CN114727331A - Data transmission method, device, terminal and network equipment - Google Patents
Data transmission method, device, terminal and network equipment Download PDFInfo
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- CN114727331A CN114727331A CN202110001402.3A CN202110001402A CN114727331A CN 114727331 A CN114727331 A CN 114727331A CN 202110001402 A CN202110001402 A CN 202110001402A CN 114727331 A CN114727331 A CN 114727331A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/20—Negotiating bandwidth
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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
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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
- H04L5/00—Arrangements affording multiple use of the transmission path
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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
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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
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention provides a data transmission method, a data transmission device, a terminal and network equipment, wherein the method comprises the following steps: and receiving, by a multi-bandwidth part BWP, transport blocks TB transmitted on at least two BWPs available to a terminal scheduled by a MAC layer of a network device, where the TBs transmitted on the at least two BWPs available to the terminal are duplicate blocks of the same TB. The scheme of the invention can realize one or more MAC TB duplicate transmissions dynamically scheduled by BWP.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, a terminal, and a network device.
Background
From the 3G era multi-Carrier HSDPA (High Speed Downlink Packet Access), CA (Carrier Aggregation) and DC (Dual Connectivity)/MC (multi Connectivity) of 4G and 5G, data transmission is performed on a plurality of links simultaneously for one UE, strictly speaking, a common method is that a base station performs multi-path Downlink transmission to a terminal, and it becomes air interface transmission. The above techniques are all based on defining different carriers for multi-path transmission.
With the introduction of URLLC (ultra reliable low latency communication) service in 5G, the inefficient method of "multiple times/duplication" (multiple times/duplication) is increasingly used, i.e. the same data packet is transmitted on different links by CA, DC/MC, etc. techniques, thereby obtaining the robustness gain of multilink parallel transmission.
As shown in fig. 1, in PDCP (packet data convergence protocol) replication, a PDCP connects a plurality of RLC (radio resource control) entities, each of which is responsible for data processing on one carrier, through a plurality of separate bearers. This method results in that each connection has an independent RLC transceiving mechanism, and the PDCP layer and the RLC layer directly configure multiple connection methods, which increases the complexity of the system. In addition, when the RLC transmits data to the MAC layer, the MAC layer does not know that the packet is a PDCP multi-copied packet, and only performs scheduling transmission according to a normal packet.
Currently, in 5G, a UE (terminal or user equipment) is specified to have only one active BWP (Bandwidth Part) in the same time domain, that is, data cannot be simultaneously transmitted to the UE through multiple active BWPs.
The prior art has at least the following problems: when data is sent to a user through a plurality of PDCP links (DC: Dual Connectivity Dual connection/MC: Multiple Connectivity: Multi connection), the user needs to keep uplink synchronization on each link, and the power consumption of the terminal is increased; when the user moves, the DC/MC also needs complex RRC switching signaling, and the probability of switching failure caused by abnormal signaling receiving and sending is increased. As a technical solution for high-level link replication (Duplication) transmission, DC/MC cannot detect the quality of air interface transmission in real time, so it cannot accurately decide whether each packet needs to start replication (Duplication) transmission, and it cannot accurately decide which connection (Connectivity) should be selected for data replication (Duplication) transmission.
Disclosure of Invention
The invention provides a data transmission method, a data transmission device, a terminal and network equipment. One or more dynamically scheduled MAC TB duplicate transmissions of BWPs based on traffic QoS characteristics and air interface link quality are realized by defining that a UE has the capability of transmitting data from a plurality of BWPs simultaneously and defining that a MAC has the capability of scheduling a plurality of BWPs.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
a data transmission method is applied to a terminal, and the method comprises the following steps:
and receiving, by a multi-bandwidth part BWP, transport blocks TB transmitted on at least two BWPs available to a terminal scheduled by a MAC layer of a network device, where the TBs transmitted on the at least two BWPs available to the terminal are duplicate blocks of the same TB.
Optionally, the capability of the terminal to support multiple BWPs for data transmission includes at least one of the following:
the maximum BWP number supported by the terminal;
the maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transport blocks TB on different BWPs; the same TB is a TB transmitted by copying, and the different TBs are TBs transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
Optionally, the bandwidth portion BWP available to the terminal includes:
a bandwidth part BWP available to the terminal configured by radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP which is available for the terminal and is jointly configured through the radio resource control RRC signaling and the media access control unit MAC CE signaling; alternatively, the first and second liquid crystal display panels may be,
the bandwidth part BWP available to the terminal, which is separately configured through the MAC layer.
Optionally, the data transmission method further includes: the received transport block TB is demodulated and decoded.
Optionally, the demodulating and decoding process performed on the received transport block TB includes:
data on one or more BWPs is selected for joint decoding based on a block error rate BLER of data previously received on the respective BWPs.
Optionally, the data transmission method further includes: and sending feedback information to the network equipment according to the decoding result.
The embodiment of the invention also provides a data transmission method, which is applied to network equipment and comprises the following steps:
a Media Access Control (MAC) layer of the network equipment receives data sent by an upper layer;
the network device copies and transmits the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
Optionally, the capability of the terminal to support multiple BWP data transmission includes at least one of the following:
the maximum BWP number supported by the terminal;
maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transport blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
Optionally, the data transmission method further includes: the terminal is configured to turn on or off multi-BWP transmissions.
