CN110536360B - BWP switching method, device and storage medium based on downlink control signaling - Google Patents

BWP switching method, device and storage medium based on downlink control signaling Download PDF

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Publication number
CN110536360B
CN110536360B CN201810502954.0A CN201810502954A CN110536360B CN 110536360 B CN110536360 B CN 110536360B CN 201810502954 A CN201810502954 A CN 201810502954A CN 110536360 B CN110536360 B CN 110536360B
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China
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bwp
downlink control
control signaling
uplink resource
indicating
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CN110536360A (en
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周伟
倪吉庆
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • 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]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a BWP switching method, a BWP switching device and a storage medium based on downlink control signaling, which are used for reducing uplink transmission interference of a user and waste of system resources in a BWP switching process. The BWP switching method based on the downlink control signaling comprises the following steps: sending a downlink control signaling for indicating BWP switching to the UE on the original BWP; detecting whether hybrid automatic repeat-acknowledgement (HARQ-ACK) information fed back by the UE is received or not on a first uplink resource, wherein the first uplink resource is an uplink resource which is configured for the UE on an original BWP and is used for feeding back the HARQ-ACK information; and if HARQ-ACK information fed back by the UE is detected on the first uplink resource, continuously sending a downlink control signaling for indicating BWP switching to the UE on the original BWP until the UE is determined to correctly receive the downlink control signaling for indicating BWP switching.

Description

BWP switching method, device and storage medium based on downlink control signaling
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a BWP handover method and apparatus based on downlink control signaling, and a storage medium.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
In NR (New Radio, new air interface), due to an increase in system Bandwidth, in order to adapt to Bandwidth capabilities of different terminals and reduce energy consumption for terminal detection, NR divides a plurality of BWPs (Bandwidth parts) in the system Bandwidth. The 3gpp NR r15 standard specifies that each UE (User Equipment) has only one active BWP at the same time. Meanwhile, in order to support more flexible bandwidth adaptation, a Downlink Control Information (DCI) -based BWP switching mechanism is supported in the NR standard, that is, the base station indicates that the DCI is a resource allocation for scheduling a current BWP or a target BWP through a BWP identifier indicated in a BWP indicator bit field in the DCI. After receiving the DCI, if the BWP identifier indicated in the BWP indicator bit field is not found to be the current BWP, the UE performs BWP handover and transmits/receives data on the target BWP according to the scheduling information in the DCI.
As shown in fig. 1a and fig. 1b, after the UE receives a DCI instructing switching of downlink and uplink BWP, the UE does not need to feed back the DCI instructing switching of uplink/downlink BWP, that is, HARQ-ACK information of downlink scheduling before the DCI on slot #2 in fig. 1, that is, HARQ-ACK information of downlink scheduling on slot #0 and slot #1 in fig. 1a and fig. 1b, according to the current specification in NR standard. In the transition time (transition time) of BWP switching, for example, in fig. 1a and 1b, in the time period between the uplink scheduling DCI of slot #2 and the PUSCH transmission start symbol of the scheduled slot #4, the UE does not receive downlink data nor transmit uplink data. In fig. 1a and 1b, slot #0, slot #1, slot #2, and slot #5 are downlink slots, and slot #4 is an uplink slot.
However, current NR standards do not consider the case where the UE does not detect DCI indicating uplink/downlink BWP handover. As shown in fig. 2a and 2b, slot #0, slot #1, slot #2, and slot #5 are downlink slots, slot #4 is an uplink slot, and the UE does not detect DCI indicating BWP switching in slot # 2. Then the UE will continue: 1) Feeding back HARQ-ACK information of downlink scheduling on slot #0 and slot #1 on the originally configured uplink resource; 2) PDCCH detection is performed on the control resource set (CORESET) on the original BWP, thus resulting in: 1) The interference is generated when the collision occurs with other uplink transmission users scheduled by the base station; 2) The base station will send DCI on the switched target BWP, so that the UE cannot receive DCI all the time, and the base station will consider that the user has no correct downlink scheduling data and retransmit the user data all the time, resulting in waste of system resources.
