CN111800843B

CN111800843B - Method for monitoring PDCCH, method and device for configuring BWP

Info

Publication number: CN111800843B
Application number: CN201910818886.3A
Authority: CN
Inventors: 姜大洁; 沈晓冬; 潘学明; 吴凯
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2023-07-25
Anticipated expiration: 2039-08-30
Also published as: CN111800843A

Abstract

The embodiment of the invention provides a method for monitoring PDCCH, a method for configuring BWP and equipment, wherein the method comprises the following steps: determining a first BWP, wherein the first BWP is one of a plurality of BWP configured by a network side, and the network side configures one or more CORESETs for the first BWP; listening for a first PDCCH at the first BWP or listening for a first PDCCH at the CORESET of the first BWP; the first PDCCH is a PDCCH in an duration of CDRX corresponding to a first energy-saving signal, and the first energy-saving signal indicates whether the terminal monitors the first PDCCH. In the embodiment of the invention, when the terminal needs to monitor the PDCCH in the duration of the CDRX corresponding to the energy-saving signal, the terminal can determine the BWP for monitoring the PDCCH according to the configuration of the network side or the predefined mode, so that the terminal can quickly complete the data receiving and ensure the communication quality.

Description

Method for monitoring PDCCH, method and device for configuring BWP

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method for monitoring a physical downlink control channel (Physical downlink control channel, PDCCH), a method for configuring a Bandwidth Part (BWP) and equipment.

Background

Currently a terminal, e.g. a User Equipment (UE), may listen for a power saving signal at an active BWP.

However, if the UE needs to monitor the PDCCH for the duration (duration) corresponding to the power saving signal, it is a problem to be solved on which BWP the UE monitors the PDCCH.

Disclosure of Invention

An object of an embodiment of the present invention is to provide a method for listening to PDCCH, a method for configuring BWP and a device for configuring BWP, which solve the problem of how to determine the BWP listening to PDCCH by the UE.

In a first aspect, an embodiment of the present invention provides a method for monitoring a physical downlink control channel, which is applied to a terminal, and includes:

determining a first bandwidth part, wherein the first bandwidth part is one of a plurality of bandwidth parts configured by a network side, and the network side configures one or more control channel resource sets for the first bandwidth part;

monitoring a first physical downlink control channel in the first bandwidth part, or monitoring a first PDCCH in a control channel resource set of the first BWP;

the first physical downlink control channel is a physical downlink control channel within a duration of discontinuous reception in a connection state corresponding to a first energy saving signal, and the first energy saving signal indicates whether the terminal monitors the first physical downlink control channel.

In a second aspect, an embodiment of the present invention further provides a method for configuring a bandwidth portion, which is applied to a network device, and includes:

configuring a first bandwidth part, wherein the first bandwidth part is used for a terminal to monitor a first physical downlink control channel, or a control channel resource set of the first bandwidth part is used for the terminal to monitor the first physical downlink control channel, and the first bandwidth part corresponds to one or more control channel resource sets;

In a third aspect, an embodiment of the present invention further provides a terminal, including:

a determining module, configured to determine a first bandwidth portion, where the first bandwidth portion is one of a plurality of bandwidth portions configured by a network side, and the network side configures one or more control channel resource sets for the first bandwidth portion;

a monitoring module, configured to monitor a first physical downlink control channel in the first bandwidth portion, or monitor a first physical downlink control channel in a control channel resource set of the first bandwidth portion;

In a fourth aspect, an embodiment of the present invention further provides a network device, including:

the configuration module is used for configuring a first bandwidth part, wherein the first bandwidth part is used for a terminal to monitor a first physical downlink control channel, or a control channel resource set of the first bandwidth part is used for the terminal to monitor the first physical downlink control channel, and the first bandwidth part corresponds to one or more control channel resource sets;

In a fifth aspect, an embodiment of the present invention further provides a terminal, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of listening to a physical downlink control channel as described in the first aspect.

In a sixth aspect, an embodiment of the present invention further provides a network device, including: a processor, a memory, and a program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method of configuring a bandwidth portion of the second aspect.

In a seventh aspect, embodiments of the present invention further provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of listening to a physical downlink control channel as described in the first aspect, or the steps of the method of configuring a bandwidth part as described in the second aspect.

