CN112970282B - Methods, devices and computer readable media for HARQ process configuration - Google Patents

Methods, devices and computer readable media for HARQ process configuration Download PDF

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Publication number
CN112970282B
CN112970282B CN201880099245.0A CN201880099245A CN112970282B CN 112970282 B CN112970282 B CN 112970282B CN 201880099245 A CN201880099245 A CN 201880099245A CN 112970282 B CN112970282 B CN 112970282B
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network device
dci
maximum size
harq buffer
terminal device
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CN112970282A (en
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徐夏刚
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Nokia Shanghai Bell Co Ltd
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Nokia Shanghai Bell Co Ltd
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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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1874—Buffer 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling

Abstract

A method, apparatus, and computer readable medium for HARQ process configuration are disclosed. The primary network device determines the maximum size of the HARQ buffer based on the processing capabilities of the terminal device. The terminal device determines the corresponding HARQ process based on DCI received from the primary network device or from both the primary network device and the cooperating network device.

Description

Methods, devices and computer readable media for HARQ process configuration
Technical Field
Embodiments of the present disclosure relate generally to communication technology and, more particularly, relate to methods, apparatuses, and computer readable media for HARQ process configuration.
Background
In recent years, different communication technologies have been proposed to improve communication performance, such as New Radio (NR) systems. For example, the third generation partnership project (3 GPP) has made significant progress in supporting multiple transmission points (TRP)/beam/panel operations, such as Dynamic Point Selection (DPS) and Dynamic Point Blanking (DPB). NR systems still require further discussion.
Disclosure of Invention
In general, embodiments of the present disclosure relate to a method for HARQ process configuration and corresponding communication device.
In a first aspect, embodiments of the present disclosure provide a network device. The network device includes: at least one processor; and a memory coupled to the at least one processor, the memory having instructions stored therein that, when executed by the at least one processor, cause the network device to: information of processing capabilities of a terminal device is received at a primary network device in a coordinated multipoint (CoMP) system. The network device is further caused to determine, based on the information, a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing. The network device is also caused to generate Downlink Control Information (DCI) based at least in part on a maximum size of the HARQ buffer, the DCI including at least one identification of the HARQ buffer. The network device is also caused to transmit DCI to the terminal device.
In a second aspect, embodiments of the present disclosure provide a terminal device. The terminal device includes: at least one processor; and a memory coupled to the at least one processor, the memory having instructions stored therein that, when executed by the at least one processor, cause the terminal device to: information of processing capabilities of the terminal device is transmitted to a primary network device in a coordinated multipoint (CoMP) system. The terminal device is also caused to receive Downlink Control Information (DCI) generated based at least in part on a maximum size of a HARQ buffer indicating a number of received packets that the terminal device is capable of storing. The terminal device is further caused to decode the DCI to obtain at least one identity of the HARQ buffer.
In a third aspect, embodiments of the present disclosure provide a method. The method comprises the following steps: information of processing capabilities of a terminal device is received at a primary network device in a coordinated multipoint (CoMP) system. The method also includes determining a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device based on the information. The maximum size of the HARQ buffer indicates the number of received packets that the terminal device can store. The method also includes generating Downlink Control Information (DCI) based at least in part on a maximum size of the HARQ buffer, the DCI including at least one identification of the HARQ buffer. The method also includes transmitting the DCI to the terminal device.
In a fourth aspect, embodiments of the present disclosure provide a method. The method comprises the following steps: information of processing capabilities of the terminal device is transmitted to a primary network device in a coordinated multipoint (CoMP) system. The method also includes receiving Downlink Control Information (DCI) generated based at least in part on a maximum size of the HARQ buffer. The maximum size of the HARQ buffer indicates the number of received packets that the terminal device can store. The method further includes decoding the DCI to obtain at least one identity of the HARQ buffer.
In a fifth aspect, embodiments of the present disclosure provide a communication device. The apparatus includes means for receiving, at a primary network device in a coordinated multipoint (CoMP) system, information of a processing capability of a terminal device. The apparatus includes means for determining a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device based on the information, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing. The apparatus also includes means for generating Downlink Control Information (DCI) based at least in part on a maximum size of the HARQ buffer, the DCI including at least one identification of the HARQ buffer. The apparatus also includes means for transmitting the DCI to the terminal device.
