执行步骤501和步骤502，获得多个数据包的调度时延信息。
步骤503，统计多个数据包在不同无线链路传输的时间差；
步骤504，根据统计结果获得多个无线链路之间的调度时延差异信息。
在本实施方式中，可以根据统计结果获得多个无线链路之间的调度时延差异，例 如不同链路的RLC层发送相同PDCP PDU的时间差的平均值，等等。
步骤505，基于调度时延差异信息确定是否继续使用多个无线链路重复传输数据包。
例如，当不同链路的RLC层发送相同PDCP PDU的时间差的平均值大于某个门限值时，发送端可以认为此时重复传输模式的增益较小，可以取消重复传输模式的配置，不再采用多链路重复传输相同的PDCP PDU。
此外，本发明实施方式获得的调度时延差异可以和其他方式(例如采用现有技术)获得的传输速率差异结合起来，确定是继续使用多个无线链路还是使用一个无线链路传输数据包。例如，当不同链路的RLC层发送相同PDCP PDU的时间差的平均值大于某个门限值时，和/或；不同链路的无线链路传输速率差别大于某个门限值时：发送端可以认为此时重复传输模式的增益较小，可以取消重复传输模式的配置，不再采用多链路重复传输相同的PDCP PDU。
此外，本发明前述的一个或多个实施方式也可以结合起来使用。值得注意的是，附图2至5仅示意性地对本发明实施例进行了说明，但本发明不限于此。例如可以适当地调整各个步骤之间的执行顺序，此外还可以增加其他的一些步骤或者减少其中的某些步骤。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图的记载。
由上述实施例可知，根据成功传输PDCP层数据包的无线链路的传输状态信息和/或发送RLC层数据包的无线链路的传输状态信息，来获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息。由此，可以为发送端判断当前网络是否适合进行重复传输提供准确的参考依据，可以更好地权衡多连接重复传输模式下浪费的无线资源和减少的时延之间的得失，配置更合适的数据传输模式或者流量控制模式。
实施例2
本发明实施例提供一种传输状态报告方法，应用于使用多个无线链路传输数据包的通信系统中。本发明实施例从接收端进行说明，与实施例1相同的内容不再赘述。
图6是本发明实施例的传输状态报告方法的示意图，如图6所示，所述传输状态报告方法包括：
步骤601，接收端在接收发送端通过多个无线链路发送的PDCP层数据包时，记 录所述数据包由哪个无线链路成功传输；
步骤602，接收端根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及
步骤602，接收端向所述发送端反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
在本实施例中，通过接收端反馈这些信息，可以使得发送端根据这些信息获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息，由此确定是否继续使用所述多个无线链路重复传输所述数据包，或者进行流量控制，等等。
在本实施例中，可以多次执行步骤601，即多次接收PDCP层数据包；然后在多次数据包传输后，步骤602获得成功传输数据包的无线链路的传输状态信息。
在本实施例中，接收端可以直接向发送端反馈该传输状态信息，该传输状态信息可以被承载于PDCP层状态报告中，接收端向发送端反馈所述PDCP层状态报告。
或者，接收端也可以根据该传输状态信息对多个无线链路的传输速率进行统计，获得多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息，然后将这些信息承载在PDCP层状态报告中并反馈给发送端。
或者，接收端也可以根据该传输状态信息对多个无线链路的传输速率进行统计，获得多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息，然后将这些信息承载在RRC层信令中并反馈给发送端。
在一个实施方式中，可以在PDCP层状态报告中包括成功传输数据包的无线链路的传输状态信息。例如，可以在PDCP层状态报告中指示每个成功传输的PDCP PDU由哪个无线链路传输。PDCP层状态报告可以包括：比特映射字段，由所述比特映射字段中的一个或多个比特指示每个被成功传输的数据包由哪个无线链路传输。
在另一个实施方式中，可以在PDCP层状态报告中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息。例如，可以在PDCP层状态报告中指示通过不同链路成功传输的PDCP PDU的数目相关信息。PDCP层状态报告可以包括：数目相关字段，表示由不同无线链路成功传输的数据包的数目；或者表示由不同无线链路成功传输的数据包的数目的比值或差值。
其中，接收端可以对所述多个无线链路的传输速率进行统计；以及基于统计结果 获得表示成功传输数据包的无线链路相关信息。然后将该无线链路相关信息承载在PDCP层状态报告中。
在另一个实施方式中，可以在RRC层信令中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息。例如，该RRC层信令可以包括如下信息的其中一项或多项：由不同无线链路成功传输的数据包的数目的比值或差值大于预设阈值的指示信息；由不同无线链路成功传输的数据包的数目的比值或差值；由不同无线链路成功传输的数据包的数目。
