CN114071480A

CN114071480A - Method and terminal for monitoring control channel and determining transmission configuration indication

Info

Publication number: CN114071480A
Application number: CN202110513672.2A
Authority: CN
Inventors: 宋磊; 陈润华; 高秋彬; 苏昕
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-07
Filing date: 2021-05-11
Publication date: 2022-02-18

Abstract

The present invention relates to the field of wireless communication technologies, and in particular, to a method and a terminal for monitoring a control channel and determining a transmission configuration indication. The terminal determines at least two CORESET or search space sets with at least two QCL-TypeD characteristics to be monitored according to the first information, or determines at least two CORESET or search space sets with incidence relation to be monitored according to the transmission pattern of the control channel, and monitors at least two control channels according to the determined CORESET or search space sets. Because the terminal determines at least two CORESET or search space sets to be monitored with at least two QCL-type characteristics or CORESET or search space sets with an association relation, the CORESET or search space sets monitored by the terminal can correspond to different transmission points, so that the terminal can receive control channels sent by a plurality of transmission points on the same symbol, and the waste of resources is reduced.

Description

Method and terminal for monitoring control channel and determining transmission configuration indication

The priority of chinese patent application entitled "a method and terminal for monitoring control channels and determining transmission configuration indication" filed by the chinese patent office on 07/08/2020, having application number 202010790474.6, is hereby incorporated by reference in its entirety.

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and a terminal for monitoring a control channel and determining a transmission configuration indication.

Background

In a New Radio (NR) system, a terminal can only monitor a control channel with the same beam on one symbol, and with the introduction of a multi-transmission point technology, the receiving capability of the terminal is also enhanced, and data channels with different Quasi-Co-Location type D (QCL-type D) characteristics, which are transmitted by two transmission points, can be received on one symbol, however, the control channels that can be monitored can still only have the same QCL-type D characteristics. Thus, when a plurality of transmission points transmit a plurality of control channels on the same symbol, the terminal can only receive the control channels with one QCL-type characteristic, thereby causing resource waste.

With the introduction of multiple transmission point technologies, a terminal may receive two Physical Downlink Shared Channels (PDSCHs) with different beams on one symbol. In addition, there may be other physical channels and/or physical signals that may be multiplexed with the PDSCH on the same symbol. When multiple physical channels and/or physical signals are multiplexed and transmitted on the same symbol, the terminal may not receive all the physical signals and/or physical signals sent by the network side device, resulting in a waste of resources.

In summary, there is a problem of resource waste when the network side device sends the physical signal and/or the physical signal to the terminal.

Disclosure of Invention

The invention provides a method and a terminal for monitoring a control channel and determining a transmission configuration indication, which are used for solving the problem of resource waste when network side equipment sends a physical signal and/or a physical signal to the terminal in the prior art.

In a first aspect, an embodiment of the present invention provides a method for monitoring a control channel, where the method includes:

the terminal determines at least two Control Resource sets (CORESET) or search space sets with at least two QCL-type characteristics to be monitored according to first information configured by network side equipment; or the terminal determines at least two CORESET or search space sets with correlation to be monitored according to a control channel transmission pattern configured by the network side equipment;

and the terminal monitors at least two control channels according to the determined at least two CORESET or search space sets to be monitored.

Optionally, the determining, by the terminal, at least two control resource sets CORESET to be monitored, which have at least two QCL-type characteristics, according to the first information configured by the network side device, includes:

the terminal determines at least two to-be-monitored CORESETs with at least two QCL-TypeD characteristics in different CORESET groups according to first information configured by network side equipment; or

The terminal determines at least two to-be-monitored CORESETs with at least two QCL-TypeD characteristics in the same CORESET group according to first information configured by network side equipment;

wherein the CORESET group comprises a plurality of CORESETs with the same high-level parameter configuration;

the terminal determines at least two search space sets to be monitored and having at least two QCL-TypeD characteristics according to first information configured by network side equipment, and the method comprises the following steps:

the terminal determines at least two same search space sets with at least two QCL-TypeD characteristics to be monitored in the same CORESET according to first information configured by network side equipment; or

The terminal determines at least two different search space sets with at least two QCL-TypeD characteristics to be monitored in the same CORESET according to the first information configured by the network side equipment.

Optionally, the at least two determined CORESET to be monitored include:

one of a first set of CORESETs for a first cell and one of a second set of CORESETs for the first cell; or

A CORESET corresponding to a search space set of a second cell and a CORESET of the first cell, wherein the search space set of the second cell is a search space set with a lowest search space set index in the second cell; or

At least two CORESETs having different QCL-TypeD characteristics corresponding to the plurality of search space sets having the lowest index; or

A CORESET corresponding to a search space set of the second cell and a CORESET of a third cell, where the CORESET of the third cell is a CORESET where a search space set associated with the search space set of the second cell is located or a CORESET where a search space set having a lower cell index and/or search space set index value is located; or

A CORESET where a search space set of a fourth cell is located and a CORESET where a search space set of a fifth cell is located, wherein one search space set of the fourth cell is a search space set having a lowest cell index and/or search space set index value in search space sets having an association relationship; one search space set of the fifth cell is a search space set associated with the search space set of the fourth cell or a search space set having a lower cell index and/or search space set index value.

Optionally, the determining at least two search space sets to be monitored includes:

a set of search spaces of the second cell and a set of search spaces of the third cell, a set of search spaces of the third cell being a set of search spaces associated with the set of search spaces of the second cell or a set of search spaces having a lower cell index and/or search space set index value; or

One search space set of the fourth cell and one search space set of a fifth cell, wherein one search space set of the fourth cell is a search space set with a lowest cell index and/or search space set index value in the search space sets with the association relationship; one search space set of the fifth cell is a search space set associated with the search space set of the fourth cell or a search space set having a lower cell index and/or search space set index value.

Optionally, one search space set of the second cell includes:

the search space set with the lowest search space set index in the search space sets with the association relationship in the second cell or the search space set with the lowest search space set index.

Optionally, one core set in the first core set includes:

the CORESET corresponding to the USS set or the CSS set with the lowest index in the first search space set is provided, wherein the first search space set is a search space set associated with the first CORESET set of the first cell;

one CORESET of the second set of CORESETs, comprising:

and a CORESET corresponding to the USS set or the CSS set with the lowest index in the second search space set, wherein the second search space set is a search space set associated with the second CORESET set of the first cell.

Optionally, the first cell includes:

the cell with the lowest index in the cells containing the values of two different control resource set high-level parameters CORESETPoolIndex; or

The cell with the highest index in the cells containing two different CORESETPoolIndex values; or

All cells in the cell containing two different coresetpoolndex values; or

The network side equipment is a pre-configured cell.

Optionally, the second cell includes:

a cell having the lowest index among cells including the CSS set; or

A cell having a lowest Common Search Space (CSS) set index or a terminal-specific search space (USS) set index among all cells; or

The cell with the lowest index among the cells containing the USS set.

Optionally, the association relationship includes:

an association relation among CORESET indexes, search space indexes and Transmission Configuration Indication (TCI) states among CORESETs of a plurality of time slots; or

And the correlation relationship among the CORESET indexes, the search space indexes and the TCI states among the CORESETs in the same time slot.

Optionally, the method further includes:

if the network side equipment does not configure the first information for the terminal, the terminal determines a CORESET or a search space set with a QCL-type characteristic; or

And if the network side equipment configures second information for the terminal, the terminal determines a CORESET or a search space set with a QCL-type D characteristic, wherein the second information is used for indicating the terminal to monitor the CORESET or the search space set with the QCL-type D characteristic.

Optionally, if the network side device configures the second information for the terminal, the terminal determines a CORESET or a search space set having a QCL-type characteristic, including:

the terminal determines the CORESET or search space set with a QCL-type characteristic according to part or all of the following information:

a cell index;

CORESET group information;

the spatial index is searched.

Optionally, the control channel transmission pattern includes:

repeatedly transmitting the control channel between the time slots, wherein the search space of each time slot is the same or the CORESET is the same; or

Repeatedly transmitting a control channel in a CORESET, wherein the CORESET has at least one TCI state; or

The CORESET within a slot or between slots repeats the transmission of the control channel, and the offset between the control CORESET and the search space is a fixed value.

Optionally, the first information includes RRC signaling and/or MAC CE signaling, where the RRC signaling and/or MAC CE signaling are used to indicate a set of CORESET or search space that may be monitored.

In a second aspect, an embodiment of the present invention provides a method for determining a transmission configuration indication, where the method includes:

the terminal determines configuration information which is configured by the network side equipment and used for determining the TCI state;

and the terminal determines one or two TCI states used for transmitting all physical channels and/or physical signals in a time unit according to the configuration information, wherein the TCI state of each physical channel or physical signal is at least one of the one or two TCI states.

Optionally, the physical Signal includes a Channel State Information Reference Signal (CSI-RS), and the one or two TCI states include part or all of the following:

a TCI state associated with the CSI-RS;

a TCI state associated with a control resource set (CORESET) group, wherein the CORESET group is a CORESET group associated with a CSI-RS or a CORESET group used for triggering control signaling transmission of an aperiodic CSI-RS.