In a sixth aspect, embodiments of the present disclosure provide a communication device. The apparatus includes means for transmitting information of processing capabilities of a terminal device to a primary network device in a coordinated multipoint (CoMP) system. The apparatus also includes means for receiving Downlink Control Information (DCI) generated based at least in part on a maximum size of a HARQ buffer indicating a number of received packets that a terminal device is capable of storing. The apparatus also includes means for decoding the DCI to obtain at least one identity of the HARQ buffer.
In a seventh aspect, embodiments of the present disclosure provide a computer-readable medium. The computer-readable medium has stored thereon instructions that, when executed by at least one processing unit of a machine, cause the machine to implement the method according to the first and second aspects.
Other features and advantages of embodiments of the present disclosure will be apparent from the following description of the particular embodiments, when read in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the embodiments of the disclosure.
Drawings
Embodiments of the present disclosure are presented by way of example and their advantages are explained in more detail below with reference to the drawings, in which
Fig. 1 shows a schematic diagram of a communication system according to an embodiment of the present disclosure;
fig. 2 illustrates a flow chart of a method implemented at a communication device according to an embodiment of the disclosure;
fig. 3 illustrates a flow chart of a method implemented at a communication device according to an embodiment of the disclosure;
fig. 4A-4C show schematic diagrams of formats of DCI according to embodiments of the present disclosure; and
fig. 5 shows a schematic diagram of an apparatus according to an embodiment of the present disclosure.
The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements.
Detailed Description
The subject matter described herein will now be discussed with reference to several example embodiments. It should be understood that these embodiments are discussed only for the purpose of enabling those skilled in the art to better understand and thus achieve the subject matter described herein, and do not set forth any limitation on the scope of the subject matter.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two functions or acts illustrated in succession may, in fact, be executed concurrently, or the acts may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
As used herein, the term "communication network" refers to a network that conforms to any suitable communication standard, such as Long Term Evolution (LTE), LTE-advanced (LTE-a), wideband Code Division Multiple Access (WCDMA), high Speed Packet Access (HSPA), and the like. Furthermore, the communication between the terminal device and the network device in the communication network may be performed according to any suitable generation communication protocol, including, but not limited to, a first generation (1G), a second generation (2G), 2.5G, 2.75G, a third generation (3G), a fourth generation (4G), 4.5G, a future fifth generation (5G) communication protocol, and/or any other protocol currently known or to be developed in the future.
Embodiments of the present disclosure may be applied in various communication systems. In view of the rapid development of communications, there will, of course, also be future types of communication technologies and systems that may embody the present disclosure. The scope of the present disclosure should not be limited to only the above-described systems. For purposes of illustration, embodiments of the present disclosure will be described with reference to a 5G communication system.
The term "network device" as used herein includes, but is not limited to, a Base Station (BS), gateway, registration management entity, and other suitable devices in a communication system. The term "base station" or "BS" means a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), an NR NB (also known as a gNB), a Remote Radio Unit (RRU), a Radio Header (RH), a Remote Radio Head (RRH), a relay, a low power node (e.g., femto, pico, etc.).
The term "terminal device" as used herein includes, but is not limited to, "User Equipment (UE)" and other suitable terminal devices capable of communicating with a network device. For example, a "terminal device" may refer to a terminal, mobile Terminal (MT), subscriber Station (SS), portable subscriber station, mobile Station (MS), or Access Terminal (AT).
The term "circuitry" as used herein may refer to one or more or all of the following:
(a) Pure hardware circuit implementations (such as implementations in analog and/or digital circuitry only), and
(b) A combination of hardware circuitry and software, such as (as applicable):
(i) Combination of analog and/or digital hardware circuitry and software/firmware
(ii) A hardware processor (including a digital signal processor) having software, any portion of the software and memory that work together to cause a device such as a mobile phone or server to perform various functions, and
(c) Software (e.g., firmware) is required to operate but may not exist as hardware circuitry and/or a processor, such as a microprocessor or portion of a microprocessor, when operation is not required.
This definition of "circuitry" applies to all uses of this term in this application, including in any claims. As another example, as used in this application, the term "circuitry" also encompasses only hardware circuitry or processor (or multiple processors) or an implementation of hardware circuitry or processor and a portion of its (or their) accompanying software and/or firmware. The term "circuitry" also encompasses, for example and where applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device, or a similar integrated circuit in a server, cellular network device, or other computing or network device.
As described above, the third generation partnership project (3 GPP) has made significant progress in supporting the operation of multiple transmission points (TRP)/beams/panels, such as Dynamic Point Selection (DPS) and Dynamic Point Blanking (DPB). Although these operations are supported in NR Rel-15, they still do not adequately support the actual situation with non-ideal backhaul and do not further improve cell edge/cell average performance through higher level network coordination. DPS/DPB targets cell edge performance with only small/medium cell edge performance gains. To address these limitations, some protocols have been implemented.