In the embodiment of the invention, when the terminal needs to monitor the PDCCH in the onduration of the CDRX corresponding to the energy-saving signal, the terminal can configure or autonomously determine the BWP for monitoring the PDCCH according to the network side, so that the terminal can quickly complete the data reception and ensure the communication quality.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic diagram of a DRX cycle;

FIG. 2 is a schematic diagram of wake-up signals of CDRX;

fig. 3 is a schematic diagram of a wireless communication system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a method for monitoring PDCCH according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a method for configuring BWP according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a terminal according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a network device according to an embodiment of the present invention;

FIG. 8 is a second schematic diagram of a terminal according to an embodiment of the present invention;

fig. 9 is a second schematic diagram of a network device according to an embodiment of the invention.

Detailed Description

In order to facilitate understanding of the embodiments of the present invention, several technical points are described below:

(1) Discontinuous reception (Discontinuous Reception, DRX) in radio resource control (Radio Resource Control, RRC) IDLE (rrc_idle) state:

in a long term evolution (Long Term Evolution, LTE) or fifth generation mobile communication (5G) system, a UE in an rrc_idle state needs to detect a paging signal transmitted by a base station at a preconfigured time, and a procedure of detecting the paging signal is as follows:

blind detecting a physical downlink control channel (Physical downlink control channel, PDCCH) corresponding to a Paging radio network temporary identifier (P-RNTI), and if the PDCCH is not detected, entering to finish the detection; if the PDCCH is detected to exist, further detecting a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) indicated by the PDCCH, and if the detected PDSCH is not a paging signal of the UE, ending the detection; otherwise, the detected PDSCH is the paging signal of the user.

The UE in rrc_idle state periodically detects the paging signal, but the probability of receiving the paging signal belonging to the UE is relatively low, and the power consumption of PDCCH and PDSCH detected each time is relatively high, which is not beneficial to terminal power saving.

(2) DRX in RRC connected state:

the basic mechanism of DRX is to configure a DRX cycle (cycle) for a UE in an rrc_connected state. DRX cycle consists of "On Duration" and "opportunity for DRX (Opportunity for DRX)": during the "On Duration" time, the UE listens for and receives the PDCCH (active period); during the "Opportunity for DRX" time, the UE does not receive data of the downlink channel to save power consumption (sleep period).

As can be seen from fig. 1, in the time domain, time is divided into successive DRX cycles.

The drxStartOffset specifies the starting subframe of the DRX Cycle, and the longDRX-Cycle specifies how many subframes a long (long) DRX Cycle occupies, both parameters being determined by the longDRX-Cycle tartoffset field. The onduration timer specifies the number of consecutive subframes (i.e., the number of subframes during which the active period lasts) that need to monitor the PDCCH from the beginning subframe of the DRX cycle.

In most cases, when a UE is scheduled and receives or transmits data in a certain subframe, it is likely that it will continue to be scheduled in the next few subframes, with additional delay if it is to wait for the next DRX cycle to receive or transmit the data. To reduce such delay, the UE may be continuously located in the active period after being scheduled, i.e., may continuously monitor the PDCCH for the configured active period. The implementation mechanism is as follows: each time the UE is scheduled to initially transmit data, a timer (drx-incaactyittmer) is started (or restarted), and the UE will be in an active state until the timer times out. The drx-inactivity timer specifies the number of consecutive subframes in an active state after the UE successfully decodes a PDCCH indicating primary Uplink (UL) or Downlink (DL) user data. I.e. the timer is restarted every time the UE has primary data scheduled. .

In order to further save power consumption of a blind detection Paging (Paging) signal or PDCCH under the above two DRX, concepts of a wake-up signal (WUS) and a sleep signal (collectively referred to as a power saving signal (power saving signal)) are proposed.

(3) Power saving signal in rrc_idle or RRC inactive (rrc_inactive) state:

in each Paging (Paging) cycle in the idle state, the base station transmits a power saving signal to the UE before a Paging Occasion (PO), and the UE detects the power saving signal at a corresponding time.

If the power saving signal indicates that the UE detects the PDCCH at the PO moment, the UE detects the PDCCH;

if the power saving signal does not indicate the UE to detect the PDCCH at the PO moment, the UE does not detect the PDCCH;

alternatively, detecting the power save signal is less complex and more power efficient than blind detecting the Paging signal or PDCCH.

(4) Power saving signal for RRC connected state:

in each Connected DRX (CDRX) cycle of RRC connection, the base station transmits a power save signal to a UE or group of UEs, which detects the power save signal at a corresponding time, before an duration.