Optionally, the physical signal includes a CSI-RS, and the terminal determines, according to the configuration information, one or two TCI states used for transmitting all physical channels and/or physical signals in a time unit, including:

the terminal determines the association relation between the CSI-RS and the CORESET according to the configuration information;

and the terminal determines one or two TCI states used for transmitting the CSI-RS in a time unit according to the incidence relation.

Optionally, the Physical Channel includes a Physical Downlink Control Channel (PDCCH) or a PDSCH, and the one or two TCI states include a TCI state associated with a CORESET group, where the CORESET group is a CORESET group associated with the PDCCH or associated with the PUSCH.

Optionally, the physical channel and/or the physical signal includes a CSI-RS and at least one PDCCH;

the one or two TCI states include:

a combination of TCI states of the at least one PDCCH; and/or

A TCI status of one of the at least one PDCCH.

Optionally, the TCI status of one PDCCH of the at least one PDCCH includes:

TCI status of PDCCH transmitted in a CORESET group associated with CSI-RS.

Optionally, the one or two TCI states determined by the terminal include:

the terminal configures a TCI state according to a Radio Resource Control (RRC) signaling; or

The terminal is according to the TCI state that the Downlink Control Information (DCI) signalling points out; or

The terminal determines the TCI state according to a predefined rule.

Optionally, the TCI status determined by the terminal according to the predefined rule includes:

TCI states of at least two CORESETs detected by the terminal; or

The TCI state of the CORESET with the lowest index in the CORESETs with the search space to be monitored in the two CORESET groups detected by the terminal.

Optionally, the method further includes:

all time units within a scheduling unit have the same one or two TCI states; or

Each time unit in a scheduling unit has one or two TCI states.

Optionally, the time unit includes part or all of the following:

a PDCCH monitoring symbol;

a symbol with a PDSCH scheduling offset less than a first threshold;

a symbol with a PDSCH scheduling offset greater than or equal to a second threshold;

symbols within one scheduling unit other than the PDCCH monitoring symbols.

In a third aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a transceiver;

wherein the processor is configured to read a program in the memory and execute:

determining at least two control resource sets (CORESET or search space sets) to be monitored and having at least two QCL-TypeD characteristics according to first information configured by network side equipment; or the terminal determines at least two CORESET or search space sets with correlation to be monitored according to a control channel transmission pattern configured by the network side equipment;

and monitoring at least two control channels according to the determined at least two CORESETs or search space sets to be monitored.

Optionally, the processor is specifically configured to:

determining at least two to-be-monitored CORESETs with at least two QCL-TypeD characteristics in different CORESET groups according to first information configured by network side equipment; or

Determining at least two to-be-monitored CORESETs with at least two QCL-TypeD characteristics in the same CORESET group according to first information configured by network side equipment;

determining at least two same search space sets with at least two QCL-type characteristics to be monitored in the same CORESET according to first information configured by network side equipment; or

According to the first information configured by the network side equipment, at least two different search space sets with at least two QCL-type characteristics to be monitored in the same CORESET are determined.

Optionally, the at least two determined CORESET to be monitored include:

Optionally, one search space set of the second cell includes:

Optionally, one core set in the first core set includes:

one CORESET of the second set of CORESETs, comprising:

Optionally, the first cell includes:

the cell with the lowest index in the cells containing two different CORESETPoolIndex values; or

All cells in the cell containing two different coresetpoolndex values; or

The network side equipment is a pre-configured cell.

Optionally, the second cell includes:

a cell having the lowest index among cells including the CSS set; or

The cell with the lowest CSS set index or USS set index among all cells; or

The cell with the lowest index among the cells containing the USS set.

Optionally, the association relationship includes:

correlation among CORESET indexes, search space indexes and TCI states of a plurality of time slots; or

Optionally, the processor is specifically configured to:

if the network side equipment does not configure the first information for the terminal, determining a CORESET or a search space set with a QCL-TypeD characteristic; or

And if the network side equipment configures second information for the terminal, determining a CORESET or a search space set with a QCL-type D characteristic, wherein the second information is used for indicating the terminal to monitor the CORESET or the search space set with the QCL-type D characteristic.

Optionally, if the network side device configures the second information for the terminal, the processor is specifically configured to:

determining a CORESET or set of search spaces having a QCL-type characteristic based on some or all of the following information:

a cell index;

CORESET group information;

the spatial index is searched.

Optionally, the control channel transmission pattern includes:

In a fourth aspect, an embodiment of the present invention provides another terminal, including a processor, a memory, and a transceiver;

determining configuration information configured by the network side equipment and used for determining the TCI state;

and determining one or two TCI states used for transmitting all physical channels and/or physical signals in one time unit according to the configuration information, wherein the TCI state of each physical channel or physical signal is at least one of the one or two TCI states.

Optionally, the physical signal includes CSI-RS, and the one or two TCI states include some or all of:

a TCI state associated with the CSI-RS;

Optionally, the physical channel includes a PDCCH or a PDSCH, and the one or two TCI states include a TCI state associated with a CORESET group, where the CORESET group is the CORESET group associated with the PDCCH or the PUSCH.

Optionally, the physical signal includes a CSI-RS, and the processor is specifically configured to:

determining the association relation between the CSI-RS and the CORESET according to the configuration information;

and determining one or two TCI states used for transmitting the CSI-RS in one time unit according to the association relation.

the one or two TCI states include:

a combination of TCI states of the at least one PDCCH; and/or

A TCI status of one of the at least one PDCCH.

Optionally, the TCI status of one PDCCH of the at least one PDCCH includes:

TCI status of PDCCH transmitted in a CORESET group associated with CSI-RS.

Optionally, the one or two TCI states determined by the terminal include:

the terminal configures a TCI state according to RRC signaling; or

The terminal indicates the TCI state according to the DCI signaling; or

The terminal determines the TCI state according to a predefined rule.

Optionally, the TCI status determined according to the predefined rule includes:

the detected TCI states of at least two CORESETs; or

The TCI state of the CORESET with the lowest index among the CORESETs having the search space to be monitored within the two detected CORESETs.

Optionally, all time units in one scheduling unit have the same one or two TCI states; or

Each time unit in a scheduling unit has one or two TCI states.

Optionally, the time unit includes part or all of the following:

a PDCCH monitoring symbol;

a symbol with a PDSCH scheduling offset less than a first threshold;

symbols within one scheduling unit other than the PDCCH monitoring symbols.

In a fifth aspect, an embodiment of the present invention provides an apparatus for monitoring a control channel, where the apparatus includes:

the device comprises a first determining module, a second determining module and a monitoring module, wherein the first determining module is used for determining at least two control resource sets (CORESET) or search space sets which are to be monitored and have at least two QCL-type characteristics according to first information configured by network side equipment; or the terminal determines at least two CORESETs to be monitored and having an association relation according to a control channel transmission pattern configured by the network side equipment;

and the monitoring module is used for monitoring at least two control channels according to the determined at least two CORESET or search space sets to be monitored.

In a sixth aspect, an embodiment of the present invention provides an apparatus for determining a transmission configuration indication, where the apparatus includes:

the second determining module is used for determining configuration information which is configured by the network side equipment and used for determining the TCI state;

and a third determining module, configured to determine, according to the configuration information, one or two TCI states used for transmitting all physical channels and/or physical signals in one time unit, where a TCI state of each physical channel or physical signal is at least one of the one or two TCI states.

In a seventh aspect, an embodiment of the present invention provides a computer storage medium, having stored therein computer program instructions, which, when run on a computer, cause the computer to perform the method according to any one of the above first aspects, or the method according to any one of the above second aspects.

On one hand, according to the first information configured by the network side device, the terminal determines at least two to-be-monitored CORESETs having at least two QCL-type characteristics, or determines at least two to-be-monitored CORESETs or search space sets having an association relationship according to a control channel transmission pattern configured by the network side device, and the terminal monitors at least two control channels according to the determined at least two to-be-monitored CORESETs or search space sets. Because at least two CORESET or search space sets to be monitored, which are determined by the terminal, have at least two QCL-type characteristics or have an association relationship, the CORESET or search space sets monitored by the terminal have different QCL-type characteristics, so that the terminal can receive control channels sent by a plurality of transmission points on the same symbol, the waste of resources is reduced, and the system performance is further improved. On the other hand, the terminal firstly determines configuration information configured by the network side equipment and used for determining the TCI state, and then determines one or two TCI states used for transmitting all physical channels and/or physical signals in a time unit according to the configuration information, wherein the TCI state of each physical channel or physical signal is at least one of the one or two TCI states. The terminal determines one or two TCI states, so that the receiving capability of the terminal can not be exceeded, the condition that the terminal cannot effectively receive a physical channel and/or a physical signal is avoided, the resource waste is further reduced, and the system performance is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a flowchart of a method for monitoring a control channel according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for determining a transmission configuration indication according to an embodiment of the present invention;

fig. 3 is one of schematic diagrams illustrating that a PDCCH and a CSI-RS are overlapped on one symbol according to an embodiment of the present invention;

fig. 4 is one of schematic diagrams illustrating that a PDCCH and a CSI-RS are overlapped on one symbol according to an embodiment of the present invention;

fig. 5 is one of schematic diagrams illustrating that a PDCCH and a CSI-RS provided by an embodiment of the present invention overlap on one symbol;

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

fig. 7 is a schematic structural diagram of a second terminal according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an apparatus for monitoring a control channel according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an apparatus for determining a transmission configuration indication according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present disclosure better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Some terms appearing herein are explained below:

1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

2. A terminal, also called a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

3. The Network side device may be a RAN (Radio Access Network) node or a base station. The RAN is the part of the network that accesses the terminal to the wireless network. A RAN node (or device) is a node (or device) in a radio access network, which may also be referred to as a base station. Currently, some examples of RAN nodes are: a 5G base station (gbb), a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In addition, in one network configuration, the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node.