As described above, in the previous 3GPP NR conference, each new radio physical downlink control channel (NR-PDCCH) has been agreed to schedule a corresponding new radio physical downlink shared channel (NR-PDSCH). The main motivation for introducing multiple NR-PDCCHs is to support multiple PDSCH data streams in incoherent joint transmission (NC-JT) independent of different spatial layers, supporting multiple TRPs from having ideal and non-ideal backhaul. And in the latest meeting three alternatives can be selected in the next meeting, which are only one single PDCCH, only multiple PDCCH designs, and both. Accordingly, if multiple PDCCH reception is supported in the next conference, the terminal device demodulates and detects data in multiple PDSCH using different procedures indicated in multiple PDCCHs. When the same procedure ID is included in Downlink Control Information (DCI), the terminal device may confuse the content to which the ID refers. Therefore, a new HARQ process should be designed to avoid this ambiguity.
According to an embodiment of the present disclosure, the primary network device determines the maximum size of the HARQ buffer based on the processing capability of the terminal device. According to an embodiment of the present disclosure, the terminal device determines the corresponding HARQ process based on DCI received from the primary network device or from both the primary network device and the cooperative network device.
Fig. 1 illustrates a schematic diagram of a communication system 100 in which embodiments of the present disclosure may be implemented. The communication system 100, which is part of a communication network, includes terminal devices 110-1, 110-2, … …, 110-N (collectively, "terminal device 110", where N is an integer), network devices 120-1, 120-2, … …, 120-M (collectively, "network device 120", where M is an integer). It should be noted that communication system 100 may also include other elements that have been omitted for clarity. Network device 120 may communicate with terminal device 110. It should be understood that the number of terminal devices and network devices shown in fig. 1 is given for illustrative purposes and is not meant to be limiting. Communication system 100 may include any suitable number of network devices and terminal devices. As shown in fig. 1, terminal device 110-1 is at the edge of the coverage of network device 120-1 and at the edge of the coverage of network device 120-2. Terminal device 110-1 may communicate with network device 120-1 and network device 120-2.
The term "primary network device" as used herein refers to a network device responsible for transmitting DCI. The term "cooperative network device" as used herein refers to a network device controlled by a master network device in transmitting DCI. For illustration purposes only, network device 120-1 may be a master network device and network device 120-2 may be a cooperating network device.
Communication in communication system 100 may be implemented in accordance with any suitable communication protocol including, but not limited to, first generation (1G), second generation (2G), third generation (3G), fourth generation (4G), fifth generation (5G), etc. cellular communication protocols, wireless local area network communication protocols such as Institute of Electrical and Electronics Engineers (IEEE) 802.11, and/or any other protocols currently known or developed in the future. Moreover, the communication may utilize any suitable wireless communication technology, including, but not limited to: code Division Multiple Access (CDMA), frequency Division Multiple Access (FDMA), time Division Multiple Access (TDMA), frequency Division Duplex (FDD), time Division Duplex (TDD), multiple Input Multiple Output (MIMO), orthogonal Frequency Division Multiple Access (OFDMA), and/or any other technique currently known or developed in the future.
Fig. 2 shows a flow chart of a method 200 according to an embodiment of the present disclosure. Method 200 may be implemented at any suitable primary network device. For illustrative purposes only, the method 200 is described as being implemented at the network device 120-1.
At block 210, network device 120-1 receives information of the processing capabilities of terminal device 110-1. The processing capability may be a computing capability. The processing capability may also be a memory capability. In some embodiments, the information of processing power may include quantization information. For example, the information of the processing capability may include the type of the terminal device 110-1.
At block 220, the network device 120-1 determines a maximum size of HARQ buffers that may be configured at the terminal device 120-1 based on the information. The term "maximum size of HARQ buffer" as used herein refers to the number of received packets that a terminal device is able to store. The network device 120-1 may transmit an indication of the maximum size of the HARQ buffer via higher layer signaling. For example, an indication of the maximum size of the HARQ buffer may be sent in Radio Resource Control (RRC) signaling.
In some embodiments, the maximum size of the harq buffers may be 16 for network device 120-1 and network device 120-2, respectively. For example, the terminal device 110-1 may store the HARQ buffer in a separate storage device. In other embodiments, the maximum size of the HARQ buffer may be 32. For example, terminal device 110-1 may store the HARQ buffers together. The size of the HARQ buffer configured at the terminal device 110-1 may be smaller than the maximum size of the HARQ buffer.