Referring to fig. 2, if the UE or the group of UEs receives a power save signal and the power save signal instructs the UE or the group of UEs to detect a PDCCH within an duration or instructs the UE or the group of UEs to wake up, the UE or the group of UEs detect a PDCCH;

If the UE or the group of UEs receives a power save signal and the power save signal does not indicate the UE or the group of UEs to detect PDCCH within an duration or indicate the UE or the group of UEs to sleep (go to sleep), the UE or the group of UEs does not detect PDCCH;

if the UE or group of UEs does not receive the power save signal, the UE or group of UEs either detects the PDCCH within the onduration or does not detect the PDCCH within the onduration.

The power saving signal may be a PDCCH-like signal, a sequence related signal such as a channel state information reference signal (Channel State Indication-Reference Signals, CSI-RS), or an on-off keying (OOK) signal.

(5) timer based BWP fallback mechanism:

the UE does not receive a Cell radio network temporary identity (Cell RNTI, C-RNTI) or a configuration scheduling (Configured Scheduling RNTI, CS-RNTI) scrambled PDCCH for a certain time, and then the UE rolls back to a default downlink bandwidth portion (default DL BWP). The default DL BWP is configured by the network side through RRC signaling, and if the network side does not configure the default DL BWP, the default DL BWP is an initial downlink bandwidth part (initial DL BWP).

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means at least one of the connected objects, e.g., a and/or B, meaning that it includes a single a, a single B, and that there are three cases of a and B.

In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The techniques described herein are not limited to long term evolution (Long Time Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems and may also be used for various wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems.

The terms "system" and "network" are often used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, universal terrestrial radio access (Universal Terrestrial Radio Access, UTRA), and the like. UTRA includes wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as the global system for mobile communications (Global System for Mobile Communication, GSM). OFDMA systems may implement radio technologies such as ultra mobile broadband (Ultra Mobile Broadband, UMB), evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, and the like. UTRA and E-UTRA are parts of the universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS). LTE and higher LTE (e.g., LTE-a) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-a and GSM are described in the literature from an organization named "third generation partnership project" (3rd Generation Partnership Project,3GPP). CDMA2000 and UMB are described in the literature from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies.

Embodiments of the present invention are described below with reference to the accompanying drawings. The method for monitoring the PDCCH, the method for configuring the BWP and the device provided by the embodiment of the invention can be applied to a wireless communication system. Referring to fig. 3, an architecture diagram of a wireless communication system according to an embodiment of the present invention is provided. As shown in fig. 3, the wireless communication system may include: a network device 31 and a terminal 32, the terminal 32 may be denoted as UE32, and the terminal 32 may communicate (transmit signaling or transmit data) with the network device 31. In practical application, the connection between the devices may be wireless connection, and for convenience and intuitionistic representation of the connection relationship between the devices, a solid line is used for illustration in fig. 3.

The network device 31 provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node b (evolved node base station, eNB), or a network device in a 5G system (for example, a next generation base station (next generation node base station, gNB) or a transmitting and receiving point (transmission and reception point, TRP)) and the like.

The terminal 32 provided by the embodiment of the invention can be a mobile phone, a tablet computer, a notebook computer, an Ultra-mobile personal computer (Ultra-Mobile Personal Computer, UMPC), a netbook or personal digital assistant (Personal Digital Assistant, PDA), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device or a vehicle-mounted Device, and the like.

Referring to fig. 4, an embodiment of the present invention provides a method for determining BWP, and an execution subject of the method may be a terminal, including steps 401 and 402.

Step 401: determining a first BWP, which is one of a plurality of BWPs configured by a network side, and for which the network side has configured one or more control channel resource sets (Control resource set, CORESET), otherwise referred to as control resource sets;

for example, the network side configures a plurality of BWP through RRC signaling, and then the network side configures one of the BWP as the first BWP through higher layer signaling or a medium access Control layer Control unit (Medium Access Control-Control Element, MAC-CE).

Step 402: the first PDCCH is monitored at the first BWP or at the CORESET of the first BWP.

The first PDCCH is a duration (duration) of connection state discontinuous reception (Connected Discontinuous Reception, CDRX) of a Primary Cell (Pcell) or a Primary Secondary Cell (Primary Secondary Cell, PScell) or a Secondary Cell (Scell) corresponding to a first power saving signal, or further includes a PDCCH within a DRX activation time (active time), and the first power saving signal indicates whether the terminal listens to the first PDCCH.