The network architecture and the service scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by those skilled in the art that the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

In the NR system, multiple serving cells or the same serving cell may transmit multiple pieces of downlink control information to a terminal at the same time on one symbol. Due to the limited receiving capability of the terminal, if only one receiving antenna array is provided, only one spatial filter can be used for receiving on the same symbol. In this regard, the protocol specifies the behavior of the terminal monitoring the PDCCH: within the same monitoring occasion, the terminal monitors the PDCCH only in one CORESET satisfying a specific condition and in CORESETs having the same QCL-type characteristic as the CORESET.

One CORESET satisfying specific conditions here refers to: and if the serving cell contains the CSS set, the CORESET is the CORESET corresponding to the CSS set with the lowest CSS set index in the cell with the lowest cell index in the CSS set, otherwise, the CORESET is the CORESET corresponding to the USS set with the lowest USS set index in the cell with the lowest cell index.

In this way, the network device side only transmits the PDCCH in the CORESET that the terminal can monitor, and does not transmit the PDCCH in the CORESET that the terminal cannot monitor (for example, the CORESET having different QCL-type characteristics from the CORESET satisfying the specific condition).

When the network device side has multiple transmission points, the multiple transmission points may independently transmit respective PDCCHs in different CORESET groups (all CORESETs are divided into two groups according to the configuration of the higher layer parameter coresetpoilndex, each group corresponds to one transmission point) for scheduling respective PDSCHs, and generally, the CORESETs configured by the multiple transmission points or the transmitted PDCCHs have different QCL-type characteristics.

For a terminal having multiple receive antenna arrays, it is capable of simultaneously receiving two or more PDCCHs having different QCL-type characteristics. If the terminal is still restricted to monitor only the CORESET with one QCL-type characteristic on one symbol, on one hand, scheduling flexibility of multiple transmission points of the network side device is restricted, for example, multiple transmission points need to transmit PDCCH for the same terminal on different symbols. On the other hand, for a terminal with multiple antenna arrays, the PDCCH which can only receive one QCL-type characteristic signal on one symbol may not exert the advantages of the multiple antenna arrays of the terminal, waste resources, and reduce system performance.

Based on the above problem, as shown in fig. 1, an embodiment of the present invention provides a method for monitoring a control channel, where the method includes:

s101, a terminal determines at least two control resource sets (CORESET or Search Space sets (SS sets) with at least two QCL-type characteristics to be monitored according to first information configured by network side equipment; or the terminal determines at least two CORESET or search space sets with correlation to be monitored according to a control channel transmission pattern configured by the network side equipment;

and S102, the terminal monitors at least two control channels according to the determined at least two CORESET or search space sets to be monitored.

The terminal determines at least two CORESET or search space sets to be monitored with at least two QCL-type characteristics according to first information configured by network side equipment, or determines at least two CORESET or search space sets to be monitored with an association relation according to a control channel transmission pattern configured by the network side equipment, and monitors at least two control channels according to the determined at least two CORESET or search space sets to be monitored. The terminal determines at least two CORESET or search space sets to be monitored with at least two QCL-type characteristics or CORESET or search space sets with an incidence relation, so that the CORESET or search space sets monitored by the terminal can correspond to different transmission points, the terminal can receive control channels sent by a plurality of transmission points on the same symbol, the waste of resources is reduced, and the system performance is further improved.

In addition, according to the control channel monitoring method determined by the invention, the network side equipment and the terminal have the same understanding on the CORESET to be monitored, so that the network equipment side can only send the control channel in the CORESET to be monitored, transmission resources are saved, correspondingly, the terminal can only monitor the control channel in the determined CORESET, monitoring in the CORESET in which the network side equipment does not transmit the control channel is avoided, and the control channel is ensured to be monitored within the specified blind detection times.

Because the terminal can receive the control signals sent by a plurality of transmission points on the same symbol, the scheduling flexibility of the plurality of transmission points of the network side equipment can be improved, and meanwhile, when the terminal has a plurality of antenna array surfaces, a plurality of antenna array surfaces of the terminal can be effectively utilized.

The terminal in the embodiment of the present invention may be configured with one receiving antenna array, or may be configured with a plurality of receiving antenna arrays. If the terminal is configured with multiple receive antenna fronts, the terminal may monitor the CORESET or set of search spaces having two or more QCL-type characteristics.

In the embodiment of the invention, the terminal firstly determines at least two CORESET or search space sets to be monitored, and then monitors at least two control channels according to the determined at least two CORESET or search space sets to be monitored.

The terminal determines that at least two CORESET or search space sets to be monitored have two modes, wherein the mode I is that the terminal determines at least two control resource sets to be monitored, which have at least two QCL-type characteristics, or search space sets according to first information configured by network side equipment; and secondly, the terminal determines at least two CORESETs to be monitored and having an association relation according to a control channel transmission pattern configured by the network side equipment.

Wherein the first information in the first mode is used for instructing the terminal to monitor the CORESET or the search space set with at least two QCL-TypeD characteristics.

In implementation, the terminal determines at least two to-be-monitored CORESETs with at least two QCL-type characteristics according to the first information configured by the network-side device, and the terminal may determine at least two to-be-monitored CORESETs with at least two QCL-type characteristics in different CORESET groups according to the first information configured by the network-side device, and may also determine at least two to-be-monitored CORESETs with at least two QCL-type characteristics in the same CORESET group.

It should be noted that the CORESET herein may include a plurality of CORESETs having the same high-level parameter configuration.

In implementation, the terminal determines at least two search space sets to be monitored, which have at least two QCL-type characteristics, according to the first information configured by the network-side device, where the search space sets may be the same or different.

The first information in the embodiment of the present invention may include Radio Resource Control (RRC) signaling and/or Media Access Control Element (MAC CE) signaling, where the RRC signaling and/or the MAC CE signaling are used to indicate a CORESET or a search space set that may be monitored.

Specifically, the configuration can be performed in the following three ways:

the first method is as follows: a new RRC parameter is introduced outside the CORESET configuration or outside the search space set configuration (e.g. PDCCH-Config) to indicate the index of the CORESET or indexes that each BWP or each CC or CCs can monitor. For example, when indicating in units of CC, the CORESET index may be an absolute index (e.g., from 0 to 11 or from 0 to 15); for example, when indicating in units of BWP, the CORESET index may be the relative index, i.e., the CORESET with the lowest and next lowest index for the current BWP; the method of indicating the search space set index is also similar. For another example, when there are a plurality of CCs, updating is performed in units of CC list (list) configured by the higher layer parameters (for example, the existing higher layer parameters simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2 may be reused, as shown in the following configuration);

a Transmission Point (TRP) list may also be newly configured, where TRPs (indexed by CORESET or search space set or characterized by resources) in the same list have the same TCI state, and may also be CORESET list or search space set list, and when it is indicated that one of CORESET or search space set may be monitored, other CORESET or search space set in the list may also be monitored. The method is also applicable to the second mode.

The second method comprises the following steps:

under the existing CORESET configuration (high-level parameter ControlResourceSet) or the search space set configuration (high-level parameter SearchSpace), a new RRC parameter is introduced to indicate whether the CORESET or the search space set is monitored. For example, a high level parameter of 0 indicates that it may not be monitored, and a parameter of 1 indicates that it may be monitored; or a high level parameter of 1 indicates that it cannot be monitored, and a high level parameter of 0 indicates that it can be monitored.

The third method comprises the following steps:

on the basis of the first mode and the second mode, MAC CE signaling can be used for updating the monitored CORESET or the search space set. Reference may be made to the implementation of the first mode and the second mode, which are not described herein again.

If the above RRC parameters are not configured, the terminal may determine the set of CORESET or search spaces that can be monitored using a predefined manner. The predefined manner is the manner in which the CORESET or the set of search spaces is determined in the embodiments described below.

In the embodiment of the invention, a terminal determines at least two CORESET and search space sets which are to be monitored and have an association relation according to a transmission mode of a control channel configured by network side equipment, wherein the transmission mode of the control channel can be that the control channel is repeatedly transmitted in time slots, and the search space of each time slot is the same or the CORESET is the same; the control channel can be repeatedly transmitted in the CORESET, and the CORESET has at least one TCI state; the transmission of the control channel may also be repeated for CORESET within a slot or between slots, and the offset between CORESET and search space is a fixed value.

It should be noted that the repeated transmission of the control channel is to transmit two control channels, for example, one control channel per search space.

The association relationship in the embodiment of the present invention may be an association relationship among a CORESET index, a search space index and a TCI state among CORESETs of multiple time slots; or may be an association relationship among the CORESET indexes, the search space indexes and the TCI states among multiple CORESETs of the same time slot.