由上述实施例可知，根据成功传输PDCP层数据包的无线链路的传输状态信息，来获得多个无线链路之间的传输速率差异信息。由此，可以为发送端判断当前网络是否适合进行重复传输提供准确的参考依据，可以更好地权衡多连接重复传输模式下浪费的无线资源和减少的时延之间的得失，配置更合适的数据传输模式或者流量控制模式。
实施例3
本发明实施例提供一种传输状态报告装置，配置于使用多个无线链路向接收端传输数据包的发送端，本发明实施例与实施例1相同的内容不再赘述。
图7是本发明实施例的传输状态报告装置的示意图，如图7所示，传输状态报告装置700包括：
差异获得单元701，其获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中
所述传输速率差异信息基于成功传输PDCP层数据包的无线链路的传输状态信息而得到，调度时延差异信息基于发送RLC层数据包的无线链路的传输状态信息而得到。
如图7所示，传输状态报告装置700还可以包括：
模式确定单元702，其基于所述传输速率差异信息和/或调度时延差异信息，确定是否继续使用所述多个无线链路重复传输所述数据包。
在一个实施方式中，可以在接收端反馈的PDCP层状态报告中包括成功传输所述数据包的无线链路的传输状态信息。
图8是本发明实施例的差异获得单元701的示意图，如图8所示，差异获得单元 701可以包括：
报告接收单元801，其接收接收端反馈的PDCP层状态报告，其中PDCP层状态报告中包括成功传输所述数据包的无线链路的传输状态信息；
速率统计单元802，其基于PDCP层状态报告对多个无线链路的传输速率进行统计；
信息获得单元803，其根据统计结果获得多个无线链路之间的传输速率差异信息。
在本实施方式中，PDCP层状态报告中可以包括：比特映射字段，由所述比特映射字段中的一个或多个比特指示每个被成功传输的数据包由哪个无线链路传输。
在另一个实施方式中，可以在接收端反馈的PDCP层状态报告中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息。
图9是本发明实施例的差异获得单元701的示意图，如图9所示，差异获得单元701可以包括：
报告接收单元901，其接收接收端反馈的PDCP层状态报告，其中PDCP层状态报告中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息；
信息获得单元902，其根据PDCP层状态报告获得多个无线链路之间的传输速率差异信息。
在本实施方式中，PDCP层状态报告可以包括：数目相关字段，承载由不同无线链路成功传输的数据包的数目，和/或，承载由不同无线链路成功传输的数据包的数目的比值或差值。
在另一个实施方式中，可以在接收端反馈的RRC层信令中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息。
图10是本发明实施例的差异获得单元701的示意图，如图10所示，差异获得单元701可以包括：
信令接收单元1001，其接收所述接收端反馈的RRC层信令，其中所述RRC层信令中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
信息获得单元1002，其根据所述RRC层信令获得所述多个无线链路之间的所述传输速率差异信息。
在本实施方式中，RRC层信令可以包括如下信息的其中一项或多项：由不同无 线链路成功传输的所述数据包的数目的比值或差值大于预设阈值的指示信息；由不同无线链路成功传输的所述数据包的数目的比值或差值；由不同无线链路成功传输的所述数据包的数目。
在另一个实施方式中，调度时延差异信息可以基于发送RLC层数据包的无线链路的传输状态信息而得到。
图11是本发明实施例的差异获得单元701的示意图，如图11所示，差异获得单元701可以包括：
信息指示单元1101，其在每一无线链路的RLC层递交所述数据包时，向PDCP层指示所述数据包已经被RLC层发送的发送信息；以及
时延获得单元1102，其由所述PDCP层根据所述发送信息获得不同无线链路发送所述数据包的调度时延信息。
如图11所示，差异获得单元701还可以包括：
时延统计单元1103，其统计多个数据包在所述不同无线链路传输的时间差；
信息获得单元1104，其根据统计结果获得所述多个无线链路之间的调度时延差异信息。
值得注意的是，以上附图仅示意性地示出了与本发明相关的各个部件，但本发明不限于此，例如还可以具有其他部件，可以参考相关技术。
由上述实施例可知，根据成功传输PDCP层数据包的无线链路的传输状态信息和/或发送RLC层数据包的无线链路的传输状态信息，来获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息。由此，可以为发送端判断当前网络是否适合进行重复传输提供准确的参考依据，可以更好地权衡多连接重复传输模式下浪费的无线资源和减少的时延之间的得失，配置更合适的数据传输模式或者流量控制模式。
实施例4
本发明实施例提供一种传输状态报告装置，配置于使用多个无线链路向接收端传输数据包的接收端，本发明实施例与实施例2相同的内容不再赘述。
图12是本发明实施例的传输状态报告装置的示意图，如图12所示，传输状态报告装置1200包括：
信息记录单元1201，其在接收发送端通过所述多个无线链路发送的PDCP层数 据包时，记录所述数据包由哪个无线链路成功传输；
状态获得单元1202，其根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及
