CN111800801A - Monitoring method and device of PDCCH (physical Downlink control channel) - Google Patents

Monitoring method and device of PDCCH (physical Downlink control channel) Download PDF

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Publication number
CN111800801A
CN111800801A CN201910759874.8A CN201910759874A CN111800801A CN 111800801 A CN111800801 A CN 111800801A CN 201910759874 A CN201910759874 A CN 201910759874A CN 111800801 A CN111800801 A CN 111800801A
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Prior art keywords
pdcch
coreset
monitoring
parameter
receiving
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CN201910759874.8A
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CN111800801B (en
Inventor
吴凯
潘学明
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN201910759874.8A priority Critical patent/CN111800801B/en
Priority to PCT/CN2020/107875 priority patent/WO2021031888A1/en
Publication of CN111800801A publication Critical patent/CN111800801A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels

Abstract

The embodiment of the invention discloses a monitoring method and equipment of a PDCCH (physical downlink control channel), which are used for determining a receiving parameter of the PDCCH so as to monitor the PDCCH according to the determined receiving parameter. The method can be executed by a terminal device and comprises the following steps: receiving a first PDCCH; the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH; determining a second receiving parameter of the second PDCCH according to the first receiving parameter of the first PDCCH; and monitoring the second PDCCH according to the second receiving parameter. The embodiment of the invention provides a scheme for determining the receiving parameters of the PDCCH, and the terminal equipment can monitor the PDCCH according to the determined receiving parameters, thereby improving the communication performance.

Description

Monitoring method and device of PDCCH (physical Downlink control channel)
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method and equipment for monitoring a Physical Downlink Control Channel (PDCCH).
Background
In a New Radio (NR) system, a terminal device usually configures a plurality of receiving parameters, for example, configures a plurality of Control Resource sets (CORESET). In case that the terminal device configures a plurality of reception parameters, it is clear which reception parameters the terminal device should use to monitor the PDCCH. Therefore, how to provide a PDCCH monitoring method becomes a technical problem to be solved at present.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method and a device for monitoring a PDCCH, which are used to determine a receiving parameter of the PDCCH, so as to monitor the PDCCH according to the determined receiving parameter.
In a first aspect, a method for monitoring a PDCCH is provided, where the method is performed by a terminal device, and the method includes:
receiving a first PDCCH; the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH;
determining a second receiving parameter of the second PDCCH according to the first receiving parameter of the first PDCCH;
and monitoring the second PDCCH according to the second receiving parameter.
In a second aspect, a terminal device is provided, which includes:
a receiving module, configured to receive a first PDCCH; the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH;
a receiving parameter determining module, configured to determine a second receiving parameter of the second PDCCH according to a first receiving parameter of the first PDCCH;
the receiving module is further configured to monitor the second PDCCH according to the second receiving parameter.
In a third aspect, a terminal device is provided, which includes a processor, a memory and a computer program stored on the memory and operable on the processor, and when executed by the processor, the computer program implements the steps of the method for monitoring the PDCCH according to the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the method for monitoring PDCCH according to the first aspect.
In at least one of the above embodiments of the present invention, the terminal device determines the receiving parameter of the second PDCCH according to the receiving parameter of the first PDCCH, and monitors the second PDCCH according to the determined receiving parameter, where the first PDCCH is used to instruct the terminal device to monitor the second PDCCH. The embodiment of the invention provides a scheme for determining the receiving parameters of the PDCCH, and the terminal equipment can monitor the PDCCH according to the determined receiving parameters, thereby improving the communication performance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flowchart of a monitoring method of a PDCCH according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of CORESET according to one embodiment of the invention;
FIG. 3 is a schematic diagram of a listening opportunity according to one embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. "and/or" in various embodiments of the present specification means at least one of front and rear.
It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Long Term Evolution (LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS) or Worldwide Interoperability for Microwave Access (WiMAX) communication System, a 5G NR System, or a subsequent Evolution communication System.
In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), etc., and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.
As shown in fig. 1, an embodiment of the present invention provides a PDCCH monitoring method 100, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and includes the following steps:
s102: and receiving a first PDCCH, wherein the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH.
Optionally, in an implementation, the embodiment may be applied in a Discontinuous Reception (DRX) scenario, where the first PDCCH carries a Wake Up Signal (WUS). In this embodiment, the terminal device may detect the wake-up signal prior to DRX: if the terminal equipment detects the wake-up signal, the terminal equipment receives the first PDCCH, and the terminal equipment subsequently monitors a second PDCCH in the activation period of the DRX; and if the terminal equipment does not detect the wake-up signal, the terminal equipment does not monitor the second PDCCH in the active period of the DRX, namely skipping the DRX to continue sleeping. Or using another implementation manner, the first PDCCH carries a sleep indication signal (Go to sleep, GTS), and if the terminal device does not detect the sleep indication signal, that is, does not receive the first PDCCH, the terminal device subsequently monitors a second PDCCH in an active period of DRX; and if the terminal equipment detects the sleep indication signal, the terminal equipment does not monitor the second PDCCH in the active period of the DRX, namely skips the DRX and continues sleeping.