In specific implementation, the terminal receives and monitors the CORESET at the same monitoring time according to the determined correlation of the CORESET or the search space; or

After monitoring the CORESET at a monitoring time, the terminal determines other CORESETs to be monitored according to the determined correlation of the CORESET or the search space and carries out receiving monitoring.

After monitoring the control channel in one CORESET, the terminal can continue to monitor in the associated CORESET according to the association relation, thereby reducing the monitoring range and saving resources.

In an implementation, the at least two CORESET to be monitored determined by the terminal may include one CORESET in the first CORESET of the first cell and one CORESET in the second CORESET of the first cell; may be the CORESET corresponding to the search space set of the second cell and one CORESET of the first cell, where the search space set is the search space set with the lowest search space set index in the second cell; it may also be that the plurality of search space sets with the lowest index correspond to at least two CORESETs having different QCL-TypeD characteristics; the search space set index value may be a search space set index value of a search space set of the first cell, and a search space set index value of a search space set of the second cell; the search space set of the fourth cell may also be a CORESET in which one search space set of the fourth cell is located and a CORESET in which one search space set of the fifth cell is located, where one search space set of the fourth cell is a search space set having a lowest cell index and/or search space set index value among search space sets having an association relationship; one search space set of the fifth cell is the search space set associated with the search space set of the fourth cell or the search space set with lower cell index and/or search space set index values.

One of the first set of CORESET may be a CORESET corresponding to the USS set or the CSS set having the lowest search engine in the search space set associated with the first set of CORESET of the first cell; one of the second set of CORESET above may be the CORESET corresponding to the USS set or CSS set having the lowest index in the search space associated with the second set of CORESET of the first cell.

The third cell in the above description may also be the second cell, and the search space set of the second cell may be a search space set with the lowest index in the USS or CSS of the second cell, or a search space set with the lowest index in the search space sets with the association relationship. For example, first, one search space set (SS set a) is determined according to the index value and/or type (CSS set or USS set) of the search space set in the second cell or the fourth cell, and if there are other search space sets (e.g., SS set B) associated therewith, for example, 2 search space sets are commonly used for PDCCH repeated transmission, it is determined that the search space set (SS set B) associated therewith or the CORESET (e.g., CORESET B) in which it is located are also used for monitoring; if no other search space set is associated with it, it can be seen whether there are other SS sets having an association relationship within the CORESET (e.g., CORESET a) in which SS set a is located, and if there are, e.g., SS set i and SS set j, another CORESET or SS set to be monitored is determined according to the other SS sets (e.g., SS sets having lower index values among the other SS sets). If no SS set has an association, another CORESET or search space set to be monitored is still determined in terms of cell or CORESET or search space index values.

For another example, a search space set is determined according to the association relationship and/or the type (CSS set or USS set), for example, a search space set with the lowest cell or CORESET or search space set index is selected from the CSS set or USS set having the association relationship, and then the search space set associated therewith or the CORESET where the search space set is located is determined to be also used for monitoring; for another example, if 2 associated search space sets are in the same CORESET, another CORESET or search space set that can be monitored can be determined according to the cell or search space set or the index value of the CORESET, that is, 2 CORESETs or search space sets with different QCL-type parameters are determined for monitoring. The CORESET or set of search spaces to be monitored may also be determined using a combination of the above methods.

Lower in the above is lower than lowest, such as second lowest.

When the network device configures SS set association relationship for the terminal and configures a high-level parameter, CORESET, for the CORESET, a predefined rule needs to be defined to determine which CORESET or search space set can be monitored, for example, first determine the CORESET or search space set to be monitored according to the condition of configuring the CORESET, or first determine the CORESET or search space set to be monitored according to the association relationship. Similarly, if the network device configures the terminal to perform Single Frequency Network (SFN) transmission, one CORESET may have 2 different QCL-type parameters, and the association relationship of the SS set is configured at the same time, a determination sequence also needs to be defined, for example, first selecting the CORESET or the search space set with 2 QCL-type parameters for monitoring. The SFN, the association relationship, and the coresetpoilndex are configured similarly, and a sequence needs to be predefined to prevent the network side device and the terminal from having different understanding, which further causes the two devices to determine different CORESETs for transmission/monitoring and causes transmission failure.

In implementation, the first cell may include a cell with the lowest index among two different coresetpoilndex-valued cells; the cell with the highest index in the cells which can contain two different CORESETPoolIndex values; all cells in the cells that can contain two different coresetpoolndex values; or a cell pre-configured by the network side device.

In an implementation, the second cell may include a cell having a lowest index among cells including the CSS set; may include a cell having the lowest CSS set index or USS set index among all cells; it may also include the cell with the lowest index among the cells containing the USS set.

In addition to the above description of the terminal determining the CORESET or the set of search spaces having at least two QCL-type characteristics, the terminal may also determine the CORESET or the set of search spaces having one QCL-type characteristic.

Specifically, if the network side device does not configure the first information for the terminal, the terminal determines a CORESET or a search space set having a QCL-type characteristic; and if the network side equipment configures second information for the terminal, the terminal determines the CORESET or the search space set with one QCL-type characteristic, wherein the second information is used for indicating the terminal to monitor the CORESET or the search space set with one QCL-type characteristic.

When the terminal determines a CORESET or a search space set with a QCL-type characteristic, the terminal may determine the CORESET or the search space set with a QCL-type characteristic according to at least one of the following information:

a cell index;

CORESET group information;

the spatial index is searched.

It should be noted that, in the embodiment of the present invention, the determined CORESET or the search space set is all the CORESET or the search space set to be monitored, that is, when the CORESET or the search space set to be monitored is determined, the CORESET or the search space set to be monitored is determined. Thus, in embodiments having the lowest or next lowest or lower CORESET index, cell index, or search space set index, all refer to the CORESET, cell, or search space set having the lowest or next lowest or lower CORESET, cell, or search space set to be monitored.

In the nr (new radio) system, when a plurality of physical channels or physical signals are multiplexed and transmitted on the same symbol, the transmission priority or TCI status of each physical channel or physical signal is specified in the protocol, so that the terminal receives only one physical channel or physical signal on one symbol, or the received physical channels or physical signals have the same TCI status. For example, when a PDCCH (physical downlink control channel) and a PDSCH are transmitted on the same symbol and have different TCI states, the terminal preferentially receives the PDCCH. For another example, when a PDCCH and a CSI-RS (channel state information reference signal) are transmitted on one symbol, the terminal may expect the CSI-RS and the DMRS (demodulation reference signal) of the PDCCH to be related to a 'QCL-type' parameter QCL.

After introducing multi-transmission point transmission, the receiving capability of the terminal is also enhanced, and for a terminal with two or more receiving fronts, multiple transmission points can also transmit multiple physical channels or physical signals with different QCL-type characteristics on the same symbol to improve the system performance, such as multiple PDCCHs, two PDSCHs, or two CSI-RSs. However, when different physical channels or physical signals are multiplexed in the time domain, transmission of physical channels or physical signals greater than two QCL-type characteristics may occur on one symbol, e.g., multiple PDCCHs and two PDSCHs are transmitted on the same symbol. This will cause the terminal not to receive all the physical channels or physical signals sent by the network device side, which will cause performance loss, and also cause unnecessary power and resource consumption at the network device side.

Based on the above problem, as shown in fig. 2, an embodiment of the present invention provides a method for determining a transmission configuration indication, where the method includes:

s201, a terminal determines configuration information configured by network side equipment and used for determining a TCI state;

s202, the terminal determines one or two TCI states used for transmitting all physical channels and/or physical signals in a time unit according to the configuration information, wherein the TCI state of each physical channel or physical signal is at least one of the one or two TCI states.

In the embodiment of the invention, a terminal firstly determines configuration information configured by network side equipment and used for determining the TCI state, and then determines one or two TCI states used for transmitting all physical channels and/or physical signals in a time unit according to the configuration information, wherein the TCI state of each physical channel or physical signal is at least one of the one or two TCI states. The terminal determines one or two TCI states, so that the receiving capability of the terminal can not be exceeded, the condition that the terminal cannot effectively receive a physical channel and/or a physical signal is avoided, the resource waste is further reduced, and the system performance is improved.

In an optional embodiment, if the physical signal includes CSI-RS, the terminal determines, according to the configuration information, one or two TCI states used for transmitting all physical channels and/or physical signals in one time unit, including some or all of the following:

a TCI state associated with the CSI-RS;

a TCI state associated with a control resource set (CORESET) group, wherein the CORESET group is a CORESET group associated with the CSI-RS or a CORESET group used for triggering control signaling transmission of the aperiodic CSI-RS.

In an optional implementation manner, if the physical signal includes a CSI-RS, the terminal may determine an association relationship between the CSI-RS and the CORESET according to the configuration information;

In another optional embodiment, if the physical channel comprises PDCCH or PDSCH, the one or two TCI states comprise a TCI state associated with a CORESET, wherein a CORESET group is a CORESET group associated with the PDCCH or associated with the PUSCH.

In another optional embodiment, the physical channel and/or the physical signal includes a CSI-RS and at least one PDCCH, and the one or two TCI states determined by the terminal include a combination of TCI states of the at least one PDCCH; and/or a TCI status of one of the at least one PDCCH.

In an implementation, the TCI status of one of the at least one PDCCH may be a TCI status of a PDCCH transmitted in a CORESET associated with the CSI-RS.