信息反馈单元1203，其向所述发送端反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
在一个实施方式中，可以在接收端反馈的PDCP层状态报告中包括成功传输所述数据包的无线链路的传输状态信息。
图13是本发明实施例的信息反馈单元1203的示意图，如图13所示，信息反馈单元1203可以包括：
报告发送单元1301，其向所述发送端反馈PDCP层状态报告，其中所述PDCP层状态报告中包括成功传输所述数据包的无线链路的传输状态信息。
例如，所述PDCP层状态报告可以包括：比特映射字段，由所述比特映射字段中的一个或多个比特指示每个被成功传输的数据包由哪个无线链路传输。
在另一个实施方式中，可以在接收端反馈的PDCP层状态报告中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息。
图14是本发明实施例的信息反馈单元1203的示意图，如图14所示，信息反馈单元1203可以包括：
速率统计单元1401，其对所述多个无线链路的传输速率进行统计；以及基于统计结果获得所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
报告发送单元1402，其向所述发送端反馈PDCP层状态报告，其中所述PDCP层状态报告中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
例如，所述PDCP层状态报告中可以包括：数目相关字段，承载由不同无线链路成功传输的数据包的数目，和/或，承载由不同无线链路成功传输的数据包的数目的比值或差值。
在另一个实施方式中，可以在接收端反馈的RRC层信令中包括多个无线链路的传输速率信息和/或多个无线链路之间的传输速率差异信息。
图15是本发明实施例的信息反馈单元1203的示意图，如图15所示，信息反馈单元1203可以包括：
速率统计单元1501，其对所述多个无线链路的传输速率进行统计；以及基于统计结果获得所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
信令发送单元1502，其向所述发送端反馈RRC层信令，其中所述RRC层信令中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
例如，所述RRC层信令中可以包括如下信息的其中一项或多项：由不同无线链路成功传输的数据包的数目的比值或差值大于预设阈值的指示信息；由不同无线链路成功传输的数据包的数目的比值或差值；由不同无线链路成功传输的数据包的数目。
由上述实施例可知，根据成功传输PDCP层数据包的无线链路的传输状态信息，来获得多个无线链路之间的传输速率差异信息。由此，可以为发送端判断当前网络是否适合进行重复传输提供准确的参考依据，可以更好地权衡多连接重复传输模式下浪费的无线资源和减少的时延之间的得失，配置更合适的数据传输模式或者流量控制模式。
实施例5
本发明实施例还提供一种通信系统，与实施例1至4相同的内容不再赘述。该通信系统使用多个无线链路传输数据包，可以包括：
发送端，其获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中所述传输速率差异信息基于成功传输PDCP层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送RLC层数据包的无线链路的传输状态信息而得到。
此外，所述通信系统还可以包括：
接收端，其在接收所述发送端通过所述多个无线链路发送的PDCP层数据包时，记录所述数据包由哪个无线链路成功传输；根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
图16是本发明实施例的通信系统的示意图，示意性说明了发送端为基站以及接收端为用户设备的情况，如图16所示，通信系统1600可以包括基站1601和用户设备1602。其中，基站1601可以配置有如实施例3所述的传输状态报告装置700；用户设备1602可以配置有如实施例4所述的传输状态报告装置1200。
本发明实施例还提供一种发送端，例如可以是基站也可以是用户设备，但本发明不限于此，还可以是其他的网络设备。以下以基站为例进行说明。
图17是本发明实施例的基站的构成示意图。如图17所示，基站1700可以包括：中央处理器(CPU)200和存储器210；存储器210耦合到中央处理器200。其中该存储器210可存储各种数据；此外还存储信息处理的程序，并且在中央处理器200的控制下执行该程序。其中，中央处理器200可以被配置为实现实施例1所述的传输状态报告方法。
例如，中央处理器200可以被配置为进行如下的控制：获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中所述传输速率差异信息基于成功传输PDCP层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送RLC层数据包的无线链路的传输状态信息而得到。
此外，如图17所示，基站1700还可以包括：收发机220和天线230等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站1700也并不是必须要包括图17中所示的所有部件；此外，基站1700还可以包括图17中没有示出的部件，可以参考现有技术。
本发明实施例还提供一种接收端，例如可以是用户设备也可以是基站，但本发明不限于此，还可以是其他的网络设备。以下以用户设备为例进行说明。
