WO2018227600A1 - 反馈信息的发送和接收方法、装置以及通信*** - Google Patents
反馈信息的发送和接收方法、装置以及通信*** Download PDFInfo
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- WO2018227600A1 WO2018227600A1 PCT/CN2017/088750 CN2017088750W WO2018227600A1 WO 2018227600 A1 WO2018227600 A1 WO 2018227600A1 CN 2017088750 W CN2017088750 W CN 2017088750W WO 2018227600 A1 WO2018227600 A1 WO 2018227600A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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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
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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
- H04L1/1607—Details of the supervisory signal
- H04L1/1614—Details of the supervisory signal using bitmaps
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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
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and device for transmitting and receiving feedback information, and a communication system.
- HARQ Hybrid Automatic Repeat ReQuest
- OFDM Long Term Evolution
- FDD Frequency Division Duplex
- UE User Equipment
- Feedback information eg, HARQ-ACK
- TDD Time Division Duplex
- the user equipment is required to feed back HARQ-ACK corresponding to multiple downlink subframes in a certain uplink subframe.
- each transport block (TB, Transport Block) corresponds to a 1-bit HARQ-ACK for indicating an ACK or a NACK. Since the fed back HARQ-ACK may correspond to multiple subframes and/or carriers, the number of bits of the HARQ-ACK may also vary with the number of TBs actually scheduled.
- LTE supports dynamically adjusting feedback information (for example, the final transmitted feedback information is called HARQ-ACK codebook, HARQ-ACK codebook), that is, dynamically determining the number of HARQ-ACK bits to be fed back according to actual data scheduling, thereby reducing The necessary feedback overhead.
- HARQ-ACK codebook for example, the final transmitted feedback information is called HARQ-ACK codebook, HARQ-ACK codebook
- LTE uses the Downlink Assignment Index (DAI) mechanism to dynamically determine the number of HARQ-ACK bits that are fed back.
- DAI Downlink Assignment Index
- the DAI may be notified to the user equipment through a 4-bit field in a Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel)/Enhanced PDCCH (EPDCCH), where 2 bits indicate counter DAI, indicating the number of accumulated PDCCH/EPDCCH, and the rest The 2 bits indicate the total DAI, indicating the total number of PDCCH/EPDCCHs up to the current subframe.
- the PDCCH/EPDCCH schedules the transmission of the Physical Downlink Shared Channel (PDSCH) or the release of the Semi-Persistent Scheduling (SPS).
- PDSCH Physical Downlink Shared Channel
- SPS Semi-Persistent Scheduling
- FIG. 1 is an exemplary diagram of dynamically determining feedback information using DAI, showing the case of LTE carrier aggregation.
- An example of a HARQ-ACK codebook (HARQ codebook) is dynamically determined using DAI signaling.
- the user equipment is configured with eight carriers CC#0 ⁇ CC#7, each carrier is scheduled to transmit data in four downlink subframes, and one downlink TB transmission can be scheduled in each subframe.
- the shadow indicates the subframe in which the TB scheduling actually exists, and the user equipment needs to feed back HARQ-ACK to all carriers and subframes in the aggregation window in FIG. 1 in a certain uplink subframe.
- a network device for example, a base station
- the number of HARQ-ACK bits or the size of the HARQ-ACK codebook that the user equipment needs to feed back is 13.
- the two numbers in parentheses in Figure 1 are respectively represented by (counter DAI, total DAI).
- the counter DAI is incremented by one; the total DAI represents the total number of TBs scheduled to be up to the current subframe.
- the counter DAI determines the relative position of each bit.
- FIG. 2 is an exemplary diagram in which the DAI of FIG. 1 does not use a 2-bit limit.
- each DAI uses a 2-bit indication, its value ranges from 0 to 3.
- the 2-bit limit is not considered in FIG. 2, and the DAI value range when the real count is used can be compared with FIG.
- Counter DAI total DAI
- the user equipment can still determine the feedback HARQ-ACK according to the total DAI as long as the user equipment detects other PDCCHs in the subframe.
- the total number of bits For the bit position corresponding to the received counter DAI, the user equipment may fill the ACK or NACK according to the actual demodulation and decoding result; for the remaining bit positions, the TB scheduled by the missed PDCCH is filled by the user equipment. NACK.
- Embodiments of the present invention provide a method, an apparatus, and a communication system for transmitting and receiving feedback information.
- Multiple carriers are grouped according to the number of code block groups and/or the number of transport blocks, and the feedback information corresponding to the carriers in each packet is respectively determined; thereby, not only the number of bits of correct feedback information can be reserved, but also the number of bits can be reduced.
- a method for sending feedback information includes:
- Multiple carriers are grouped according to the number of code block groups and/or the number of transport blocks;
- the feedback information corresponding to each group is cascaded and sent to the network device.
- a device for transmitting feedback information includes:
- a grouping unit that groups a plurality of carriers according to a number of code block groups and/or a number of transmission blocks
- a receiving unit which receives data sent by the network device on the multiple carriers and multiple time units, and a downlink allocation index for configuring feedback information sent on one or more carriers and multiple time units;
- Determining units respectively determining feedback information corresponding to the carrier within each packet
- a sending unit which cascades the feedback information corresponding to each group and sends the feedback information to the network device.
- a method for receiving feedback information includes:
- Multiple carriers are grouped according to the number of code block groups and/or the number of transport blocks;
- a device for receiving feedback information includes:
- a grouping unit that groups a plurality of carriers according to a number of code block groups and/or a number of transmission blocks
- a sending unit that transmits data to the user equipment on the plurality of carriers and the plurality of time units, and transmits a downlink allocation index for configuring the feedback information to the user equipment on the one or more carriers and the multiple time units ;
- a receiving unit that receives feedback information sent by the user equipment
- a determining unit that determines feedback information corresponding to the data transmitted on the plurality of carriers and the plurality of time units according to the packet.
- a communication system including:
- a network device comprising the receiving device of the feedback information as described in the fourth aspect
- User equipment comprising a transmitting device of feedback information as described in the second aspect.
- the beneficial effects of the embodiments of the present invention are: grouping multiple carriers according to the number of code block groups and/or the number of transmission blocks, and respectively determining feedback information corresponding to carriers in each packet; thereby, not only can correct the correct The number of bits of the feedback information, and can reduce the overhead of feedback information or the overhead of DCI signaling, thereby reducing or avoiding waste of resources.
- 1 is an exemplary diagram of dynamically determining feedback information using DAI
- FIG. 2 is an exemplary diagram in which the DAI of FIG. 1 does not use a 2-bit limit
- FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present invention.
- FIG. 4 is a diagram showing an example of data transmission in the case of carrier aggregation
- FIG. 5 is a schematic diagram of a method for sending feedback information according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of a method for receiving feedback information according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of a method for transmitting and receiving feedback information according to an embodiment of the present invention.
- FIG. 8 is a diagram showing an example of dynamically determining feedback information using DAI according to an embodiment of the present invention.
- FIG. 9 is an exemplary diagram in which the DAI of FIG. 8 does not use a 2-bit limit
- FIG. 10 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention.
- FIG. 11 is an exemplary diagram in which the DAI of FIG. 10 does not use a 4-bit limit
- 12 is another exemplary diagram of data transmission in the case of carrier aggregation
- FIG. 13 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention.
- FIG. 14 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention.
- 15 is another exemplary diagram of data transmission in the case of carrier aggregation
- 16 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention.
- 17 is a schematic diagram of a device for transmitting feedback information according to an embodiment of the present invention.
- FIG. 18 is a schematic diagram of a receiving device for feedback information according to an embodiment of the present invention.
- FIG. 19 is a schematic diagram of a network device according to an embodiment of the present invention.
- FIG. 20 is a schematic diagram of a user equipment according to an embodiment of the present invention.
- the terms “first”, “second”, etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
- the term “and/or” includes any and all combinations of one or more of the associated listed terms.
- the terms “comprising,” “comprising,” “having,” or “an” are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
- the term “and/or” includes any and all combinations of one or more of the associated listed terms.
- the term “communication network” or “wireless communication network” may refer to a network that conforms to any communication standard such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.
- LTE Long Term Evolution
- LTE-A Enhanced Long Term Evolution
- WCDMA Wideband Code Division Multiple Access
- HSPA High-Speed Packet Access
- the communication between devices in the communication system may be performed according to any phase of the communication protocol, and may include, for example but not limited to, the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future. 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.
- the term "network device” refers to, for example, a device in a communication system that accesses a terminal device to a communication network and provides a service for the terminal device.
- the network device may include, but is not limited to, a device: a base station (BS, a base station), an access point (AP, an Access Point), a transmission and reception point (TRP), a broadcast transmitter, and a mobility management entity (MME, Mobile). Management Entity), gateway, server, Radio Network Controller (RNC), Base Station Controller (BSC), and so on.
- BS base station
- AP access point
- TRP transmission and reception point
- MME mobility management entity
- Management Entity gateway
- server Radio Network Controller
- BSC Base Station Controller
- the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), and the like, and may further include a Remote Radio Head (RRH). , Remote Radio Unit (RRU), relay or low power node (eg femto, pico, etc.).
- RRH Remote Radio Head
- RRU Remote Radio Unit
- base station may include some or all of their functions, and each base station may provide 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.
- the term "user equipment” (UE) or “Terminal Equipment” (TE) refers to, for example, a device that accesses a communication network through a network device and receives a network service.
- the user equipment may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
- the user equipment may include, but is not limited to, a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, Cordless phones, smart phones, smart watches, digital cameras, and many more.
- a cellular phone Cellular Phone
- PDA Personal Digital Assistant
- wireless modem a wireless communication device
- handheld device a machine type communication device
- a laptop computer Cordless phones, smart phones, smart watches, digital cameras, and many more.
- the user equipment may also be a machine or device that performs monitoring or measurement, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, In-vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, and the like.
- MTC Machine Type Communication
- D2D Device to Device
- M2M Machine to Machine
- FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present invention, illustrating a case where a user equipment and a network device are taken as an example.
- the communication system 300 may include a network device 301 and a user equipment 302 (for simplicity)
- FIG. 3 illustrates only one user equipment and one network device as an example, but the present invention is not limited thereto.
- an existing service or a service that can be implemented in the future can be performed between the network device 301 and the user equipment 302.
- these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and high reliability low latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), and so on.
- Future 5G communication systems can support more flexible HARQ timing. For example, even for an FDD system, there is a case where the user equipment needs to perform HARQ-ACK feedback on data scheduled in a plurality of TTIs within one transmission time interval (TTI, Transmission Time Interval, for example, slot slot, etc.).
- TTI Transmission Time Interval
- slot slot for example, slot slot, etc.
- CBG retransmissions have been added for future 5G communication systems.