Disclosure of Invention
The embodiment of the invention provides a BWP switching method, a BWP switching device and a storage medium based on downlink control signaling, which are used for reducing user uplink transmission interference and system resource waste in a BWP switching process.
In a first aspect, a BWP handover method based on downlink control signaling is provided, including:
sending a downlink control signaling indicating BWP switching to User Equipment (UE) on an original bandwidth segment BWP;
detecting whether hybrid automatic repeat-acknowledgement (HARQ-ACK) information fed back by the UE is received or not on a first uplink resource, wherein the first uplink resource is an uplink resource which is configured for the UE on the original BWP and is used for feeding back the HARQ-ACK information;
and if HARQ-ACK information fed back by the UE is detected on the first uplink resource, continuously sending a downlink control signaling for indicating BWP switching to the UE on the original BWP until the UE is determined to correctly receive the downlink control signaling for indicating BWP switching.
Optionally, the downlink control signaling for instructing BWP handover includes a target BWP identifier, a downlink scheduling identifier, and a second uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after handover, and the second uplink resource identifier is used to indicate a second uplink resource configured for the UE on the target BWP and used to feed back HARQ-ACK information; and
judging whether the UE correctly receives the downlink control signaling indicating the BWP switching according to the following procedures:
judging whether HARQ-ACK information fed back by the UE is detected on a second uplink resource of the target BWP;
if yes, determining that the UE correctly receives the downlink control signaling indicating the BWP switching;
if not, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
Optionally, the downlink control signaling indicating the BWP handover includes a target BWP identifier, an uplink scheduling identifier, and a third uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after the handover, and the third uplink resource identifier is used to indicate a third uplink resource that is scheduled by the UE on the target BWP and is used to send uplink data; and
judging whether the UE correctly receives the downlink control signaling indicating the BWP switching according to the following procedures:
judging whether uplink data sent by the UE is correctly received on a third uplink resource of the target BWP;
if yes, determining that the UE correctly receives the downlink control signaling indicating the BWP switching;
and if not, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
Optionally, after determining that the UE correctly receives the downlink control signaling indicating BWP handover, the method further includes:
and sending downlink control signaling and downlink data to the UE on the target BWP.
Optionally, after determining that the UE correctly receives the downlink control signaling indicating BWP handover, the method further includes:
and releasing the first uplink resource.
In a second aspect, a BWP switching device based on downlink control signaling is provided, including:
a first sending unit, configured to send a downlink control signaling indicating BWP handover to a user equipment UE on an original BWP; if the detection unit detects HARQ-ACK information fed back by the UE on the first uplink resource, the detection unit continuously sends a downlink control signaling indicating BWP switching to the UE on the original BWP until the UE is determined to correctly receive the downlink control signaling indicating BWP switching;
a detecting unit, configured to detect whether hybrid automatic repeat-acknowledge, HARQ-ACK, information fed back by the UE is received on a first uplink resource, where the first uplink resource is an uplink resource configured for the UE on an original BWP and used for feeding back HARQ-ACK information.
