CN111278096A - Indication method, device and storage medium for channel monitoring - Google Patents
Indication method, device and storage medium for channel monitoring Download PDFInfo
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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- H04W74/00—Wireless channel access
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- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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- 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
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Abstract
The present disclosure relates to the field of communications technologies, and in particular, to an indication method and an indication device for channel monitoring, and a storage medium. The method comprises the following steps: the user equipment receives downlink control information, wherein the downlink control information is used for indicating whether to stop monitoring the physical downlink control channel and/or the duration of stopping monitoring the physical downlink control channel. The embodiment of the disclosure combines the information indicating the switching of the monitoring behavior of the physical downlink control channel with the current downlink control information to complete the switching indication of the monitoring state of the physical downlink control channel, so that the user equipment monitors the physical downlink control channel or stops monitoring according to the indication of the downlink control information, each physical downlink control channel does not need to be monitored, the power consumption of the user equipment is reduced, and the monitoring behavior of the physical downlink control channel is optimized.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an indication method and an indication device for channel monitoring, and a storage medium.
Background
Packet-based data streams are typically bursty, with data being transmitted for a period of time, but not for the next longer period of time. When there is no data transmission, a User Equipment (UE) may reduce power consumption by stopping monitoring a Physical Downlink Control Channel (PDCCH), thereby improving battery service life.
In the related art, a Discontinuous Reception (DRX) mechanism is provided, where the DRX mechanism configures a Discontinuous Reception cycle (english: DRX cycle) for a user equipment in a Radio Resource Control (RRC) connected state, so that the user equipment may not receive a physical downlink Control channel in a non-Reception period of the DRX cycle.
However, no suitable solution has been provided in the related art for how to optimize the indication of the listening behavior of the physical downlink control channel.
Disclosure of Invention
In view of this, the present disclosure provides a method and an apparatus for indicating channel sensing, and a storage medium.
The technical scheme comprises the following steps:
according to an aspect of the present disclosure, there is provided a method for indicating channel sensing, which is used in a user equipment, the method including:
receiving Downlink Control Information (DCI), where the DCI is used to indicate whether to stop monitoring a physical Downlink Control channel and/or stop monitoring a duration of the physical Downlink Control channel.
In a possible implementation manner, the downlink control information carries a first scheduling delay field, where the first scheduling delay field is used to indicate whether to stop monitoring the physical downlink control channel.
In another possible implementation manner, after receiving the downlink control information, the method further includes:
and when the scheduling delay indicated by the first scheduling delay domain is smaller than the limit value of the minimum scheduling delay, stopping monitoring the physical downlink control channel.
In another possible implementation manner, the stopping monitoring the physical downlink control channel includes:
stopping monitoring the physical downlink control channel in n time units after the downlink control information is received, wherein n is a value pre-configured by a high layer or an integer determined based on the downlink control information, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel or a monitoring opportunity of the physical downlink control channel.
In another possible implementation manner, the n is a unit number corresponding to a scheduling delay indicated by the first scheduling delay field and is preconfigured; or, the n is the unit number indicated by the designated field of the downlink control information.
In another possible implementation manner, the time domain resource allocation field of the downlink control information is used to indicate a duration for stopping monitoring the physical downlink control channel.
In another possible implementation manner, the method further includes:
and stopping monitoring the physical downlink control channel when receiving indication information or the downlink control information carries a bit for indicating stopping monitoring the physical downlink control channel, wherein the indication information is used for indicating limiting the minimum scheduling delay.
In another possible implementation manner, a second scheduling delay is carried in a time domain resource allocation domain of the downlink control information, where the second scheduling delay is used to indicate that a duration for stopping monitoring the physical downlink control channel is n time units, and the method further includes:
stopping monitoring the physical downlink control channel within the n time units after the downlink control information is received, wherein n is an integer, and the time unit is a time slot or a subframe or a second or a millisecond or a monitoring period of the physical downlink control channel or a monitoring opportunity of the physical downlink control channel.
In another possible implementation manner, the n is a product of the second scheduling delay and a preset multiple value; or the n is a unit number corresponding to the second scheduling delay in a pre-configuration mode.
According to another aspect of the present disclosure, there is provided an indication apparatus for channel sensing, for use in a user equipment, the apparatus including:
a receiving module, configured to receive downlink control information, where the downlink control information is used to indicate whether to stop monitoring a physical downlink control channel and/or stop monitoring a duration of the physical downlink control channel.
In a possible implementation manner, the downlink control information carries a first scheduling delay field, where the first scheduling delay field is used to indicate whether to stop monitoring the physical downlink control channel.