- One TB can be divided into multiple CBGs, and data retransmissions are in CBG units, thereby reducing retransmission overhead.
- HARQ-ACK feedback can also be performed for CBG, so 1 TB can correspond to multiple HARQ-ACK bits.
- CBG-based HARQ-ACK feedback traditional DAI indication methods in LTE may no longer be universally applicable. The reason is that the DAI indicates the number of PDCCH/EPDCCH in the LTE.
- the user equipment misses a certain PDCCH, the user equipment can learn that the TB of one PDCCH/EPDCCH scheduling is lost based on the total DAI, and reserves a 1-bit HARQ for it. - The margin of ACK.
- CBG-based HARQ-ACK if the number of CBGs supported by different carriers is different, the user equipment cannot know the number of CBGs included in the TB through the total DAI, and thus cannot reserve the correct number of HARQ-ACK bits for it.
- FIG. 4 is an exemplary diagram of data transmission in the case of carrier aggregation, where it is assumed that each carrier is scheduled at most one.
- the concept of TB transmission, aggregation window still exists.
- the user equipment needs to perform HARQ-ACK feedback on the TBs of multiple carrier scheduling; in the time domain, due to flexible HARQ timing, the user equipment may need to schedule TBs in multiple slots due to FDD or TDD.
- Give feedback. 4 differs from FIG. 1 or 2 in that the different carriers of FIG. 4 are independently configured with different numbers of CBGs, and thus FIG. 4 requires 32-bit HARQ-ACK feedback under ideal conditions.
- one method is to reserve and generate HARQ-ACK bits according to the maximum number of CBGs among all carriers, for example, without changing the meaning and indication methods of the existing counter DAI and total DAI.
- it means that all scheduled TBs generate HARQ-ACK feedback in 4 bits, so the 13 TBs scheduled in FIG. 4 will correspond to 52-bit HARQ-ACK feedback.
- the HARQ-ACK feedback overhead is greatly improved.
- Another method may, for example, change the existing counter DAI and total DAI meanings, for example, let the DAI no longer indicate the PDCCH/EPDCCH number (for a single TB transmission mode, which can be simply understood as the number of scheduled TBs), but indicate the number of CBGs. Since the number of CBGs is larger than the number of TBs, it is necessary to increase the number of DAI bits to satisfy the requirements of CBG addressing. Assuming that both the counter DAI and the total DAI fields are increased from the original 2 bits to 4 bits, the overhead of the downlink DCI will increase by 52 bits in the aggregation window shown in FIG. Although the ideal 32-bit HARQ-ACK feedback can be achieved at this time, the cost is increased by the overhead of DCI signaling.
- embodiments of the present invention provide a method and apparatus for dynamically determining feedback information (for example, a HARQ-ACK codebook) by grouping and rearranging carriers, and independently defining and using counter DAI in each packet. And total DAI, can support CBG-based HARQ-ACK feedback, and can effectively reduce the overhead of feedback information or the overhead of DCI signaling.
- feedback information for example, a HARQ-ACK codebook
- Embodiments of the present invention provide a method for transmitting and receiving feedback information.
- FIG. 5 is a schematic diagram of a method for transmitting feedback information according to an embodiment of the present invention, which is described from the user equipment side. As shown in FIG. 5, the method includes:
- Step 501 The user equipment groups multiple carriers according to the number of code block groups and/or the number of transmission blocks.
- Step 502 The user equipment receives data sent by the network device on the multiple carriers and multiple time units, and a downlink allocation index for configuring feedback information sent on one or more carriers and multiple time units.
- Step 503 The user equipment respectively determines feedback information corresponding to the carrier in each packet;
- Step 504 The user equipment cascades the feedback information corresponding to each group and sends the feedback information to the network device.
- the rules for the packet may be pre-defined by the standard, or may also be signaled to the user equipment by the network device.
- the notification may be performed by Radio Resource Control (RRC) signaling; however, the present invention is not limited thereto.
- RRC Radio Resource Control
- the network device and the user equipment can agree on how to group.
- the time unit may be any one of the following: a frame, a subframe, a time slot, a mimi-slot, and a transmission time interval (TTI); but the present invention is not limited thereto, and may also be It is other longer or shorter intervals.
- TTI transmission time interval
- a subframe or a time slot will be described as an example.
- the downlink allocation index is counted separately in each packet.
- counter DAI and total DAI are counted separately in packet 1 and packet 2.
- the counting process of counter DAI and total DAI in these two packets is independent, that is, the counting process of counter DAI and total DAI in packet 1 can be different.
- the DAI (or PDCCH) may be from one carrier.
- data can be transmitted on multiple carriers and multiple time units, while corresponding DAIs can be transmitted on one or more carriers and multiple time units.
- DAIs can be transmitted on one or more carriers and multiple time units.
- FIG. 6 is a schematic diagram of a method for receiving feedback information according to an embodiment of the present invention, which is described from the network device side. As shown in FIG. 6, the method includes:
- Step 601 The network device groups the multiple carriers according to the number of code block groups and/or the number of transmission blocks.
- Step 602 The network device sends data to the user equipment on the multiple carriers and multiple time units, and sends downlink allocation for configuring feedback information to the user equipment on one or more carriers and multiple time units. index;
- Step 603 The network device receives feedback information sent by the user equipment.
- Step 604 The network device determines, according to the packet, feedback information corresponding to the data sent on the multiple carriers and multiple time units.
- the data may be sent, for example, through a PDSCH, and the downlink allocation index (DAI) may be sent through a PDCCH or an EPDCCH.
- DAI downlink allocation index
- Each carrier may support one or more TBs, each TB may be divided into one or more CBGs, and the data is transmitted or retransmitted in units of CBG.
- the feedback information may be referred to as a HARQ-ACK codebook and may be a bit sequence.
- FIG. 7 is a schematic diagram of a method for transmitting and receiving feedback information according to an embodiment of the present invention, which is described from a network device side and a user equipment side. As shown in FIG. 7, the method includes:
- Step 701 The network device sends a grouping rule to the user equipment by using signaling.
- Step 702 The network device groups multiple carriers according to the number of code block groups and/or the number of transmission blocks.
- Step 703 The user equipment groups the multiple carriers according to the number of code block groups and/or the number of transmission blocks.
- Step 704 The network device sends data to the user equipment on the multiple carriers and multiple time units, and sends downlink allocation for configuring feedback information to the user equipment on one or more carriers and multiple time units. index;
- Step 705 The user equipment respectively determines feedback information corresponding to the carrier in each packet.
- Step 706 The user equipment cascades the feedback information corresponding to each group.
- Step 707 The network device receives the feedback information sent by the user equipment.
- Step 708 The network device determines, according to the packet, feedback information corresponding to the data sent on the multiple carriers and multiple time units.
- Embodiments 2 to 6 may be implemented separately or in any combination, and the present invention is not limited thereto.
- FIG. 5 to FIG. 7 only schematically illustrate the embodiment 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 adapt according to the above, and are not limited to the above description of FIGS. 5 to 7.
- multiple carriers are grouped according to the number of code block groups and/or the number of transmission blocks, and the feedback information corresponding to the carriers in each packet is respectively determined; thereby, not only the correct feedback information can be reserved.
- the number of bits and can reduce the overhead of feedback information or the overhead of DCI signaling, thereby reducing or avoiding waste of resources.
- the embodiment of the present invention is based on the first embodiment, and the case where the carrier is scheduled to schedule at most one TB will be described.
- multiple carriers having the same number of CBGs may be respectively divided into the same group to form one or more first groups; and the remaining one or more carriers not having the same number of CBGs are divided into the same group.
- the number of bits of the feedback information corresponding to the multiple carriers may be determined according to the same number of CBGs.
- the number of bits of the feedback information corresponding to the one or more carriers may be determined according to the maximum number of CBGs in the one or more carriers.
- FIG. 8 is a diagram showing an example of dynamically determining feedback information using DAI according to an embodiment of the present invention, wherein a carrier and a CBG configuration are the same as FIG. 4.
- a carrier and a CBG configuration are the same as FIG. 4.
- carriers having the same number of CBGs are divided into the same group (for example, packet 1, packet 2), and all other remaining carriers are grouped together (for example, Group 3). Therefore, the number of carriers CBG in packet 1 is 2, the number of carriers CBG in packet 2 is 3, and the number of carriers CBG in packet 3 are different.
- the counter DAI and the total DAI may still be subject to the LTE definition, ie, the number of PDCCH/EPDCCH indications. It can also be equivalent to indicating the number of TBs in the example of FIG.
- the user equipment will reserve an N-bit HARQ-ACK for each possible scheduled TB, corresponding to the TB included. N CBGs. Since the CBG numbers of the respective carriers in the first group are the same, the ambiguity of the HARQ-ACK codebook size is not caused. For each of the first groups, such as Packet 1 and Packet 2, no DCI overhead is added, and there is no additional bit overhead added to the HARQ-ACK codebook corresponding to the packet.
- a DAI mechanism that is completely independent of packet 1 and packet 2 may be used.
- the HARQ-ACK corresponding to the packet 3 will increase more than the ideal case, but only the carrier HARQ-ACK feedback amount in the packet 3 is increased.
- the number of feedback bits reserved according to the maximum number of CBGs will increase the HARQ-ACK feedback amount of all carriers accordingly.
- FIG. 9 is an exemplary diagram in which the DAI of FIG. 8 does not use the 2-bit limit, showing the DAI value range when the true count is used regardless of the 2-bit DAI bit width limit. Comparing the amount of HARQ-ACK feedback, ideally, the situation shown in Figure 4 requires 32-bit HARQ-ACK feedback, and the method of the present embodiment requires 38 ratios. Special HARQ-ACK feedback, while the above conventional method would require 52-bit HARQ-ACK feedback.
- the number of bits of feedback information corresponding to the multiple carriers may be determined according to the same number of CBGs.
- the number of bits of the feedback information corresponding to the one or more carriers may be determined according to the respective CBG numbers of the one or more carriers.
- the DAI corresponding to the one or more carriers in the second group is used to indicate the number of CBGs.
- the carrier and CBG configurations in Figure 4 are still taken as an example.
- the carrier grouping and the DAI indication of packet 1, packet 2 are the same as in the above embodiment, except for the DAI mechanism of packet 3.
- the new DAI definition is used here, that is, the counter DAI and the total DAI indicate the number of CBGs.
- FIG. 10 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention, wherein the carrier and CBG configuration are the same as FIG. 4.
- the counter DAI uses 4 bits to indicate the starting position of the HARQ-ACK bit of the corresponding CBG
- the total DAI uses 4 bits to indicate the total number of CBGs up to the current slot. For example, if the user equipment receives the PDCCH on the carrier 5 of the slot #n, it can know that the current 8-bit HARQ-ACK is shared, and the 3-bit HARQ-ACK of the CBG corresponding to the carrier 5 is numbered 5 in the codebook. 6, 7 position.