图18是本发明实施例的用户设备的示意图。如图18所示，该用户设备1800可以包括中央处理器100和存储器140；存储器140耦合到中央处理器100。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。其中，中央处理器100可以被配置为实现实施例2所述的传输状态报告方法。
例如，中央处理器100可以被配置为进行如下的控制：在接收发送端通过多个无线链路发送的PDCP层数据包时，记录所述数据包由哪个无线链路成功传输；根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及反馈成功传输数据包的 无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
如图18所示，该用户设备1800还可以包括：通信模块110、输入单元120、显示器160、电源170。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，用户设备1800也并不是必须要包括图18中所示的所有部件，上述部件并不是必需的；此外，用户设备1800还可以包括图18中没有示出的部件，可以参考现有技术。
本发明实施例还提供一种发送端，以用户设备为例，该用户设备的构成可以参考图18。其中中央处理器100可以被配置为进行如下的控制：获得多个无线链路之间的传输速率差异信息和/或调度时延差异信息，其中所述传输速率差异信息基于成功传输PDCP层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送RLC层数据包的无线链路的传输状态信息而得到。
本发明实施例还提供一种接收端，以基站为例，该基站的构成可以参考图17。其中中央处理器200可以被配置为进行如下的控制：在接收发送端通过多个无线链路发送的PDCP层数据包时，记录所述数据包由哪个无线链路成功传输；根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
本发明实施例还提供一种计算机可读程序，其中当在传输状态报告装置或者发送端中执行所述程序时，所述程序使得所述传输状态报告装置或者发送端执行实施例1所述的传输状态报告方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得传输状态报告装置或者发送端执行实施例1所述的传输状态报告方法。
本发明实施例还提供一种计算机可读程序，其中当在传输状态报告装置或者接收端中执行所述程序时，所述程序使得所述传输状态报告装置或者接收端执行实施例2所述的传输状态报告方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可 读程序使得传输状态报告装置或者接收端执行实施例2所述的传输状态报告方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的信息传输方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图7中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合(例如，差异获得单元、模式确定单元等)，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图1所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (19)

  1. 一种传输状态报告装置，配置于使用多个无线链路传输数据包的发送端中，所述传输状态报告装置包括：
    差异获得单元，其获得所述多个无线链路之间的传输速率差异信息和/或调度时延差异信息；
    其中，所述传输速率差异信息基于成功传输分组数据会聚协议层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送无线链路控制层数据包的无线链路的传输状态信息而得到。
  2. 根据权利要求1所述的传输状态报告装置，其中，所述传输状态报告装置还包括：
    模式确定单元，其基于所述传输速率差异信息和/或所述调度时延差异信息，确定是否继续使用所述多个无线链路重复传输所述数据包。
  3. 根据权利要求1所述的传输状态报告装置，其中，所述差异获得单元包括：
    报告接收单元，其接收接收端反馈的分组数据会聚协议层状态报告，其中所述分组数据会聚协议层状态报告中包括成功传输所述数据包的无线链路的传输状态信息；
    速率统计单元，其基于所述分组数据会聚协议层状态报告对所述多个无线链路的传输速率进行统计；
    信息获得单元，其根据统计结果获得所述多个无线链路之间的所述传输速率差异信息。
  4. 根据权利要求3所述的传输状态报告装置，其中，所述分组数据会聚协议层状态报告包括：比特映射字段，由所述比特映射字段中的一个或多个比特指示每个被成功传输的数据包由哪个无线链路传输。
  5. 根据权利要求1所述的传输状态报告装置，其中，所述差异获得单元包括：
    报告接收单元，其接收接收端反馈的分组数据会聚协议层状态报告，其中所述分组数据会聚协议层状态报告中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
    信息获得单元，其根据所述分组数据会聚协议层状态报告获得所述多个无线链路之间的所述传输速率差异信息。