In another possible implementation manner, the apparatus further includes: a first processing module; the first processing module is configured to stop monitoring the physical downlink control channel when the scheduling delay indicated by the first scheduling delay domain is smaller than a limit value of a minimum scheduling delay.
In another possible implementation manner, the processing module is further configured to stop monitoring the physical downlink control channel in n time units after the downlink control information is received, where n is a value preconfigured by a higher layer or an integer determined based on the downlink control information, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel, or a monitoring time of the physical downlink control channel.
In another possible implementation manner, the n is a unit number corresponding to a scheduling delay indicated by the first scheduling delay field and is preconfigured; or, the n is the unit number indicated by the designated field of the downlink control information.
In another possible implementation manner, the time domain resource allocation field of the downlink control information is used to indicate a duration for stopping monitoring the physical downlink control channel.
In another possible implementation manner, the apparatus further includes: a second processing module; the second processing module is configured to stop monitoring the physical downlink control channel when indication information is received or the downlink control information carries a bit indicating that monitoring of the physical downlink control channel is stopped, where the indication information is used to indicate that a minimum scheduling delay is limited.
In another possible implementation manner, a second scheduling delay is carried in a time domain resource allocation domain of the downlink control information, where the second scheduling delay is used to indicate that a duration for stopping monitoring the physical downlink control channel is n time units, and the apparatus further includes: a third processing module; the third processing module is configured to stop monitoring the physical downlink control channel in the n time units after the downlink control information is received, where n is an integer, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel, or a monitoring time of the physical downlink control channel.
In another possible implementation manner, the n is a product of the second scheduling delay and a preset multiple value; or the n is a unit number corresponding to the second scheduling delay in a pre-configuration mode.
According to another aspect of the present disclosure, there is provided a user equipment including: a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to: receiving downlink control information, wherein the downlink control information is used for indicating whether to stop monitoring a physical downlink control channel and/or stop monitoring the duration of the physical downlink control channel.
According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the above-described method.
The method comprises the steps that downlink control information is received through user equipment, and the downlink control information is used for indicating whether to stop monitoring a physical downlink control channel and/or the duration of stopping monitoring the physical downlink control channel; the information indicating the switching of the monitoring behavior of the physical downlink control channel is combined with the current downlink control information to complete the switching indication of the monitoring state of the physical downlink control channel, so that the user equipment monitors the physical downlink control channel or stops monitoring according to the indication of the downlink control information, each physical downlink control channel is not required to be monitored, the power consumption of the user equipment is reduced, and the monitoring behavior of the physical downlink control channel is optimized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a mobile communication system provided in an exemplary embodiment of the present disclosure;
fig. 2 is a flowchart illustrating an indication method of channel listening according to an exemplary embodiment of the present disclosure;
fig. 3 shows a flowchart of an indication method of channel listening provided by another exemplary embodiment of the present disclosure;
fig. 4 is a flowchart illustrating an indication method of channel listening according to another exemplary embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating a principle involved in an indication method of channel listening according to an exemplary embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an indication apparatus for channel listening according to an exemplary embodiment of the present disclosure;
fig. 7 shows a schematic structural diagram of a user equipment provided in an exemplary embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
Battery life of a user equipment is an important measure for the user equipment. To this end, the 5G system introduces some technical features for instructing the user equipment to switch the behavior so that the user equipment can enter a power saving state under appropriate conditions to save power of the user equipment, and the switching of the state involves various configuration changes, including switching of Bandwidth unit (BWP) (e.g. switching to smaller BWP), switching of physical downlink control channel detection period (e.g. switching to larger period), skipping Part of the physical downlink control channel monitoring (PDCCH monitoring) and cross-slot scheduling (cross-slot scheduling) with minimum scheduling interval greater than 0, and the like, and the signaling triggering these configuration changes can be carried by downlink control information.
A suitable solution has not been provided in the related art for how to optimize the indication of the listening behavior of the physical downlink control channel.
Therefore, the embodiment of the disclosure provides an indication method, an indication device and a storage medium for channel monitoring, and the embodiment of the disclosure receives downlink control information through user equipment, wherein the downlink control information is used for indicating whether to stop monitoring a physical downlink control channel and/or the duration of stopping monitoring the physical downlink control channel; the information indicating the switching of the monitoring behavior of the physical downlink control channel is combined with the current downlink control information to complete the switching indication of the monitoring state of the physical downlink control channel, so that the user equipment monitors the physical downlink control channel or stops monitoring according to the indication of the downlink control information, each physical downlink control channel is not required to be monitored, the power consumption of the user equipment is reduced, and the monitoring behavior of the physical downlink control channel is optimized.