Optionally, configuring the terminal to turn on or turn off multi-BWP transmission includes:
and configuring the terminal to start or close the multi-BWP transmission in an RRC connection establishment process or an RRC reconfiguration process through Radio Resource Control (RRC) signaling.
Optionally, the RRC signaling carries at least one of the following:
an indication of turning on or off;
the number of BWPs activated simultaneously;
BWP identification or index available to the terminal;
measurement related configuration at multiple BWPs.
Optionally, the bandwidth portion BWP available to the terminal includes:
controlling a bandwidth part BWP available to the terminal through radio resource control RRC signaling; alternatively, the first and second liquid crystal display panels may be,
the bandwidth part BWP available for the terminal is controlled by the radio resource control RRC signaling and the media access control unit MAC CE signaling together; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal is separately controlled through the MAC layer.
Optionally, controlling the bandwidth portion BWP available to the terminal through RRC signaling includes:
when the terminal accesses the network, configuring one or more BWPs for the terminal through an RRC signaling connection establishment signaling; and/or the presence of a gas in the atmosphere,
in the terminal connection state, the BWP available to the terminal is modified through RRC signaling reconfiguration signaling.
Optionally, the jointly controlling the bandwidth portion BWP available to the terminal through the RRC signaling and the MAC CE signaling includes:
when a terminal accesses a network, configuring a BWP set available for the terminal through an RRC connection establishment signaling;
and the MAC layer performs activation or deactivation control through MAC CE signaling or a physical downlink control channel PDCCH.
Optionally, separately controlling the bandwidth part BWP available to the terminal through the MAC layer includes at least one of:
determining whether to start multi-BWP replication transmission or not according to a quality of service QoS characteristic value associated with a data packet of a terminal through a scheduler of a MAC layer, and if the multi-BWP replication transmission is started, performing BWP allocation during resource allocation;
enabling multi-BWP copy transmission through a scheduler of an MAC layer, and calculating the available BWP of the terminal according to the full bandwidth measurement reported by the terminal and the measurement of the BWP;
ordering the available multiple BWPs;
controlling the priority of the multiple BWPs;
after finishing sequencing the available BWPs of a single terminal, determining potential terminal candidate objects which can be carried on each BWP;
determining the number of the BWPs actually distributed according to the data volume actually sent by each terminal, the quality of an air interface channel, the QoS requirement related to a data packet and the available BWPs;
allocating wireless resources to the terminal in the available BWP;
the BWP selection information is transmitted to the terminal through DCI carried by the MAC CE or PDCCH.
Optionally, the available multiple BWPs are ranked, including at least one of:
ordering the multiple BWPs according to the transmission quality of the terminal on the BWPs from top to bottom;
if the terminal transmits the data on the BWP, determining the transmission quality of the terminal on the BWP according to at least one of BLER generated by the first transmission of the data transmitted by the terminal, the retransmission times and the residual BLER, and sequencing the available BWPs according to the transmission quality.
Optionally, controlling the priority of the multiple BWPs includes:
in the available BWP of the terminal, the BLER generated by the first transmission is the highest priority of the BWP with 0, and then the BWP is successfully transmitted through retransmission, wherein the BWP has higher priority when the retransmission times are less; for data that the terminal has not transmitted, the lowest priority is BWP with residual BLER.
Optionally, the data transmission method further includes: the receiving terminal receives feedback information on whether the transport block was successful for at least one bandwidth part BWP available to the terminal.
The embodiment of the present invention further provides a data transmission apparatus, which is applied to a media access control MAC layer of a network device, and the apparatus includes:
the receiving and transmitting module is used for receiving data transmitted by an upper layer; and copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
An embodiment of the present invention further provides a network device, including:
the transceiver of the media access control MAC layer of the network equipment is used for receiving data sent by an upper layer; and copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
The embodiment of the invention also provides a data transmission device, which is applied to a terminal and comprises:
a transceiver module, configured to receive, through a multi-bandwidth part BWP, a transport block TB transmitted on at least two BWPs available to a terminal scheduled by an MAC layer of a network device, where the TB transmitted on the at least two BWPs available to the terminal is a duplicate block of the same TB.