- FIG. 11 is an exemplary diagram in which the DAI of FIG. 10 does not use the 4-bit limit, showing the DAI value range when the true count is used regardless of the 4-bit DAI bit width limit.
- FIGS. 10 and 11 do not show the case after grouping, and the case after grouping can be referred to FIGS. 8 and 9.
- both the method of the present embodiment and the conventional method can achieve an ideal 32-bit HARQ-ACK feedback overhead. Assuming that both the counter DAI and the total DAI fields are increased from the original 2 bits to 4 bits, the DCI overhead increase caused by the two methods is compared.
- the DCI increase of the present embodiment is 16 bits, and the conventional method DCI is increased. The amount is 52 bits.
- the one may be separately The feedback information corresponding to the carrier is sent to the network device.
- HARQ-ACK feedback may be independently performed on the carrier without being associated with other packets ( The first group) together constitute a HARQ-ACK codebook.
- HARQ-ACK feedback may be performed using other PUCCH formats, for example, using PUCCH format 1a/1b or the like, and feeding back 1 to 2 bits of ACK/NACK.
- the number of CBGs that the carrier has is the number of CBGs in the TB.
- the number of CBGs that the carrier has may be the sum of the numbers of CBGs in the plurality of TBs.
- the foregoing embodiment 2 is extended to be applied to a scenario in which a carrier is configured with a space division multiplexing transmission mode, that is, a carrier can schedule up to two downlink TB transmissions.
- a carrier For carrier packet rearrangement, packets are grouped according to the total number of CBGs of all TBs included in each carrier, that is, carriers having the same total number of CBGs are grouped. Within each carrier group, carriers are arranged in ascending order of numbers.
- the counter DAI and the total DAI indicate the number of PDCCH/EPDCCH, and the HARQ-ACK bits are reserved in accordance with the total number of CBGs.
- the HARQ-ACK bits are reserved according to the maximum total number of CBGs in the packet, or the number of CBGs is indicated by adding the counter DAI and total DAI bits.
- FIG. 12 is another exemplary diagram of data transmission in the case of carrier aggregation, assuming that at most two TB transmissions are scheduled per carrier, the concept of an aggregation window still exists.
- each carrier that is aggregated supports a space division multiplexing transmission mode, and PDCCH/EPDCCH in each slot can schedule two TB transmissions.
- the actually scheduled time slots are shown in the shaded in Figure 12.
- the HARQ-ACK feedback bits can be reserved in accordance with the maximum number of TBs (i.e., 2) and the maximum number of CBGs (i.e., 4), so that each slot requires an 8-bit HARQ-ACK.
- the maximum number of TBs i.e., 2
- the maximum number of CBGs i.e., 4
- FIG. 13 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention, showing carrier packet rearrangement and counter DAI, total DAI indication according to an embodiment of the present invention.
- the carriers within each packet have the same total number of CBGs, so the HARQ-ACK bits can be reserved according to the respective total number of CBGs.
- carrier group 4 second group
- carrier 5 and carrier 2 have different total number of CBGs, and it is assumed here that the HARQ-ACK bits are reserved in accordance with the maximum total number of CBGs (i.e., 7).
- packet 1 corresponds to 12-bit HARQ-ACK
- packet 2 corresponds to 10-bit HARQ-ACK
- packet 3 corresponds to 30-bit HARQ-ACK
- packet 4 corresponds to 28-bit HARQ-ACK, requiring a total of 80-bit HARQ-ACK feedback, compared to
- the 120-bit HARQ-ACK feedback of the above conventional method saves about 33% of the feedback overhead in the embodiment of the present invention.
- Each carrier can schedule up to 2 TBs, which does not mean that 2 TBs are always scheduled. In actual scheduling, only 1 TB may be scheduled. However, the HARQ-ACK bit is always reserved according to 2 TBs, and no ambiguity is generated as long as the start and end positions of the HARQ-ACK bits corresponding to each TB are predefined.
- the corresponding 5-bit HARQ-ACK can be defined as follows: bits b0, b1 correspond to 2-bit HARQ-ACK of TB#0, bits b2, b3 And b4 corresponds to the 3-bit HARQ-ACK of TB#1.
- bits b0, b1 correspond to 2-bit HARQ-ACK of TB#0
- bits b2, b3 And b4 corresponds to the 3-bit HARQ-ACK of TB#1.
- the starting position of the HARQ-ACK corresponding to the TB may always start from b0, and the subsequent bits are sequentially arranged.
- This principle is generally applicable to the case where HARQ-ACK bits are reserved according to a certain maximum number, for example, for all embodiments of the present invention.
- the number of CBGs that the carrier has is the number of CBGs in the TB.
- the number of CBGs that the carrier has may be the maximum number of CBGs among the plurality of TBs.
- this embodiment provides another method different from Embodiment 3, which is also applicable to the case where each carrier can schedule up to 2 TB transmissions, that is, support the space division multiplexing transmission mode.
- packets are grouped according to the maximum number of CBGs in all TBs of each carrier, that is, carriers having the same maximum number of CBGs are grouped.
- carriers are arranged in ascending order of numbers.
- the counter DAI and the total DAI indicate the number of PDCCH/EPDCCH, and the HARQ-ACK bits are reserved in accordance with the maximum number of TBs in the group and the maximum number of CBGs.
- FIG. 14 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention, showing the present invention.
- carrier group reordering is performed here according to the maximum number of CBGs among all TBs (2 TBs in FIG. 14) scheduled by the carrier, and carriers having the same maximum CBG number are grouped.
- the maximum number of CBGs of CC#1 and CC#6 is 2, which is divided into packets 1; the maximum number of CBGs of CC#3, CC#4, and CC#5 is 3, which is divided into packets. 2; CC#0, CC#2, and CC#7 have the largest number of CBGs of 4, and are divided into packets 3.
- carriers in each packet are arranged in descending order of carrier numbers.
- the HARQ-ACK feedback bits are reserved in accordance with the maximum number of TBs in the group and the maximum number of CBGs.
- the counter DAI and the total DAI are indicated in each packet to indicate the number of PDCCH/EPDCCH.
- each scheduling slot in packet 1 corresponds to 4-bit HARQ-ACK feedback
- each scheduling slot of packet 2 corresponds to 6-bit HARQ-ACK feedback
- each scheduling slot in packet 3 corresponds to 8-bit HARQ-ACK feedback. Therefore, the method of the present embodiment requires a total of 96-bit HARQ-ACK feedback, which saves 20% of the feedback overhead compared to the 120-bit HARQ-ACK feedback of the above conventional method.
- each carrier can schedule up to 2 TBs, which does not mean that 2 TBs are always scheduled. In actual scheduling, only 1 TB may be scheduled. However, the HARQ-ACK bit is always reserved according to 2 TBs, and no ambiguity is generated as long as the start and end positions of the HARQ-ACK bits corresponding to each TB are predefined.
- the method of Embodiment 4 reserves 6-bit HARQ-ACK for it, and when 2 TBs are scheduled, it corresponds to 5-bit HARQ-ACK, which can be defined as bits b0 and b1.
- bits b2, b3, and b4 correspond to the 3-bit HARQ-ACK of TB#1.
- the starting position of the HARQ-ACK corresponding to the TB can always be started from b0.
- the embodiment of the present invention describes a case where there are at most one TB scheduling and a maximum of two TB scheduling in the carrier configured by the user equipment.
- packets may be first grouped according to the maximum number of supported TBs, that is, carriers having the same maximum number of TBs are grouped. Then, in the carrier packet having the same maximum TB number, the packet is again performed, and the grouping rule can be according to any one of Embodiment 2 to Embodiment 4.
- respective counter DAI and total DAI indications are defined.
- multiple carriers having the same number of TBs can be respectively divided into the same group to form one.
- a plurality of carriers having the same or a similar number of CBGs may be respectively grouped into the same group to form one or more fifth groups; and/or; for the fourth group, Multiple carriers having the same or a similar number of CBGs are grouped into the same group to form one or more sixth groups.
- 15 is another exemplary diagram of data transmission in the case of carrier aggregation, where it is assumed that the carrier schedules at most one or two TB transmissions, and the concept of an aggregation window still exists. For example, as shown in FIG. 15, carriers 2, 4, and 5 support up to 1 TB transmission, and the remaining carriers can support up to 2 TB transmissions. The time slots that are actually scheduled are shaded.
- the HARQ-ACK bit can be reserved according to the maximum TB number and the maximum number of CBGs, and 120-bit HARQ-ACK feedback is required at this time.
- FIG. 16 is another exemplary diagram of dynamically determining feedback information using DAI according to an embodiment of the present invention, showing carrier packet rearrangement and counter DAI, total DAI indication according to an embodiment of the present invention.
- carriers 0, 1, 3, 6, and 7 support up to 2 TB transmissions, which can be divided into the same group (third group); carriers 2, 4, and 5 support up to 1 TB transmission.
- the third group can be further divided into packet 1 and packet 2 (fifth group).
- the total number of CBGs of carriers in packet 1 is 3, and the total number of CBGs of carriers in packet 2 is 6.
- Counter DAI and total DAI are independently defined within each carrier group, and it is assumed here that the DAI indicates the number of PDCCH/EPDCCH.
- the method of the fifth embodiment requires a total of 65 bits of HARQ-ACK, which can save about 46% of the feedback overhead compared to the 120-bit HARQ-ACK feedback of the conventional method.
- the embodiment of the present invention describes the case of having a similar number of CBGs based on the first embodiment.
- multiple carriers having the same number of CBGs may be respectively divided into the same group to form one or more first groups; and the remaining one or more carriers not having the same number of CBGs are divided into the same group. Form a second group.
- the multiple carriers having the same number of CBGs may be: multiple carriers whose difference in the number of CBGs does not exceed a preset threshold; however, the present invention is not limited thereto.
- the number of bits of the feedback information corresponding to the multiple carriers may be determined according to the maximum number of CBGs in the number of adjacent CBGs.
- n there may be no carriers with the same number of CBGs, and other methods may be used to group the carriers. For example, a carrier whose CBG number differs by no more than n is grouped, and the value of n can be flexibly adjusted, and it is generally desired that n take a smaller value. For carriers in the same packet, as long as the number of CBGs is not much different, reserving the HARQ-ACK bits according to the maximum number of CBGs will not cause serious waste, thus saving the HARQ-ACK feedback overhead.
- the embodiment of the invention provides a device for transmitting feedback information.
- the transmitting device of the feedback information may be, for example, a user equipment, or may be some or some components or components of the user equipment.
- the same contents of the seventh embodiment and the first to sixth embodiments will not be described again.