In the embodiment of the invention, the terminal determines one or two TCI states, can configure the TCI state for the terminal according to RRC signaling, and can configure the TCI state for the terminal according to DCI signaling; it is also possible to determine the TCI status for the terminal according to predefined rules.

The TCI state determined by the terminal according to the predefined rule may be the TCI states of at least two CORESETs monitored by the terminal, or the TCI state of the CORESET with the lowest index among the CORESETs having the search space to be monitored in the two CORESETs monitored by the terminal.

In implementations, all time units within a schedule unit have the same one or two TCI states, or each time unit within a schedule unit has a respective one or two TCI states.

The time unit in the embodiment of the present invention may be a PDCCH monitoring symbol; may be a symbol with a PDSCH scheduling offset less than a first threshold; may be a symbol with a PDSCH scheduling offset greater than or equal to a second threshold; but also symbols within one scheduling unit other than PDCCH monitoring symbols.

It should be noted here that the first threshold and the second threshold may be the same or different.

For ease of understanding, the present invention is described below in terms of specific examples.

Example 1:

if the terminal is configured with multiple receive antenna fronts, the terminal may monitor CORESET with two or more QCL-type characteristics, where CORESET with two or more QCL-type characteristics may be two CORESETs in one cell containing two different coresetpoilinidex values.

For example, the two CORESET may be from a first CORESET and a second CORESET, respectively, of a first cell of the cells containing two different coresetpoilndex values.

In this embodiment of the present invention, the first set of CORESET may be used to represent a set composed of CORESETs with a higher-layer parameter coresetpoilndex configured as 0 or without a higher-layer parameter coresetpoilndex configured as 1, and the second set of CORESET may be used to represent a set composed of CORESETs with a higher-layer parameter coresetpoilndex configured as 1.

Specifically, the first cell may be a cell with the lowest index in cells including two different coresetpoilndex values, may be a cell with the highest index in cells including two different coresetpoilndex values, and may also be a cell configured in advance by the network side.

Two CORESETs in a cell containing two different CORESET poolndex values may be CORESETs corresponding to the USS set or CSS set with the lowest index in the search space set associated with or corresponding to the first CORESET of the first cell, and CORESETs corresponding to the USS set or CSS set with the lowest index in the search space set associated with or corresponding to the second CORESET of the first cell.

In the configuration of the search space sets, each search space set configures a CORESET associated with or corresponding to the search space set, which means that the search space set is in the CORESET associated with or corresponding to the search space set.

Accordingly, one CORESET may associate multiple search space sets, e.g., as shown in the following table, search space set 4 is associated with CORESET2, and CORESET2 is associated with search space set 4 and search space set 5.

The set of search spaces associated with the first set of CORESET is comprised of search spaces associated with CORESETs in the first set of CORESET. Taking the above table as an example, the search spaces associated with all the CORESET in the first CORESET are search space 1, search space 2, and search space 3, so the set of search spaces associated with the first CORESET is { search space 1, search space 2, search space 3 }; the search spaces associated with the second set of CORESET are search space 4, search space 5, and search space 6, so the set of search spaces associated with the second set of CORESET is { search space 4, search space 5, search space 6 }.

The two CORESET monitoring are respectively associated with two transmission points in a cell, so that the two CORESET selected have different QCL-type characteristics, and the characteristics of multiple receiving fronts of the terminal can be utilized to the maximum. In addition, in a Carrier Aggregation (CA) scenario, especially in an intra-band (intra-band) CA, spatial transmission characteristics of a plurality of Carrier Components (CCs) are very similar, and the QCL-type characteristic of one cell can also represent the QCL-type characteristics of other cells to some extent.

Example 2:

if the terminal is configured with multiple receive antenna fronts, the terminal may monitor CORESET with two or more QCL-type characteristics, where CORESET with two or more QCL-type characteristics may be: one CORESET of the cell with the lowest index (hereinafter second cell) and one CORESET of the first cell.

The second cell may be a cell having the lowest index among cells including the CSS set, may be a cell having the lowest index among all cells, and may be a cell having the lowest index among cells including the USS set. The second cell may be a primary cell (PCell) in a CA scenario.

One core set of the second cell may be a core set corresponding to the USS set having the lowest USS set index in the second cell, or may be a core set corresponding to the CSS set having the lowest CSS set index in the second cell.

The one core set of the first cell may be one core set of the first cell, and may also be one core set of the second core set. The first cell may be a cell having a lowest index among cells including two different coresetpoilndex values, a cell having a highest index among cells including two different coresetpoilndex values, all cells including two different coresetpoilndex values, or a cell configured in advance on the network device side.

The first cell and the second cell differ here by: the first Cell represents one of cells having a plurality of transmission points, and the second Cell is a Cell having the lowest search space set, corresponding to a PCell and a PSCell (Primary Secondary Cell group) in a CA and DC (dual connectivity) scenario.

For example, when all the CORESETs in the second cell do not configure the high-layer parameter coresetpoilndex, or the values of the high-layer parameter coresetpoilndex are all 0, the CORESET of the first cell may be the CORESET corresponding to the USS set or the CSS set having the lowest index in the search space associated with or corresponding to the second CORESET of the first cell. This ensures that the two selected CORESET are respectively associated with different transmission points, and ensures that the two selected CORESET have different QCL-type characteristics, thereby maximizing the utilization of the characteristics of the multiple reception fronts of the terminal.

For another example, when the values of the high-level parameter coresetpoilndex of all CORESETs in the second cell are all 1, the CORESETs of the first cell may be CORESETs corresponding to the USS set or the CSS set having the lowest index in the search space associated with the first CORESET of the first cell. This ensures that the two selected CORESET are respectively associated with different transmission points, and ensures that the two selected CORESET have different QCL-type characteristics, thereby maximizing the utilization of the characteristics of the multiple reception fronts of the terminal.

For another example, when the value of the high-level parameter CORESET poilndex of the CORESET in the second cell is both 0 and 1, the second cell and the first cell are the same cell, and at this time, one CORESET of the first cell may be a CORESET in a different CORESET from one CORESET of the second cell. For example, the terminal monitors the CORESET corresponding to the USS set or CSS set with the lowest index in the search space associated with or corresponding to the first set of CORESET of the second cell (i.e., the first cell), and the CORESET corresponding to the USS set or CSS set with the lowest index in the search space associated with or corresponding to the second set of CORESET of the first cell (i.e., the second cell). This ensures that the two selected CORESET are respectively associated with different transmission points, and ensures that the two selected CORESET have different QCL-type characteristics, thereby maximizing the utilization of the characteristics of the multiple reception fronts of the terminal.

Example 3:

if the terminal is configured with multiple receive antenna fronts, the terminal may monitor CORESET with two or more QCL-type characteristics. The CORESET having two or more QCL-type characteristics herein may be: the N search space sets (e.g., N USS sets, or N CSS sets, or N1 USS sets and N2 CSS sets, where N1+ N2 ═ N) with the lowest index correspond to at least two CORESETs with different QCL-typeD characteristics.

The value of N depends on the QCL-type characteristic of the search space, e.g., if the set of search spaces with the lowest index and the CORESET with the next lowest set of search spaces are the same or have the same QCL-type characteristic, then another set of search spaces with a lower index may be considered until two CORESETs with different QCL-type characteristics are determined, and thus the value of N may be greater than 2.

Further, the N search space sets with the lowest index may be the N search space sets with the lowest index among all cells, and may also be the N search space sets with the lowest index in one cell (e.g., the first cell, the second cell, etc.).

In this way, even if the control channel higher layer configuration PDCCH-Config of all cells only contains one coresetpoilndex value, i.e. is associated with one transmission point, it can be ensured that two selected CORESET have different QCL-type characteristics, and the characteristics of multiple reception fronts of the terminal can be maximally utilized compared to receiving CORESET with only one QCL-type characteristic.

Example 4:

the terminal can only monitor CORESET with one QCL-type characteristic if the terminal is configured with one receive antenna array. The effect of the multiple transmission points (e.g., the effect of the higher layer parameter coresetpoilndex) is taken into account when determining the CORESET to be monitored.

For example, the terminal may monitor one of the cells (e.g., the second cell) having the lowest index among the cells including the CSS set or the USS set, which may be one of the first set of CORESET (configured without the higher layer parameter coresetpoilndex, or configured as a set of CORESET with the higher layer parameter coresetpoilndex configured as 0) in the second cell. Specifically, the terminal monitors the CORESET corresponding to the USS set or CSS set having the lowest index in the search space associated with or corresponding to the first CORESET of the second cell. Similarly, the terminal may preferentially monitor the second cell for the CORESET corresponding to the USS set or CSS set with the lowest index in the search space associated with or corresponding to the second CORESET.

For another example, the terminal may monitor one CORESET of one of the cells containing two different coresetpoilndex values. For example one CORESET of the first cell. Specifically, the terminal monitors the CORESET corresponding to the USS set or CSS set having the lowest index in the search space associated with or corresponding to the first CORESET of the first cell. Similarly, the terminal may preferentially monitor the CORESET corresponding to the USS set or the CSS set having the lowest index in the search space of the first cell associated with or corresponding to the second CORESET.