An embodiment of the present invention further provides a terminal, including:
the transceiver is configured to receive, through a multi-bandwidth part BWP, a transport block TB transmitted on at least two BWPs that are available to a terminal and scheduled by a MAC layer of a network device, where the TB transmitted on the at least two BWPs that are available to the terminal are duplicate blocks of the same TB.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
The scheme of the invention at least comprises the following beneficial effects:
in the scheme of the invention, a Media Access Control (MAC) layer of network equipment receives data sent by an upper layer; the network device copies and transmits the transmission block TB of the data to the terminal through at least two available BWPs of the terminal scheduled by the MAC layer, and the terminal receives the transmission block TB transmitted on at least two available bandwidth parts BWPs of the terminal scheduled by the MAC layer of the network device through the multi-BWP supported by the terminal; therefore, the terminal has the capability of transmitting data from a plurality of BWPs simultaneously, and the MAC is defined to have the capability of scheduling a plurality of BWPs, thereby realizing one or a plurality of MAC TB copy transmissions dynamically scheduled by the BWPs based on the service QoS characteristics and the air interface link quality; furthermore, the method can accurately open, close and modify the BWP copy roll-out control according to the quality of the air interface channel of the user, thereby saving the waste of air interface resources and avoiding the influence on the change of a high-level link; multiple paths of copy transmission of BWP are integrated into a resource allocation process of MAC scheduling, so that multiple operations of user data copy transmission, BWP resource selection, copy transmission control and the like are integrated; for a large bandwidth of 5G, the gain of the bandwidth is fully utilized. The compatibility is good, and the 3G/4G/5G network can be compatible, but not limited to 5G, and 6G and the like can also be compatible. Under 3G/4G, BWP copy transmission is not started directly in MAC scheduling.
Drawings
FIG. 1 is a functional diagram of PDCP multiplexing (replication)
Fig. 2 is a flowchart illustrating a data transmission method.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 2, an embodiment of the present invention provides a data transmission method, which is applied to a network device, and the method includes:
and step 22, copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and available for the terminal, wherein the terminal supports the capability of transmitting data by multiple BWPs. The TB here may be a MAC PDU (protocol data unit); here, BWP is a time-frequency domain resource, which of course includes but is not limited to BWP;
in this embodiment, one or more dynamically scheduled MAC TB duplicate transmissions by BWPs based on traffic QoS characteristics and air interface link quality are achieved by defining that a UE has the capability of transmitting data from multiple BWPs simultaneously and defining that a MAC has the capability of scheduling multiple BWPs. The resource allocation process of scheduling a scheduler which integrates the BWP multi-path copy transmission into MAC realizes the integration of multiple operations such as user data copy transmission, BWP resource selection, copy transmission control and the like; for a large bandwidth of 5G, the gain of the bandwidth is fully utilized. The compatibility is good, and the 3G/4G/5G network can be compatible. In 3G/4G, BWP copy transmission is not started in MAC scheduling directly.
In an optional embodiment of the present invention, the capability of the terminal to support multiple BWP data transmission includes at least one of the following:
the maximum BWP number supported by the terminal, for example, takes 4;
the maximum system bandwidth supported by the terminal, such as 100 MHz;
the terminal supports the full-bandwidth detection capability of the system, such as the full-bandwidth detection capability of 100 MHz;
the terminal supports the BWP-based reception measurement capability, the UE needs to have the measurement capability for BWP, and the UE supports the BWP-based reception measurement capability, such as defining BWP-based sounding reference symbols;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes for measuring the full bandwidth and each BWP, such as defining the full bandwidth measurement and a mixed mode based on the BWP measurement, or a combination of the full bandwidth measurement and successive BWP measurement within a period;
the terminal supports the same or different transport blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
soft Buffer (Soft Buffer) of hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
In an optional embodiment of the present invention, the data transmission method may further include: the terminal is configured to turn on or off multi-BWP transmissions.
Optionally, configuring the terminal to turn on or turn off multi-BWP transmission includes:
and configuring the terminal to start or close the multi-BWP transmission in an RRC connection establishment process or an RRC reconfiguration process through Radio Resource Control (RRC) signaling.
Specifically, RRC signaling configuration; and configuring the UE to start or close the multi-BWP transmission in an RRC connection establishment process (RRC connection establishment, including RRC Setup Request, RRC Setup Complete/Reject). Or configuring the UE to turn on or turn off the multiple BWPs in an RRC Reconfiguration process (RRC Reconfiguration, including RRC Reconfiguration, RRC Reconfiguration Complete/RRC connection re-establishment).
Optionally, the RRC signaling carries at least one of the following:
an indication of turning on or off;
the number of BWPs activated simultaneously;
BWP identification or index available to the terminal;
the configuration related to measurement under multiple BWPs includes measurement mode, bearer channel reported by measurement, and the like.
In an alternative embodiment of the present invention, the bandwidth portion BWP available to the terminal includes:
controlling a bandwidth part BWP available to the terminal through radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available for the terminal is controlled by the radio resource control RRC signaling and the media access control unit MAC CE signaling together; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal is separately controlled through the MAC layer.
In an optional embodiment of the present invention, the controlling the bandwidth portion BWP available to the terminal through RRC signaling includes:
when the terminal accesses the network, configuring one or more BWPs for the terminal through an RRC signaling connection establishment signaling; and/or the presence of a gas in the atmosphere,
in the terminal connection state, the BWP available to the terminal is modified through RRC signaling reconfiguration signaling.
In an optional embodiment of the present invention, the jointly controlling the bandwidth portion BWP available to the terminal through the RRC signaling and the MAC CE signaling includes:
when a terminal accesses a network, configuring a BWP set available for the terminal through an RRC connection establishment signaling;
and the MAC layer performs activation or deactivation control through MAC CE signaling or a physical downlink control channel PDCCH.