Optionally, the downlink control signaling indicating BWP handover includes a target BWP identifier, a downlink scheduling identifier, and a second uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after handover, and the second uplink resource identifier is used to indicate a second uplink resource configured for the UE on the target BWP and used to feed back HARQ-ACK information; and
the device, still include:
a determining unit, configured to determine whether HARQ-ACK information fed back by the UE is detected on a second uplink resource of the target BWP;
a determining unit, configured to determine, according to a determination result of the determining unit, that the UE correctly receives the downlink control signaling indicating BWP handover if the determination result is yes; and if the judgment result is negative, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
Optionally, the downlink control signaling indicating the BWP handover includes a target BWP identifier, an uplink scheduling identifier, and a third uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after the handover, and the third uplink resource identifier is used to indicate a third uplink resource that is scheduled by the UE on the target BWP and is used to send uplink data; and
the device, still include:
a second determining unit, configured to determine whether uplink data sent by the UE is correctly received on a third uplink resource of the target BWP;
a second determining unit, configured to determine, according to a determination result of the determining unit, that the UE correctly receives the downlink control signaling indicating BWP handover if the determination result is yes; and if the judgment result is negative, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
Optionally, the BWP switching device based on the downlink control signaling provided in the embodiment of the present invention further includes:
a second sending unit, configured to send, after the determining unit determines that the UE correctly receives the downlink control signaling indicating BWP handover, the downlink control signaling and downlink data to the UE on the target BWP.
Optionally, the BWP switching device based on downlink control signaling according to the embodiment of the present invention further includes:
a resource releasing unit, configured to release the first uplink resource after the determining unit determines that the UE correctly receives the downlink control signaling indicating BWP handover.
In a third aspect, a communication apparatus is provided, including: a processor, a memory, and a transceiver; wherein the memory stores computer programs, and the processor is configured to read the programs in the memory and execute the steps of any of the above methods.
In a fourth aspect, a computer storage medium is provided, the computer storage medium having stored thereon computer-executable instructions for causing the computer to perform the steps of any of the methods described above.
In the BWP switching method, apparatus and storage medium based on downlink control signaling provided in the embodiments of the present invention, after sending the downlink control signaling indicating BWP switching to the UE, the base station detects whether HARQ-ACK information fed back by the UE is received at the original BWP, and if so, it indicates that the UE does not receive the downlink control signaling indicating BWP switching, and the base station continues to send the downlink control signaling indicating BWP switching to the UE on the original BWP until it is determined that the UE receives the downlink control signaling indicating BWP switching. In the above process, after the base station sends the downlink control signaling indicating the BWP handover, the base station retains the original BWP until determining that the UE receives the downlink control signaling indicating the BWP handover, thereby reducing the interference of the user on the original BWP and the waste of system resources.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention. In the drawings:
fig. 1a is a schematic diagram of downlink BWP handover in the prior art;
FIG. 1b is a schematic diagram of uplink BWP handoff in the prior art;
fig. 2a is a diagram illustrating a UE not detecting downlink BWP handover in the prior art;
fig. 2b is a diagram illustrating that the UE does not detect the uplink BWP handover in the prior art;
fig. 3 is a schematic diagram illustrating an implementation flow of a BWP handover method based on downlink control signaling in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a BWP switching apparatus based on downlink control signaling in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
In order to reduce interference between users and waste of system resources during BWP handover, embodiments of the present invention provide a BWP handover method and apparatus based on downlink control signaling, and a storage medium.
It should be noted that, the "plurality" or "a plurality" mentioned herein means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Furthermore, the terms "first," "second," and the like in the description and in the claims, as well as in the drawings, in the embodiments of the invention, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein.
In addition, the original BWP and the target BWP related in the embodiment of the present invention are relative, where the original BWP refers to the BWP before the handover, and the target BWP refers to the BWP after the handover.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
As shown in fig. 3, which is a schematic flowchart of an implementation of a BWP handover method based on downlink control signaling according to an embodiment of the present invention, the method may include the following steps:
s31, sending a downlink control signaling indicating BWP switching to the user equipment UE on the original BWP.
In particular implementation, when the base station may send DCI indicating BWP handover to the UE on the original BWP.
And S32, detecting whether HARQ-ACK information fed back by the UE is received or not on the first uplink resource.
The first uplink resource is an uplink resource configured for the UE on the original BWP and used for feeding back HARQ-ACK (hybrid automatic repeat-acknowledgement) information.
S33, if HARQ-ACK information fed back by the UE is detected on the first uplink resource, continuously sending a downlink control signaling for indicating BWP switching to the UE on the original BWP until the UE is determined to correctly receive the downlink control signaling for indicating BWP switching.