When the cell includes a plurality of transmission points, the control channel transmitted by one transmission point can be preferentially received, so that the network equipment side can send out important control information through one transmission point. In addition, in a Carrier Aggregation (CA) scenario, especially in an intra-band (intra-band) CA, spatial transmission characteristics of a plurality of Carrier Components (CCs) are very similar, and the QCL-type characteristic of one cell can also represent the QCL-type characteristics of other cells to some extent.

Example 5:

if the terminal is configured with more than two receive antenna arrays, the terminal may monitor CORESET with more than two QCL-type characteristics.

In determining the CORESET to be monitored, the CORESET having two QCL-type characteristics may be determined first, and then the CORESET having the other QCL-type characteristics may be determined according to the methods of example 1 and example 2.

For example, in the set of unmonitored search spaces, the set of search spaces with the lowest index is selected to see if the associated or corresponding CORESET of the set of search spaces has a different QCL-TypeD characteristic than the two CORESETs that have been selected. If the QCL-Typed characteristics are different, the CORESET is taken as the CORESET with the third QCL-Typed characteristic, and the CORESET and the associated or corresponding search space set are monitored. Otherwise, the CORESET and the associated or corresponding search space sets are still monitored, and the search space set with the lowest index is continuously found in the unmonitored search space sets, and whether the associated or corresponding search space sets have different QCL-type characteristics is judged until three or more CORESETs with different QCL-type characteristics are determined.

Also for example, the core set having the third QCL-type characteristic may be one core set of the first core set or the second core set in one cell. The specific determination method may be that, in a search space set associated with or corresponding to the first core set or the second core set of a cell, the search space sets are sorted according to the index of the search space set until a core set having the third QCL-type characteristic is determined.

A method similar to that of example 3 may also be employed. For example, the terminal monitors at least 3 CORESET having different QCL-typeD characteristics corresponding to M search space sets (e.g., M USS sets, or M CSS sets, or M1 USS sets and M2 CSS sets, M1+ M2 ═ M) having the lowest index of one cell. The value of M depends on the QCL-type characteristic of the search space, e.g., if the set of search spaces with the lowest index and the CORESET with the next lowest set of search spaces are the same or have the same QCL-type characteristic, another set of search spaces with a lower index may be considered until at least three CORESETs with different QCL-type characteristics are determined, and thus the value of M may be greater than 3.

Example 6:

the terminal is configured with a plurality of receiving antenna array planes, which can be some related capability reported to the network side equipment by the terminal or some high-level parameter configured to the terminal by the network side equipment.

For example, a terminal may implicitly indicate that the terminal has multiple receive antenna fronts by reporting the following capabilities: the ability to receive overlapping PDSCHs in the time domain, or have group-based reporting capability, etc.

For another example, after the network side device receives the capability report of the terminal, the network side device may configure a certain high-level parameter according to a service or a network deployment situation, and instruct the terminal to monitor a control channel monitoring behavior, that is, instruct the terminal to monitor a CORESET having two different QCL-type characteristics, or a CORESET having one QCL-type characteristic, that is, indirectly instruct the terminal to receive using multiple receive antenna arrays or a single receive array. Therefore, the terminal can be prevented from always using a plurality of receiving fronts for receiving, and especially when the network side equipment only transmits the control channel with one QCL-type characteristic, the power consumption of the terminal can be reduced or the maximum capability of the terminal can be exerted.

When the terminal reports a certain capability to the network side device, or the network side device configures a certain high-level parameter (first information), the terminal monitors CORESET having two or more QCL-type characteristics, for example, according to the methods of embodiments 1,2,3, and 5. When this higher layer parameter is not configured, the terminal monitors CORESET with a QCL-type characteristic, for example using the rules of the existing protocol, or the rules of example 4.

For another example, when the network-side device configures the second information, the terminal may use the rule in embodiment 4 to monitor the CORESET having one QCL-type characteristic, otherwise, the terminal uses the rule in the existing protocol to monitor the CORESET having one QCL-type characteristic.

Example 7:

when multiple transmission points are used for transmission, the number of each physical channel or physical signal may be greater than 1, and there are various cases where each physical channel or physical signal is multiplexed in the time domain, for example, multiple PDCCHs and two PDSCHs are multiplexed on one symbol, multiple PDCCHs and multiple CSI-RSs are multiplexed on one symbol, two PDSCHs and multiple CSI-RSs are multiplexed on one symbol, multiple CSI-RSs with different time domain transmission characteristics are multiplexed on one symbol, and the like. In each case, the number of TCI states, the number of QCL-type parameters of the reference signal, and thus the number of beams, on one time domain symbol may be greater than two. However, the number of receiving antenna arrays of a general terminal is 2, and all physical channels or physical signals cannot be received correctly at the same time.

One approach is to define the maximum number of TCI states for all physical channels or physical signals on a time domain symbol, i.e. to 2 TCI states. I.e. two TCI states are defined for all physical channels or physical signals, so that the number of TCI states on one time domain symbol does not exceed the reception capability of the terminal.

The specific method comprises the following steps: the two TCI states may be network device side configured or indicated, or may be predefined. The TCI state for each physical channel or physical signal is the two TCI states.

Within a scheduling unit, the two TCI states may be the same or different across all slots or symbols.

When the two TCI states are the same across all slots or symbols, only two TCI states need to be configured or predefined. The combination of the two TCI states is explained below.

The two TCI state combinations may be predefined two TCI states. For example, the TCI status of two CORESET monitored by the terminal, the TCI status of the CORESET actually carrying the PDCCH, two default TCI statuses for the PDSCH when the scheduling offset is smaller than the threshold (the TCI status of the CORESET with the lowest index among the CORESETs having the search space to be monitored among the two CORESET groups), and the like.

The two TCI state combinations may be two common TCI states of the RRC signaling configuration, which apply to the reception of all physical channels or physical signals within the time frame of their action.

The two TCI status combinations may be the TCI status indicated by the DCI signaling, reusing the DCI field indicated by the PDSCH TCI status to indicate the TCI status of all physical channels or physical signals. The indicated TCI status in one DCI may act on a physical channel or physical signal of the next scheduling unit.

When the two TCI states on all time slots or symbols are different, in one scheduling unit, two TCI states on each time unit need to be defined, for example, two TCI states are used in a control region (time domain resources occupied by CORESET determined by a search space set, for PDSCH mapping type a, may be the first 1-3 symbols of one time slot, for PDSCH mapping type B, may be monitoring symbols configured by higher layer signaling symbols symbol within slot) for transmitting PDCCH, and the other two TCI states are used in other symbols outside the PDCCH control region.

The two TCI states used at each time unit may be one of the above two TCI state combinations. For example, the two TCI states used in the control region may be two predefined TCI states, and the two TCI states used by the symbols outside the control region may be two TCI states configured by RRC signaling, or two TCI states indicated by DCI signaling, or other two predefined TCI states.

By the method of the invention, the TCI state number sent by the network equipment side on each time unit does not exceed the receiving capability of the terminal, and a complex preferential receiving principle does not need to be defined.

For another example, the time unit may also have other partitioning methods, for example, partitioning into a control region, PDSCH scheduling offset smaller than a threshold region, PDSCH scheduling offset greater than or equal to a threshold region, etc., and the partitioning of the time unit is not limited in the present invention.

The network side device may notify the terminal to start the TCI state determination method in this embodiment through a high-level signaling, and when the first information is configured, the terminal determines the TCI state of each physical channel or physical signal by using the method of the present invention, but the TCI state indication (determination) method of each physical channel or physical signal specified in the original protocol is not valid. When the higher layer parameters are not configured, the terminal determines the TCI status of each physical channel or physical signal according to the rules in the existing protocol.

Optionally, a higher layer parameter is introduced to indicate the maximum number of TCI states that the terminal can receive on one symbol, and when the second information is configured, the terminal assumes two TCI states for transmission of a physical channel or physical signal within one slot or several symbols; without the second information configured, the terminal assumes a TCI state for the transmission of a physical channel or physical signal within a slot or several symbols.

Example 8:

two TCI states are defined for use as TCI states for all physical channels or physical signals. The TCI state of each physical channel or physical signal is one of two defined TCI states.

Assuming that the two TCI states are TCI 1 and TCI2, respectively, each TCI state is associated with a CORESET, in addition to which a respective physical channel or physical signal may be associated with a CORESET. Thus, the correlation between each physical channel or physical signal and the TCI status can be established, and the TCI status of each physical channel or physical signal can be determined.

In the present invention, a CORESET group refers to a group implicitly divided according to a high-level parameter CORESET poilndex in CORESET. For example, the first CORESET group is a set consisting of a CORESET without configuring the high-level parameter coresetpoilndex, and a CORESET with configuring the high-level parameter coresetpoilndex to be 0. The second CORESET group is a set of CORESETs with the higher layer parameter CORESET poilndex configured as 0.

The two TCI states are associated with two CORESET groups as: the first TCI state (TCI 1) is associated with a first CORESET, and the second TCI state (TCI 2) is associated with a second CORESET. The other way around is also possible, and this association may be predefined in the protocol or configured by the network-side device. In the following description, a first TCI state (TCI 1) is associated with a first CORESET, and a second TCI state (TCI 2) is associated with a second CORESET.