Optionally, in another embodiment, this embodiment may be applied in a scenario of an unlicensed frequency band, where the first PDCCH may be used to indicate Channel occupancy information on the unlicensed frequency band, where the Channel occupancy information includes at least one of whether a Channel is occupied and Channel Occupancy Time (COT) information. Specifically, for example, the channel occupancy information includes indication information that the channel is unoccupied; for another example, the channel occupancy information includes indication information that the channel is occupied and COT information; as another example, the channel occupancy information includes only COT information.
The COT information may include a starting time of channel occupancy; the end time of channel occupation; the occupation time of the channel; listen Before Talk (LBT) level and LBT priority.
S104: and determining a second receiving parameter of a second PDCCH according to the first receiving parameter of the first PDCCH.
Optionally, the first receiving parameter comprises at least one of:
1) receive a number (ID, or identifier) of a first Control Resource Set (CORESET) of the first PDCCH.
In this embodiment, the terminal device may monitor the first PDCCH on one or more CORESET, and encapsulate information such as a frequency band occupied by the PDCCH in the frequency domain and the number of OFDM symbols occupied in the time domain in the CORESET.
The first core set therein may be the one that received the first PDCCH, and the first core set may be one or more.
2) A first Transmission Configuration Indication (TCI) state (state) of a first core set of the first PDCCH is received.
Each core set of the end device (including the first core set described above) may configure one or more TCI states. If the first CORESET configures a plurality of TCI states, the network device may activate one TCI state through the MAC-CE, that is, one CORESET corresponds to one activated TCI state at the same time.
In general, TCI status may be used to indicate that different reference signals, physical channels satisfy quasi co-location (QCL) relationships, including QCL types as follows:
QCL-type A: { doppler shift, doppler spread, average delay, delay spread };
QCL-type B: { doppler shift, doppler spread };
QCL-type C: { doppler shift, average delay };
QCL-type D: { space Rx parameters }, for assisting terminal device reception.
3) A first Quasi-Co-Location (QCL) parameter (assignment) used by a first PDCCH is received.
4) A search space (search space) used by the first PDCCH is received.
Usually, there is a mapping relationship between the CORESET and the search space, and the search space is encapsulated with information such as the starting OFDM symbol number of the PDCCH and the PDCCH monitoring period.
5) Receiving a monitoring occasion (monitoring occasion) of the first PDCCH.
Optionally, the second reception parameter comprises at least one of:
1) and monitoring a second CORESET of the second PDCCH.
2) And monitoring a second TCI state used by the second PDCCH.
3) And monitoring a second QCL parameter used by the second PDCCH.
Optionally, in other embodiments, the first receiving parameter may further include whether the first PDCCH is received; accordingly, the second reception parameter may include whether or not monitoring of the second PDCCH is required.
Specifically, for example, if the wake-up signal is received before DRX, that is, the first PDCCH is received, then monitoring of the second PDCCH is required in the active period of DRX subsequently; if the wake-up signal is not received before the DRX, namely the first PDCCH is not received, then the monitoring of the second PDCCH is not needed in the activation period of the DRX subsequently.
For another example, if the sleep indication signal is not received before DRX, that is, the first PDCCH is not received, then monitoring of the second PDCCH is required in the active period of DRX; if the sleep indication signal is received before the DRX, namely the first PDCCH is received, then the monitoring of the second PDCCH is not required in the active period of the DRX subsequently.
Optionally, if there are multiple first PDCCHs received in S102, the step may specifically determine a second receiving parameter of a second PDCCH according to a first receiving parameter of the first target PDCCH; wherein the first target PDCCH is a last detected PDCCH among the plurality of first PDCCHs.
S106: and monitoring a second PDCCH according to the second receiving parameter.
Optionally, in an embodiment, the receiving the first PDCCH in S102 includes: receiving the first PDCCH in the inactive period of DRX, and thus S106 may specifically be monitoring the second PDCCH according to the second receiving parameter in the active period of DRX.
Optionally, in another embodiment, the first PDCCH may be configured to indicate channel occupancy information on the unlicensed frequency band, where the channel occupancy information includes COT information, and thus, S106 may specifically monitor the second PDCCH according to the COT information and the second receiving parameter, for example, monitor the second PDCCH according to the second receiving parameter during a channel occupancy time indicated by the COT information.
According to the monitoring method of the PDCCH provided by the embodiment of the invention, the terminal equipment determines the receiving parameter of the second PDCCH according to the receiving parameter of the first PDCCH and monitors the second PDCCH according to the determined receiving parameter, wherein the first PDCCH is used for indicating the terminal equipment to monitor the second PDCCH. The embodiment of the invention provides a scheme for determining the receiving parameters of the PDCCH, and the terminal equipment can monitor the PDCCH according to the determined receiving parameters, thereby improving the communication performance.