- Figure 17 is a schematic diagram of a device for transmitting feedback information according to an embodiment of the present invention. As shown in Figure 17, the device for transmitting feedback information 1700 includes:
- a grouping unit 1701 which groups a plurality of carriers according to the number of code block groups and/or the number of transmission blocks;
- a receiving unit 1702 which receives data sent by the network device on the multiple carriers and multiple time units, and a downlink allocation index for configuring feedback information sent on one or more carriers and multiple time units;
- Determining unit 1703 which respectively determines feedback information corresponding to the carrier in each packet
- the sending unit 1704 is configured to cascade the feedback information corresponding to each packet and send the information to the network device.
- the rules for the packet are predefined or notified by the network device by signaling. And, the downlink allocation index is counted separately in each packet.
- the grouping unit 1701 may respectively divide a plurality of carriers having the same or a similar number of code block groups into the same group to form one or more first groups; the remaining number of the same or similar code block groups One or more carriers are divided into the same group to form a second group.
- the number of code block groups in the carrier is the number of code block groups in the one transport block; and the carrier supports at most multiple transmissions in the carrier.
- the number of code block groups that the carrier has is the sum of the number of code block groups in the plurality of transport blocks or the plurality of transmissions The maximum number of code block groups in the block.
- the plurality of carriers having the same number of code block groups are a plurality of carriers whose difference in the number of code block groups does not exceed a preset threshold.
- the sending unit 1704 is further configured to separately send the feedback information corresponding to the one carrier to the network device if the second group has only one carrier.
- the determining unit 1703 may determine, according to the number of the same code block group, the number of bits of the feedback information corresponding to the multiple carriers, or respectively, according to the similarity.
- the maximum number of code block groups in the number of code block groups determines the number of bits of feedback information corresponding to the plurality of carriers.
- the determining unit 1703 may determine, according to the maximum number of code block groups among the one or more carriers, the number of bits of the feedback information corresponding to the one or more carriers.
- the determining unit 1703 may further determine, according to the number of code block groups of the one or more carriers, the number of bits of the feedback information corresponding to the one or more carriers.
- the downlink allocation index corresponding to the one or more carriers in the second group is used to indicate the number of the code block groups.
- the grouping unit 1701 may further divide the plurality of carriers having the same number of transmission blocks into the same group to form one or more third groups; and the remaining one or more that do not have the same number of transmission blocks.
- the carriers are divided into the same group to form a fourth group.
- the grouping unit 1701 may be further configured to: for each of the third groups, respectively divide multiple carriers having the same or similar number of code block groups into the same group to form one or more fifth groups. And/or; for the fourth group, a plurality of carriers having the same or a similar number of code block groups are divided into the same group to form one or more sixth groups.
- the transmitting device 1700 for feedback information may also include other components or modules. For specific contents of these components or modules, reference may be made to related technologies.
- multiple carriers are grouped according to the number of code block groups and/or the number of transmission blocks, and the feedback information corresponding to the carriers in each packet is respectively determined; thereby, not only the correct feedback information can be reserved.
- the number of bits and can reduce the overhead of feedback information or the overhead of DCI signaling, thereby reducing or avoiding waste of resources.
- Embodiments of the present invention provide a receiving device for feedback information.
- the receiving device of the feedback information may be, for example, a network device, or may be some or some components or components of the network device.
- the same contents of the eighth embodiment and the first to sixth embodiments will not be described again.
- FIG. 18 is a schematic diagram of a receiving device for feedback information according to an embodiment of the present invention. As shown in FIG. 18, the receiving device 1800 for feedback information includes:
- a grouping unit 1801 which groups a plurality of carriers according to the number of code block groups and/or the number of transmission blocks;
- a sending unit 1802 which sends data to the user equipment on the multiple carriers and multiple time units, and sends a downlink allocation for configuring feedback information to the user equipment on one or more carriers and multiple time units index;
- a receiving unit 1803 which receives feedback information sent by the user equipment
- a determining unit 1804 determines feedback information corresponding to the data transmitted on the plurality of carriers and the plurality of time units according to the packet.
- the rules for the packet may be predefined or may be signaled to the user equipment; and the downlink allocation index is counted separately within each packet.
- the grouping unit 1801 may respectively divide a plurality of carriers having the same or a similar number of code block groups into the same group to form one or more first groups; the remaining number of the same or similar code block groups One or more carriers are divided into the same group to form a second group.
- the number of code block groups in the carrier is the number of code block groups in the one transport block; and the carrier supports at most multiple transmissions in the carrier.
- the number of code block groups that the carrier has is the sum of the number of code block groups in the plurality of transport blocks or the maximum number of code block groups in the plurality of transport blocks.
- the grouping unit 1801 may respectively divide a plurality of carriers having the same number of transmission blocks into the same group to form one or more third groups; and remaining one or more carriers that do not have the same number of transmission blocks Divided into the same group to form a fourth group.
- the grouping unit 1801 may be further configured to: for each of the third groups, respectively divide multiple carriers having the same or similar number of code block groups into the same group to form one or more fifth groups. And/or; for the fourth group, a plurality of carriers having the same or a similar number of code block groups are divided into the same group to form one or more sixth groups.
- the receiving device 1800 of the feedback information may also include other components or modules.
- the specific content of these components or modules reference may be made to related technologies.
- multiple carriers are grouped according to the number of code block groups and/or the number of transmission blocks, and the feedback information corresponding to the carriers in each packet is respectively determined; thereby, not only the correct feedback information can be reserved.
- the number of bits and can reduce the overhead of feedback information or the overhead of DCI signaling, thereby reducing or avoiding waste of resources.
- the embodiment of the present invention further provides a communication system.
- the communication system 300 can include:
- the network device 301 is configured with the receiving device 1800 of the feedback information as described in Embodiment 8.
- User equipment 302 which is configured with a transmitting device 1700 of feedback information as described in Embodiment 7.
- the embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.
- a network device which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.
- FIG. 19 is a schematic structural diagram of a network device according to an embodiment of the present invention.
- network device 1900 can include a processor 1910 (eg, a central processing unit CPU) and memory 1920; and memory 1920 is coupled to processor 1910.
- the memory 1920 can store various data; in addition, a program 1930 for information processing is stored, and the program 1930 is executed under the control of the processor 1910.
- the processor 1910 can be configured to execute the program 1930 to control a plurality of carriers according to the number of code block groups and/or the number of transport blocks; to the user on the plurality of carriers and the plurality of time units
- the device transmits data, and transmits a downlink allocation index for configuring feedback information to the user equipment on one or more carriers and multiple time units; receiving feedback information sent by the user equipment; and determining, according to the grouping, Feedback information corresponding to the data sent by the plurality of carriers and the plurality of time units.
- the network device 1900 may further include: a transceiver 1940, an antenna 1950, 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 network device 1900 does not have to include all the components shown in FIG. 19; in addition, the network device 1900 may also include components not shown in FIG. 19, and reference may be made to the prior art.
- the embodiment of the present invention further provides a user equipment, but the present invention is not limited thereto, and may be other devices.
- FIG. 20 is a schematic diagram of a user equipment according to an embodiment of the present invention.
- the user equipment 2000 can include a processor 2010 and a memory 2020; the memory 2020 stores data and programs and is coupled to the processor 2010.
- the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
- the processor 2010 may be configured to perform control of grouping a plurality of carriers according to the number of code block groups and/or the number of transmission blocks; receiving data transmitted by the network device on the plurality of carriers and the plurality of time units And a downlink allocation index for configuring feedback information sent on one or more carriers and multiple time units; respectively determining feedback information corresponding to the carrier in each packet; and performing feedback information corresponding to each packet
- the cascading is sent to the network device.
- the user equipment 2000 may further include: a communication module 2030, an input unit 2040, a display 2050, and a power source 2060.
- 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 2000 does not have to include all the components shown in FIG. 20, and the above components are not required; in addition, the user equipment 2000 may further include components not shown in FIG. There are technologies.
- the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a network device, the program causes the network device to perform the receiving method of the feedback information described in Embodiments 1 to 6.
- the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the network device to perform the receiving method of the feedback information described in Embodiments 1 to 6.
- the embodiment of the present invention further provides a computer readable program, wherein the program causes the user equipment to perform the method of transmitting the feedback information described in Embodiments 1 to 6 when the program is executed in the user equipment.
- the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the user equipment to perform the sending method of the feedback information described in Embodiments 1 to 6.
- 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 method/apparatus described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both.
- one or more of the functional block diagrams shown in Figure 17 and/or one of the functional block diagrams Or a plurality of combinations may correspond to respective software modules of a computer program flow, or may correspond to respective hardware modules.