Referring to fig. 1, a schematic structural diagram of a mobile communication system according to an exemplary embodiment of the present disclosure is shown. The mobile communication system may be an LTE system, or may also be a 5G system, where the 5G system is also called an NR system, or may also be a next-generation mobile communication technology system of 5G, and this embodiment does not limit this.
Optionally, the mobile communication system is suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle to internet (V2X) architecture, and the like.
In the embodiments of the present disclosure, the mobile communication system is only exemplified as an NB-IoT system. The mobile communication system includes: a network side device 120 and a user device 140.
The Network side device 120 may be a Base Station (BS), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (NodeB), the device providing the base station function in the 4G network includes an evolved node B (evolved NodeB, eNB), the device providing the base station function in the Wireless Local Area Network (WLAN) is an Access Point (AP), the device providing the base station function in the 5G system is a gNB, and a node B (ng-eNB) that continues to evolve, the network side device 120 in the embodiment of the present disclosure further includes a device providing the base station function in a new communication system in the future, and the present disclosure does not limit a specific implementation manner of the network side device 120. The access network devices may also include Home base stations (Home enbs, henbs), relays (relays), Pico base stations Pico, etc.
The base station controller is a device for managing a base station, such as a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, and a device for controlling and managing a base station in a future new communication system.
The network side device 120 includes a base station of the radio access network, a base station controller of the radio access network, and a device on the core network side.
The core Network may be an Evolved Packet Core (EPC), a 5G core Network (5GCore Network), or a new core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements Access and mobility Management functions (AMF) of functions such as mobility Management, User Plane Functions (UPF) providing functions such as packet routing forwarding and Quality of Service (QoS) Management, Session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, Gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.
The network side device 120 and the user equipment 140 establish a wireless connection over a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is NR; or, the wireless air interface may also be a wireless air interface based on a 5G next generation mobile communication network technology standard; alternatively, the wireless air interface may be a wireless air interface based on the 4G standard (LTE system). The network side device 120 may receive the uplink data sent by the user equipment 140 through the wireless connection.
The user equipment 140 may refer to a device in data communication with the network-side device 120. The user equipment 140 may communicate with one or more core networks via a radio access network. The user equipment 140 may be various forms of user equipment, access terminal equipment, subscriber unit, subscriber station, Mobile Station (MS), remote station, remote terminal equipment, mobile device, terminal equipment (terminal equipment), wireless communication device, user agent, or user device. The user device 140 may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc. Fig. 1 is only illustrated by using the user equipment 140 shown as a mobile phone, and the present embodiment does not limit the type of the user equipment 140. The user equipment 140 may receive the downlink data sent by the network-side device 120 through a wireless connection with the network-side device 120.
It should be noted that, when the mobile communication system shown in fig. 1 adopts a 5G system or a 5G next generation mobile communication technology system, the above network elements may have different names in the 5G system or the 5G next generation mobile communication technology system, but have the same or similar functions, and the embodiment of the present disclosure is not limited thereto.
It should be noted that, in the mobile communication system shown in fig. 1, a plurality of network-side devices 120 and/or a plurality of user devices 140 may be included, and one network-side device 120 and one user device 140 are illustrated in fig. 1, but the embodiment of the present disclosure does not limit this.
In the following, several exemplary embodiments are adopted to describe the indication method for channel sensing provided by the embodiments of the present disclosure.
Referring to fig. 2, a flowchart of an indication method for channel sensing according to an exemplary embodiment of the present disclosure is shown, which is illustrated in the embodiment that the method is used in the ue shown in fig. 1. The method comprises the following steps.
The user equipment receives downlink control information sent by the network side equipment, wherein the downlink control information is used for indicating the switching of the monitoring behavior of the physical downlink control channel, namely whether to stop monitoring the physical downlink control channel and/or stop monitoring the duration of the physical downlink control channel.
In the method based on the downlink control information, the switching of the monitoring behavior of the physical downlink control channel can be indicated by adding a plurality of bits to the downlink control information, but the bit size of the downlink control information directly affects the coverage performance of a cell, and for an operator who is currently performing or has completed part of 5G base station deployment, it is not desirable to directly add a plurality of bit indication domains to the downlink control information, so how to design the downlink control information on the basis of not adding bits or adding bits as little as possible to indicate the switching of the monitoring behavior of the physical downlink control channel is a problem to be solved. In view of the above problems, in the embodiment of the present disclosure, information indicating switching of a physical downlink control channel monitoring behavior is merged with an existing information field in current downlink control information, and the switching indication of the physical downlink control channel monitoring behavior is completed without increasing the number of bits of the downlink control information or only increasing 1 bit, so that the user equipment enters a corresponding appropriate energy saving state according to a service state.