In the embodiment of the invention, after a base station sends DCI indicating BWP switching to UE, the base station reserves uplink resources of feedback HARQ-ACK configured for the UE on the original BWP, detects whether the UE sends HARQ-ACK information on the uplink resources, if the UE sends the HARQ-ACK information, the UE does not correctly receive downlink control signaling indicating BWP switching, and the base station continues to send the downlink control signaling indicating BWP switching to the UE on the original BWP until the UE correctly receives the downlink control signaling indicating BWP switching.
In an embodiment, the downlink control signaling indicating BWP handover includes a target BWP identifier, a downlink scheduling identifier indicating downlink scheduling, and a second uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after handover, and the second uplink resource identifier is used to indicate a second uplink resource configured for the UE on the target BWP and used to feed back HARQ-ACK information.
In this embodiment, whether the UE receives downlink control signaling indicating BWP handover may be determined according to the following procedure: judging whether HARQ-ACK information fed back by the UE is detected on a second uplink resource of the target BWP; if yes, determining that the UE correctly receives a downlink control signaling indicating the BWP switching; if not, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
In another embodiment, the downlink control signaling indicating the BWP handover includes a target BWP identifier, an uplink scheduling identifier indicating uplink scheduling, and a third uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after handover, and the third uplink resource identifier is used to indicate a third uplink resource that is scheduled by the UE on the target BWP and transmits uplink data.
In this embodiment, it may be determined whether the UE correctly receives the downlink control signaling indicating BWP handover according to the following procedure: judging whether uplink data sent by the UE is correctly received on a third uplink resource of the target BWP; if yes, determining that the UE correctly receives the downlink control signaling indicating the BWP switching; and if not, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
In specific implementation, after determining that the UE correctly receives the downlink control signaling indicating BWP handover, the base station sends the downlink control signaling and downlink data to the UE on the target BWP. Before determining that the UE correctly receives the downlink control signaling indicating the BWP handover, that is, before the base station does not detect HARQ-ACK information fed back by the UE on the second uplink resource of the target BWP or receives the uplink data sent by the UE, the base station does not send DCI and downlink data to the UE on the target BWP. In addition, in the embodiment of the invention, after the base station determines that the UE correctly receives the downlink control signaling indicating the BWP switching, the base station releases the uplink resource which is configured for the UE and feeds back the HARQ-ACK information on the original BWP.
It should be noted that the downlink control signaling for instructing BWP handover in the embodiment of the present invention includes downlink control signaling for instructing downlink BWP handover and downlink control signaling for instructing uplink BWP handover. For better understanding of the embodiments of the present invention, the following describes the embodiments of the present invention with reference to the downlink BWP handover and uplink BWP handover processes, respectively.
In specific implementation, after a base station sends DCI indicating downlink BWP switching to UE, the base station side reserves an uplink resource for feeding back HARQ-ACK information configured for the UE on the original BWP, and detects whether the UE sends the HARQ-ACK information on the uplink resource; when the base station detects HARQ-ACK information of the UE on an uplink resource configured for the UE by the original BWP, the base station continuously sends DCI for indicating downlink BWP switching on the original BWP until the UE is determined to correctly receive downlink control signaling for indicating the BWP switching. In the embodiment of the invention, if the base station detects the HARQ-ACK information fed back by the UE on the uplink resource which is configured for the UE on the target BWP and feeds back the HARQ-ACK information, the UE is determined to correctly receive the downlink control signaling for indicating the switching of the BWP.