As for determining the second receiving parameter of the second PDCCH according to the first receiving parameter of the first PDCCH mentioned in S104 of the foregoing embodiment, several specific embodiments will be described below.
Implementation mode one
The first receiving parameter includes a number of a first CORESET receiving the first PDCCH, and the second receiving parameter includes a second CORESET monitoring the second PDCCH.
In this embodiment, the terminal device may determine, according to the number of the first core set of the first PDCCH, a second core set for monitoring the second PDCCH; the number of the first CORESET is the same as the number of the second CORESET, that is, in this embodiment, the second PDCCH is monitored by using the CORESET with the same number as the CORESET where the first PDCCH is located.
Preferably, in this embodiment, there are a plurality of first CORESET that receive the first PDCCH, and thus there are a plurality of second CORESET that monitor the second PDCCH, and the numbers of the plurality of first CORESET are the same as the numbers of the plurality of second CORESET, respectively. Optionally, the plurality of first CORESET and the plurality of second CORESET are respectively the same.
The embodiment may monitor the second PDCCH on a plurality of second CORESET, respectively. And the second PDCCH is monitored on a plurality of second CORESETs, so that the receiving performance of the second PDCCH is improved.
When the embodiment is applied to a DRX scene, the first PDCCH carries an awakening signal, and it is considered that if the terminal equipment does not successfully receive the first PDCCH before a DRX period, the terminal equipment skips the DRX and continues to sleep, so that the receiving performance of the second PDCCH is influenced. In the embodiment, because the first PDCCH is received on the plurality of first CORESET, the receiving performance of the first PDCCH is ensured, and similarly, the receiving performance of the second PDCCH in the DRX active period is ensured.
Optionally, in this embodiment, one or more first CORESET that receives the first PDCCH are received, and the terminal device monitors the second PDCCH on all CORESETs configured by the network device.
For example, if the first CORESET that receives the first PDCCH is one, the terminal device monitors the second PDCCH on all CORESETs configured by the network device. In this embodiment, one first core set instructs the terminal device to monitor the second PDCCH on a plurality of second core sets in the active period, which can save the overhead of the first PDCCH.
Second embodiment
The first receiving parameter comprises a first TCI state of a first CORESET receiving the first PDCCH, and the second receiving parameter comprises a second CORESET monitoring the second PDCCH.
In this embodiment, the terminal device may determine, according to the first activated TCI state of the first core set of the first PDCCH, to monitor a second core set of the second PDCCH; in this embodiment, the terminal device may select the second activated TCI state that is the same as the first activated TCI state, and monitor the second PDCCH on the core set corresponding to the second activated TCI state.
Preferably, in this embodiment, there are a plurality of first CORESET receiving the first PDCCH, and thus there are a plurality of second CORESET monitoring the second PDCCH; the first active TCI states of the first plurality of CORESET are the same as the second active TCI states of the second plurality of CORESET, respectively.
Optionally, the first core set in this embodiment is an additional core set, the additional core set is used for receiving the wake-up signal, and the first core set and the second core set are different core sets.
The embodiment may monitor the second PDCCH on a plurality of second CORESET, respectively. And the second PDCCH is monitored on a plurality of second CORESETs, so that the receiving performance of the second PDCCH is improved.
Optionally, in this embodiment, the first core set received from the first PDCCH is one, and multiple target core sets use the same activated TCI state in the core sets monitoring the first PDCCH, in this case, the determined second core set may be one or multiple:
if the determined second CORESET is one, the terminal device can monitor the second PDCCH on a plurality of CORESETs including the second CORESET, and the activated TCI states of the plurality of CORESETs can be the same. In this embodiment, the terminal device may also adjust the active TCI states of the plurality of CORESET (except for the second CORESET) to be the same as the active TCI state of the second CORESET.
If a plurality of second CORESET are determined, the terminal device can monitor the second PDCCH on the plurality of second CORESET, and the activated TCI states of the plurality of second CORESET are the same.
Third embodiment
The first receiving parameter comprises a first QCL parameter used by the first PDCCH when received, and the second receiving parameter comprises a second CORESET for monitoring the second PDCCH.
In this embodiment, the terminal device may determine, according to the first QCL parameter of the first PDCCH, a second CORESET for monitoring the second PDCCH; and the QCL relation of the first QCL parameter is the same as the QCL relation indicated by the second TCI state of the second CORESET. That is, in this embodiment, the terminal device may select the second activated TCI state, where the QCL relationship indicated by the second activated TCI state is the same as the QCL relationship of the first QCL parameter; and then monitoring a second PDCCH on the CORESET corresponding to the second activated TCI state.
Reference to QCL relationships in various embodiments of the present description may refer to partial parameters being quasi co-located between two ports.
Preferably, in this embodiment, the number of the second CORESET is multiple, and monitoring the second PDCCH according to the second reception parameter includes:
monitoring a second PDCCH on the CORESET with the smallest number in a plurality of second CORESETs; or
Monitoring a second PDCCH on the CORESET with the largest number in a plurality of second CORESETs; or
And monitoring a second PDCCH on a plurality of second CORESETs.