In an example embodiment, if the terminal device 110-1 has relatively good computing power, the network device 120-1 determines that the maximum size of the HARQ buffer may be relatively small. In other embodiments, if the terminal device 110-1 has relatively good power storage capability, the network device 11 determines that the maximum size of the HARQ buffer may be relatively large. For example, if the computing power of the terminal device 110-1 is better than the storage capability, the network device 120-1 may determine that the maximum size of the HARQ buffer is 16. It should be noted that the maximum size of the HARQ buffer may also be determined based on other conditions. Embodiments of the present disclosure are not limited thereto.
In some embodiments, if terminal device 110-1 can update its processing capabilities, network device 120-1 can again determine the maximum size of the HARQ buffer. For example, if the storage capacity of the terminal device 110-1 decreases and the computing capacity of the terminal device 110-1 increases, the network device 120-1 may re-determine the maximum size of the HARQ buffer as 16 instead of 32.
At block 230, the network device 120-1 generates DCI based on the maximum size of the HARQ buffer. In some embodiments, the DCI may include PDSCH scheduling information conforming to the measurement of the coordinated channel state. The DCI may include an identification of the HARQ buffer of network device 120-1.
In some embodiments, network device 120-1 may also determine whether network device 120-2 transmits its own DCI to terminal device 110-1. Network device 120-1 may also send the determination to terminal device 110-1. The determination may be transmitted via higher layer signaling (e.g., radio Resource Control (RRC) signaling). In other embodiments, information regarding whether network device 120-2 transmits its own DCI may be preconfigured to terminal device 110-1.
If network device 120-2 does not transmit its own DCI, network device 120-1 transmits its DCI as well as the DCI of network device 120-2. Network device 120-2 may send its own DCI to network device 120-1. For example, the DCI may include an identification of the HARQ buffer of network device 120-1 and another identification of the HARQ buffer of network device 120-2.
At block 240, network device 120-1 transmits DCI to terminal device 110-1. Fig. 4A-4C illustrate some formats of DCI according to embodiments of the present disclosure. For purposes of illustration and not limitation, embodiments of the present disclosure are described with reference to fig. 4A-4C.
In an example embodiment, as shown in fig. 4A, the DCI may include a first identification 4010 of the HARQ buffer of network device 120-1 and a second identification 4020 of the HARQ buffer of network device 120-2. The network device 120-1 may send the first identification 4010 of the HARQ buffer of the network device 120-1 and the second identification 4020 of the HARQ buffer of the network device 120-2 in a predetermined order. In this way no additional signalling is introduced.
In some embodiments, if the HARQ buffers of the first network device 120-1 and the second network device 230-2 are stored together, which represents a maximum size of 32 for the HARQ buffers, the network device 120-1 may determine an identification of the HARQ buffers of the network device 120-2. In other embodiments, network device 120-1 may send network device 120-2 an identification of the HARQ buffer of network device 120-2 determined by network device 120-1.
Alternatively, network device 120-1 may send the unavailable identification to network device 120-2. For example, if network device 120-1 uses identification "2," network device 120-1 may send identification "2" to indicate that identification "2" is not available to network device 120-2.
In an example embodiment, as shown in fig. 4B, the DCI may include a first identification 4010 of the HARQ buffer of network device 120-1 with an indicator 4030 of network device 120-1. The DCI may also include a second identification 4020 of the HARQ buffer of network device 120-2 with an indicator 4040 of network device 120-2. In this way, the identities of the different HARQ buffers can be distinguished in an efficient manner.
In an example embodiment, the DCI includes a first identification 4010 of the HARQ buffer of the network device 120-1 with the indicator 4030, as shown in fig. 4C. In some embodiments, if the HARQ buffers of the first network device 120-1 and the second network device 230-2 are stored together, which represents a maximum size of 32 for the HARQ buffers, the network device 120-1 may determine an identification of the HARQ buffers of the network device 120-2. In this way, the new format of DCI is compatible without changing the conventional mechanism.
In some embodiments, an apparatus (e.g., network device 120-1) for performing method 200 may include respective components for performing corresponding steps in method 200. These components may be implemented in any suitable manner. For example, it may be implemented by circuitry or software modules.
In some embodiments, the apparatus comprises: means for receiving information of processing capabilities of a terminal device at a primary network device in a coordinated multipoint (CoMP) system; means for determining, based on the information, a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing; means for generating Downlink Control Information (DCI) based at least in part on a maximum size of a HARQ buffer, the DCI including at least one identification of the HARQ buffer; and means for transmitting the DCI to the terminal device.