When the received downlink control information is used for indicating to stop monitoring the physical downlink control channel, the user equipment stops monitoring the physical downlink control channel, that is, the physical downlink control channel monitoring behavior is switched to skip monitoring of part of the physical downlink control channel.
The user stops monitoring the physical downlink control channel, including: the user equipment does not receive and blindly detect the physical downlink control channel in a specified time period.
In an illustrative example, taking a period of a physical downlink control channel as 1 timeslot as an example, if the ue receives downlink control information in timeslot m, and the downlink control information is used to indicate that monitoring of the physical downlink control channel is stopped and a duration of stopping monitoring of the physical downlink control channel is 3 timeslots, the ue will not receive and perform blind detection on the physical downlink control channel in timeslots m +1 to m +3, and restart receiving the physical downlink control channel when timeslot m +4 is reached. By the mode, the network side equipment can enable the user equipment to enter a dormant state without receiving the physical downlink control channel when no data is scheduled in the specified time period, so that the electric energy of the user equipment is saved.
To sum up, the embodiment of the present disclosure receives downlink control information through a user equipment, where the downlink control information is used to indicate whether to stop monitoring a physical downlink control channel and/or stop monitoring a duration of the physical downlink control channel; the information indicating the switching of the monitoring behavior of the physical downlink control channel is combined with the current downlink control information to complete the switching indication of the monitoring state of the physical downlink control channel, so that the user equipment monitors the physical downlink control channel or stops monitoring according to the indication of the downlink control information, each physical downlink control channel is not required to be monitored, the power consumption of the user equipment is reduced, and the monitoring behavior of the physical downlink control channel is optimized.
Optionally, the downlink control information carries a first scheduling delay field, or a time domain resource allocation field of the downlink control information carries a second scheduling delay field; the first scheduling delay domain is used for indicating whether to stop monitoring the physical downlink control channel, the second scheduling delay domain is used for indicating that the duration of stopping monitoring the physical downlink control channel is n time units, and n is a positive integer. Several possible ways of indicating channel listening are described below using exemplary embodiments.
Referring to fig. 3, a flowchart of an indication method for channel sensing according to another exemplary embodiment of the present disclosure is shown, which is illustrated in the embodiment that the method is used in the user equipment shown in fig. 1. The method comprises the following steps.
And the user equipment receives downlink control information which is sent by the network side equipment and carries the first scheduling delay domain. And the scheduling delay indicated by the first scheduling delay domain is used for indicating whether to stop monitoring the physical downlink control channel.
The first scheduling delay domain is a time interval between a Physical downlink control Channel (pdcch) and a Physical Downlink Shared Channel (PDSCH), and is used for indicating a time domain position of the PDSCH scheduled by the downlink control information. For example, when the scheduling delay indicated by the first scheduling delay field is 1, and the physical downlink control channel is in the time slot m, the corresponding physical downlink shared channel is in the time slot m + 1.
The user equipment acquires a limit value of the minimum scheduling delay, acquires a first scheduling delay domain from the received downlink control information, judges whether the scheduling delay indicated by the first scheduling delay domain is smaller than the limit value of the minimum scheduling delay, and executes the step 302 if the scheduling delay indicated by the first scheduling delay domain is smaller than the limit value of the minimum scheduling delay; and if the scheduling delay indicated by the first scheduling delay domain is greater than or equal to the limit value of the minimum scheduling delay, continuing to monitor the physical downlink control channel.
The minimum scheduling delay is a minimum K0 value which can be indicated by a time domain resource allocation domain, and the minimum K0 value is used for indicating a direct time slot distance between a physical downlink control channel and a physical downlink shared channel. For example, the physical downlink control channel is in the time slot n, and the physical downlink shared channel is in the time slot n + K0.
The method for obtaining the limiting value of the minimum scheduling delay by the user equipment comprises the following steps: and the user equipment receives indication information sent by the network side equipment, wherein the indication information carries a limit value of the minimum scheduling delay.
Optionally, the limit value of the minimum scheduling delay includes one value or two values. This embodiment is not limited thereto.
When the scheduling delay indicated by the first scheduling delay Domain is smaller than the limit value of the minimum scheduling delay, the user equipment considers that an error condition occurs, a code point corresponding to a Time Domain Resource Allocation (TDRA) Domain is an error code point, and the user equipment starts a monitoring mechanism for skipping part of the physical downlink control channel, that is, stops monitoring the physical downlink control channel.