The above-mentioned power saving signal may be a PDCCH-like signal, or a sequence-related signal such as CSI-RS, or an OOK signal.

Optionally, before step 401, the terminal may listen for a first power saving signal sent by the Pcell or the PScell.

In some embodiments, the first PDCCH is a PDCCH in an onduration of CDRX of a primary cell Pcell or a secondary cell PScell corresponding to the first power saving signal;

accordingly, the first BWP comprises one or more of the following:

(1) The network side configures a BWP of the Pcell or PScell for the terminal;

further, the first BWP is one of a plurality of BWPs of the network side indicating a Pcell or a PScell through higher layer signaling (e.g., RRC) or MAC-CE.

(2) The terminal activates BWP in Pcell or PScell;

for example: the active BWP of the terminal in the Pcell or PScell may be the current active BWP of the terminal in the Pcell or PScell, or the last active BWP of the terminal in the Pcell or PScell, for example, the BWP activated by the last CDRX cycle, or the BWP listening to the first PDCCH at the beginning or end of the last wake-up DRX active time.

(3) Default (default) BWP of the terminal in Pcell or PScell;

(4) Initial (initial) BWP of terminal in Pcell or PScell

(5) BWP where the first energy saving signal is located.

In some embodiments, the first PDCCH is a PDCCH within an duration of a CDRX of a Secondary Cell (Scell) corresponding to the first energy saving signal;

accordingly, the first BWP comprises one or more of the following:

(1) The network side configures a BWP of the Scell for the terminal;

further, the first BWP indicates one of the BWP of the Scell for the network side through higher layer signaling or MAC-CE.

(2) The terminal activates BWP in Scell;

for example: the active BWP of the terminal at the Scell may be the current active BWP of the terminal at the Scell, or the last active BWP of the terminal at the Scell, e.g. the BWP of the Scell activated by the last CDRX cycle, or the BWP of the first PDCCH monitored at the beginning or end of the last awake DRX active time.

(3) Default BWP of the terminal in Scell;

(4) The terminal is in initial BWP of the Scell;

(5) And BWP of the Scell, wherein the BWP of the Scell is associated with BWP of a Pcell or a PScell where the energy saving signal is located.

For example, pcell has two RRC configured BWPs, BWP1 is 20MHz and BWP2 is 100Mhz; scell has two RRC configured BWP, BWP3 of 20Mhz and BWP4 of 100Mhz; at this time, BWP1 of the Pcell and BWP3 of the Scell are associated, and BWP2 of the Pcell and BWP4 of the Scell are associated.

In the embodiment of the invention, when the terminal needs to monitor the PDCCH in the Pcell or PScell or CDRX duration of the SCell corresponding to the energy-saving signal, the terminal can determine the BWP for monitoring the PDCCH according to the configuration of the network side or a predefined mode, so that the terminal can quickly complete the data receiving and ensure the communication quality.

Referring to fig. 5, an embodiment of the present invention further provides a method for configuring BWP, where an execution body of the method is a network device, and specific steps include: step 501.

Step 501: configuring a first BWP, wherein the first BWP is used for a terminal to monitor a first PDCCH, or CORESET of the first BWP is used for the terminal to monitor the first PDCCH, and the first BWP corresponds to one or more CORESET;

the first PDCCH is a duration of CDRX of a primary cell or a primary and secondary cell or a secondary cell corresponding to a first energy saving signal or further includes a PDCCH in a DRX activation time (active time), and the first energy saving signal indicates whether the terminal listens to the first PDCCH.

In some embodiments, the first PDCCH is a PDCCH within an duration of CDRX of a Pcell or a PScell corresponding to the first energy saving signal. In step 501, a first BWP of a Pcell or a PScell is configured for a terminal through higher layer signaling or MAC-CE.

In other embodiments, the first PDCCH is a PDCCH within an duration of CDRX of the Scell corresponding to the first energy saving signal. In step 501, the first BWP of the Scell is configured for the terminal through higher layer signaling or MAC-CE.

In the embodiment of the invention, when the energy-saving signal to be monitored by the terminal corresponds to the PDCCH in the duration of the CDRX of the Scell, the terminal can configure or autonomously determine the BWP for monitoring the PDCCH according to the network side, so that the terminal can quickly complete the data reception and ensure the communication quality.