In an alternative embodiment of the present invention, the separately controlling the bandwidth part BWP available to the terminal through the MAC layer includes at least one of the following:
determining whether to start multi-BWP replication transmission or not according to a quality of service QoS characteristic value associated with a data packet of a terminal through a scheduler of a MAC layer, and if the multi-BWP replication transmission is started, performing BWP allocation during resource allocation;
enabling multi-BWP copy transmission through a scheduler of an MAC layer, and calculating the available BWP of the terminal according to the full bandwidth measurement reported by the terminal and the measurement of the BWP;
ordering the available multiple BWPs;
controlling the priority of the multiple BWPs;
after finishing sequencing the available BWPs of a single terminal, determining potential terminal candidate objects which can be carried on each BWP;
determining the number of the BWPs actually distributed according to the data volume actually sent by each terminal, the quality of an air interface channel, the QoS requirement related to a data packet and the available BWPs;
allocating wireless resources to the terminal in the available BWP;
the BWP selection information is transmitted to the terminal through DCI carried by the MAC CE or PDCCH.
Optionally, the available multiple BWPs are ranked, including at least one of:
ordering the multiple BWPs according to the transmission quality of the terminal on the BWPs from top to bottom;
if the terminal transmits the data on the BWP, determining the transmission quality of the terminal on the BWP according to at least one of BLER generated by the first transmission of the data transmitted by the terminal, the retransmission times and the residual BLER, and sequencing the available BWPs according to the transmission quality.
Optionally, controlling the priority of the multiple BWPs includes:
in the available BWP of the terminal, BLER that the first transmission produces is the highest priority of BWP of 0, second through retransmitting, BWP successful of final transmission, wherein the retransmission times is the more the BWP is higher in priority; for data that the terminal has not transmitted, the lowest priority is BWP with residual BLER.
In particular, BWP is a resource for MAC dynamic resource allocation. The scheduler of the MAC determines whether to initiate multi BWP duplicate transmission according to the QoS tag value associated with the data packet of the UE. If enabled, BWP allocation occurs at resource allocation time.
If multi-BWP replication transport is enabled: and calculating the BWP available for the UE according to the full bandwidth measurement reported by the UE and the measurement of the BWP. The BWPs are ordered according to the quality of the transmission over which the UE is transmitting from top to bottom.
Further sequencing the UE based on the sequenced available BWP: if the UE transmits data on the BWP, determining the transmission quality of the UE on the BWP according to BLER generated by the first transmission of the data transmitted by the UE, HARQ process retransmission, retransmission times, residual BLER and the like, and further sequencing the available BWP. Such as: the BLER generated by the first transmission is 0, and the BWP has the highest priority; the less the retransmission times, the higher the BWP priority; BWP with residual BLER has the lowest priority.
Further completing the sequencing of BWPs available to the UE: the BWP with BLER 0 generated by the first transmission has the highest priority, and then the BWP is successfully transmitted through retransmission, wherein the BWP has higher priority when the retransmission times are less; third, the UE has no data to transmit, and the lowest priority is BWP with residual BLER.
After the ordering of the available BWPs for a single UE is completed, the potential UE candidates that can be carried on each BWP are determined. Since the total amount of data carried on each BWP or the QoS securing capability provided for the data packet can be calculated. Load balancing is needed when there are too many users concentrated on a relatively concentrated BWP (BWP overlaid in the center of the cell). And uniformly performing balanced matching of the UE and the BWP according to the priority sequence of the BWP available for each UE and by combining the UE already carried on each BWP.
And determining the number of the actually distributed BWPs according to the data volume actually sent by each UE, the quality of an air interface channel, the QoS requirement related to the data packet and the available BWPs.
Allocating radio resources to the UE in the BWP;
the BWP selection information is transmitted to the UE through DCI carried by the MAC CE or PDCCH. The DCI carried by the MAC CE or the PDCCH corresponding to each BWP may be transmitted, or the DCI carried by the MAC CE or the PDCCH may be transmitted on one BWP. If the indication is transmitted on one BWP, all BWP and TB multiplexing indications used for the indication simultaneously are needed on DCI carried by the MAC CE or PDCCH.
In an optional embodiment of the present invention, the data transmission method may further include: the receiving terminal receives feedback information on whether the transport block was successful for at least one bandwidth part BWP available to the terminal.
Specifically, after receiving the RRC signaling, the MAC CE, or the DCI carried by the PDCCH, the receiving end obtains the information that the BWP and the MAC TB are duplicated and transmitted, performs demodulation and decoding processing, and performs uplink feedback.
In the decoding process, the receiving end may select data on one or more BWPs (bits carried on the time-frequency-domain resource) for joint decoding based on the BLER of the data previously received on the corresponding BWP (the lower the BLER, meaning the better the channel quality of the data received by the UE on the BWP). If the decoding is successful, feeding back ACK; and if the decoding is not successful, performing incremental joint decoding on the data on the BWP with the increased BLER (block error rate) times lower until the decoding is successful or failed finally, and feeding back ACK (acknowledgement) and NACK (negative acknowledgement) respectively.