Optionally, the ue stops monitoring the physical downlink control channel in n time units after receiving the downlink control information, where n is a value preconfigured by a higher layer or an integer determined based on the downlink control information.
Optionally, n is one or more values configured in a higher layer. For example, the higher layer preconfiguration n has a value of 5. That is, when the scheduling delay indicated by the first scheduling delay field is smaller than the limit value of the minimum scheduling delay, the ue stops monitoring the physical downlink control channel within 5 time units after receiving the downlink control information. The present embodiment does not limit the specific value of n.
The time length for stopping monitoring the physical downlink control channel is n time units, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel or a monitoring opportunity of the physical downlink control channel. This embodiment is not limited thereto.
In one possible implementation manner, n is a unit number corresponding to the scheduling delay indicated by the first scheduling delay field.
Different error code points are configured by the high layer to indicate different durations for stopping monitoring the physical downlink control channel. The user equipment receives a pre-configured first corresponding relation and stores the first corresponding relation, wherein the first corresponding relation comprises a corresponding relation between scheduling time delay indicated by a first scheduling time delay domain and the unit number n.
In one illustrative example, the higher level preconfigured first correspondence is shown in Table one. Minimum scheduling delay K0minIs 3, n is 10 when the scheduling delay K0 indicated by the first scheduling delay field is 0, n is 20 when the scheduling delay K0 indicated by the first scheduling delay field is 1, and the time unit is millisecond. Is indicated at the user equipment K0minAfter 3, if the K0 carried in the received downlink control information is K00, the user equipment stops monitoring the physical downlink control channel within 10ms after receiving the downlink control information; if K0 carried in the received downlink control information is 1, the ue stops monitoring the physical downlink control channel within 20ms after receiving the downlink control information.
In another possible implementation manner, n is the unit number indicated by the designated field of the downlink control information.
Since the scheduling delay indicated by the first scheduling delay field is smaller than the limit value of the minimum scheduling delay, which indicates that this is an error code point, and the downlink control information cannot be used for data scheduling, other fields in the downlink control information may be used to indicate the duration of stopping monitoring the physical downlink control channel, that is, to indicate the unit number n of stopping monitoring the physical downlink control channel.
The designated field is a bit field in the downlink control information, where the position and length of the field are not changed, for example, the designated field includes a bit field of frequency domain resources in the downlink control information or the remaining bit field.
Optionally, after the ue stops monitoring the pdcch in n time units, the ue restarts monitoring the pdcch.
To sum up, the embodiment of the present disclosure further receives the downlink control information carrying the first scheduling delay field, and stops monitoring the physical downlink control channel when the scheduling delay indicated by the first scheduling delay field is smaller than the limit value of the minimum scheduling delay; the introduced error code point of cross-time slot scheduling is used for indicating whether to stop monitoring the physical downlink control channel, an extra domain is not required to be added, the bit overhead of the downlink control information is reduced, and the monitoring behavior of the physical downlink control channel is further optimized.
Referring to fig. 4, a flowchart of an indication method for channel sensing according to another exemplary embodiment of the present disclosure is shown, which is illustrated in the embodiment that the method is used in the user equipment shown in fig. 1. The method comprises the following steps.
The user equipment receives downlink control information, and a time domain resource allocation domain of the downlink control information is used for indicating the time length for stopping monitoring the physical downlink control channel.
Optionally, the time domain resource allocation field of the downlink control information carries a second scheduling delay, where the second scheduling delay is used to indicate a time unit n for stopping monitoring the physical downlink control channel.
The second scheduling delay is a time interval between the physical downlink control channel and the PDSCH, and the second scheduling delay is used for indicating a time domain position of the PDSCH scheduled by the downlink control information. For example, when the second scheduling delay is 1, the physical downlink control channel is in the time slot m, and the corresponding PDSCH is in the time slot m + 1.
In this embodiment, the triggering condition for stopping listening to the physical downlink control channel includes, but is not limited to, the following two possible implementation manners.
In a possible implementation manner, monitoring of the physical downlink control channel is stopped when indication information is received, where the indication information is used to indicate that the minimum scheduling delay is limited.
The user equipment receives indication information which is sent by the network side equipment and used for indicating a limiting value of the minimum scheduling delay, namely, a monitoring mechanism of a part of physical downlink control channels is started to be skipped, namely, the monitoring of the physical downlink control channels is stopped.
The limit value of the minimum scheduling delay is the value of the minimum scheduling delay. The minimum scheduling delay limit value may comprise one value or two values. This embodiment is not limited thereto.
In another possible implementation manner, when the downlink control information carries a bit indicating to stop monitoring the physical downlink control channel, the monitoring of the physical downlink control channel is stopped.