The following describes the technical solution of the embodiment of the present invention in combination with scenario 1 and scenario 2.

Scene 1:

in a Non-carrier aggregation (Non-Carrier Aggregatio, non-CA) scenario, the UE listens to the WUS of the primary cell or the primary secondary cell (Pcell/PScell) to determine whether to listen to the PDCCH in the onduration of the CDRX of the Pcell/PScell corresponding to the WUS. At this time, how to determine which BWP to monitor the PDCCH is described in embodiment 1 to embodiment 4.

Embodiment 1:

the network side configures a first BWP for the Pcell/PScell through RRC signaling. Alternatively, the first BWP may be one of N (e.g., n=1, 2, or 4, etc.) BWPs configured by RRC for the Pcell/pscell c.

If the UE needs to monitor the PDCCH in the duration of CDRX of the Pcell/PScell corresponding to WUS, the UE monitors the PDCCH in the first BWP or CORESET of the first BWP.

In embodiment 1, under the BWP back-off (timer based BWP fallback) mechanism based on the timer, if the UE does not receive the C-RNTI or CS-RNTI scrambled PDCCH for a certain time, the UE backs off to default DL BWP, where active BWP is default DL BWP, and the UE listens for the energy-saving signal at the default DL BWP. If the UE needs to monitor the PDCCH in the duration of CDRX of the Pcell/PScell corresponding to the WUS at this time, for example, WUS indicates that the UE needs to monitor the PDCCH, at this time, the base station may configure a wider first BWP for the Pcell/PScell through RRC, and the UE monitors the PDCCH at the first BWP and completes fast data reception.

Embodiment 2:

the UE listens for PDCCH on the current active BWP (or the last active BWP, e.g. last wake-up BWP) of the Pcell/PScell;

alternatively, the UE listens for PDCCH on the CORESET of the current active BWP (or the last active BWP, such as the last wake-up BWP) of the Pcell/PScell.

Embodiment 3:

the UE monitors PDCCH in default BWP/initial BWP of the Pcell/PScell;

Embodiment 4:

the UE monitors PDCCH at the BWP where the WUS is located;

Alternatively, the UE listens for PDCCH on CORESET of the BWP where the WUS is located.

In the above embodiment, if the UE needs to monitor the PDCCH in the duration of CDRX of the Pcell/PScell corresponding to WUS, for example WUS indicates that the UE needs to monitor the PDCCH, the UE may determine BWP according to any one of embodiments 2 to 4, and the UE monitors the PDCCH in the BWP and completes receiving data quickly.

Scene 2:

in a New Radio (NR) CA scenario, the UE listens to WUS on a Pcell/PScell to determine whether to listen to a PDCCH in an onduration of CDRX of a Secondary Cell (Scell) corresponding to the WUS. How to determine which BWP listens to the PDCCH is described in embodiments 1 to 4.

Embodiment 1:

the RRC configures one second BWP for the Scell. Alternatively, the first BWP may be one of N (n=1, 2, 4, etc.) BWPs configured by RRC for the Scell.

If the UE needs to monitor the PDCCH in the duration of CDRX of the Scell corresponding to WUS, the UE monitors the PDCCH in the first BWP or CORESET of the first BWP.

If the UE needs to monitor the PDCCH in the duration of CDRX of the Scell corresponding to WUS, for example WUS indicates that the UE needs to monitor the PDCCH; at this time, the base station may configure the Scell with a wider first BWP through RRC, and the UE listens to the PDCCH at the first BWP and completes the reception of data quickly.

Embodiment 2:

the UE listens for PDCCH on the current active BWP of the Scell (or the last active BWP, last wake up BWP);

alternatively, the UE listens for PDCCH on CORESET of the current active BWP (or the last active BWP, e.g. last wake-up) of the Scell.

Embodiment 3:

the UE monitors PDCCH in default BWP or initial BWP of the Scell;

alternatively, the UE listens for PDCCH on CORESET of default BWP or initial BWP of the Scell.

Embodiment 4:

the UE listens to the PDCCH at the BWP of the Scell where the BWP of the WUS/PScell is associated with the BWP of the Scell.

In the above embodiment, if the UE needs to monitor the PDCCH in the duration of CDRX of the Scell corresponding to WUS, for example WUS indicates that the UE needs to monitor the PDCCH, the UE may determine BWP according to any one of embodiments 2 to 4, and the UE monitors the PDCCH in the BWP and completes the data reception quickly.