Optionally, for the first QCL parameter used by the received first PDCCH, its QCL type is type D quasi co-located, i.e. QCL-type D as described above.
Optionally, for the QCL (relationship) of the second TCI status indication, its QCL type is type D quasi co-located, i.e. QCL-type D as described above.
Embodiment IV
The first receiving parameter comprises a search space used by the received first PDCCH, the mapping relation exists between the received first QCL parameter used by the first PDCCH and the search space, and the second receiving parameter comprises a second CORESET for monitoring the second PDCCH.
In this embodiment, the terminal device may determine, according to the search space of the first PDCCH, a second core to monitor a second PDCCH; and the search space of the first PDCCH has a mapping relation with the second CORESET. That is, in this embodiment, the terminal device may determine the first QCL parameter according to the search space of the first PDCCH, and then determine the second CORESET according to the first QCL parameter, where the specific determination process refers to the third mode.
Fifth embodiment
The first receiving parameter comprises a monitoring opportunity used by the first PDCCH, the mapping relation exists between the first QCL parameter used by the first PDCCH and the monitoring opportunity number, and the second receiving parameter comprises a second CORESET used for monitoring the second PDCCH.
In this embodiment, the terminal device may determine a second CORESET for monitoring a second PDCCH according to the monitoring time of the first PDCCH; and the monitoring opportunity number of the first PDCCH has a mapping relation with the second CORESET. That is, in this embodiment, the terminal device may determine the first QCL parameter according to the monitoring opportunity of the first PDCCH, and then determine the second CORESET according to the first QCL parameter, where the specific determination process refers to the third mode.
Sixth embodiment
In parallel to the fifth embodiment, optionally, after receiving the first PDCCH using any first receiving parameter, the terminal device monitors the second PDCCH on all the CORESETs configured by the network device, that is, the second receiving parameter includes the second CORESET for monitoring the second PDCCH, and the second CORESET is all the CORESETs configured by the network device.
Optionally, the terminal device may specifically adopt any one of the first to fifth manners, or adopt the sixth manner, and may be configured by the network device, and specifically, the network device may indicate through a higher layer signaling, the MAC-CE, or the downlink control information.
Optionally, all the above mentioned CORESET configured by the network device do not include the CORESET monitoring the first PDCCH.
Optionally, the aforementioned second PDCCH does not include a PDCCH scrambled with a Radio Network Temporary Identity (RNTI) of the first PDCCH.
Optionally, the aforementioned monitoring the second PDCCH on all the CORESET configured by the network device includes: monitoring a second PDCCH on all CORESETs configured by the network equipment according to the second TCI state or the second QCL parameter; the second TCI state is the same as the first TCI state, and the first TCI state is the TCI state used by the first PDCCH; the second QCL parameter is the same as the first QCL parameter, and the first QCL parameter is a QCL parameter used by the received first PDCCH.
In this embodiment, if one first CORESET is received for use by the first PDCCH, that is, the first TCI status is one, and the first QCL parameter is one, before the terminal device monitors the second PDCCH according to the second TCI status or the second QCL parameter on all CORESETs, the TCI statuses of all CORESETs may be adjusted to be the same as the first TCI status, or the QCL parameters of all CORESETs may be adjusted to be the same as the first QCL parameter.
In this sixth embodiment, one first core set that receives the first PDCCH may instruct the terminal device to monitor the second PDCCH on all core sets in the active period, so as to save the overhead of the first PDCCH.
In order to describe the PDCCH monitoring method in detail according to the above embodiments of the present invention, the following description will be made with reference to several specific embodiments.
Example of implementation
As shown in fig. 2, the abscissa in fig. 2 represents the time domain, the ordinate represents the frequency domain, and in the inactive period of DRX, the number of CORESET monitoring the first PDCCH is 3, see 1 shown in fig. 2stCORESET、2stCORESET and 3stCORESET。
The three CORESET and DRX active period terminal device monitor the same 3 CORESET of the second PDCCH.
In this embodiment, if the terminal device monitors the first PDCCH on any one of the CORESETs, the terminal device monitors the second PDCCH using the CORESET that monitors the first PDCCH in the DRX active period, and does not monitor on the other two CORESETs.
If the terminal device monitors the first PDCCH on multiple CORESETs (two or three), the terminal device also monitors the second PDCCH on the multiple CORESETs during the DRX active period.
Optionally, if the terminal device monitors the first PDCCH on any one or more of the CORESETs, the terminal device monitors the second PDCCH on all configured CORESETs during the DRX active period.
Example two
As shown in fig. 3, the abscissa in fig. 3 represents the time domain, the ordinate represents the frequency domain, during the inactive period of DRX, the number of CORESET monitoring the first PDCCH is 1, and the terminal device monitors the first PDCCH at a plurality of (3 shown in fig. 3) monitoring occasions in the search space corresponding to the CORESET, where the 3 monitoring occasions each use different QCL parameters.