And when the downlink control information carries a bit for indicating to stop monitoring the physical downlink control channel, the user equipment stops monitoring the physical downlink control channel.
And the user equipment acquires a second scheduling time delay from the downlink control information, and determines the time length for stopping monitoring the physical downlink control channel to be n time units according to the second scheduling time delay. The user equipment stops monitoring the physical downlink control channel according to the triggering condition, namely stops monitoring the physical downlink control channel in n time units after receiving the downlink control information.
The duration of stopping monitoring the physical downlink control channel is n time units, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel, or a monitoring time of the physical downlink control channel. This embodiment is not limited thereto.
The user equipment determines the number n of units for stopping monitoring the physical downlink control channel according to the second scheduling delay, which includes but is not limited to the following several possible implementation manners.
In one possible implementation, n is a product of the second scheduling delay and a preset multiple value. That is, the user equipment determines that the product of the second scheduling delay and the preset multiple value is the unit number n.
Wherein the preset multiple value is configured by a high layer. The unit number n for stopping monitoring the physical downlink control channel is in positive correlation with the second scheduling delay. The unit number n and the second scheduling delay are in a multiple relation, namely the unit number n is an integral multiple of the second scheduling delay, and the integral multiple is a preset multiple value. This embodiment is not limited thereto.
In an illustrative example, the relationship between the number of units n and the multiple of the second scheduling delay K0 is shown in table two. The preset multiple value X is 4, and the time unit of the unit number n is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel, or a monitoring time of the physical downlink control channel. When K0 is 0, n is 0, when K0 is 1, n is 4, when K0 is 2, n is 8, and when K0 is 4, n is 16.
Watch two
| Serial number | K0 | n(X＝4) |
| 0 | 0 | 0 |
| 1 | 1 | 4 |
| 2 | 2 | 8 |
| 3 | 4 | 16 |
In another possible implementation manner, n is a preconfigured number of units corresponding to the second scheduling delay. That is, the user equipment determines the unit number n of the time unit for stopping monitoring the physical downlink control channel as the unit number corresponding to the second scheduling delay according to the pre-configured second corresponding relationship. And the second corresponding relation is a corresponding relation between a second preset scheduling time delay and the unit number.
Optionally, the number of units corresponding to at least two second scheduling delays in the second corresponding relationship is the same.
In an illustrative example, the correspondence between the plurality of second scheduling delays K0 and the plurality of unit numbers n is shown in table three. The time unit of the unit number n is a time slot, a subframe, a second, a millisecond, a monitoring period of a physical downlink control channel or a monitoring time of the physical downlink control channel. When K0 is 0 or 1 or 2 or 4, the corresponding n is X, and when K0 is 6 or 8 or 12 or 16, the corresponding n is Y.
Watch III
In another illustrative example, the correspondence between the plurality of second scheduling delays K0 and the plurality of unit numbers n is shown in table four. The time unit of the unit number n is a time slot, a subframe, a second, a millisecond, a monitoring period of a physical downlink control channel or a monitoring time of the physical downlink control channel. When K0 is 0 or 2 or 6 or 12, the corresponding n is X, and when K0 is 1 or 4 or 8 or 16, the corresponding n is Y.
Watch four
| Serial number | K0 | n |
| 0 | 0 | |
| 1 | 1 | |
| 2 | 2 | |
| 3 | 4 | |
| 4 | 6 | |
| 5 | 8 | Y |
| 6 | 12 | X |
| 7 | 16 | Y |
Optionally, the second corresponding relationship includes a one-to-one corresponding relationship between a plurality of second scheduling delays and a plurality of unit numbers.
In an illustrative example, the one-to-one correspondence between the plurality of second scheduling delays K0 and the plurality of unit numbers n is shown in table five. The time unit of the unit number n is a time slot, a subframe, a second, a millisecond, a monitoring period of a physical downlink control channel or a monitoring time of the physical downlink control channel. When K0 is 0, corresponding n is A, when K0 is 1, corresponding n is B, when K0 is 2, corresponding n is 4, when K0 is 4, corresponding n is D; when K0 is 6, corresponding n is E, when K0 is 8, corresponding n is F, when K0 is 12, corresponding n is G, and when K0 is 16, corresponding n is H.
Watch five
| Serial number | K0 | n |
| 0 | 0 | A |
| 1 | 1 | |
| 2 | 2 | 4 |
| 3 | 4 | |
| 4 | 6 | |
| 5 | 8 | F |
| 6 | 12 | G |
| 7 | 16 | H |
And the user equipment stops monitoring the physical downlink control channel in n time units after receiving the downlink control information. After stopping monitoring the physical downlink control channel in n time units, the user equipment restarts monitoring the physical downlink control channel.