- These software modules may correspond to the respective steps shown in FIG. 5, 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
一种反馈信息的发送和接收方法、装置以及通信***。所述方法包括:按照码块组数目和/或传输块数目对多个载波进行分组;接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;分别确定每个分组内所述载波所对应的反馈信息;以及将各个分组对应的反馈信息进行级联后发送给所述网络设备。由此,不仅能够预留正确的反馈信息的比特数目,而且能够降低反馈信息的开销或者DCI信令的开销,从而减少或避免资源的浪费。
Description
本发明实施例涉及通信技术领域,特别涉及一种反馈信息的发送和接收方法、装置以及通信***。
对于下行的混合自动重传请求(HARQ,Hybrid Automatic Repeat reQuest),在长期演进(LTE,Long Term Evolution)频分复用(FDD,Frequency Division Duplex)***中,用户设备(UE,User Equipment)需要在某一上行子帧内反馈对应于某一下行子帧的反馈信息(例如HARQ-ACK)。对于LTE时分复用(TDD,Time Division Duplex)***,由于帧结构的限制,有时需要用户设备在某一上行子帧内反馈对应于多个下行子帧的HARQ-ACK。
考虑载波聚合的情形,用户设备需要在某一上行子帧内反馈对应于多个下行载波的HARQ-ACK。例如,每个传输块(TB,Transport Block)对应1比特HARQ-ACK,用于指示ACK或NACK。由于反馈的HARQ-ACK可能对应多个子帧和/或载波,HARQ-ACK的比特数目也会随着实际调度的TB数发生变化。
LTE支持动态地调整反馈信息(例如将最终发送的反馈信息称为HARQ-ACK码书,HARQ-ACK codebook),即根据实际的数据调度动态地决定反馈的HARQ-ACK比特数目,从而可以减少不必要的反馈开销。
对于载波聚合情形,LTE使用下行分配索引(DAI,Downlink Assignment Index)机制来动态地决定反馈的HARQ-ACK比特数目。例如,DAI可以通过物理下行控制信道(PDCCH,Physical Downlink Control Channel)/增强的PDCCH(EPDCCH)中的4比特字段通知给用户设备,其中2比特指示counter DAI,表示累计的PDCCH/EPDCCH数目,其余2比特指示total DAI,表示截止到当前子帧的总PDCCH/EPDCCH数目。这里的PDCCH/EPDCCH调度物理下行共享信道(PDSCH,Physical Downlink Shared Channel)的传输或指示下行的半静态调度(SPS,Semi-Persistent Scheduling)的释放。关于DAI更加详细的定义可以参考LTE 36.213标准。
图1是使用DAI动态决定反馈信息的一示例图,示出了在LTE载波聚合情况下
使用DAI信令动态决定HARQ-ACK码书(HARQ codebook)的一个例子。如图1所示,用户设备配置了8个载波CC#0~CC#7,每个载波在4个下行子帧内调度有数据传输,每子帧可以调度1个下行TB传输,图1中的阴影标识了实际存在TB调度的子帧,用户设备需要在某个上行子帧内对图1中聚合窗内的所有载波和子帧反馈HARQ-ACK。
在图1中,由于网络设备(例如基站)总共调度了13个下行的TB传输,用户设备所需要反馈的HARQ-ACK比特数目或者HARQ-ACK码书的尺寸为13。图1中括号内前后两个数字分别表示(counter DAI,total DAI)。在本示例中,可以简单地理解为每调度一个TB,counter DAI加1;total DAI表示截至当前子帧总共得到调度的TB数目。对于这13比特需要反馈的HARQ-ACK,counter DAI决定了各个比特的相对位置。
图2是图1的DAI没有使用2比特限制的示例图。在图1中,由于每个DAI均使用2比特指示,其取值范围为0到3。而图2中不考虑2比特限制,使用真实计数时的DAI取值范围,可以与图1进行对照。
Counter DAI和total DAI的联合使用能够为PDCCH漏检提供一定鲁棒性。例如,即使用户设备在某一子帧内没有检测到对应于某一载波的PDCCH,只要用户设备在该子帧内检测到了其他PDCCH,那么用户设备仍然可以根据total DAI来确定反馈的HARQ-ACK总比特数目。对于接收到的counter DAI对应的比特位置,用户设备可以按照实际的解调和译码结果填充ACK或NACK;对于其余的比特位置,对应于漏检的PDCCH所调度的TB,用户设备对其填充NACK。
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:未来第五代(5G)***可以支持更加灵活的HARQ时序,并且增加了对基于码块组(CBG,code block group)重传的支持。传统的DAI指示方法无法预留正确的HARQ-ACK比特数目,导致HARQ-ACK的反馈开销或者下行控制信息(DCI,Downlink Control Information)的信令开销增加,从而会导致资源的
浪费。
本发明实施例提供一种反馈信息的发送和接收方法、装置以及通信***。按照码块组数目和/或传输块数目对多个载波进行分组,并且分别确定每个分组内载波所对应的反馈信息;由此,不仅能够预留正确的反馈信息的比特数目,而且能够降低反馈信息的开销或者DCI信令的开销,从而减少或避免资源的浪费。
根据本发明实施例的第一个方面,提供一种反馈信息的发送方法,包括:
按照码块组数目和/或传输块数目对多个载波进行分组;
接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;
分别确定每个分组内所述载波所对应的反馈信息;以及
将各个分组对应的反馈信息进行级联后发送给所述网络设备。
根据本发明实施例的第二个方面,提供一种反馈信息的发送装置,包括:
分组单元,其按照码块组数目和/或传输块数目对多个载波进行分组;
接收单元,其接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;
确定单元,其分别确定每个分组内所述载波所对应的反馈信息;以及
发送单元,其将各个分组对应的反馈信息进行级联后发送给所述网络设备。
根据本发明实施例的第三个方面,提供一种反馈信息的接收方法,包括:
按照码块组数目和/或传输块数目对多个载波进行分组;
在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;
接收所述用户设备发送的反馈信息;以及
根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
根据本发明实施例的第四个方面,提供一种反馈信息的接收装置,包括:
分组单元,其按照码块组数目和/或传输块数目对多个载波进行分组;
发送单元,其在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;
接收单元,其接收所述用户设备发送的反馈信息;以及
确定单元,其根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
根据本发明实施例的第五个方面,提供一种通信***,包括:
网络设备,其包括如第四方面所述的反馈信息的接收装置;
用户设备,其包括如第二方面所述的反馈信息的发送装置。
本发明实施例的有益效果在于:按照码块组数目和/或传输块数目对多个载波进行分组,并且分别确定每个分组内载波所对应的反馈信息;由此,不仅能够预留正确的反馈信息的比特数目,而且能够降低反馈信息的开销或者DCI信令的开销,从而减少或避免资源的浪费。
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。
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是使用DAI动态决定反馈信息的一示例图;
图2是图1的DAI没有使用2比特限制的示例图;
图3是本发明实施例的通信***的一示意图;
图4是载波聚合情况下的数据传输的一个示例图;
图5是本发明实施例的反馈信息的发送方法的一示意图;
图6是本发明实施例的反馈信息的接收方法的一示意图;
图7是本发明实施例的反馈信息的发送和接收方法的一示意图;
图8是本发明实施例的使用DAI动态决定反馈信息的一示例图;
图9是图8的DAI没有使用2比特限制的示例图;
图10是本发明实施例的使用DAI动态决定反馈信息的另一示例图;
图11是图10的DAI没有使用4比特限制的示例图;
图12是载波聚合情况下的数据传输的另一个示例图;
图13是本发明实施例的使用DAI动态决定反馈信息的另一示例图;
图14是本发明实施例的使用DAI动态决定反馈信息的另一示例图;
图15是载波聚合情况下的数据传输的另一个示例图;
图16是本发明实施例的使用DAI动态决定反馈信息的另一示例图;
图17是本发明实施例的反馈信息的发送装置的一示意图;
图18是本发明实施例的反馈信息的接收装置的一示意图;
图19是本发明实施例的网络设备的一示意图;
图20是本发明实施例的用户设备的一示意图。
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。
在本发明实施例中,术语“第一”、“第二”等用于对不同元素从称谓上进行区分,但并不表示这些元素的空间排列或时间顺序等,这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在,但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本发明实施例中,单数形式“一”、“该”等包括复数形式,应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义;此外术语“所述”应理解为既包括单数形式也包括复数形式,除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”,术语“基于”应理解为“至少部分基于……”,除非上下
文另外明确指出。
在本发明实施例中,术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络,例如长期演进(LTE,Long Term Evolution)、增强的长期演进(LTE-A,LTE-Advanced)、宽带码分多址接入(WCDMA,Wideband Code Division Multiple Access)、高速报文接入(HSPA,High-Speed Packet Access)等等。
并且,通信***中设备之间的通信可以根据任意阶段的通信协议进行,例如可以包括但不限于如下通信协议:1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及未来的5G、新无线(NR,New Radio)等等,和/或其他目前已知或未来将被开发的通信协议。
在本发明实施例中,术语“网络设备”例如是指通信***中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备:基站(BS,Base Station)、接入点(AP、Access Point)、发送接收点(TRP,Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC,Radio Network Controller)、基站控制器(BSC,Base Station Controller)等等。
其中,基站可以包括但不限于:节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB),等等,此外还可包括远端无线头(RRH,Remote Radio Head)、远端无线单元(RRU,Remote Radio Unit)、中继(relay)或者低功率节点(例如femto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能,每个基站可以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。
在本发明实施例中,术语“用户设备”(UE,User Equipment)或者“终端设备”(TE,Terminal Equipment)例如是指通过网络设备接入通信网络并接收网络服务的设备。用户设备可以是固定的或移动的,并且也可以称为移动台(MS,Mobile Station)、终端、用户台(SS,Subscriber Station)、接入终端(AT,Access Terminal)、站,等等。