The association of each physical channel or signal with two CORESET groups is:

for the PDCCH, the core set carrying the PDCCH belongs to the first core set or the second core set, and therefore, the association relationship between the PDCCH and the core set can be directly determined, and the TCI state of the PDCCH can be further determined. That is, the TCI status of the PDCCH transmitted by the core set in the first core set is TCI 1, and the TCI status of the PDCCH transmitted by the core set in the second core set is TCI 2.

For a PDSCH, it may be associated with the core set to which the PDCCH scheduling the PDSCH belongs. That is, if the PDCCH scheduling the PDSCH is transmitted in a core set in the first core set, the TCI state of the PDSCH is TCI 1; if the PDCCH scheduling the PDSCH is transmitted in a core set in the second core set, the TCI state of the PDSCH is TCI 2.

For CSI-RS, each CSI-RS may be associated with two TCI states, or with a CORESET group.

For example, the CSI-RS is associated with a TCI state, which may be: in the configuration of each CSI-RS (for example, may be a CSI-RS resource, a CSI resource set, or a CSI resource setting, etc.), a TCI state association indication is configured, for example, to indicate that the configuration of the CSI-RS is the second TCI state of two TCI states.

As another example, the CSI-RS is associated with CORESET and may be: configuring a high-layer parameter CORESETPoolIndex under the configuration of the CSI-RS, and when the high-layer parameter is not configured or the value of the high-layer parameter is configured to be 0, indicating that the configuration of the CSI-RS is associated with TCI 1, namely the TCI state of the CSI-RS is TCI 1; when the value of the higher layer parameter coresetpoilndex is configured to be 1, it indicates that the configuration of the CSI-RS is associated with TCI2, i.e. the TCI status of the CSI-RS is TCI 2.

In addition, instead of using the higher layer parameter coresetpoilndex, a new higher layer parameter can be defined, which also functions similarly.

Other association methods are also possible for aperiodic CSI-RS. If the control information triggering the aperiodic CSI-RS is sent by a CORESET in the first CORESET group, the aperiodic CSI-RS is associated with the first CORESET group, namely the TCI state of the aperiodic CSI-RS is TCI 1; if the control information triggering the aperiodic CSI-RS is sent by a CORESET in the second CORESET group, the aperiodic CSI-RS is associated with the second CORESET group, namely the TCI state of the aperiodic CSI-RS is TCI 2.

Example 9:

when the PDCCH and the CSI-RS overlap on one symbol, the terminal may expect Demodulation Reference signals (DMRSs) of the CSI-RS and the PDCCH to be with respect to a 'QCL-type' parameter QCL according to an existing protocol. When multiple transmission point transmission techniques are introduced, a terminal may receive multiple PDCCHs and multiple CSI-RSs on one symbol, and there is some limitation if all the DMRSs for the CSI-RSs and all the PDCCHs are required to be related to the 'QCL-type' parameter QCL (shown in fig. 3).

At this time, the terminal may determine or assume that the DMRS of each CSI-RS and one of the PDCCHs is about a 'QCL-type' parameter QCL (shown in fig. 4). Specifically, if one CSI-RS is configured with the 'QCL-type' parameter, the terminal may expect the DMRS of the CSI-RS and one PDCCH to be QCL with respect to the 'QCL-type' parameter. If one CSI-RS is not configured with the 'QCL-TypeD' parameter, the terminal may determine that the CSI-RS and the DMRS of one PDCCH are related to the 'QCL-TypeD' parameter QCL. When there are a plurality of PDCCHs, one CSI-RS to which the 'QCL-TypeD' parameter is not configured and which DMRS of the PDCCH are related to the 'QCL-TypeD' parameter QCL, which can be configured by higher layer parameters.

For example, when a higher layer parameter is configured in the configuration of the CSI-RS (e.g., CSI-RS resource, CSI resource set or CSI resource setting, etc.) to indicate the association relationship, e.g., a higher layer parameter coresetpoinidex is configured, the higher layer parameter is not configured, or the value of the higher layer parameter is configured to be 0, it indicates that the configuration of the CSI-RS and the PDCCH transmitted in the CORESET configured by the unconfigured coreploalindex or the coreplonidex to be 0 are associated, i.e., related to the 'QCL-type' parameter QCL. Similarly, when the value of the higher layer parameter is configured to be 1, it indicates that the configuration of the CSI-RS and the PDCCH transmitted in the CORESET configured by CORESET poolndex to be 1 are associated, i.e., with respect to the 'QCL-type' parameter QCL.

In particular, for aperiodic CSI-RS, there may also be other association methods. If the control information triggering the aperiodic CSI-RS is sent in CORESETs with the upper layer parameter coresetpoilndex not configured, or with the upper layer parameter coresetpoilndex configured as 0, the aperiodic CSI-RS is associated with the PDCCH transmitted in the CORESET group with the CORESET poinldex not configured or with the CORESET poinldex configured as 0, i.e. with respect to the 'QCL-type' parameter QCL.

If the control information triggering the aperiodic CSI-RS is sent in the CORESETs with the higher layer parameter coresetpoilndex configured as 1, the aperiodic CSI-RS is associated with the PDCCH transmitted in the CORESET group configured as 1 by the coresetpoilndex, i.e. with respect to the 'QCL-type' parameter QCL.

It should be noted that, in the high frequency band transmission, the control information triggering the aperiodic CSI-RS and the triggered CSI-RS are not usually sent on one symbol.

Or the terminal may assume that the QCL-type characteristic of each CSI-RS is a combination of the DMRS QCL-type characteristics of all PDCCHs, but DMRSs of a plurality of PDCCHs are not required to be QCL with respect to the 'QCL-type' parameter QCL. As shown in fig. 5, the 'QCL-TypeD' parameter between the DMRSs of PDCCH1 and PDCCH2 is not QCL. Specifically, when the CSI-RS is not configured with the TCI state, the terminal may assume that the QCL-type d characteristic of each CSI-RS is a combination of the QCL-type d characteristics of the DMRSs of PDCCH1 and PDCCH 2.

Beams 1 and 2 in fig. 3, 4, and 5 are beams represented by QCL-type parameters.

Based on the same inventive concept, the embodiment of the present invention further provides a terminal, and since the principle of the terminal for solving the problem is similar to the method for monitoring the control channel in the embodiment of the present invention, the implementation of the terminal may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 6, a terminal according to an embodiment of the present invention includes: a processor 600, a memory 601, a transceiver 602, and a bus interface.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 600 in performing operations. The transceiver 602 is used to receive and transmit data under the control of the processor 600.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 600 and various circuits of memory represented by memory 601 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 600 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 600, or implemented by the processor 600. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 600. The processor 600 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps or logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 601, and the processor 600 reads the information in the memory 601 and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 600 is configured to read the program in the memory 601 and execute:

Optionally, the processor 600 is specifically configured to:

Optionally, the at least two determined CORESET to be monitored include:

Optionally, one search space set of the second cell includes:

Optionally, one core set in the first core set includes:

one CORESET of the second set of CORESETs, comprising:

Optionally, the first cell includes:

All cells in the cell containing two different coresetpoolndex values; or

The network side equipment is a pre-configured cell.

Optionally, the second cell includes:

a cell having the lowest index among cells including the CSS set; or

The cell with the lowest CSS set index or USS set index among all cells; or

The cell with the lowest index among the cells containing the USS set.

Optionally, the association relationship includes:

Optionally, the processor 600 is specifically configured to:

Optionally, if the network side device configures the second information for the terminal, the processor 600 is specifically configured to:

a cell index;

CORESET group information;

the spatial index is searched.

Optionally, the control channel transmission pattern includes:

Based on the same inventive concept, another terminal is provided in the embodiments of the present invention, and since the principle of solving the problem of the terminal is similar to the method for determining the transmission configuration indication in the embodiments of the present invention, the implementation of the terminal may refer to the implementation of the method, and repeated details are not described again.

As shown in fig. 7, a terminal according to an embodiment of the present invention includes: a processor 700, a memory 701, a transceiver 702, and a bus interface.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 700 in performing operations. The transceiver 702 is used to receive and transmit data under the control of the processor 700.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 700, and various circuits, represented by memory 701, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 700 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 700, or implemented by the processor 700. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 700. The processor 700 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps or logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 701, and the processor 700 reads the information in the memory 701, and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 700 is configured to read the program in the memory 701 and execute:

a TCI state associated with the CSI-RS;

Optionally, the processor 700 is specifically configured to:

the one or two TCI states include:

a combination of TCI states of the at least one PDCCH; and/or

A TCI status of one of the at least one PDCCH.

Optionally, the TCI status of one PDCCH of the at least one PDCCH includes:

TCI status of PDCCH transmitted in a CORESET group associated with CSI-RS.

Optionally, the one or two TCI states determined by the terminal include:

the terminal configures a TCI state according to RRC signaling; or

The terminal indicates the TCI state according to the DCI signaling; or

The terminal determines the TCI state according to a predefined rule.

the detected TCI states of at least two CORESETs; or

Each time unit in a scheduling unit has one or two TCI states.

Optionally, the time unit includes part or all of the following:

a PDCCH monitoring symbol;

a symbol with a PDSCH scheduling offset less than a first threshold;

symbols within one scheduling unit other than the PDCCH monitoring symbols.