The embodiment of the invention also provides a terminal, and because the principle of solving the problem by the network equipment is similar to that of the method for determining BWP in the embodiment of the invention, the implementation of the terminal can be referred to the implementation of the method, and the repetition is not repeated.

Referring to fig. 6, an embodiment of the present invention further provides a terminal, the terminal 600 including:

a determining module 601, configured to determine a first BWP, where the first BWP is one of a plurality of BWP configured by a network side, and the network side configures one or more CORESET for the first BWP;

a listening module 602, configured to listen to the first PDCCH at the first BWP, or listen to the first PDCCH at a CORESET of the first BWP;

the first PDCCH is a duration of CDRX of a primary cell or a primary and secondary cell or a secondary cell corresponding to an energy-saving signal or further includes a PDCCH in a DRX activation time (active time), and the first energy-saving signal indicates whether the terminal listens to the first PDCCH.

In some embodiments, the first PDCCH is a PDCCH within an duration of CDRX of a Primary Cell (Pcell) or a Primary secondary Cell (Primary Secondary Cell, PScell) corresponding to the first energy saving signal;

the first BWP comprises one or more of the following:

(1) The network side configures a BWP of the Pcell or PScell for the terminal;

(2) The terminal activates BWP in Pcell or PScell;

for example: the active BWP of the terminal in the Pcell or PScell may be the current active BWP of the terminal in the Pcell or PScell, or the last active BWP of the terminal in the Pcell or PScell, for example, the BWP of the Pcell or PScell activated by the last CDRX cycle, or the BWP listening to the first PDCCH at the beginning or end of the last wake-up DRX active time.

(3) Default (default) BWP of the terminal in Pcell or PScell;

(4) Initial (initial) BWP of terminal in Pcell or PScell

(5) BWP where the first energy saving signal is located.

In some embodiments, the first PDCCH is a PDCCH within an duration of CDRX of the Scell corresponding to the first energy saving signal;

the first BWP comprises one or more of the following:

(1) The network side configures a BWP of the Scell for the terminal;

(2) The terminal activates BWP in Scell;

(3) Default BWP of the terminal at Scell;

(4) The terminal is in initial BWP of Scell;

(5) The BWP of the Scell, wherein the BWP of the Scell is associated with the BWP of the Pcell or the PScell where the first energy saving signal is located.

The terminal provided in the embodiment of the present invention may implement the embodiment shown in fig. 4, and its implementation principle and technical effects are similar, and this embodiment will not be described herein.

The embodiment of the invention also provides a network device, and because the principle of solving the problem of the network device is similar to that of the method for configuring BWP in the embodiment of the invention, the implementation of the network device can be referred to the implementation of the method, and the repetition is not repeated.

Referring to fig. 7, the embodiment of the present invention further provides a network device, where the network device 700 includes:

a configuration module 701, configured to configure a first BWP, where the first BWP is used for a terminal to monitor a first PDCCH, or a CORESET of the first BWP is used for the terminal to monitor a first PDCCH, and the first BWP corresponds to one or more CORESETs;

The first PDCCH is a duration of CDRX of a main cell or a main and auxiliary cell or an auxiliary cell corresponding to an energy-saving signal or further comprises a PDCCH in DRX active time, and the first energy-saving signal indicates whether the terminal monitors the first PDCCH.

In some embodiments, the first PDCCH is a PDCCH within an duration of CDRX of a Pcell or a PScell corresponding to the first energy saving signal; further, the configuration module 701 is further configured to: the first BWP of the Pcell or PScell is configured for the terminal through higher layer signaling or MAC-CE.

In other embodiments, the first PDCCH is a PDCCH within an duration of CDRX of the Scell corresponding to the first energy saving signal; further, the configuration module 701 is further configured to: the first BWP of the Scell is configured for the terminal through higher layer signaling or MAC-CE.

The network device provided in the embodiment of the present invention may implement the embodiment shown in fig. 5, and its implementation principle and technical effects are similar, and this embodiment will not be described herein.

As shown in fig. 8, the terminal 800 shown in fig. 8 includes: at least one processor 801, memory 802, at least one network interface 804, and a user interface 803. The various components in terminal 800 are coupled together by a bus system 805. It is appreciated that the bus system 805 is used to enable connected communications between these components. The bus system 805 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 805 in fig. 8.

The user interface 803 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).