其中,用户设备可以包括但不限于如下设备:蜂窝电话(Cellular Phone)、个人数字助理(PDA,Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机,
等等。
再例如,在物联网(IoT,Internet of Things)等场景下,用户设备还可以是进行监控或测量的机器或装置,例如可以包括但不限于:机器类通信(MTC,Machine Type Communication)终端、车载通信终端、设备到设备(D2D,Device to Device)终端、机器到机器(M2M,Machine to Machine)终端,等等。
以下通过示例对本发明实施例的场景进行说明,但本发明不限于此。
图3是本发明实施例的通信***的一示意图,示意性说明了以用户设备和网络设备为例的情况,如图3所示,通信***300可以包括网络设备301和用户设备302(为简单起见,图3仅以一个用户设备和一个网络设备为例进行说明,但本发明不限于此)。
在本发明实施例中,网络设备301和用户设备302之间可以进行现有的业务或者未来可实施的业务。例如,这些业务可以包括但不限于:增强的移动宽带(eMBB,enhanced Mobile Broadband)、大规模机器类型通信(mMTC,massive Machine Type Communication)和高可靠低时延通信(URLLC,Ultra-Reliable and Low-Latency Communication),等等。
未来5G通信***可以支持更加灵活的HARQ时序。例如即使对于FDD***,也存在着用户设备需要在一个传输时间间隔(TTI,Transmission Time Interval,例如,时隙slot等)内,对多个TTI内调度的数据进行HARQ-ACK反馈的情形。
此外,对于未来5G通信***,增加了基于CBG重传的支持。1个TB可以被划分为多个CBG,数据重传以CBG为单位,从而可以减少重传开销。相应地,HARQ-ACK反馈也可以针对CBG进行,因此1个TB可以对应多个HARQ-ACK比特。
对于基于CBG的HARQ-ACK反馈,LTE中的传统DAI指示方法可能不再普遍适用。原因在于LTE中DAI指示的是PDCCH/EPDCCH数目,当用户设备漏检某一个PDCCH时,用户设备能够基于total DAI得知丢失了1个PDCCH/EPDCCH调度的TB,并为其预留1比特HARQ-ACK的余量。但是,对于基于CBG的HARQ-ACK,如果不同载波所支持的CBG数目不同,用户设备无法通过total DAI得知该TB所包含的CBG数目,因而无法为其预留正确的HARQ-ACK比特数目。
对于这一问题,可以通过对LTE的DAI机制进行扩展来得到解决。
图4是载波聚合情况下的数据传输的一个示例图,这里假设每个载波最多调度一
个TB传输,聚合窗的概念依然存在。在频率域上,用户设备需要对多个载波调度的TB进行HARQ-ACK反馈;在时间域上,由于灵活的HARQ时序,无论FDD还是TDD,用户设备都可能需要对多个slot内调度的TB进行反馈。图4与图1或2的不同之处在于,图4的不同载波被独立地配置了可能不同的CBG数目,因此图4在理想条件下,需要32比特的HARQ-ACK反馈。
为了预留正确的HARQ-ACK比特数目,一种方法例如是不改变现有counter DAI和total DAI的含义及指示方法,而是按照所有载波中最大的CBG数目预留和产生HARQ-ACK比特。例如,对于图4的示例,意味着所有调度的TB均按照4比特产生HARQ-ACK反馈,因此图4中调度的13个TB将对应于52比特的HARQ-ACK反馈。相比于理想情况下的32比特,HARQ-ACK反馈开销有较大幅度的提升。
另外一种方法例如可以改变现有counter DAI和total DAI含义,例如令DAI不再指示PDCCH/EPDCCH数目(对于单TB传输模式,可以简单地理解为调度的TB数目),而是指示CBG数目。由于CBG数目大于TB数目,需要增加DAI比特数来满足CBG寻址的要求。假设counter DAI和total DAI字段均从原来的2比特增加到4比特,那么在图4所示的聚合窗内,下行DCI的开销将增加52比特。虽然此时能够达到理想的32比特的HARQ-ACK反馈,其代价是增加了DCI信令的开销。
针对上述问题,本发明实施例提供一种动态决定反馈信息(例如称为HARQ-ACK码书)的方法和装置,通过对载波进行分组并重新排列,并且在各分组内独立定义和使用counter DAI和total DAI,可以支持基于CBG的HARQ-ACK反馈,并且可以有效地降低反馈信息的开销或者DCI信令的开销。
实施例1
本发明实施例提供一种反馈信息的发送和接收方法。
图5是本发明实施例的反馈信息的发送方法的一示意图,从用户设备侧进行说明。如图5所示,所述方法包括:
步骤501,用户设备按照码块组数目和/或传输块数目对多个载波进行分组;
步骤502,用户设备接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;
步骤503,用户设备分别确定每个分组内所述载波所对应的反馈信息;以及
步骤504,用户设备将各个分组对应的反馈信息进行级联后发送给所述网络设备。
在本实施例中,用于所述分组的规则可以被标准预先定义,或者也可以由所述网络设备通过信令通知给用户设备。例如可以通过无线资源控制(RRC,Radio Resource Control)信令进行通知;但本发明不限于此。由此,网络设备和用户设备对于如何进行分组可以达成一致。
在本实施例中,所述时间单元可以是如下的任意一种:帧、子帧、时隙、小时隙(mimi-slot)、传输时间间隔(TTI);但本发明不限于此,还可以是其他更长或更短的时间间隔。以下将以子帧或者时隙为例进行说明。
在本实施例中,所述下行分配索引在每个分组内分别进行计数。例如counter DAI和total DAI在分组1中和分组2中分别计数,这两个分组中counter DAI和total DAI的计数过程是独立的,即counter DAI和total DAI在分组1中的计数过程可以不同于counter DAI和total DAI在分组2中的计数过程。
在本实施例中,在跨载波调度时,DAI(或者PDCCH)可以是来自于一个载波的。因此,数据可以在多个载波和多个时间单元上发送,而对应的DAI可以在一个或多个载波和多个时间单元上发送。关于具体如何发送数据和具体如何发送DAI,可以参考相关技术,本发明不对此进行限制。
图6是本发明实施例的反馈信息的接收方法的一示意图,从网络设备侧进行说明。如图6所示,所述方法包括:
步骤601,网络设备按照码块组数目和/或传输块数目对多个载波进行分组;
步骤602,网络设备在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;
步骤603,网络设备接收用户设备发送的反馈信息;以及
步骤604,网络设备根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
在本实施例中,所述数据例如可以通过PDSCH发送,所述下行分配索引(DAI)可以通过PDCCH或EPDCCH发送。每个载波可以支持一个或多个TB,每个TB可以划分为一个或多个CBG,所述数据以CBG为单位进行传输或者重传。所述反馈信息可以称为HARQ-ACK码书,可以是一个比特序列。
图7是本发明实施例的反馈信息的发送和接收方法的一示意图,从网络设备侧以及用户设备侧进行说明。如图7所示,所述方法包括:
步骤701,网络设备通过信令向用户设备发送分组规则。
步骤702,网络设备按照码块组数目和/或传输块数目对多个载波进行分组;
步骤703,用户设备按照码块组数目和/或传输块数目对多个载波进行分组;
步骤704,网络设备在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;
步骤705,用户设备分别确定每个分组内所述载波所对应的反馈信息;
步骤706,用户设备将各个分组对应的反馈信息进行级联;
步骤707,网络设备接收用户设备发送的所述反馈信息;以及
步骤708,网络设备根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
关于具体如何分组以及具体如何确定每个分组内载波的反馈信息,如后实施例2-6所述。其中实施例2至6可以单独实行,也可以任意组合起来实行,本发明不限于此。
值得注意的是,以上图5至7仅对本发明实施例进行了示意性说明,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5至7的记载。
由上述实施例可知,按照码块组数目和/或传输块数目对多个载波进行分组,并且分别确定每个分组内载波所对应的反馈信息;由此,不仅能够预留正确的反馈信息的比特数目,而且能够降低反馈信息的开销或者DCI信令的开销,从而减少或避免资源的浪费。
实施例2
本发明实施例在实施例1的基础上,对于载波最多调度一个TB的情况进行说明。
在本实施例中,可以分别将具有相同CBG数目的多个载波划分到同一组以形成一个或多个第一组;将剩余的不具有相同CBG数目的一个或多个载波划分为同一组
以形成一个第二组。
在一个实施方式中,对于每个所述第一组,可以分别按照所述相同的CBG数目确定所述多个载波所对应的反馈信息的比特数目。对于所述第二组,可以按照所述一个或多个载波中最大的CBG数目确定所述一个或多个载波所对应的反馈信息的比特数目。
图8是本发明实施例的使用DAI动态决定反馈信息的一示例图,其中载波以及CBG配置与图4相同。如图8所示,在根据CBG数目进行分组后,具有相同CBG数目的载波(载波数大于等于2)被分为同一组(例如分组1、分组2),其他所有剩余载波组成一组(例如分组3)。因此,分组1内载波CBG数目均为2,分组2内载波CBG数目均为3,分组3内的载波CBG数目各不相同。
为了获得唯一的载波分组结果,可以在每个载波分组内,定义载波编号遵循从小到大的排列顺序。对于具有相同CBG数目的载波分组(例如分组1、分组2),可以令counter DAI和total DAI仍服从LTE定义,即指示PDCCH/EPDCCH数目。在图8的示例中也可以等效为指示TB数目。
假设这些具有相同CBG数目的分组(可以称为第一组)内所有载波的CBG数为N,用户设备将为每个可能调度的TB预留N比特HARQ-ACK,对应所述TB所包含的N个CBG。由于第一组内各个载波的CBG数均相同,不会造成HARQ-ACK码书尺寸的歧义。对于各个第一组,例如分组1和分组2,没有增加任何DCI开销,同时对应于分组的HARQ-ACK码书也没有额外增加比特开销。
对于具有不同CBG数目的载波分组(可以称为第二组,例如分组3),可以使用与分组1和分组2完全独立的DAI机制。例如,可以令counter DAI和total DAI仍指示PDCCH/EPDCCH数目,在图8中也等效为指示TB数目,按照分组3内最大的CBG数目(例如CBG=4)预留HARQ-ACK比特。此时分组3对应的HARQ-ACK会比理想情况有所增加,但仅仅是分组3内的载波HARQ-ACK反馈量有所增加。而对于不使用载波分组的传统方法,按照最大CBG数目预留反馈比特数,将使所有载波的HARQ-ACK反馈量都相应增加。
图9是图8的DAI没有使用2比特限制的示例图,示出了不考虑2比特DAI位宽限制,使用真实计数时的DAI取值范围。对HARQ-ACK反馈量进行对比,理想情况下,图4所示的情况需要32比特HARQ-ACK反馈,本实施方式的方法需要38比
特HARQ-ACK反馈,而上述传统方法将需要52比特HARQ-ACK反馈。
在另一个实施方式中,对于每个所述第一组,可以分别按照所述相同的CBG数目确定所述多个载波所对应的反馈信息的比特数目。对于所述第二组,可以按照所述一个或多个载波各自的CBG数目确定所述一个或多个载波所对应的反馈信息的比特数目。其中,所述第二组内所述一个或多个载波所对应的所述DAI用于指示CBG数目。
仍以图4中的载波和CBG配置为例。载波分组以及分组1、分组2的DAI指示与上述实施方式相同,不同之处在于分组3的DAI机制。这里使用新的DAI定义,即令counter DAI和total DAI指示CBG数目。
如前所述,由于CBG数目大于TB数目,需要增加counter DAI和total DAI的比特数来满足CBG寻址要求。此时仅仅分组3内的DCI开销会有所增加。而对于不使用载波分组的传统方法,增加DAI比特数将使所有载波的DCI开销都相应增加。
图10是本发明实施例的使用DAI动态决定反馈信息的另一示例图,其中载波以及CBG配置与图4相同。如图10所示,counter DAI使用4比特用来指示对应CBG的HARQ-ACK比特的起始位置,total DAI使用4比特用来指示截至当前时隙的总CBG数目。例如,用户设备在时隙#n的载波5上接收到PDCCH,即可知道当前共有8比特HARQ-ACK,并将对应载波5的CBG的3比特HARQ-ACK排列在码书中编号为5、6、7的位置。