The corresponding relationship between the monitoring opportunity and the QCL parameter may be predefined, for example, the time sequence of the monitoring opportunity corresponds to the TCI state/TCI state number corresponding to the CORESET number configured in the network.
In this embodiment, if the terminal device monitors the first PDCCH at any one of the monitoring occasions, it is assumed that 1 is usedstMonitor the first PDCCH during the monitoring time, 1stAnd if the monitoring time uses the first QCL parameter, the terminal equipment selects an activated TCI state which is the same as the first QCL parameter in the DRX activation period, monitors the second PDCCH on the CORESET corresponding to the activated TCI state, and does not monitor other CORESETs.
Preferably, if a plurality of CORESETs satisfy the above condition, that is, a plurality of CORESETs corresponding to the activated TCI state that is the same as the first QCL parameter are provided, the terminal device monitors the second PDCCH on the CORESET with the largest/smallest number in the DRX active period; or, monitoring a second PDCCH on each of the plurality of CORESET.
Preferably, if the terminal device monitors the first PDCCH at multiple monitoring occasions, where the multiple monitoring occasions use different QCL parameters, the terminal device selects multiple activated TCI states that are the same as the multiple QCL parameters, respectively, during the DRX active period, monitors the second PDCCH at multiple CORESETs corresponding to the multiple activated TCI states, and does not monitor other CORESETs.
Optionally, the 3 listening occasions in the second embodiment may be located in one search space; of course, the search spaces may be located in different search spaces.
Third embodiment, it is suitable for unlicensed frequency band
In this embodiment, the network device sends the first PDCCH, and may configure the terminal device to perform first PDCCH reception in multiple beam directions, where the first PDCCH is used to indicate that the network device obtains a channel and/or channel occupation time information, and the terminal device may monitor the second PDCCH within the channel occupation time.
If the terminal device receives the first PDCCH by using one or more CORESET, the terminal device monitors the second PDCCH only on the same CORESET as the received first PDCCH within the channel occupation time.
Optionally, if the terminal device receives the first PDCCH using one or more CORESET, the terminal device monitors a second PDCCH on a part of CORESET (hereinafter referred to as a target CORESET) during the channel occupation time.
The TCI status of the target CORESET indicates the same QCL relationship as the (QCL relationship of the) QCL parameters used by the CORESET that received the first PDCCH.
If a plurality of target CORESETs meet the requirements, monitoring a second PDCCH only on the CORESET with the largest number or the smallest number; or monitor the second PDCCH on all target CORESET.
Optionally, the terminal device monitors the second PDCCH on all the CORESET configured by the network device during the channel occupation time.
Optionally, the terminal device monitors the second PDCCH on all core esets configured by the network device according to the second TCI state or the second QCL parameter within the channel occupation time; wherein the second TCI state is the same as a first TCI state, the first TCI state being a TCI state of the first PDCCH; the second QCL parameter is the same as a first QCL parameter, which is a QCL parameter of the first PDCCH.
In this embodiment, the terminal device monitors the QCL parameter of the first PDCCH on the CORESET, which may be obtained according to the TCI state of the CORESET; the QCL parameters corresponding to the search space or the listening opportunity may also be directly. The correspondence between the search space or the listening opportunity and the QCL parameter may be predefined, for example, the time sequence of the number of the search space/the listening opportunity corresponds to the TCI state/the TCI state number corresponding to the CORESET number.
Optionally, the first PDCCH described in each of the foregoing embodiments of this specification may indicate at least one of the following information in addition to instructing the terminal device to monitor the second PDCCH:
1) the terminal equipment switches the bandwidth part BWP;
2) the terminal equipment activates or deactivates an object, wherein the object is a cell group or a carrier group;
3) the terminal equipment stops the PDCCH monitoring within a preset time period;
4) change of the number of (maximum) layers transmitted
5) The structure of the time slot;
6) the terminal equipment triggers the report of the channel state information;
7) the terminal equipment triggers the sending of the detection reference signal;
8) receiving a tracking reference signal by the terminal equipment;
9) the terminal equipment receives the channel state information reference signal;
10) the terminal equipment performs at least one of measurement of beam management, measurement of wireless link monitoring and measurement of wireless resource management;
11) at least one of the total time length of the occupied time of the channel, the residual time length and the channel access priority in the new air interface unlicensed frequency band;
12) the terminal equipment transmits the power control parameters of the uplink physical channel and/or physical signals;
13) the terminal device activates a different DRX configuration or search space configuration.
Optionally, if the terminal device detects multiple first PDCCHs and the information indicated by the DCI is different in different first PDCCHs, the terminal device determines the information according to the DCI indication in the first PDCCH detected last time, and transmits or receives a signal according to the information.
The monitoring method of the PDCCH according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 3. A terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 4.
Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 4, the terminal device 400 includes:
a receiving module 402, which may be configured to receive a first PDCCH; the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH;
a receiving parameter determining module 404, configured to determine a second receiving parameter of the second PDCCH according to a first receiving parameter of the first PDCCH;
the receiving module 402 may be further configured to monitor the second PDCCH according to the second receiving parameter.