When the feedback is sent, in order to reduce the probability of failure in sending the feedback, the feedback information may be fed back separately for different BWPs, or may be synthesized into one feedback, or may be selected from a plurality of BWPs for feedback.
The party sending the data knows that duplicate transmission is performed, and can identify the repeated feedback information after receiving the feedback information.
The embodiment of the invention controls through MAC, can accurately control the copy and transfer-out of BWP according to the quality of the air interface channel of the user, saves the waste of air interface resources and avoids the influence on the change of a high-level link; multiple paths of copy transmission of BWP are integrated into a resource allocation process of MAC scheduling, so that multiple operations of user data copy transmission, BWP resource selection, copy transmission control and the like are integrated; for a large bandwidth of 5G, the gain of the bandwidth is fully utilized. The compatibility is good, and the 3G/4G/5G network can be compatible. Under 3G/4G, BWP copy transmission is not started directly in MAC scheduling.
The embodiment of the invention also provides a data transmission method which is applied to a terminal and comprises the following steps:
and receiving, by a multi-bandwidth part BWP, transport blocks TB transmitted on at least two BWPs available to a terminal scheduled by a MAC layer of a network device, where the TBs transmitted on the at least two BWPs available to the terminal are duplicate blocks of the same TB. Here, BWP is a time-frequency domain resource, which of course includes but is not limited to BWP;
optionally, the capability of the terminal to support multiple BWPs for data transmission includes at least one of the following:
the maximum BWP number supported by the terminal;
maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transmission blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
Optionally, the bandwidth portion BWP available to the terminal includes:
a bandwidth part BWP available to the terminal configured by radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP which is available for the terminal and is jointly configured through the radio resource control RRC signaling and the media access control unit MAC CE signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal, which is separately configured through the MAC layer.
Optionally, the data transmission method further includes: the received transport block TB is demodulated and decoded.
Optionally, the demodulating and decoding process performed on the received transport block TB includes:
data on one or more BWPs is selected for joint decoding based on a block error rate BLER of data previously received on the respective BWPs.
Optionally, the data transmission method further includes: and sending feedback information to the network equipment according to the decoding result.
It should be noted that this method is a method of a terminal side corresponding to the network side, and all embodiments related to the terminal in the above method embodiments are applicable to this embodiment, and the same technical effects can be achieved.
The embodiment of the present invention further provides a data transmission apparatus, which is applied to a media access control MAC layer of a network device, and the apparatus includes:
the receiving and transmitting module is used for receiving data transmitted by an upper layer; and copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
Optionally, the capability of the terminal to support multiple BWP data transmission includes at least one of the following:
the maximum BWP number supported by the terminal;
maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transport blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
Optionally, the data transmission method further includes: the terminal is configured to turn on or off multi-BWP transmissions.
Optionally, configuring the terminal to turn on or turn off multi-BWP transmission includes:
and configuring the terminal to start or close the multi-BWP transmission in an RRC connection establishment process or an RRC reconfiguration process through Radio Resource Control (RRC) signaling.
Optionally, the RRC signaling carries at least one of the following:
an indication of turning on or off;
the number of BWPs activated simultaneously;
BWP identification or index available to the terminal;
measurement related configuration at multiple BWPs.
Optionally, the bandwidth portion BWP available to the terminal includes:
controlling a bandwidth part BWP available to the terminal through radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available for the terminal is controlled by the radio resource control RRC signaling and the media access control unit MAC CE signaling together; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal is separately controlled through the MAC layer.
Optionally, controlling the bandwidth portion BWP available to the terminal through RRC signaling includes:
when the terminal accesses the network, configuring one or more BWPs for the terminal through RRC signaling connection establishment signaling; and/or the presence of a gas in the gas,
in the terminal connection state, the BWP available to the terminal is modified through RRC signaling reconfiguration signaling.
Optionally, the jointly controlling the bandwidth portion BWP available to the terminal through the RRC signaling and the MAC CE signaling includes:
when a terminal accesses a network, configuring a BWP set available for the terminal through an RRC connection establishment signaling;
and the MAC layer performs activation or deactivation control through MAC CE signaling or a physical downlink control channel PDCCH.
Optionally, separately controlling the bandwidth part BWP available to the terminal through the MAC layer includes at least one of:
determining whether to start multi-BWP replication transmission or not according to a quality of service QoS characteristic value associated with a data packet of a terminal through a scheduler of a MAC layer, and if the multi-BWP replication transmission is started, performing BWP allocation during resource allocation;
a scheduler of an MAC layer enables multi-BWP copy transmission, and the available BWP of the terminal is calculated according to the full bandwidth measurement reported by the terminal and the measurement of the BWP;
ordering the plurality of BWPs from top to bottom according to the transmission quality of the terminal thereon;
if the terminal transmits the transmitted data on the BWP, determining the transmission quality of the terminal on the BWP according to at least one of BLER generated by the first transmission of the data transmitted by the terminal, HARQ process retransmission, retransmission times and residual BLER, and sequencing the available BWPs according to the transmission quality;
in the available BWP of the terminal, the BLER generated by the first transmission is the highest priority of the BWP with 0, and then the BWP is successfully transmitted through retransmission, wherein the BWP has higher priority when the retransmission times are less; thirdly, the UE has no data transmission, and the lowest priority is BWP with residual BLER;
after finishing sequencing the available BWPs of a single terminal, determining potential UE alternative objects which can be carried on each BWP;
and determining the number of the actually distributed BWPs according to the data volume actually sent by each terminal, the quality of an air interface channel, the QoS requirement related to the data packet and the available BWPs.