图11是图10的DAI没有使用4比特限制的示例图,示出了不考虑4比特DAI位宽限制,使用真实计数时的DAI取值范围。为简单起见,图10和图11没有示出分组后的情况,采用分组后的情形可以参考图8和9。
以DCI开销增加为代价,本实施方式的方法和传统方法均能够达到理想的32比特HARQ-ACK反馈开销。假设counter DAI和total DAI字段均从原来的2比特增加到4比特,对两种方法所带来的DCI开销增加量进行对比,本实施方式的DCI增加量为16比特,而上述传统方法DCI增加量为52比特。
值得注意的是,以上仅示意性说明了具体如何分组以及具体如何确定每个分组内载波的反馈信息,但本发明不限于此。对于具有不同CBG数目的分组,还可以使用其他方法来确定HARQ-ACK码书,本发明实施例对此不作限定。
在本实施例中,在所述第二组只有一个载波的情况下,还可以单独地将所述一个
载波所对应的反馈信息发送给所述网络设备。
即,如果具有不同CBG数目的分组(第二分组)仅包含单个载波,例如图8中分组3仅包含1个载波,也可以对该载波独立地进行HARQ-ACK反馈,而不与其他分组(第一分组)共同组成HARQ-ACK码书。
例如,可以使用其他PUCCH格式进行HARQ-ACK反馈,例如使用PUCCH format1a/1b等,反馈1到2比特ACK/NACK。
实施例3
本发明实施例在实施例1的基础上,对于载波最多可以调度多个TB的情况进行说明。在实施例2中,在所述载波最多支持一个TB的情况下,所述载波具有的CBG数目为该TB中CBG的数目。在实施例3中,在所述载波最多支持多个TB的情况下,所述载波具有的CBG数目可以为所述多个TB中CBG的数目之和。
例如,本实施例3对上述实施例2加以扩展,使其能够应用于载波配置了空分复用传输模式的场景,即载波最多能够调度2个下行TB传输。对于载波分组重排,按照每个载波包含的所有TB的总CBG数目进行分组,即将具有相同的总CBG数目的载波分为一组。在各个载波分组内,载波按照编号从小到大顺序排列。
对于总CBG数相同的载波分组(可以称为第一组),counter DAI和total DAI指示PDCCH/EPDCCH数目,按照总CBG数目预留HARQ-ACK比特。对于总CBG数不同的载波分组(可以称为第二组),按照分组内最大的总CBG数目预留HARQ-ACK比特,或者通过增加counter DAI和total DAI比特来指示CBG数目。
图12是载波聚合情况下的数据传输的另一个示例图,这里假设每个载波最多调度两个TB传输,聚合窗的概念依然存在。对于图12的用户设备,所聚合的每个载波均支持空分复用传输模式,各个时隙内的PDCCH/EPDCCH均可调度2个TB传输。实际得到调度的时隙如图12中阴影所示。
在传统方法中,可以按照最大的TB数目(即2)和最大的CBG数目(即4)预留HARQ-ACK反馈比特,因此每个时隙需要8比特HARQ-ACK。图12中有15个时隙得到调度,因此总共需要120比特HARQ-ACK反馈。
图13是本发明实施例的使用DAI动态决定反馈信息的另一示例图,示出了本发明实施例的载波分组重排以及counter DAI、total DAI指示。对于载波分组1~3(第一
组),每个分组内的载波具有相同的总CBG数目,因此可以按照各自的总CBG数目预留HARQ-ACK比特。对于载波分组4(第二组),载波5和载波2具有不同的总CBG数目,这里假设按照最大的总CBG数目(即7)来预留HARQ-ACK比特。
因此,分组1对应12比特HARQ-ACK,分组2对应10比特HARQ-ACK,分组3对应30比特HARQ-ACK,分组4对应28比特HARQ-ACK,总共需要80比特HARQ-ACK反馈,相比于上述传统方法的120比特HARQ-ACK反馈,本发明实施例节省了约33%的反馈开销。
每个载波最多能够调度2个TB,并不意味总是调度2个TB,在实际调度中也可能只调度了1个TB。但HARQ-ACK比特始终按照2个TB进行预留,只要预先定义好各TB所对应HARQ-ACK比特的起止位置,就不会产生任何歧义。
例如对于图13的3号载波CC#3,当调度2个TB时,其对应5比特HARQ-ACK,可以定义如下:比特b0、b1对应TB#0的2比特HARQ-ACK,比特b2、b3、b4对应TB#1的3比特HARQ-ACK。当仅调度1个TB时(可能是TB#0,也可能是TB#1),可以令该TB对应的HARQ-ACK的起始位置始终从b0开始,后续比特依次排列。该原则普遍适用于按照某一最大数目预留HARQ-ACK比特的情形,例如适用于本发明的所有实施例。
实施例4
本发明实施例在实施例1的基础上,对于载波最多可以调度多个TB的情况进行说明。在实施例2中,在所述载波最多支持一个TB的情况下,所述载波具有的CBG数目为该TB中CBG的数目。在实施例4中,在所述载波最多支持多个TB的情况下,所述载波具有的CBG数目可以为所述多个TB中的最大CBG数目。
例如,本实施例给出与实施例3不同的另外一种方法,同样适用于每个载波可以最多调度2个TB传输的情形,即支持空分复用传输模式。对于载波分组重排,按照每个载波的所有TB中的最大CBG数目进行分组,即将具有相同的最大CBG数的载波分为一组。在各个载波分组内,载波按照编号从小到大顺序排列。在每个载波分组内,counter DAI和total DAI指示PDCCH/EPDCCH数目,按照组内最大的TB数目和最大的CBG数目乘积预留HARQ-ACK比特。
图14是本发明实施例的使用DAI动态决定反馈信息的另一示例图,示出了本发
明实施例的载波分组重排以及counter DAI、total DAI指示。同样以图12的配置为例,这里根据载波调度的所有TB(图14中为2个TB)中最大的CBG数目进行载波分组重排,将具有相同的最大CBG数的载波分为一组。
如图14所示,CC#1和CC#6最大的CBG数目均为2,被划分到分组1;CC#3、CC#4和CC#5最大的CBG数目均为3,被划分到分组2;CC#0、CC#2和CC#7最大的CBG数目均为4,被划分到分组3。
在本实施例中,各个分组内的载波按照载波编号从小到大顺序排列。在每个分组内,按照组内最大的TB数目和最大的CBG数目乘积预留HARQ-ACK反馈比特。在每个分组内令counter DAI和total DAI指示PDCCH/EPDCCH数目。
因此,分组1内每个调度时隙对应4比特HARQ-ACK反馈,分组2的每个调度时隙对应6比特HARQ-ACK反馈,分组3内每个调度时隙对应8比特HARQ-ACK反馈。因此,本实施例的方法总共需要96比特HARQ-ACK反馈,相比于上述传统方法的120比特HARQ-ACK反馈,节省了20%的反馈开销。
同样,每个载波最多能够调度2个TB,并不意味总是调度2个TB,在实际调度中也可能只调度了1个TB。但HARQ-ACK比特始终按照2个TB进行预留,只要预先定义好各TB所对应HARQ-ACK比特的起止位置,就不会产生任何歧义。
例如对于图14的3号载波CC#3,实施例4的方法为其预留了6比特HARQ-ACK,当调度2个TB时,其对应5比特HARQ-ACK,可以定义为比特b0、b1对应TB#0的2比特HARQ-ACK,比特b2、b3、b4对应TB#1的3比特HARQ-ACK。当仅调度1个TB时,可以令该TB对应的HARQ-ACK的起始位置始终从b0开始。
实施例5
本发明实施例在实施例1的基础上,对用户设备所配置的载波中同时存在最多1个TB调度和最多2个TB调度的情况进行说明。本实施例对于载波分组重排,可以先按照所支持的最大TB数目进行分组,即将具有相同最大TB数的载波分为一组。然后,在具有相同最大TB数的载波分组内,再次进行分组,分组规则可以按照实施例2至实施例4的任意一种方法。在最终获得的各个载波分组内,定义各自的counter DAI和total DAI指示。
在本实施例中,可以分别将具有相同TB数目的多个载波划分到同一组以形成一
个或多个第三组;将剩余的不具有相同TB数目的一个或多个载波划分为同一组以形成一个第四组。
此外,对于每个所述第三组,可以分别将具有相同或相近CBG数目的多个载波划分到同一组以形成一个或多个第五组;和/或;对于所述第四组,可以将具有相同或相近CBG数目的多个载波划分到同一组以形成一个或多个第六组。
图15是载波聚合情况下的数据传输的另一个示例图,这里假设载波最多调度一个或者两个TB传输,聚合窗的概念依然存在。例如,如图15所示,载波2、4、5最多支持1个TB传输,其余载波最多可以支持2个TB传输。实际得到调度的时隙由阴影标记。
在传统方法中,可以按照最大的TB数和最大的CBG数预留HARQ-ACK比特,此时需要120比特HARQ-ACK反馈。
图16是本发明实施例的使用DAI动态决定反馈信息的另一示例图,示出了本发明实施例的载波分组重排以及counter DAI、total DAI指示。如图16所示,其中载波0、1、3、6、7均最多支持2个TB传输,可以划分为同一组(第三组);载波2、4、5最多支持1个TB传输,可以划分为同一组(第四组),图16中用分组3表示。
此外,对于载波0、1、3、6、7,又可以按照每个载波的总CBG数目进行再次分组,即可以将该第三组又分为分组1和分组2(第五组)。分组1中载波的总CBG数目均为3,分组2中载波的总CBG数目均为6。Counter DAI和total DAI在各个载波分组内独立定义,这里假设DAI均指示PDCCH/EPDCCH数目。
对于分组1,需要15比特HARQ-ACK,分组2需要30比特HARQ-ACK。对于分组3,假设按照最大CBG数目预留HARQ-ACK比特,则需要20比特HARQ-ACK。因此,本实施例5的方法总共需要65比特HARQ-ACK,相比传统方法的120比特HARQ-ACK反馈,可以节省约46%的反馈开销。
实施例6
本发明实施例在实施例1的基础上,对具有相近CBG数目的情况进行说明。
在本实施例中,可以分别将具有相近CBG数目的多个载波划分到同一组以形成一个或多个第一组;将剩余的不具有相近CBG数目的一个或多个载波划分为同一组以形成一个第二组。
在本实施例中,所述具有相近CBG数目的多个载波可以为:CBG数目之差不超过预设阈值的多个载波;但本发明不限于此。对于每个所述第一组,可以分别按照所述相近CBG数目中的最大CBG数目确定所述多个载波所对应的反馈信息的比特数目。
例如对于某些配置,可能不存在具有相同CBG数目的载波,此时可以采用其他方法对载波进行分组。例如将CBG数目相差不超过n的载波分为一组,n值可以灵活地调整,通常期望n取较小值。对同一分组内的载波,只要CBG数目相差不大,按照最大CBG数预留HARQ-ACK比特就不会造成严重的浪费,因此有利于节省HARQ-ACK反馈开销。
实施例7
本发明实施例提供一种反馈信息的发送装置。该反馈信息的发送装置例如可以是用户设备,也可以是配置于用户设备的某个或某些部件或者组件。本实施例7与实施例1至6相同的内容不再赘述。
图17是本发明实施例的反馈信息的发送装置的一示意图,如图17所示,反馈信息的发送装置1700包括:
分组单元1701,其按照码块组数目和/或传输块数目对多个载波进行分组;
接收单元1702,其接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;
确定单元1703,其分别确定每个分组内所述载波所对应的反馈信息;以及
发送单元1704,其将各个分组对应的反馈信息进行级联后发送给所述网络设备。
在本实施例中,用于所述分组的规则被预先定义,或者由所述网络设备通过信令进行通知。并且,所述下行分配索引在每个分组内分别进行计数。
在本实施例中,分组单元1701可以分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第一组;将剩余的不具有相同或相近码块组数目的一个或多个载波划分为同一组以形成一个第二组。
在本实施例中,在所述载波最多支持一个传输块的情况下,所述载波具有的码块组数目为所述一个传输块中码块组的数目;在所述载波最多支持多个传输块的情况下,所述载波具有的码块组数目为所述多个传输块中码块组数目之和或者所述多个传
输块中的最大的码块组数目。例如,所述具有相近码块组数目的多个载波为码块组数目之差不超过预设阈值的多个载波。
在本实施例中,发送单元1704还可以用于在所述第二组只有一个载波的情况下,单独地将所述一个载波所对应的反馈信息发送给所述网络设备。
在本实施例中,确定单元1703对于每个所述第一组,可以分别按照所述相同码块组数目确定所述多个载波所对应的反馈信息的比特数目,或者,分别按照所述相近码块组数目中的最大码块组数目确定所述多个载波所对应的反馈信息的比特数目。
在本实施例中,确定单元1703对于所述第二组,可以按照所述一个或多个载波中最大的码块组数目确定所述一个或多个载波所对应的反馈信息的比特数目。