In the embodiment of the invention, the terminal equipment determines the receiving parameter of the second PDCCH according to the receiving parameter of the first PDCCH and monitors the second PDCCH according to the determined receiving parameter, wherein the first PDCCH is used for indicating the terminal equipment to monitor the second PDCCH. The embodiment of the invention provides a scheme for determining the receiving parameters of the PDCCH, and the terminal equipment can monitor the PDCCH according to the determined receiving parameters, thereby improving the communication performance.
Optionally, as an embodiment, the first receiving parameter includes at least one of the following of the first PDCCH:
whether a first PDCCH is detected;
the number of a first control resource set CORESET;
a first transmission configuration of the first CORESET indicates a TCI status;
a first quasi co-located QCL parameter;
searching a space;
and monitoring the opportunity.
Optionally, as an embodiment, the second receiving parameter includes at least one of:
whether to monitor a second PDCCH is carried out;
monitoring a second CORESET of the second PDCCH;
a second TCI status of the second PDCCH;
a second QCL parameter of the second PDCCH.
Optionally, as an embodiment, the receiving module 402 may be configured to: receiving a first PDCCH in an inactive period of Discontinuous Reception (DRX);
a receiving module 402, configured to monitor the second PDCCH according to the second receiving parameter during an active period of DRX.
Optionally, as an embodiment, the first PDCCH is further configured to indicate channel occupancy information of an unlicensed frequency band;
wherein the channel occupation information includes at least one of whether a channel is occupied and channel occupation time COT information.
Optionally, as an embodiment, the channel occupancy information includes COT information, and the receiving module 402 may be configured to monitor the second PDCCH according to the COT information and the second receiving parameter.
Optionally, as an embodiment, the first receiving parameter includes a number of a first core set of the first PDCCH, the second receiving parameter includes a second core set of monitoring the second PDCCH, and the receiving parameter determining module 404 may be configured to determine the first receiving parameter and the second receiving parameter, respectively
Determining a second CORESET for monitoring the second PDCCH according to the number of the first CORESET of the first PDCCH;
wherein the number of the first CORESET is the same as the number of the second CORESET.
Optionally, as an embodiment, the first core set is plural, and the second core set is plural; the numbers of the first CORESETs are respectively the same as the numbers of the second CORESETs.
Optionally, as an embodiment, the receiving module 402 may be further configured to monitor the second PDCCH on a plurality of second CORESET.
Optionally, as an embodiment, the first receiving parameter includes a first TCI state of a first core set of the first PDCCH, the second receiving parameter includes a second core set of the second PDCCH, and the receiving parameter determining module 404 may be configured to determine, according to a first activated TCI state of the first core set of the first PDCCH, a second core set of the second PDCCH;
wherein the first active TCI state of the first CORESET is the same as the second active TCI state of the second CORESET.
Optionally, as an embodiment, the first core set is plural, and the second core set is plural; the first activated TCI state of the first CORESET is the same as the second activated TCI state of the second CORESET.
Optionally, as an embodiment, the receiving module 402 may be further configured to monitor the second PDCCH on a plurality of second CORESET.
Optionally, as an embodiment, the first core set is one, a plurality of target core sets use the same activated TCI state in the core sets that monitor the first PDCCH, and the receiving module 402 may be further configured to monitor the second PDCCH on the plurality of core sets that include the second core set.
Optionally, as an embodiment, the first receiving parameter includes a first QCL parameter of the first PDCCH, the second receiving parameter includes a second CORESET for monitoring the second PDCCH, and the receiving parameter determining module 404 may be configured to determine, according to the first QCL parameter of the first PDCCH, the second CORESET for monitoring the second PDCCH;
wherein the QCL relationship of the first QCL parameters is the same as the QCL relationship indicated by the second TCI status of the second CORESET.
Optionally, as an embodiment, the number of the second CORESET is multiple, and the receiving module 402 may be further configured to
Monitoring the second PDCCH on the CORESET with the smallest number in a plurality of second CORESETs; or
Monitoring the second PDCCH on the CORESET with the largest number in a plurality of second CORESETs; or
Monitoring the second PDCCH on a plurality of second CORESETs.
Optionally, as an embodiment, the QCL type of the first QCL parameter is type D quasi co-located;
the QCL of the second TCI status indication is of type D quasi co-located.
Optionally, as an embodiment, the first QCL parameter has a mapping relationship with a search space of the first PDCCH, the second receiving parameter includes a second CORESET for monitoring the second PDCCH, and the receiving parameter determining module 404 may be configured to determine the second QCL parameter and the search space of the first PDCCH
Determining a second CORESET for monitoring the second PDCCH according to the search space of the first PDCCH;
and the search space of the first PDCCH has a mapping relation with the second CORESET.