In some embodiments, the DCI includes: a first identity of a first HARQ buffer of the primary network device; and a second identification of a second HARQ buffer of the cooperating network device in the CoMP system.
In some embodiments, the maximum size matches a first predetermined maximum size, and the means for transmitting DCI comprises: means for receiving a second identification from the cooperating network device; and means for transmitting the first identification and the second identification in a predetermined order.
In some embodiments, the maximum size matches a first predetermined maximum size, and the means for transmitting DCI comprises: means for receiving a second identification from the cooperating network device; and means for transmitting the first identity with the indicator of the primary network device and the second identity with the indicator of the cooperative network.
In some embodiments, the maximum size matches a second predetermined maximum size, and the means for transmitting DCI comprises: means for determining a second identity; and means for transmitting the first identification and the second identification.
In some embodiments, the DCI includes a first identification of a first HARQ buffer related to the primary network device, and the means for transmitting the DCI includes: means for transmitting a first identification with an indicator of the primary network device.
In some embodiments, the apparatus further comprises: means for determining a third identity related to a third HARQ buffer of a cooperating network device in the cooperating multipoint system if the maximum size matches a second predetermined maximum size; and means for sending the second identification to the cooperative network device.
In some embodiments, the apparatus further comprises: means for sending an indication of the maximum size of the HARQ buffer to the terminal device.
In some embodiments, the apparatus further comprises: means for determining whether a cooperative network device in the cooperative multipoint system transmits another DCI to the terminal device; and means for sending the determination to the terminal device.
Fig. 3 shows a flow chart of a method 300 according to an embodiment of the present disclosure. The method 300 may be implemented at any suitable terminal device. For illustrative purposes only, the method 300 is described as being implemented at the terminal device 110-1.
At block 310, terminal device 110-1 sends information of its processing capabilities to network device 120-1. The processing capability may be a computing capability. The processing capability may also be a memory capability.
At block 320, terminal device 110-1 receives DCI. The DCI is generated based on the maximum size of the HARQ buffer. The term "maximum size of HARQ buffer" as used herein refers to the number of received packets that a terminal device is able to store. Terminal device 110-1 may receive an indication of the maximum size of the HARQ buffer via higher layer signaling. For example, an indication of the maximum size of the HARQ buffer may be sent in Radio Resource Control (RRC) signaling.
In some embodiments, the maximum size of the harq buffers may be 16 for network device 120-1 and network device 120-2, respectively. For example, the terminal device 110-1 may store the HARQ buffer in a separate storage device. In other embodiments, the maximum size of the HARQ buffer may be 32. For example, terminal device 110-1 may store the HARQ buffers together.
In an example embodiment, if the terminal device 110-1 has relatively good computing power, the network device 120-1 determines that the maximum size of the HARQ buffer may be relatively small. In other embodiments, if the terminal device 110-1 has relatively good power storage capability, the network device 11 determines that the maximum size of the HARQ buffer may be relatively large. For example, if the computing power of the terminal device 110-1 is better than the storage capability, the network device 120-1 may determine that the maximum size of the HARQ buffer is 16. It should be noted that the maximum size of the HARQ buffer may also be determined based on other conditions. Embodiments of the present disclosure are not limited thereto.
In some embodiments, if terminal device 110-1 can update its processing capabilities, network device 120-1 can again determine the maximum size of the HARQ buffer. For example, if the storage capacity of the terminal device 110-1 decreases and the computing capacity of the terminal device 110-1 increases, the network device 120-1 may re-determine the maximum size of the HARQ buffer as 16 instead of 32.
At block 330, terminal device 110-1 decodes the DCI to obtain at least one identity of the HARQ buffer. In some embodiments, the DCI may include PDSCH scheduling information conforming to the measurement of the coordinated channel state. The DCI may include an identification of the HARQ buffer of network device 120-1. The DCI may also include an identification of the HARQ buffer of network device 120-1. In some embodiments, terminal device 110-1 may receive DCI from network device 120-1 and receive additional DCI from network device 120-2.
In some embodiments, the terminal device 110-1 may store the decoded PDSCH data into a corresponding buffer.
In some embodiments, network device 120-1 may also determine whether network device 120-2 transmits its own DCI to terminal device 110-1. Network device 120-1 may also send the determination to terminal device 110-1. The determination may be sent via higher layer signaling (e.g., radio Resource Control (RRC) signaling). In other embodiments, information regarding whether network device 120-2 transmits its own DCI may be preconfigured to terminal device 110-1.