在本实施例中,确定单元1703对于所述第二组,还可以按照所述一个或多个载波各自的码块组数目确定所述一个或多个载波所对应的反馈信息的比特数目。其中,所述第二组内所述一个或多个载波所对应的所述下行分配索引用于指示所述码块组数目。
在本实施例中,分组单元1701还可以分别将具有相同传输块数目的多个载波划分到同一组以形成一个或多个第三组;将剩余的不具有相同传输块数目的一个或多个载波划分为同一组以形成一个第四组。
在本实施例中,分组单元1701还可以用于:对于每个所述第三组,分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第五组;和/或;对于所述第四组,将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第六组。
值得注意的是,以上仅对与本发明相关的各部件或模块进行了说明,但本发明不限于此。反馈信息的发送装置1700还可以包括其他部件或者模块,关于这些部件或者模块的具体内容,可以参考相关技术。
由上述实施例可知,按照码块组数目和/或传输块数目对多个载波进行分组,并且分别确定每个分组内载波所对应的反馈信息;由此,不仅能够预留正确的反馈信息的比特数目,而且能够降低反馈信息的开销或者DCI信令的开销,从而减少或避免资源的浪费。
实施例8
本发明实施例提供一种反馈信息的接收装置。该反馈信息的接收装置例如可以是网络设备,也可以是配置于网络设备的某个或某些部件或者组件。本实施例8与实施例1至6相同的内容不再赘述。
图18是本发明实施例的反馈信息的接收装置的一示意图,如图18所示,反馈信息的接收装置1800包括:
分组单元1801,其按照码块组数目和/或传输块数目对多个载波进行分组;
发送单元1802,其在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;
接收单元1803,其接收所述用户设备发送的反馈信息;以及
确定单元1804,其根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
在本实施例中,用于所述分组的规则可以被预先定义,或者可以通过信令通知给所述用户设备;并且所述下行分配索引在每个分组内分别进行计数。
在本实施例中,分组单元1801可以分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第一组;将剩余的不具有相同或相近码块组数目的一个或多个载波划分为同一组以形成一个第二组。
在本实施例中,在所述载波最多支持一个传输块的情况下,所述载波具有的码块组数目为所述一个传输块中码块组的数目;在所述载波最多支持多个传输块的情况下,所述载波具有的码块组数目为所述多个传输块中码块组数目之和或者所述多个传输块中的最大的码块组数目。
在本实施例中,分组单元1801可以分别将具有相同传输块数目的多个载波划分到同一组以形成一个或多个第三组;将剩余的不具有相同传输块数目的一个或多个载波划分为同一组以形成一个第四组。
在本实施例中,分组单元1801还可以用于:对于每个所述第三组,分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第五组;和/或;对于所述第四组,将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第六组。
值得注意的是,以上仅对与本发明相关的各部件或模块进行了说明,但本发明不限于此。反馈信息的接收装置1800还可以包括其他部件或者模块,关于这些部件或者模块的具体内容,可以参考相关技术。
由上述实施例可知,按照码块组数目和/或传输块数目对多个载波进行分组,并且分别确定每个分组内载波所对应的反馈信息;由此,不仅能够预留正确的反馈信息的比特数目,而且能够降低反馈信息的开销或者DCI信令的开销,从而减少或避免资源的浪费。
实施例9
本发明实施例还提供一种通信***,可以参考图3,与实施例1至8相同的内容不再赘述。在本实施例中,通信***300可以包括:
网络设备301,其配置有如实施例8所述的反馈信息的接收装置1800。
用户设备302,其配置有如实施例7所述的反馈信息的发送装置1700。
本发明实施例还提供一种网络设备,例如可以是基站,但本发明不限于此,还可以是其他的网络设备。
图19是本发明实施例的网络设备的构成示意图。如图19所示,网络设备1900可以包括:处理器1910(例如中央处理器CPU)和存储器1920;存储器1920耦合到处理器1910。其中该存储器1920可存储各种数据;此外还存储信息处理的程序1930,并且在处理器1910的控制下执行该程序1930。
例如,处理器1910可以被配置为执行程序1930而进行如下的控制:按照码块组数目和/或传输块数目对多个载波进行分组;在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;接收所述用户设备发送的反馈信息;以及根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
此外,如图19所示,网络设备1900还可以包括:收发机1940和天线1950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,网络设备1900也并不是必须要包括图19中所示的所有部件;此外,网络设备1900还可以包括图19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用户设备,但本发明不限于此,还可以是其他的设备。
图20是本发明实施例的用户设备的示意图。如图20所示,该用户设备2000可以包括处理器2010和存储器2020;存储器2020存储有数据和程序,并耦合到处理器2010。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。
例如,处理器2010可以被配置为进行如下的控制:按照码块组数目和/或传输块数目对多个载波进行分组;接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;分别确定每个分组内所述载波所对应的反馈信息;以及将各个分组对应的反馈信息进行级联后发送给所述网络设备。
如图20所示,该用户设备2000还可以包括:通信模块2030、输入单元2040、显示器2050、电源2060。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2000也并不是必须要包括图20中所示的所有部件,上述部件并不是必需的;此外,用户设备2000还可以包括图20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计算机可读程序,其中当在网络设备中执行所述程序时,所述程序使得所述网络设备执行实施例1至6所述的反馈信息的接收方法。
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网络设备执行实施例1至6所述的反馈信息的接收方法。
本发明实施例还提供一种计算机可读程序,其中当在用户设备中执行所述程序时,所述程序使得所述用户设备执行实施例1至6所述的反馈信息的发送方法。
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用户设备执行实施例1至6所述的反馈信息的发送方法。
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17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,分组单元和确定单元等),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5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***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发明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 (20)
- 一种反馈信息的发送装置,包括:分组单元,其按照码块组数目和/或传输块数目对多个载波进行分组;接收单元,其接收网络设备在所述多个载波和多个时间单元上发送的数据,以及在一个或多个载波和多个时间单元上发送的用于配置反馈信息的下行分配索引;确定单元,其分别确定每个分组内所述载波所对应的反馈信息;以及发送单元,其将各个分组对应的反馈信息进行级联后发送给所述网络设备。
- 根据权利要求1所述的装置,其中,用于所述分组的规则被预先定义,或者由所述网络设备通过信令进行通知;并且所述下行分配索引在每个分组内分别进行计数。
- 根据权利要求1所述的装置,其中,所述分组单元分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第一组;将剩余的不具有相同或相近码块组数目的一个或多个载波划分为同一组以形成一个第二组。
- 根据权利要求3所述的装置,其中,在所述载波最多支持一个传输块的情况下,所述载波具有的码块组数目为所述一个传输块中码块组的数目;在所述载波最多支持多个传输块的情况下,所述载波具有的码块组数目为所述多个传输块中码块组数目之和或者所述多个传输块中的最大的码块组数目。
- 根据权利要求3所述的装置,其中,所述具有相近码块组数目的多个载波为码块组数目之差不超过预设阈值的多个载波。
- 根据权利要求3所述的装置,其中,所述发送单元还用于在所述第二组只有一个载波的情况下,单独地将所述一个载波所对应的反馈信息发送给所述网络设备。
- 根据权利要求3所述的装置,其中,所述确定单元对于每个所述第一组,分别按照所述相同码块组数目确定所述多个载波所对应的反馈信息的比特数目,或者,分别按照所述相近码块组数目中的最大码块组数目确定所述多个载波所对应的反馈信息的比特数目。
- 根据权利要求7所述的装置,其中,所述确定单元对于所述第二组,按照所述一个或多个载波中最大的码块组数目确定所述一个或多个载波所对应的反馈信息的比特数目。
- 根据权利要求7所述的装置,其中,所述确定单元对于所述第二组,按照所述一个或多个载波各自的码块组数目确定所述一个或多个载波所对应的反馈信息的比特数目。
- 根据权利要求9所述的装置,其中,所述第二组内所述一个或多个载波所对应的所述下行分配索引用于指示所述码块组数目。
- 根据权利要求1所述的装置,其中,所述分组单元分别将具有相同传输块数目的多个载波划分到同一组以形成一个或多个第三组;将剩余的不具有相同传输块数目的一个或多个载波划分为同一组以形成一个第四组。
- 根据权利要求11所述的装置,其中,所述分组单元还用于对于每个所述第三组,分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第五组。
- 根据权利要求11所述的装置,其中,所述分组单元还用于对于所述第四组,将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第六组。
- 一种反馈信息的接收装置,包括:分组单元,其按照码块组数目和/或传输块数目对多个载波进行分组;发送单元,其在所述多个载波和多个时间单元上向用户设备发送数据,以及在一个或多个载波和多个时间单元上向所述用户设备发送用于配置反馈信息的下行分配索引;接收单元,其接收所述用户设备发送的反馈信息;以及确定单元,其根据所述分组确定在所述多个载波和多个时间单元上发送的所述数据所对应的反馈信息。
- 根据权利要求14所述的装置,其中,用于所述分组的规则被预先定义,或者通过信令通知给所述用户设备;并且所述下行分配索引在每个分组内分别进行计数。
- 根据权利要求14所述的装置,其中,所述分组单元分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第一组;将剩余的不具有相同或相近码块组数目的一个或多个载波划分为同一组以形成一个第二组。
- 根据权利要求16所述的装置,其中,在所述载波最多支持一个传输块的情况下,所述载波具有的码块组数目为所述一个传输块中码块组的数目;在所述载波最 多支持多个传输块的情况下,所述载波具有的码块组数目为所述多个传输块中码块组数目之和或者所述多个传输块中的最大的码块组数目。
- 根据权利要求14所述的装置,其中,所述分组单元分别将具有相同传输块数目的多个载波划分到同一组以形成一个或多个第三组;将剩余的不具有相同传输块数目的一个或多个载波划分为同一组以形成一个第四组。
- 根据权利要求18所述的装置,其中,所述分组单元还用于对于每个所述第三组,分别将具有相同或相近码块组数目的多个载波划分到同一组以形成一个或多个第五组。
- 一种通信***,包括:用户设备,其包括权利要求1所述的反馈信息的发送装置;网络设备,其包括权利要求14所述的反馈信息的接收装置。
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