Allocating wireless resources to the terminal in the available BWP;
the BWP selection information is transmitted to the terminal through DCI carried by the MAC CE or PDCCH.
Optionally, the data transmission method further includes: the receiving terminal receives feedback information on whether the transport block was successful for at least one bandwidth part BWP available to the terminal.
It should be noted that this embodiment is an apparatus corresponding to the above method, and all implementation manners in the above method embodiment are applicable to this apparatus embodiment, and the same technical effects can be achieved.
An embodiment of the present invention further provides a network device, including:
the transceiver of the media access control MAC layer of the network equipment is used for receiving data sent by an upper layer; and copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
Optionally, the capability of the terminal to support multiple BWP data transmission includes at least one of the following:
the maximum BWP number supported by the terminal;
maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transport blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
Optionally, the data transmission method further includes: the terminal is configured to turn on or off multi-BWP transmissions.
Optionally, configuring the terminal to turn on or turn off multi-BWP transmission includes:
and configuring the terminal to start or close the multi-BWP transmission in an RRC connection establishment process or an RRC reconfiguration process through Radio Resource Control (RRC) signaling.
Optionally, the RRC signaling carries at least one of the following:
an indication of on or off;
the number of BWPs activated simultaneously;
BWP identification or index available to the terminal;
measurement related configuration at multiple BWPs.
Optionally, the bandwidth portion BWP available to the terminal includes:
controlling a bandwidth part BWP available to the terminal through radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available for the terminal is controlled by the radio resource control RRC signaling and the media access control unit MAC CE signaling together; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal is separately controlled through the MAC layer.
Optionally, controlling the bandwidth portion BWP available to the terminal through RRC signaling includes:
when the terminal accesses the network, configuring one or more BWPs for the terminal through an RRC signaling connection establishment signaling; and/or the presence of a gas in the gas,
in the terminal connection state, the BWP available to the terminal is modified through RRC signaling reconfiguration signaling.
Optionally, the jointly controlling the bandwidth portion BWP available to the terminal through the RRC signaling and the MAC CE signaling includes:
when a terminal accesses a network, configuring a BWP set available for the terminal through an RRC connection establishment signaling;
and the MAC layer performs activation or deactivation control through MAC CE signaling or a physical downlink control channel PDCCH.
Optionally, separately controlling the bandwidth part BWP available to the terminal through the MAC layer includes at least one of:
determining whether to start multi-BWP replication transmission or not according to a quality of service QoS characteristic value associated with a data packet of a terminal through a scheduler of a MAC layer, and if the multi-BWP replication transmission is started, performing BWP allocation during resource allocation;
enabling multi-BWP copy transmission through a scheduler of an MAC layer, and calculating the available BWP of the terminal according to the full bandwidth measurement reported by the terminal and the measurement of the BWP;
ordering the plurality of BWPs from top to bottom according to the transmission quality of the terminal thereon;
if the terminal transmits the transmitted data on the BWP, determining the transmission quality of the terminal on the BWP according to at least one of BLER generated by the first transmission of the data transmitted by the terminal, HARQ process retransmission, retransmission times and residual BLER, and sequencing the available BWPs according to the transmission quality;
in the available BWP of the terminal, the BLER generated by the first transmission is the highest priority of the BWP with 0, and then the BWP is successfully transmitted through retransmission, wherein the BWP has higher priority when the retransmission times are less; thirdly, the UE has no data transmission, and the lowest priority is BWP with residual BLER;
after finishing sequencing the available BWPs of a single terminal, determining potential UE alternative objects which can be carried on each BWP;
and determining the number of the actually distributed BWPs according to the data volume actually sent by each terminal, the quality of an air interface channel, the QoS requirement related to the data packet and the available BWPs.
Allocating wireless resources to the terminal in the available BWP;
the BWP selection information is transmitted to the terminal through DCI carried by the MAC CE or PDCCH.
Optionally, the data transmission method further includes: the receiving terminal receives feedback information on whether the transport block was successful for at least one bandwidth part BWP available to the terminal.
It should be noted that this embodiment is a network device corresponding to the foregoing method, and all implementation manners in the foregoing method embodiment are applicable to this network device embodiment, and the same technical effect can be achieved.
The embodiment of the invention also provides a data transmission device, which is applied to a terminal and comprises:
a transceiver module, configured to receive, through a multi-bandwidth part BWP, a transport block TB transmitted on at least two BWPs available to a terminal scheduled by an MAC layer of a network device, where the TB transmitted on the at least two BWPs available to the terminal is a duplicate block of the same TB.