In an illustrative example, based on the correspondence shown in table five above, taking a time unit of n as a time slot as an example, as shown in fig. 5, the ue receives downlink control information in a time slot m, where a second scheduling delay K0 carried in a time domain resource allocation field of the downlink control information is 2, and the second scheduling delay K0 is used to indicate that n is 4, that is, the duration of stopping monitoring the PDCCH is 4 time slots. And the user equipment receives the PDSCH on the time slot m +2 according to the downlink control information, stops monitoring the PDCCH in the time slots m +1 to m +4, and restarts monitoring the PDCCH when the time slot m +5 is reached.
The embodiment of the disclosure further uses the time domain resource allocation domain of the downlink control information to carry a second scheduling delay, where the second scheduling delay is used to indicate a time unit n for stopping monitoring the physical downlink control channel, and there is no need to add or only add an extra domain of 1 bit, so that the bit overhead of the downlink control information is reduced, and the monitoring behavior of the physical downlink control channel is further optimized.
The following are embodiments of the apparatus of the embodiments of the present disclosure, and for portions of the embodiments of the apparatus not described in detail, reference may be made to technical details disclosed in the above-mentioned method embodiments.
Please refer to fig. 6, which illustrates a schematic structural diagram of an indication apparatus for channel sensing according to an exemplary embodiment of the present disclosure. The indication means of channel listening may be implemented by software, hardware or a combination of both as all or part of the user equipment. The indicating device for channel monitoring comprises: and a receiving module 610.
The receiving module 610 is configured to receive downlink control information, where the downlink control information is used to indicate whether to stop monitoring the physical downlink control channel and/or stop monitoring the duration of the physical downlink control channel.
In a possible implementation manner, the downlink control information carries a first scheduling delay field, where the first scheduling delay field is used to indicate whether to stop monitoring the physical downlink control channel.
In another possible implementation manner, the apparatus further includes: a first processing module; and the first processing module is used for stopping monitoring the physical downlink control channel when the scheduling delay indicated by the first scheduling delay domain is smaller than the limit value of the minimum scheduling delay.
In another possible implementation manner, the processing module is further configured to stop monitoring the physical downlink control channel in n time units after receiving the downlink control information, where n is a value preconfigured by a higher layer or an integer determined based on the downlink control information, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel, or a monitoring time of the physical downlink control channel.
In another possible implementation manner, n is a unit number corresponding to the scheduling delay indicated by the first scheduling delay field, which is preconfigured; or n is the unit number indicated by the designated field of the downlink control information.
In another possible implementation manner, the time domain resource allocation field of the downlink control information is used to indicate a duration for stopping monitoring the physical downlink control channel.
In another possible implementation manner, the apparatus further includes: a second processing module; and the second processing module is used for stopping monitoring the physical downlink control channel when the indication information is received or the downlink control information carries a bit for indicating to stop monitoring the physical downlink control channel, wherein the indication information is used for indicating to limit the minimum scheduling delay.
In another possible implementation manner, a time domain resource allocation domain of the downlink control information carries a second scheduling delay, where the second scheduling delay is used to indicate that a duration of stopping monitoring the physical downlink control channel is n time units, and the apparatus further includes: a third processing module; and the third processing module is used for stopping monitoring the physical downlink control channel in n time units after the downlink control information is received, wherein n is an integer, and the time unit is a time slot or a subframe or a second or a millisecond or a monitoring period of the physical downlink control channel or a monitoring opportunity of the physical downlink control channel.
In another possible implementation manner, n is a product of the second scheduling delay and a preset multiple value; or n is a unit number corresponding to the second scheduling delay and is pre-configured.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the above functional modules is illustrated, and in practical applications, the above functions may be distributed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Referring to fig. 7, a schematic structural diagram of a user equipment according to an exemplary embodiment of the present disclosure is shown, where the user equipment may be the user equipment 140 in the mobile communication system shown in fig. 1. In this embodiment, a user equipment is taken as an example of a UE in an LTE system or a 5G system for explanation, where the user equipment includes: a processor 71, a receiver 72, a transmitter 73, a memory 74 and a bus 75. The memory 74 is connected to the processor 71 by a bus 75.
The processor 71 includes one or more processing cores, and the processor 71 executes various functional applications and information processing by running software programs and modules.
The receiver 72 and the transmitter 73 may be implemented as one communication component, which may be a communication chip, and the communication chip may include a receiving module, a transmitting module, a modulation and demodulation module, etc. for modulating and/or demodulating information and receiving or transmitting the information through a wireless signal.