It will be appreciated that the memory 802 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data rate SDRAM (Double Data rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 802 of the systems and methods described in embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some implementations, the memory 802 holds the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof: an operating system 8021 and application programs 8022.

The operating system 8021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 8022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. The program for implementing the method of the embodiment of the present invention may be contained in the application program 8022.

In one embodiment of the present invention, the steps described in the method of fig. 4 above are implemented when executed by calling a program or instruction stored in the memory 802, specifically, a program or instruction stored in the application 8022.

The terminal provided by the embodiment of the present invention may execute the above embodiment of the method for determining BWP, and its implementation principle and technical effects are similar, and this embodiment will not be described herein.

Referring to fig. 9, fig. 9 is a block diagram of a network device to which the embodiment of the present invention is applied, and as shown in fig. 9, a network device 900 includes: processor 901, transceiver 902, memory 903, and bus interfaces, wherein processor 901 may be responsible for managing the bus architecture and general processing. The memory 903 may store data used by the processor 901 in performing operations.

In one embodiment of the present invention, the network device 900 further comprises: a computer program stored on the memory 903 and executable on the processor 901, which when executed by the processor 901 performs the steps in the method shown in fig. 5 above.

In fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, represented in particular by processor 901, and the memory, represented by memory 903, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 902 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The network device provided in the embodiment of the present invention may execute the method embodiment for configuring BWP, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.

The steps of a method or algorithm described in connection with the present disclosure may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable disk, a read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a core network interface device. The processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention in further detail, and are not to be construed as limiting the scope of the invention, but are merely intended to cover any modifications, equivalents, improvements, etc. based on the teachings of the invention.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and the equivalents thereof, the present invention is also intended to include such modifications and variations.

Claims

1. A method for monitoring a physical downlink control channel, applied to a terminal, comprising:

monitoring a first physical downlink control channel in the first bandwidth part, or monitoring the first physical downlink control channel in a control channel resource set of the first bandwidth part;

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the first physical downlink control channel is a physical downlink control channel in the duration of discontinuous reception of the connection state of the primary cell or the primary and secondary cells corresponding to the first energy-saving signal;

the first bandwidth portion includes one or more of:

the network side configures a bandwidth part of the main cell or the main and auxiliary cells;

the terminal activates the bandwidth part in the primary cell or the primary and secondary cells;

the terminal is in the default bandwidth part of the primary cell or the primary and secondary cells;

the terminal is in the initial bandwidth part of the primary cell or the primary and secondary cells;

and the bandwidth part of the first energy saving signal is located.

3. The method according to claim 2, wherein the first bandwidth part is one of a plurality of bandwidth parts of the primary cell or the primary and secondary cells indicated by the network side through higher layer signaling or a medium access control layer control unit.

4. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the first physical downlink control channel is a physical downlink control channel in the duration of discontinuous reception of the connection state of the secondary cell corresponding to the first energy-saving signal;

the first bandwidth portion includes one or more of:

the network side configures a bandwidth part of the auxiliary cell;

the terminal activates a bandwidth part in the secondary cell;

the terminal is in a default bandwidth part of the auxiliary cell;

the terminal is in the initial bandwidth part of the secondary cell;

and the bandwidth part of the secondary cell is associated with the bandwidth part of the primary cell or the primary and secondary cells where the first energy saving signal is located.

5. The method of claim 4, wherein the first bandwidth part is one of a plurality of bandwidth parts of the secondary cell indicated by the network side through higher layer signaling or a medium access control layer control unit.

6. A method for configuring a bandwidth portion, for use in a network device, comprising:

7. The method of claim 6, wherein the step of providing the first layer comprises,

the configuring the first bandwidth portion includes:

indicating the first bandwidth part of the main cell or the main and auxiliary cells through a high-layer signaling or a media access control layer control unit;

or alternatively, the process may be performed,

the configuring the first bandwidth portion includes:

the first bandwidth part of the secondary cell is indicated by a higher layer signaling or medium access control layer control unit.

8. A terminal, comprising:

9. A network device, comprising:

10. A terminal, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of listening to a physical downlink control channel as claimed in any one of claims 1 to 5.

11. A network device, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method of configuring a bandwidth part as claimed in any one of claims 6 to 7.

12. A computer readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the steps of the method of listening to a physical downlink control channel as claimed in any one of claims 1 to 5, or the steps of the method of configuring a bandwidth part as claimed in any one of claims 6 to 7.