Optionally, the capability of the terminal supporting multiple BWPs for data transmission includes at least one of the following:
the maximum BWP number supported by the terminal;
maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transport blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
Optionally, the bandwidth portion BWP available to the terminal includes:
a bandwidth part BWP available to the terminal configured by radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP which is available for the terminal and is jointly configured through the radio resource control RRC signaling and the media access control unit MAC CE signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal, which is separately configured through the MAC layer.
Optionally, the apparatus further comprises: and the processing module is used for demodulating and decoding the received transmission block TB.
Optionally, the demodulating and decoding process performed on the received transport block TB includes:
data on one or more BWPs is selected for joint decoding based on a block error rate BLER of data previously received on the respective BWPs.
Optionally, the transceiver module is further configured to send feedback information to the network device according to the decoding result.
It should be noted that this embodiment is an apparatus corresponding to the above method, and all the implementations in the above method embodiment are applicable to this apparatus embodiment, and the same technical effects can be achieved.
An embodiment of the present invention further provides a terminal, including:
a transceiver, configured to receive, through a multi-bandwidth part BWP, a transport block TB transmitted on at least two BWPs available to a MAC layer of a network device through a scheduled terminal, where the TBs transmitted on the at least two BWPs available to the terminal are duplicate blocks of the same TB.
Optionally, the terminal further includes: and the processing module is used for demodulating and decoding the received transmission block TB.
Optionally, the demodulating and decoding process performed on the received transport block TB includes:
data on one or more BWPs is selected for joint decoding based on a block error rate BLER of data previously received on the respective BWPs.
Optionally, the transceiver is further configured to send feedback information to the network device according to the decoding result.
It should be noted that this embodiment is a terminal corresponding to the foregoing method, and all implementation manners in the foregoing method embodiment are applicable to this terminal embodiment, and the same technical effect can be achieved.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above. All the implementation manners in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above. All the implementation manners in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (24)
1. A data transmission method is applied to a terminal, and the method comprises the following steps:
and receiving, by a multi-bandwidth part BWP, transport blocks TB transmitted on at least two BWPs available to a terminal scheduled by a MAC layer of a network device, where the TBs transmitted on the at least two BWPs available to the terminal are duplicate blocks of the same TB.
2. The data transmission method according to claim 1, wherein the capability of the terminal to support multiple BWPs for data transmission comprises at least one of:
the maximum BWP number supported by the terminal;
maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transport blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
3. The data transmission method according to claim 1, wherein the bandwidth portion BWP available to the terminal comprises:
a bandwidth part BWP available to the terminal configured by radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP which is available for the terminal and is jointly configured through the radio resource control RRC signaling and the media access control unit MAC CE signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal, which is separately configured through the MAC layer.
4. The data transmission method according to claim 1, further comprising:
the received transport block TB is demodulated and decoded.
5. The data transmission method of claim 4, wherein demodulating and decoding the received transport block, TB, comprises:
data on one or more BWPs is selected for joint decoding based on a block error rate BLER of data previously received on the respective BWPs.
6. The data transmission method according to claim 5, further comprising:
and sending feedback information to the network equipment according to the decoding result.
7. A data transmission method is applied to network equipment, and the method comprises the following steps:
a Media Access Control (MAC) layer of the network equipment receives data sent by an upper layer;
the network device copies and transmits the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
8. The data transmission method according to claim 7, wherein the capability of the terminal to support multi-BWP transmission of data comprises at least one of:
the maximum number of BWPs supported by the terminal;
the maximum system bandwidth supported by the terminal;
the terminal supports the detection capability of the full bandwidth of the system;
the terminal supports BWP-based reception measurement capability;
the terminal has measurement reporting capability aiming at BWP;
the terminal has different modes of measurement for full bandwidth and individual BWPs;
the terminal supports the same or different transmission blocks TB on different BWPs; wherein, the same TB is a TB transmitted by copying, and the different TB is a TB transmitted by multiple paths concurrently;
the soft buffer of the hybrid automatic repeat request HARQ process of the terminal can store TBs transmitted on different BWPs;
the terminal supports the same or different HARQ processes for TBs sent by different BWPs.
9. The data transmission method according to claim 7, further comprising:
the terminal is configured to turn on or off multi-BWP transmissions.
10. The data transmission method according to claim 9, wherein configuring the terminal to turn on or off multi-BWP transmission comprises:
and configuring the terminal to start or close the multi-BWP transmission in an RRC connection establishment process or an RRC reconfiguration process through Radio Resource Control (RRC) signaling.
11. The data transmission method according to claim 10, wherein the RRC signaling carries at least one of:
an indication of turning on or off;
the number of BWPs activated simultaneously;
BWP identification or index available for the terminal;
measurement related configuration at multiple BWPs.
12. The data transmission method according to claim 7, wherein the bandwidth portion BWP available to the terminal comprises:
controlling a bandwidth part BWP available to the terminal through radio resource control RRC signaling; alternatively, the first and second electrodes may be,
the bandwidth part BWP available for the terminal is controlled by the radio resource control RRC signaling and the media access control unit MAC CE signaling together; alternatively, the first and second electrodes may be,
the bandwidth part BWP available to the terminal is separately controlled through the MAC layer.