Optionally, as an embodiment, the first QCL parameter has a mapping relationship with a monitoring opportunity of the first PDCCH, the second receiving parameter includes a second CORESET for monitoring the second PDCCH, and the receiving parameter determining module 404 may be configured to determine the second CORESET for monitoring the second PDCCH according to the monitoring opportunity of the first PDCCH;
and the monitoring occasion of the first PDCCH has a mapping relation with the second CORESET.
Optionally, as an embodiment, the receiving module 402 may be further configured to monitor the second PDCCH on all core sets configured by the network device.
Optionally, as an embodiment, all the CORESET configured by the network device does not include the CORESET monitoring the first PDCCH.
Optionally, as an embodiment, the receiving module 402 may be further configured to monitor the second PDCCH on all core sets configured by the network device according to the second TCI status or the second QCL parameter;
wherein the second TCI state is the same as a first TCI state, the first TCI state being a TCI state of the first PDCCH; the second QCL parameter is the same as a first QCL parameter, which is a QCL parameter of the first PDCCH.
Optionally, as an embodiment, if there are multiple received first PDCCHs, the received parameter determining module 404 may be configured to determine a second received parameter of the second PDCCH according to the first received parameter of the first target PDCCH; wherein the first target PDCCH is a last detected one of the first PDCCHs.
The terminal device 400 according to the embodiment of the present invention may refer to the flow corresponding to the method 100 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the terminal device 400 are respectively for implementing the corresponding flow in the method 100 and achieving the same or equivalent technical effects, and for brevity, no further description is provided herein.
Fig. 5 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 500 shown in fig. 5 includes: at least one processor 501, memory 502, at least one network interface 504, and a user interface 503. The various components in the terminal device 500 are coupled together by a bus system 505. It is understood that the bus system 505 is used to enable connection communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 505 in FIG. 5.
The user interface 503 may include, among other things, a display, a keyboard, a pointing device (e.g., a mouse, trackball), a touch pad, or a touch screen.
It is to be understood that the memory 502 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr SDRAM ), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 502 of the subject systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 502 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof as follows: an operating system 5021 and application programs 5022.
The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 5022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. The program for implementing the method according to the embodiment of the present invention may be included in the application program 5022.
In this embodiment of the present invention, the terminal device 500 further includes: a computer program stored on a memory 502 and executable on a processor 501, the computer program, when executed by the processor 501, implementing the steps of the method 100 as follows.
The method disclosed by the above-mentioned embodiments of the present invention may be applied to the processor 501, or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed 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 (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 501, performs the steps of the embodiments of the method 100 as described above.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The terminal device 500 can implement the processes implemented by the terminal device in the foregoing embodiments, and can achieve the same or equivalent technical effects, and for avoiding repetition, the details are not described here.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the method embodiment 100, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (25)

1. A monitoring method for a Physical Downlink Control Channel (PDCCH), wherein the method is executed by a terminal device, and the method comprises the following steps:
receiving a first PDCCH; the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH;
determining a second receiving parameter of the second PDCCH according to the first receiving parameter of the first PDCCH;
and monitoring the second PDCCH according to the second receiving parameter.
2. The method of claim 1, wherein the first reception parameter comprises at least one of the following for the first PDCCH:
the number of a first control resource set CORESET;
a first transmission configuration of the first CORESET indicates a TCI status;
a first quasi co-located QCL parameter;
searching a space;
and monitoring the opportunity.
3. The method of claim 1, wherein the second reception parameter comprises at least one of:
monitoring a second CORESET of the second PDCCH;
a second TCI status of the second PDCCH;
a second QCL parameter of the second PDCCH.
4. The method of claim 1,
the receiving the first PDCCH includes: receiving a first PDCCH in an inactive period of Discontinuous Reception (DRX);
the monitoring the second PDCCH according to the second receiving parameter includes: and monitoring the second PDCCH according to the second receiving parameter in the activation period of DRX.
5. The method of claim 1, wherein the first PDCCH is further used for indicating channel occupancy information of an unlicensed frequency band;
wherein the channel occupation information includes at least one of whether a channel is occupied and channel occupation time COT information.
6. The method of claim 5, wherein the channel occupancy information comprises COT information, and wherein the monitoring the second PDCCH according to the second reception parameter comprises:
and monitoring the second PDCCH according to the COT information and the second receiving parameter.
7. The method of any one of claims 1 to 6, wherein the first reception parameter comprises a first CORESET number of the first PDCCH, wherein the second reception parameter comprises a second CORESET for monitoring the second PDCCH, and wherein determining the second reception parameter of the second PDCCH according to the first reception parameter of the first PDCCH comprises:
determining a second CORESET for monitoring the second PDCCH according to the number of the first CORESET of the first PDCCH;
wherein the number of the first CORESET is the same as the number of the second CORESET.
8. The method of claim 7, wherein there are a plurality of said first CORESET and a plurality of said second CORESET; the numbers of the first CORESETs are respectively the same as the numbers of the second CORESETs.