The memory 74 may be used to store instructions executable by the processor 71.
The memory 74 may store at least one application module 76 that functions as described. The application modules 76 may include: the receiving module 761. The processor 71 is configured to execute the receiving module 761 to implement the functions related to the receiving step performed by the user equipment in the above-described various method embodiments.
The application modules 76 may also include: and a processing module. The processor 71 is further configured to execute the processing module to implement the functions of the related processing steps performed by the user equipment in the above-described respective method embodiments.
Further, the memory 74 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
An embodiment of the present disclosure further provides a user equipment, where the user equipment includes: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the steps executed by the user equipment in the above method embodiments are realized.
The disclosed embodiments also provide a non-transitory computer-readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the methods in the various method embodiments described above.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, 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/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (12)
1. An indication method of channel listening, used in a user equipment, the method comprising:
receiving downlink control information, wherein the downlink control information is used for indicating whether to stop monitoring a physical downlink control channel and/or stop monitoring the duration of the physical downlink control channel.
2. The method of claim 1, wherein the downlink control information carries a first scheduling delay field, and the first scheduling delay field is used to indicate whether to stop monitoring the physical downlink control channel.
3. The method of claim 2, wherein after receiving the downlink control information, the method further comprises:
and when the scheduling delay indicated by the first scheduling delay domain is smaller than the limit value of the minimum scheduling delay, stopping monitoring the physical downlink control channel.
4. The method of claim 3, wherein the stopping listening to the physical downlink control channel comprises:
stopping monitoring the physical downlink control channel in n time units after the downlink control information is received, wherein n is a value pre-configured by a high layer or an integer determined based on the downlink control information, and the time unit is a time slot, a subframe, a second, a millisecond, a monitoring period of the physical downlink control channel or a monitoring opportunity of the physical downlink control channel.
5. The method of claim 4,
the n is a unit number corresponding to the scheduling delay indicated by the first scheduling delay domain and is pre-configured; or,
and the n is the unit number indicated by the designated field of the downlink control information.
6. The method of claim 1, wherein a time domain resource allocation field of the downlink control information is used to indicate a duration for stopping listening to the physical downlink control channel.
7. The method of claim 5, further comprising:
and stopping monitoring the physical downlink control channel when receiving indication information or the downlink control information carries a bit for indicating stopping monitoring the physical downlink control channel, wherein the indication information is used for indicating limiting the minimum scheduling delay.
8. The method according to claim 7, wherein a second scheduling delay is carried in a time domain resource allocation field of the downlink control information, and the second scheduling delay is used to indicate that a duration of stopping monitoring the physical downlink control channel is n time units, and the method further comprises:
stopping monitoring the physical downlink control channel within the n time units after the downlink control information is received, wherein n is an integer, and the time unit is a time slot or a subframe or a second or a millisecond or a monitoring period of the physical downlink control channel or a monitoring opportunity of the physical downlink control channel.
9. The method of claim 8,
the n is the product of the second scheduling delay and a preset multiple value; or,
and n is a unit number corresponding to the second scheduling time delay in a pre-configuration mode.
10. An apparatus for indicating channel listening, the apparatus being used in a user equipment, the apparatus comprising:
a receiving module, configured to receive downlink control information, where the downlink control information is used to indicate whether to stop monitoring a physical downlink control channel and/or stop monitoring a duration of the physical downlink control channel.
11. A user equipment, the user equipment comprising: a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to:
receiving downlink control information, wherein the downlink control information is used for indicating whether to stop monitoring a physical downlink control channel and/or stop monitoring the duration of the physical downlink control channel.
12. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any one of claims 1 to 9.
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| PCT/CN2021/074463 WO2021148040A1 (en) | 2020-01-21 | 2021-01-29 | Channel monitoring indication method and apparatus, and storage medium |
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| WO2022023138A1 (en) * | 2020-07-28 | 2022-02-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Reducing power consumption for pdcch monitoring |
| CN114501489A (en) * | 2020-11-12 | 2022-05-13 | 维沃移动通信有限公司 | Energy-saving indication method, device, equipment and readable storage medium |
| WO2022135059A1 (en) * | 2020-12-25 | 2022-06-30 | 展讯通信（上海）有限公司 | Method and apparatus for indicating physical downlink shared channel monitoring, and medium |
| WO2024060913A1 (en) * | 2022-09-23 | 2024-03-28 | 荣耀终端有限公司 | Discontinuous reception method and apparatus |
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Also Published As
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| WO2021148040A1 (en) | 2021-07-29 |
| CN111278096B (en) | 2023-07-04 |
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