13. The data transmission method according to claim 12, wherein controlling the bandwidth portion BWP available to the terminal through RRC signaling comprises:
when the terminal accesses the network, configuring one or more BWPs for the terminal through RRC signaling connection establishment signaling; and/or the presence of a gas in the gas,
in the terminal connection state, the BWP available to the terminal is modified through RRC signaling reconfiguration signaling.
14. The data transmission method according to claim 12, wherein jointly controlling the bandwidth portion BWP available to the terminal through radio resource control RRC signaling and medium access control element MAC CE signaling comprises:
when a terminal accesses a network, configuring a BWP set available for the terminal through an RRC connection establishment signaling;
and the MAC layer performs activation or deactivation control through MAC CE signaling or a physical downlink control channel PDCCH.
15. The data transmission method according to claim 12, wherein the bandwidth part BWP available to the terminal is separately controlled by the MAC layer, comprising at least one of:
determining whether to start multi-BWP replication transmission or not according to a quality of service QoS characteristic value associated with a data packet of a terminal through a scheduler of a MAC layer, and if the multi-BWP replication transmission is started, performing BWP allocation during resource allocation;
enabling multi-BWP copy transmission through a scheduler of an MAC layer, and calculating the available BWP of the terminal according to the full bandwidth measurement reported by the terminal and the measurement of the BWP;
ordering the available multiple BWPs;
controlling the priority of the multiple BWPs;
after finishing sequencing the available BWPs of a single terminal, determining potential terminal candidate objects which can be carried on each BWP;
determining the number of the BWPs actually distributed according to the data volume actually sent by each terminal, the quality of an air interface channel, the QoS requirement related to a data packet and the available BWPs;
allocating wireless resources to the terminal in the available BWP;
the BWP selection information is transmitted to the terminal through DCI carried by the MAC CE or PDCCH.
16. The data transmission method according to claim 15, wherein the ordering of the available multiple BWPs comprises at least one of:
ordering the multiple BWPs according to the transmission quality of the terminal on the BWPs from top to bottom;
if the terminal transmits the data on the BWP, determining the transmission quality of the terminal on the BWP according to at least one of BLER generated by the first transmission of the data transmitted by the terminal, the retransmission times and the residual BLER, and sequencing the available BWPs according to the transmission quality.
17. The data transmission method according to claim 15, wherein controlling the priority of the multiple BWPs comprises:
in the available BWP of the terminal, BLER that the first transmission produces is the highest priority of BWP of 0, second through retransmitting, BWP successful of final transmission, wherein the retransmission times is the more the BWP is higher in priority; for data that the terminal has not transmitted, the lowest priority is BWP with residual BLER.
18. The data transmission method according to claim 7, further comprising:
the receiving terminal receives feedback information on whether the transport block was successful for at least one bandwidth part BWP available to the terminal.
19. An apparatus for data transmission, applied to a Medium Access Control (MAC) layer of a network device, the apparatus comprising:
the receiving and sending module is used for receiving data sent by an upper layer; and copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and available for the terminal.
20. A network device, comprising: (ii) a
The transceiver of the media access control MAC layer of the network equipment is used for receiving data sent by an upper layer; and copying and transmitting the transmission block TB of the data to the terminal through at least two bandwidth parts BWP which are scheduled by the MAC layer and are available for the terminal.
21. An apparatus for transmitting data, the apparatus being applied to a terminal, the apparatus comprising:
a transceiver module, configured to receive, through a multi-bandwidth part BWP, a transport block TB transmitted on at least two BWPs available to a terminal scheduled by an MAC layer of a network device, where the TB transmitted on the at least two BWPs available to the terminal is a duplicate block of the same TB.
22. A terminal, comprising:
the transceiver is configured to receive, through a multi-bandwidth part BWP, a transport block TB transmitted on at least two BWPs that are available to a terminal and scheduled by a MAC layer of a network device, where the TB transmitted on the at least two BWPs that are available to the terminal are duplicate blocks of the same TB.
23. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any of claims 1 to 6 or the method of any of claims 7 to 16.
24. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 6 or the method of any of claims 7 to 16.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001402.3A CN114727331A (en) | 2021-01-04 | 2021-01-04 | Data transmission method, device, terminal and network equipment |
| PCT/CN2021/140406 WO2022143327A1 (en) | 2021-01-04 | 2021-12-22 | Data transmission method and apparatus, terminal, and network device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001402.3A CN114727331A (en) | 2021-01-04 | 2021-01-04 | Data transmission method, device, terminal and network equipment |
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| CN114727331A true CN114727331A (en) | 2022-07-08 |
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| WO2019159297A1 (en) * | 2018-02-15 | 2019-08-22 | 株式会社Ｎｔｔドコモ | User terminal and wireless communications method |
| US11109397B2 (en) * | 2018-05-18 | 2021-08-31 | Comcast Cable Communications, Llc | Cross-carrier scheduling with multiple active bandwidth parts |
| CN110972205B (en) * | 2018-09-28 | 2021-08-13 | 华为技术有限公司 | Communication method and device |
| CN110971349B (en) * | 2018-09-28 | 2021-06-08 | 电信科学技术研究院有限公司 | Repeated transmission method, terminal and network side equipment |
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