In addition, on the target BWP, whether the UE sends the HARQ-ACK information or not is detected on the uplink resource indicated by the DCI for indicating the BWP switching, before the HARQ-ACK information of the UE is detected on the uplink resource for feeding back the HARQ-ACK information configured for the UE on the target BWP, the base station does not send the DCI and the downlink data on the target BWP until the HARQ-ACK information of the UE is detected on the uplink resource for feeding back the HARQ-ACK information configured for the UE on the target BWP, and the base station does not start to send the DCI and the downlink data on the UE on the target BWP. In addition, when the base station detects the HARQ-ACK information of the UE on the uplink resource of the feedback HARQ-ACK information configured for the UE on the target BWP, the uplink resource of the feedback HARQ-ACK information configured for the UE on the original BWP is released.
In specific implementation, after a base station sends DCI indicating uplink BWP switching to UE, the base station side reserves uplink resources for feeding back HARQ-ACK information configured for the UE on original BWP, and detects whether the UE sends the HARQ-ACK information on the uplink resources; when the base station detects HARQ-ACK information of the UE on the uplink resource configured for the UE by the original BWP, the base station continues to send DCI indicating downlink BWP switching on the original BWP until the UE is determined to correctly receive downlink control signaling indicating the BWP switching. In the embodiment of the invention, if the base station correctly receives the uplink data sent by the UE on the uplink resource which is scheduled for the UE on the target BWP and used for sending the uplink data, the base station determines that the UE correctly receives the downlink control signaling for indicating the switching of the BWP.
In addition, on the target BWP, the base station does not transmit the DCI and the downlink data on the target BWP until the uplink data transmitted by the UE is correctly received on the uplink resource scheduled for the UE on the target BWP for transmitting the uplink data, and the base station does not start transmitting the DCI and the downlink data on the target BWP to the UE on the target BWP until the uplink data transmitted by the UE is correctly received on the uplink resource scheduled for the UE on the target BWP for transmitting the uplink data. In addition, when the base station correctly receives the uplink data sent by the UE on the uplink resource scheduled by the UE on the target BWP for sending the uplink data, the uplink resource configured for the UE to feed back the HARQ-ACK information on the original BWP is released.
In the embodiment of the invention, after a base station sends a downlink control signaling for indicating BWP switching to UE, the base station detects whether HARQ-ACK information fed back by the UE is received or not at the original BWP, if so, the base station indicates that the UE does not receive the downlink control signaling for indicating BWP switching, and the base station continues to send the downlink control signaling for indicating BWP switching to the UE at the original BWP until the UE is determined to receive the downlink control signaling for indicating BWP switching. In the above process, after the base station sends the downlink control signaling indicating the BWP handover, the base station retains the original BWP until determining that the UE receives the downlink control signaling indicating the BWP handover, thereby reducing the interference of the user on the original BWP and the waste of system resources.
Based on the same inventive concept, the present invention further provides a BWP handover apparatus based on downlink control signaling, and since the principle of solving the problem of the apparatus is similar to that of the BWP handover method based on downlink control signaling, the implementation of the apparatus may refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 4, a schematic structural diagram of a BWP handover device based on downlink control signaling according to an embodiment of the present invention includes:
a first sending unit 41, configured to send a downlink control signaling indicating BWP handover to the user equipment UE on an original BWP; if the detection unit 42 detects HARQ-ACK information fed back by the UE on the first uplink resource, continuously sending a downlink control signaling indicating BWP switching to the UE on the original BWP until it is determined that the UE correctly receives the downlink control signaling indicating BWP switching;
a detecting unit 42, configured to detect whether hybrid automatic repeat-acknowledge HARQ-ACK information fed back by the UE is received on a first uplink resource, where the first uplink resource is an uplink resource configured for the UE on an original BWP and used for feeding back HARQ-ACK information.