In some embodiments, an apparatus (e.g., terminal device 110-1) for performing method 300 may include respective components for performing corresponding steps in method 300. These components may be implemented in any suitable manner. For example, it may be implemented by circuitry or software modules.
In some embodiments, the apparatus comprises: means for transmitting information of processing capabilities of terminal devices to a primary network device in a coordinated multipoint (CoMP) system; means for receiving Downlink Control Information (DCI) generated based at least in part on a maximum size of a HARQ buffer indicating a number of received packets that a terminal device is capable of storing; and means for decoding the DCI to obtain at least one identity of the HARQ buffer.
In some embodiments, the DCI includes: a first identity of a first HARQ buffer of the primary network device; and a second identification of a second HARQ buffer of the cooperating network device in the CoMP system.
In some embodiments, the maximum size matches a first predetermined maximum size, and the means for receiving DCI: means for receiving the first identity and the second identity in a predetermined order from the master network device.
In some embodiments, the maximum size matches a first predetermined maximum size, and the means for receiving DCI: means for receiving, from the primary network device, a first identity with an indication of the primary network device and a second identity with an indication of the cooperative network.
In some embodiments, the maximum size matches a second predetermined maximum size, and the means for receiving DCI: means for receiving the first identity and the second identity from the primary network device.
In some embodiments, the DCI includes a first identification of a first HARQ buffer related to the primary network device, and the means for receiving the DCI includes: means for receiving, from a primary network device, a first identification with an indication of the primary network device; and means for receiving, from a cooperating network device in the CoMP system, a second identity with an indication of the cooperating network device.
In some embodiments, the apparatus comprises: means for receiving an indication of a maximum size of the HARQ buffer to the terminal device.
In some embodiments, the apparatus comprises: means for receiving information on whether a cooperative network device in the cooperative multipoint system transmits another DCI to a terminal device.
In some embodiments, the apparatus comprises: means for sending an acknowledgement of HARQ corresponding to at least one identity of the HARQ buffer to the primary network device.
Fig. 5 is a simplified block diagram of an apparatus 500 suitable for implementing embodiments of the present disclosure. The device 500 may be implemented at a registration management entity 530. Device 500 may also be implemented at terminal device 110-1. Device 500 may also be implemented at network device 120-1. As shown, the apparatus 500 includes one or more processors 510, one or more memories 520 coupled to the processor(s) 510, one or more transmitters and/or receivers (TX/RX) 540 coupled to the processor(s) 510.
Processor 510 may be of any type suitable to the local technology network and may include, by way of non-limiting example, one or more of a general purpose computer, a special purpose computer, a microprocessor, a Digital Signal Processor (DSP), and a processor based on a multi-core processor architecture. The device 500 may have multiple processors, such as application specific integrated circuit chips, that are slaved in time to a clock that is synchronized to the master processor.
Memory 520 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as non-transitory computer readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory, as non-limiting examples.
Memory 520 stores at least a portion of program 530. TX/RX 540 is used for two-way communication. TX/RX 540 has at least one antenna to facilitate communication, although in practice the access nodes referred to in this application may have multiple antennas. The communication interface may represent any interface necessary to communicate with other network elements.
The program 530 is assumed to include program instructions that, when executed by the associated processor 510, enable the device 500 to operate in accordance with embodiments of the present disclosure, as discussed herein with reference to fig. 2 and 3. That is, embodiments of the present disclosure may be implemented by computer software that may be executed by the processor 510 of the device 500, or by hardware, or by a combination of software and hardware.
While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any disclosure or of what may be claimed, but rather as descriptions of features specific to particular disclosure of particular implementations. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.
Similarly, although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. As a result. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated in a single software product or packaged into multiple software products.
Various modifications, adaptations to the foregoing exemplary embodiments of this disclosure will become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings. Any and all modifications will still fall within the scope of the non-limiting and exemplary embodiments of this disclosure. Moreover, other embodiments of the disclosure set forth herein will be apparent to those skilled in the art to which the disclosure relates from consideration of the specification and practice of the disclosure presented in the foregoing specification and the associated drawings.
Therefore, it is to be understood that the embodiments of the disclosure are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (40)

1. A primary network device, comprising:
at least one processor; and
a memory coupled to the at least one processor, the memory having instructions stored therein that, when executed by the at least one processor, cause the network device to:
receiving, at a primary network device in a coordinated multipoint (CoMP) system, information of a processing capability of a terminal device;
determining a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device based on the information, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing;
generating Downlink Control Information (DCI) based at least in part on the maximum size of the HARQ buffer, the DCI including at least one identification of the HARQ buffer; and
and sending the DCI to the terminal equipment.