As shown in fig. 8, an embodiment of the present invention provides an apparatus for monitoring a control channel, where the apparatus includes:

a first determining module 801, configured to determine, according to first information configured by a network-side device, at least two control resource sets, to be monitored, having at least two QCL-type characteristics, a CORESET or a search space set, where the first information is used to instruct a terminal to monitor a CORESET or a search space set having at least two QCL-type characteristics; or the terminal determines at least two CORESET or search space sets to be monitored and having an association relation according to a control channel transmission pattern configured by network side equipment;

the monitoring module 802 is configured to monitor at least two control channels according to the determined at least two CORESET or search space sets to be monitored.

Optionally, the at least two determined CORESET to be monitored include:

Optionally, one search space set of the second cell includes:

Optionally, one core set in the first core set includes:

one CORESET of the second set of CORESETs, comprising:

Optionally, the first cell includes:

All cells in the cell containing two different coresetpoolndex values; or

The network side equipment is a pre-configured cell.

Optionally, the second cell includes:

a cell having the lowest index among cells including the CSS set; or

The cell with the lowest CSS set index or USS set index among all cells; or

The cell with the lowest index among the cells containing the USS set.

Optionally, the association relationship includes:

Optionally, the first determining module 801 is further configured to:

Optionally, if the network side device configures second information for the terminal, the first determining module 801 is specifically configured to:

a cell index;

CORESET group information;

the spatial index is searched.

Optionally, the control channel transmission pattern includes:

As shown in fig. 9, an apparatus for determining a transmission configuration indication according to an embodiment of the present invention includes:

a second determining module 901, configured to determine configuration information configured by the network side device and used to determine a TCI state;

a third determining module 902, configured to determine, according to the configuration information, one or two TCI states used for transmitting all physical channels and/or physical signals in one time unit, where a TCI state of each physical channel or physical signal is at least one of the one or two TCI states.

a TCI state associated with the CSI-RS;

Optionally, the physical signal includes CSI-RS, and the third determining module is specifically configured to:

the one or two TCI states include:

a combination of TCI states of the at least one PDCCH; and/or

A TCI status of one of the at least one PDCCH.

Optionally, the TCI status of one PDCCH of the at least one PDCCH includes:

TCI status of PDCCH transmitted in a CORESET group associated with CSI-RS.

Optionally, the one or two TCI states determined by the terminal include:

the terminal configures a TCI state according to RRC signaling; or

The terminal indicates the TCI state according to the DCI signaling; or

The terminal determines the TCI state according to a predefined rule.

the detected TCI states of at least two CORESETs; or

Each time unit in a scheduling unit has one or two TCI states.

Optionally, the time unit includes part or all of the following:

a PDCCH monitoring symbol;

a symbol with a PDSCH scheduling offset less than a first threshold;

symbols within one scheduling unit other than the PDCCH monitoring symbols.

Further, an embodiment of the present invention also provides a computer storage medium having computer program instructions stored therein, which when run on a computer, cause the computer to perform the method of any one of the methods of monitoring a control channel or the method of any one of the methods of determining a transmission configuration indication.

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

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

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

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for monitoring a control channel, the method comprising:

the method comprises the steps that a terminal determines at least two control resource sets (CORESET or search space sets) to be monitored and having at least two quasi co-location type D QCL-Typed characteristics according to first information configured by network side equipment; or the terminal determines at least two CORESET or search space sets with correlation to be monitored according to a control channel transmission pattern configured by the network side equipment;

2. The method of claim 1, wherein the determining, by the terminal, at least two control resource sets CORESET to be monitored, the control resource sets CORESET having at least two QCL-type characteristics according to the first information configured by the network-side device, includes:

3. The method of claim 1, wherein the determining of the at least two CORESETs to be monitored comprises:

4. The method of claim 3, wherein the determining at least two sets of search spaces to be monitored comprises:

5. The method of claim 3 or 4, wherein a set of search spaces for the second cell comprises:

6. The method of claim 3, wherein one of the first set of CORESET comprises:

a CORESET corresponding to a terminal specific search space USS set or a common search space CSS set with the lowest index in a first search space set, wherein the first search space set is a search space set associated with the first CORESET set of the first cell;

one CORESET of the second set of CORESETs, comprising:

7. The method of claim 3, wherein the first cell comprises:

All cells in the cell containing two different coresetpoolndex values; or

The network side equipment is a pre-configured cell.

8. The method of claim 3, wherein the second cell comprises:

a cell having the lowest index among cells including the CSS set; or

The cell with the lowest CSS set index or USS set index among all cells; or

The cell with the lowest index among the cells containing the USS set.

9. The method of claim 1, wherein the association relationship comprises:

The CORESET index, the search space index and the transmission configuration among the CORESETs in the same time slot indicate the correlation of one of TCI states.

10. The method of claim 1, wherein the method further comprises:

11. The method of claim 8, wherein the determining, by the terminal, a CORESET or a set of search spaces having a QCL-type characteristic if the network-side device configures the second information for the terminal comprises:

a cell index;

CORESET group information;

the spatial index is searched.

12. The method of claim 1, wherein the control channel transmission pattern comprises:

13. The method of claim 1, wherein the first information comprises Radio Resource Control (RRC) signaling and/or Medium Access Control (MAC) control element (MAC CE) signaling, wherein the RRC signaling and/or the MAC CE signaling is used to indicate a CORESET or a set of search spaces that can be monitored.

14. A method of determining a transmission configuration indication, the method comprising:

the terminal determines configuration information configured by the network side equipment and used for determining the state of the Transmission Configuration Indication (TCI);

15. The method of claim 14, wherein the physical signal comprises a channel state information reference signal (CSI-RS), and the one or two TCI states comprise some or all of:

a TCI state associated with the CSI-RS;

16. The method of claim 14, wherein the physical signals comprise CSI-RS, and wherein the terminal determines one or two TCI states used for transmission of all physical channels and/or physical signals in a time unit according to the configuration information, comprising:

17. The method of claim 14, wherein the physical channel comprises a Physical Downlink Control Channel (PDCCH) or a Physical Downlink Shared Channel (PDSCH), and the one or two TCI states comprise a TCI state associated with a CORESET group, wherein the CORESET group is the CORESET group associated with the PDCCH or the PUSCH.

18. The method of claim 14, wherein the physical channel and/or the physical signal comprises a CSI-RS and at least one PDCCH;

the one or two TCI states include:

a combination of TCI states of the at least one PDCCH; and/or

A TCI status of one of the at least one PDCCH.

19. The method of claim 18, wherein the TCI status of one of the at least one PDCCH comprises:

TCI status of PDCCH transmitted in a CORESET group associated with CSI-RS.

20. The method of claim 14, wherein the one or two TCI states determined by the terminal comprise:

the terminal controls the TCI state configured by RRC signaling according to the radio resource; or

The terminal indicates the TCI state according to the downlink control information DCI signaling; or

The terminal determines the TCI state according to a predefined rule.

21. The method of claim 20, wherein the TCI status determined by the terminal according to the predefined rule comprises:

TCI states of at least two CORESETs detected by the terminal; or

22. The method of claim 14, further comprising:

all time units within a scheduling unit have the same one or two TCI states; or

Each time unit in a scheduling unit has one or two TCI states.

23. The method of claim 22, wherein the time unit comprises some or all of:

a PDCCH monitoring symbol;

a symbol with a PDSCH scheduling offset less than a first threshold;

symbols within one scheduling unit other than the PDCCH monitoring symbols.

24. A terminal comprising a processor, a memory, and a transceiver;

determining at least two control resource sets (CORESET) or search space sets to be monitored, wherein the control resource sets have at least two quasi co-location type D QCL-Typed characteristics, and the control resource sets are configured according to first information configured by network side equipment; or the terminal determines at least two CORESET or search space sets with correlation to be monitored according to a control channel transmission pattern configured by the network side equipment;

25. The terminal of claim 24, wherein the processor is further configured to:

26. The terminal of claim 24, wherein the at least two determined CORESET to be monitored comprise:

At least two CORESET having different QCL-type characteristics correspond to the plurality of search space sets having the lowest index.

27. The terminal of claim 24, wherein one of the first set of CORESET comprises:

the CORESET corresponding to the USS set or the CSS set with the lowest index in the first search space is provided, wherein the first search space set is a search space set associated with the first CORESET set of the first cell;

one CORESET of the second set of CORESETs, comprising:

28. A terminal comprising a processor, a memory, and a transceiver;

29. The terminal of claim 28, wherein the physical signal comprises CSI-RS, and wherein the one or two TCI states comprise some or all of:

a TCI state associated with the CSI-RS;

30. The terminal of claim 28, wherein the processor is further configured to:

31. An apparatus for monitoring a control channel, the apparatus comprising:

the device comprises a first determining module, a second determining module and a monitoring module, wherein the first determining module is used for determining at least two control resource sets (CORESET) or search space sets to be monitored, and the control resource sets have at least two quasi co-location type D QCL-Typed characteristics; or the terminal determines at least two CORESETs to be monitored and having an association relation according to a control channel transmission pattern configured by the network side equipment;

32. An apparatus for determining a transmission configuration indication, the apparatus comprising:

33. A computer storage medium having computer program instructions stored therein, which when run on a computer, cause the computer to perform the method of any of claims 1 to 13 or perform the method of any of claims 14 to 23.