Optionally, the downlink control signaling for instructing BWP handover includes a target BWP identifier, a downlink scheduling identifier, and a second uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after handover, and the second uplink resource identifier is used to indicate a second uplink resource configured for the UE on the target BWP and used to feed back HARQ-ACK information; and
the device, still include:
a first determining unit, configured to determine whether HARQ-ACK information fed back by the UE is detected on a second uplink resource of the target BWP;
a first determining unit, configured to determine, according to a determination result of the determining unit, that the UE correctly receives the downlink control signaling indicating BWP handover if the determination result is yes; and if the judgment result is negative, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
Optionally, the downlink control signaling indicating the BWP handover includes a target BWP identifier, an uplink scheduling identifier, and a third uplink resource identifier, where the target BWP identifier is used to indicate the target BWP after handover, and the third uplink resource identifier is used to indicate a third uplink resource that is scheduled by the UE on the target BWP and transmits uplink data; and
the device, still include:
a second determining unit, configured to determine whether uplink data sent by the UE is correctly received on a third uplink resource of the target BWP;
a second determining unit, configured to determine, according to a determination result of the determining unit, that the UE correctly receives the downlink control signaling indicating BWP handover if the determination result is yes; and if the judgment result is negative, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
Optionally, the BWP switching device based on downlink control signaling according to the embodiment of the present invention further includes:
a second sending unit, configured to send, after the determining unit determines that the UE correctly receives the downlink control signaling indicating BWP handover, the downlink control signaling and downlink data to the UE on the target BWP.
Optionally, the BWP switching device based on the downlink control signaling provided in the embodiment of the present invention further includes:
a resource releasing unit, configured to release the first uplink resource after the determining unit determines that the UE correctly receives the downlink control signaling indicating BWP handover.
For convenience of description, the above parts are separately described as modules (or units) according to functional division. Of course, the functionality of the various modules (or units) may be implemented in the same or in multiple pieces of software or hardware in practicing the invention.
Based on the same technical concept, the embodiment of the present application further provides a communication device, which can implement the method in the foregoing embodiment.
Referring to fig. 5, a schematic structural diagram of a communication device according to an embodiment of the present invention is shown in fig. 5, where the communication device may include: a processor 501, a memory 502, a transceiver 503, and a bus interface.
The processor 501 is responsible for managing the bus architecture and general processing, and the memory 502 may store data used by the processor 501 in performing operations. The transceiver 503 is used to receive and transmit data under the control of the processor 501.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 501, and various circuits, represented by memory 502, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 501 is responsible for managing the bus architecture and general processing, and the memory 502 may store data used by the processor 501 in performing operations.
The process disclosed in the embodiment of the present invention may be applied to the processor 501, or implemented by the processor 501. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 501. The processor 501 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the BWP switching method based on the downlink control signaling disclosed in the embodiments of the present invention may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the signal processing flow in combination with the hardware thereof.
Specifically, the processor 501 is configured to read a program in a memory, and execute any step of the BWP handover method based on the downlink control signaling.
Based on the same technical concept, the embodiment of the application also provides a computer storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform any of the steps of the foregoing downlink control signaling-based BWP handover method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (12)

1. A BWP switching method based on downlink control signaling is characterized by comprising the following steps:
sending a downlink control signaling indicating BWP switching to User Equipment (UE) on an original bandwidth segment BWP;
detecting whether hybrid automatic repeat-acknowledgement (HARQ-ACK) information fed back by the UE is received or not on a first uplink resource, wherein the first uplink resource is an uplink resource which is configured for the UE on the original BWP and is used for feeding back the HARQ-ACK information;
and if HARQ-ACK information fed back by the UE is detected on the first uplink resource, continuously sending a downlink control signaling for indicating BWP switching to the UE on the original BWP until the UE is determined to correctly receive the downlink control signaling for indicating BWP switching.