  6. 根据权利要求5所述的传输状态报告装置，其中，所述分组数据会聚协议层状态报告包括：数目相关字段，承载由不同无线链路成功传输的数据包的数目，和/或，承载由不同无线链路成功传输的数据包的数目的比值或差值。
  7. 根据权利要求1所述的传输状态报告装置，其中，所述差异获得单元包括：
    信令接收单元，其接收接收端反馈的无线资源控制信令，其中所述无线资源控制信令中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
    信息获得单元，其根据所述无线资源控制信令获得所述多个无线链路之间的所述传输速率差异信息。
  8. 根据权利要求7所述的传输状态报告装置，其中，所述无线资源控制信令包括如下信息的其中一项或多项：由不同无线链路成功传输的所述数据包的数目的比值或差值大于预设阈值的指示信息；由不同无线链路成功传输的所述数据包的数目的比值或差值；由不同无线链路成功传输的所述数据包的数目。
  9. 根据权利要求1所述的传输状态报告装置，其中，所述差异获得单元包括：
    信息指示单元，其在每一无线链路的所述发送端的无线链路控制层向下层递交所述数据包时，向分组数据会聚协议层指示所述数据包已经由所述无线链路控制层发送的发送信息；以及
    时延获得单元，其由所述分组数据会聚协议层根据所述发送信息获得不同无线链路发送所述数据包的调度时延信息。
  10. 根据权利要求9所述的传输状态报告装置，其中，所述差异获得单元包括：
    时延统计单元，其统计多个数据包在所述不同无线链路传输的时间差；
    信息获得单元，其根据统计结果获得所述多个无线链路之间的所述调度时延差异信息。
  11. 一种传输状态报告装置，配置于使用多个无线链路传输数据包的接收端，所述传输状态报告装置包括：
    信息记录单元，其在接收发送端通过所述多个无线链路发送的分组数据会聚协议层数据包时，记录所述数据包由哪个无线链路成功传输；
    状态获得单元，其根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及
    信息反馈单元，其向所述发送端反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
  12. 根据权利要求11所述的传输状态报告装置，其中，所述信息反馈单元包括：
    报告发送单元，其向所述发送端反馈分组数据会聚协议层状态报告，其中所述分组数据会聚协议层状态报告中包括成功传输所述数据包的无线链路的传输状态信息。
  13. 根据权利要求12所述的传输状态报告装置，其中，所述分组数据会聚协议层状态报告包括：比特映射字段，由所述比特映射字段中的一个或多个比特指示每个被成功传输的数据包由哪个无线链路传输。
  14. 根据权利要求11所述的传输状态报告装置，其中，所述信息反馈单元包括：
    速率统计单元，其对所述多个无线链路的传输速率进行统计；以及基于统计结果获得所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
    报告发送单元，其向所述发送端反馈分组数据会聚协议层状态报告，其中所述分组数据会聚协议层状态报告中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
  15. 根据权利要求14所述的传输状态报告装置，其中，所述分组数据会聚协议层状态报告包括：数目相关字段，承载由不同无线链路成功传输的数据包的数目，和/或，承载由不同无线链路成功传输的数据包的数目的比值或差值。
  16. 根据权利要求11所述的传输状态报告装置，其中，所述信息反馈单元包括：
    速率统计单元，其对所述多个无线链路的传输速率进行统计；以及基于统计结果获得所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息；
    信令发送单元，其向所述发送端反馈无线资源控制信令，其中所述无线资源控制信令中包括所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
  17. 根据权利要求16所述的传输状态报告装置，其中，所述无线资源控制信令包括如下信息的其中一项或多项：由不同无线链路成功传输的数据包的数目的比值或差值大于预设阈值的指示信息；由不同无线链路成功传输的数据包的数目的比值或差 值；由不同无线链路成功传输的数据包的数目。
  18. 一种通信系统，使用多个无线链路传输数据包，所述通信系统包括：
    发送端，其获得所述多个无线链路之间的传输速率差异信息和/或调度时延差异信息；其中所述传输速率差异信息基于成功传输分组数据会聚协议层数据包的无线链路的传输状态信息而得到，所述调度时延差异信息基于发送无线链路控制层数据包的无线链路的传输状态信息而得到。
  19. 根据权利要求18所述的通信系统，其中，所述通信系统还包括：
    接收端，其在接收所述发送端通过所述多个无线链路发送的分组数据会聚协议层数据包时，记录所述数据包由哪个无线链路成功传输；根据记录结果获得成功传输数据包的无线链路的传输状态信息；以及反馈成功传输数据包的无线链路的传输状态信息，或者反馈基于成功传输所述数据包的无线链路的传输状态信息而得到的所述多个无线链路的传输速率信息和/或所述多个无线链路之间的传输速率差异信息。
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