2. The primary network device of claim 1, wherein the DCI comprises:
a first identity of a first HARQ buffer of the primary network device, and
a second identity of a second HARQ buffer of a cooperating network device in the CoMP system.
3. The primary network device of claim 2, wherein the maximum size matches a first predetermined maximum size, and wherein the network device is caused to transmit the DCI by:
Receiving the second identification from the cooperative network device; and
the first and second identifications are transmitted in a predetermined order.
4. The primary network device of claim 2, wherein the maximum size matches a first predetermined maximum size, and wherein the network device is caused to transmit the DCI by:
receiving the second identification from the cooperative network device; and
transmitting the first identification with an indicator of the primary network device and the second identification with an indicator of the cooperative network.
5. The primary network device of claim 2, wherein the maximum size matches a second predetermined maximum size, and wherein the network device is caused to transmit the DCI by:
determining the second identity; and
and sending the first identifier and the second identifier.
6. The primary network device of claim 1, wherein the DCI includes a first identification of a first HARQ buffer related to the primary network device, and
wherein the network device is sent the DCI by:
transmitting the first identification with an indicator of the primary network device.
7. The master network device of claim 1, wherein the network device is further caused to:
transmitting information related to an identifier of a HARQ buffer to a cooperative network device in the coordinated multi-point system, the information including: a third identity of a third HARQ buffer of the cooperating network device or an unavailable identity of the third HARQ buffer of the cooperating network device, the third identity being determined by the primary network device.
8. The master network device of claim 1, wherein the network device is further caused to:
and sending an indication of the maximum size of the HARQ buffer to the terminal equipment.
9. The network device of claim 1, wherein the network device is further caused to:
determining whether a cooperative network device in the cooperative multipoint system transmits another DCI to the terminal device; and
and sending the determination to the terminal equipment.
10. A terminal device, comprising:
at least one processor; and
a memory coupled to the at least one processor, the memory having instructions stored therein that, when executed by the at least one processor, cause the terminal device to:
Transmitting information of processing capability of a terminal device to a main network device in a coordinated multipoint (CoMP) system;
receiving Downlink Control Information (DCI) generated based at least in part on a maximum size of a HARQ buffer, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing; and
decoding the DCI to obtain at least one identity of the HARQ buffer.
11. The terminal device of claim 10, wherein the DCI comprises:
a first identity of a first HARQ buffer of the primary network device, and
a second identity of a second HARQ buffer of a cooperating network device in the CoMP system.
12. The terminal device of claim 11, wherein the maximum size matches a first predetermined maximum size, and wherein the terminal device is caused to receive the DCI by:
the first and second identifications are received from the primary network device in a predetermined order.
13. The terminal device of claim 11, wherein the maximum size matches a first predetermined maximum size, and wherein the terminal device is caused to receive the DCI by:
The first identity with an indication of the primary network device and the second identity with an indication of the collaborative network are received from the primary network device.
14. The terminal device of claim 11, wherein the maximum size matches a second predetermined maximum size, and wherein the terminal device is caused to receive the DCI by:
the first and second identifications are received from the primary network device.
15. The terminal device of claim 10, wherein the DCI includes a first identification of a first HARQ buffer related to the primary network device, and wherein the terminal device is caused to receive the DCI by:
receiving the first identity with an indication of the primary network device from the primary network device; and
a second identification with an indication of the cooperating network device is received from the cooperating network device in the CoMP system.
16. The terminal device of claim 10, wherein the terminal device is further caused to:
an indication of the maximum size of the HARQ buffer is received to the terminal device.
17. The terminal device of claim 10, wherein the terminal device is further caused to:
Information is received as to whether a cooperative network device in the cooperative multipoint system transmits another DCI to the terminal device.
18. The terminal device of claim 10, wherein the terminal device is further caused to:
an acknowledgement of HARQ corresponding to the at least one identification of the HARQ buffer is sent to the primary network device.
19. A method of communication, comprising:
receiving, at a primary network device in a coordinated multipoint (CoMP) system, information of a processing capability of a terminal device;
determining a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device based on the information, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing;
generating Downlink Control Information (DCI) based at least in part on the maximum size of the HARQ buffer, the DCI including at least one identification of the HARQ buffer; and
and sending the DCI to the terminal equipment.