9. The method of claim 8, wherein the monitoring the second PDCCH according to the second reception parameters comprises:
monitoring the second PDCCH on a plurality of second CORESETs.
10. The method of any of claims 1 to 6, wherein the first reception parameter comprises a first TCI status of a first CORESET of the first PDCCH, wherein the second reception parameter comprises a second CORESET for monitoring the second PDCCH, and wherein determining the second reception parameter of the second PDCCH according to the first reception parameter of the first PDCCH comprises:
determining a second CORESET for monitoring the second PDCCH according to a first activated TCI state of a first CORESET of the first PDCCH;
wherein the first active TCI state of the first CORESET is the same as the second active TCI state of the second CORESET.
11. The method of claim 10, wherein there are a plurality of said first CORESET and a plurality of said second CORESET; the first activated TCI state of the first CORESET is the same as the second activated TCI state of the second CORESET.
12. The method of claim 11, wherein the monitoring the second PDCCH according to the second reception parameters comprises:
monitoring the second PDCCH on a plurality of second CORESETs.
13. The method of claim 10, wherein the first CORESET is one, wherein a plurality of CORESETs monitoring the first PDCCH use the same activated TCI state, and wherein monitoring the second PDCCH according to the second receiving parameter comprises:
monitoring the second PDCCH on a plurality of CORESETs including the second CORESET.
14. The method of any of claims 1 to 6, wherein the first receiving parameters comprise a first QCL parameter for the first PDCCH, wherein the second receiving parameters comprise a second CORESET for monitoring the second PDCCH, and wherein determining the second receiving parameters for the second PDCCH according to the first receiving parameters for the first PDCCH comprises:
determining a second CORESET for monitoring the second PDCCH according to the first QCL parameter of the first PDCCH;
wherein the QCL relationship of the first QCL parameters is the same as the QCL relationship indicated by the second TCI status of the second CORESET.
15. The method of claim 14, wherein the second core set is multiple, and wherein the monitoring the second PDCCH according to the second reception parameter comprises:
monitoring the second PDCCH on the CORESET with the smallest number in a plurality of second CORESETs; or
Monitoring the second PDCCH on the CORESET with the largest number in a plurality of second CORESETs; or
Monitoring the second PDCCH on a plurality of second CORESETs.
16. The method of claim 14,
the QCL type of the first QCL parameter is type D quasi co-location;
the QCL of the second TCI status indication is of type D quasi co-located.
17. The method of claim 14, wherein the first QCL parameter has a mapping relationship with a search space of the first PDCCH, wherein the second receive parameter comprises a second CORESET for monitoring the second PDCCH, and wherein determining the second receive parameter of the second PDCCH according to the first receive parameter of the first PDCCH comprises:
determining a second CORESET for monitoring the second PDCCH according to the search space of the first PDCCH;
and the search space of the first PDCCH has a mapping relation with the second CORESET.
18. The method of claim 14, wherein the first QCL parameter has a mapping relationship with a monitoring occasion of the first PDCCH, the second reception parameter comprises a second CORESET for monitoring the second PDCCH, and the determining the second reception parameter of the second PDCCH according to the first reception parameter of the first PDCCH comprises:
determining a second CORESET for monitoring the second PDCCH according to the monitoring opportunity of the first PDCCH;
and the monitoring occasion of the first PDCCH has a mapping relation with the second CORESET.
19. The method of any one of claims 1-6, further comprising: and monitoring the second PDCCH on all CORESETs configured by the network equipment.
20. The method of claim 19, wherein all CORESETs configured by the network device do not include a CORESET that monitors the first PDCCH.
21. The method of claim 19, wherein the monitoring the second PDCCH on all CORESET configured by the network device comprises:
monitoring the second PDCCH on all CORESETs configured by the network equipment according to the second TCI state or the second QCL parameter;
wherein the second TCI state is the same as a first TCI state, the first TCI state being a TCI state of the first PDCCH; the second QCL parameter is the same as a first QCL parameter, which is a QCL parameter of the first PDCCH.
22. The method according to any one of claims 1 to 4, wherein if there are multiple first PDCCHs, the determining the second reception parameter of the second PDCCH according to the first reception parameter of the first PDCCH comprises:
determining a second receiving parameter of the second PDCCH according to a first receiving parameter of a first target PDCCH;
wherein the first target PDCCH is last detected among the plurality of first PDCCHs.
23. A terminal device, comprising:
a receiving module, configured to receive a first PDCCH; the first PDCCH is used for indicating the terminal equipment to monitor a second PDCCH;
a receiving parameter determining module, configured to determine a second receiving parameter of the second PDCCH according to a first receiving parameter of the first PDCCH;
the receiving module is further configured to monitor the second PDCCH according to the second receiving parameter.
24. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of listening for PDCCH according to any of claims 1 to 22.
25. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, implements the steps of the method of monitoring of PDCCH according to any of claims 1 to 22.
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WO2023131238A1 (en) * 2022-01-06 2023-07-13 维沃移动通信有限公司 Pdcch resource determination method, terminal, and storage medium
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