2. The method according to claim 1, wherein the downlink control signaling for indicating BWP handover includes a target BWP id, a downlink scheduling id and a second uplink resource id, where the target BWP id is used to indicate the target BWP after handover, and the second uplink resource id is used to indicate a second uplink resource configured for the UE on the target BWP for feeding back HARQ-ACK information; and
judging whether the UE correctly receives the downlink control signaling indicating the BWP switching according to the following procedures:
judging whether HARQ-ACK information fed back by the UE is detected on a second uplink resource of the target BWP;
if yes, determining that the UE correctly receives the downlink control signaling indicating the BWP switching;
and if not, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
3. The method of claim 1, wherein the downlink control signaling for indicating BWP handover includes a target BWP id, an uplink scheduling id, and a third uplink resource id, where the target BWP id is used to indicate the target BWP after handover, and the third uplink resource id is used to indicate a third uplink resource scheduled for the UE on the target BWP to transmit uplink data; and
judging whether the UE correctly receives the downlink control signaling indicating the BWP switching according to the following procedures:
judging whether uplink data sent by the UE is correctly received on a third uplink resource of the target BWP;
if yes, determining that the UE correctly receives the downlink control signaling indicating the BWP switching;
and if not, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
4. The method of claim 2 or 3, wherein after determining that the UE correctly receives the downlink control signaling indicating BWP handover, further comprising:
and sending downlink control signaling and downlink data to the UE on the target BWP.
5. The method of claim 1, 2 or 3, wherein after determining that the UE correctly received the downlink control signaling indicating BWP handover, further comprising:
and releasing the first uplink resource.
6. A BWP switching device based on downlink control signaling, comprising:
a first sending unit, configured to send a downlink control signaling indicating BWP handover to a user equipment UE on an original BWP; if the detection unit detects HARQ-ACK information fed back by the UE on the first uplink resource, the detection unit continuously sends a downlink control signaling for indicating BWP switching to the UE on the original BWP until the UE is determined to correctly receive the downlink control signaling for indicating BWP switching;
a detecting unit, configured to detect whether hybrid automatic repeat-acknowledge, HARQ-ACK, information fed back by the UE is received on a first uplink resource, where the first uplink resource is an uplink resource configured for the UE on an original BWP and used for feeding back HARQ-ACK information.
7. The apparatus of claim 6, wherein the downlink control signaling for indicating BWP handover includes a target BWP id, a downlink scheduling id and a second uplink resource id, the target BWP id is used to indicate the target BWP after handover, and the second uplink resource id is used to indicate a second uplink resource configured for the UE on the target BWP for feeding back HARQ-ACK information; and
the device, still include:
a first determining unit, configured to determine whether HARQ-ACK information fed back by the UE is detected on a second uplink resource of the target BWP;
a first determining unit, configured to determine, according to a determination result of the determining unit, that the UE correctly receives the downlink control signaling indicating BWP handover if the determination result is yes; and if the judgment result is negative, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
8. The apparatus of claim 6, wherein the downlink control signaling for indicating BWP handover includes a target BWP id, an uplink scheduling id, and a third uplink resource id, where the target BWP id is used to indicate the target BWP after handover, and the third uplink resource id is used to indicate a third uplink resource for transmitting uplink data scheduled for the UE on the target BWP; and
the device, still include:
a second determining unit, configured to determine whether uplink data sent by the UE is correctly received on a third uplink resource of the target BWP;
a second determining unit, configured to determine, according to a determination result of the determining unit, that the UE correctly receives the downlink control signaling indicating BWP handover if the determination result is yes; and if the judgment result is negative, determining that the UE does not correctly receive the downlink control signaling indicating the BWP switching.
9. The apparatus of claim 6 or 7, further comprising:
a second sending unit, configured to send downlink control signaling and downlink data to the UE on the target BWP after the determining unit determines that the UE correctly receives the downlink control signaling indicating BWP handover.
10. The apparatus of claim 6, 7 or 8, further comprising:
a resource releasing unit, configured to release the first uplink resource after the determining unit determines that the UE correctly receives the downlink control signaling indicating BWP handover.
11. A communications apparatus, comprising: a processor, a memory, and a transceiver; wherein the memory stores a computer program and the processor, reading the program in the memory, performs the method of any of claims 1 to 5.
12. A computer storage medium having computer-executable instructions stored thereon for causing a computer to perform the method of any one of claims 1 to 5.
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