20. The method of claim 19, wherein the DCI comprises:
a first identity of a first HARQ buffer of the primary network device, and
a second identity of a second HARQ buffer of a cooperating network device in the CoMP system.
21. The method of claim 20, wherein the maximum size matches a first predetermined maximum size, and wherein transmitting the DCI comprises:
receiving the second identification from the cooperative network device; and
the first and second identifications are transmitted in a predetermined order.
22. The method of claim 20, wherein the maximum size matches a first predetermined maximum size, and wherein transmitting the DCI comprises:
receiving the second identification from the cooperative network device; and
transmitting the first identification with an indicator of the primary network device and the second identification with an indicator of the cooperative network.
23. The method of claim 20, wherein the maximum size matches a second predetermined maximum size, and wherein transmitting the DCI comprises:
determining the second identity; and
and sending the first identifier and the second identifier.
24. The method of claim 19, wherein the DCI includes a first identification of a first HARQ buffer related to the primary network device, and
wherein transmitting the DCI includes: transmitting the first identification with an indicator of the primary network device.
25. The method of claim 19, further comprising:
transmitting information related to an identifier of a HARQ buffer to a cooperative network device in the coordinated multi-point system, the information including: a third identity of a third HARQ buffer of the cooperating network device or an unavailable identity of the third HARQ buffer of the cooperating network device, the third identity being determined by the primary network device.
26. The method of claim 19, further comprising:
and sending an indication of the maximum size of the HARQ buffer to the terminal equipment.
27. The method of claim 19, further comprising:
determining whether a cooperative network device in the cooperative multipoint system transmits another DCI to the terminal device; and
and sending the determination to the terminal equipment.
28. A method of communication, comprising:
transmitting information of processing capability of a terminal device to a main network device in a coordinated multipoint (CoMP) system;
receiving Downlink Control Information (DCI) generated based at least in part on a maximum size of a HARQ buffer, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing; and
Decoding the DCI to obtain at least one identity of the HARQ buffer.
29. The method of claim 28, wherein the DCI comprises:
a first identity of a first HARQ buffer of the primary network device, and
a second identity of a second HARQ buffer of a cooperating network device in the CoMP system.
30. The method of claim 29, wherein the maximum size matches a first predetermined maximum size, and wherein the DCI is received:
the first and second identifications are received from the primary network device in a predetermined order.
31. The method of claim 29, wherein the maximum size matches a first predetermined maximum size, and wherein the DCI is received:
the first identity with an indication of the primary network device and the second identity with an indication of the collaborative network are received from the primary network device.
32. The method of claim 29, wherein the maximum size matches a second predetermined maximum size, and wherein the DCI is received:
the first and second identifications are received from the primary network device.
33. The method of claim 28, wherein the DCI includes a first identification of a first HARQ buffer related to the primary network device, and wherein receiving the DCI comprises:
Receiving the first identity with an indication of the primary network device from the primary network device; and
a second identification with an indication of the cooperating network device is received from the cooperating network device in the CoMP system.
34. The method of claim 28, further comprising:
an indication of the maximum size of the HARQ buffer is received to the terminal device.
35. The method of claim 28, further comprising:
information is received as to whether a cooperative network device in the cooperative multipoint system transmits another DCI to the terminal device.
36. The method of claim 28, further comprising:
an acknowledgement of HARQ corresponding to the at least one identification of the HARQ buffer is sent to the primary network device.
37. A computer readable medium having instructions stored thereon, which when executed by at least one processing unit of a machine, cause the machine to perform the method of any of claims 19 to 27.
38. A computer readable medium having instructions stored thereon, which when executed by at least one processing unit of a machine, cause the machine to perform the method of any of claims 28 to 36.
39. A communication apparatus, comprising:
means for receiving information of processing capabilities of a terminal device at a primary network device in a coordinated multipoint (CoMP) system;
means for determining a maximum size of a hybrid automatic repeat request (HARQ) buffer to be configured at the terminal device based on the information, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing;
means for generating Downlink Control Information (DCI) based at least in part on the maximum size of the HARQ buffer, the DCI including at least one identification of the HARQ buffer; and
and means for transmitting the DCI to the terminal device.
40. A communication apparatus, comprising:
means for transmitting information of processing capabilities of terminal devices to a primary network device in a coordinated multipoint (CoMP) system;
means for Downlink Control Information (DCI) generated based at least in part on a maximum size of a HARQ buffer, the maximum size of the HARQ buffer indicating a number of received packets that the terminal device is capable of storing; and
means for decoding the DCI to obtain at least one identity of the HARQ buffer.
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