CN108810995B - Communication method, network equipment and user equipment - Google Patents

Abstract

The application provides a communication method, network equipment and user equipment, wherein the method comprises the following steps: the network equipment determines the specific search space resource of the UE according to the maximum bandwidth of the UE and the public search space resource; the network equipment sends configuration information to the UE, wherein the configuration information is used for indicating the UE specific search space resource. According to the method and the device, the UE specific search space resources are configured for the UE according to the maximum bandwidth and the public search space resources of the UE, so that the UE can monitor the public search space and the UE specific search space simultaneously.

Description

Communication method, network device and user equipment

technical field

The present application relates to the field of communication, and more particularly, to a communication method, network device and user equipment.

Background technique

In Long Term Evolution (Long Term Evolution, LTE), common search space resources are predefined, and user equipment (User Equipment, UE) specific search space resources are predefined or based on network side configuration. Since the minimum UE bandwidth capability in a cell in LTE is not less than the system bandwidth, that is, the working bandwidth of the UE is the system bandwidth, all UEs can monitor both the common search space and the UE-specific search space at the same time.

In the 5th Generation (5G) New Radio (NR), the system bandwidth is different from that in the LTE system. If the existing scheme is used to predefine or configure the UE-specific search space, it may cause the UE It is not possible to monitor both the common search space and the UE specific search space at the same time.

SUMMARY OF THE INVENTION

The present application provides a communication method, network device and user equipment, which enable a UE to monitor a common search space and a UE-specific search space at the same time.

In a first aspect, a communication method is provided, the method comprising:

The network device determines the UE-specific search space resource according to the maximum bandwidth of the user equipment UE and the common search space resource;

The network device sends configuration information to the UE, where the configuration information is used to indicate the UE-specific search space resources.

Wherein, both the common search space resource and the UE-specific search space resource refer to frequency domain resources.

Optionally, the configuration parameters corresponding to the common search space resources are the same as the configuration parameters corresponding to the UE-specific search space resources. The configuration parameters may include at least one of parameters such as subcarrier interval size, cyclic prefix length, transmission time unit length, symbol length, and the number of symbols in the transmission time unit. It should be understood that the configuration parameter may also be referred to as a system parameter set or other names, which are not limited in this embodiment of the present invention.

It should be noted that the maximum bandwidth of the UE is less than or equal to the maximum bandwidth that the UE can support. In other words, the maximum bandwidth of the UE here is the maximum bandwidth that the UE or the base station expects the UE to support, and the maximum bandwidth that the UE can support is the maximum bandwidth that the UE can theoretically provide (also referred to as the maximum bandwidth capability of the UE). For example, the maximum bandwidth that the UE can support is equal to the minimum value between the radio frequency transmission bandwidth and the baseband processing bandwidth, that is, the maximum bandwidth capability of the UE=min (radio frequency bandwidth capability, baseband processing capability), where min() represents the minimum value in () .

By configuring the UE-specific search space resources for the UE according to the maximum bandwidth of the UE and the common search space resources, the UE can monitor the common search space and the UE-specific search space at the same time.

The UE uses the common search space to detect common downlink control information and/or UE-specific downlink control information, and uses the UE-specific search space to detect UE-specific downlink control information.

The common downlink control information is downlink control information scrambled by a public wireless network temporary identity (Radio Network Temporary Identity, RNTI). The public RNTI is a public parameter pre-defined or configured by a network device to all UEs in a cell or a group of UEs, including a system message radio network temporary identifier (System Information Radio Network Temporary Identifier, SI-RNTI), a paging radio network temporary identifier (Paging Radio Network Temporary Identify, P-RNTI), Random Access Radio Network Temporary Identify (Random Access Radio Network Temporary Identify, RA-RNTI), and the like.

The UE-specific downlink control information is downlink control information scrambled by a UE-specific radio network temporary identity (Radio Network Tempory Identity, RNTI). The UE-specific RNTI is a parameter configured by the network device for a specific UE in a cell, including a cell radio network temporary identifier (Cell Radio Network TemporaryIdentifier, C-RNTI), a temporary C-RNTI (Temporary C-RNTI), a semi-persistent scheduling C-RNTI (Semi-Persistent Scheduling C-RNTI, SPS C-RNTI) and so on.

Optionally, the common search space resource may be configured through a master information block (Master Information Block, MIB), or implicitly indicated by initial access information. The initial access information may be a time-frequency resource of a synchronization signal (Synchronization Signal, SS) block, and the synchronization signal block may include a primary synchronization signal (Primary SS) and/or a secondary synchronization signal (Secondary SS), and may also include MIB.

Optionally, the initial access information (such as the time-frequency resource of the synchronization signal block) can also implicitly indicate one or more candidate resources of the common search space resource, and then indicate the one or more candidate resources of the one or more candidate resources through the MIB. A candidate resource is used as the common search space resource.

Optionally, the network device sends configuration information to the UE, including:

The network device sends radio resource control (Radio Resource Control, RRC) signaling to the UE, where the RRC signaling includes the configuration information. That is, the network device may configure UE-specific search space resources for the UE through RRC signaling.

In some possible implementations, the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or equal to the maximum bandwidth of the UE.

It should be understood that the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain refers to: the bandwidth of the UE-specific search space resources in the frequency domain, the bandwidth of the common search space resources in the frequency domain The bandwidth in the domain and the separation bandwidth of the UE-specific search space resource and the common search space resource in the frequency domain.

For example, the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain refers to: the highest resource block (Resource Block, RB) of the UE-specific search space resources and the common search space The number of RBs between the lowest RB of the resource, or the number of RBs between the highest RB of the common search space resource and the lowest RB of the UE-specific search space resource.

In some possible implementations, the sequence number of the central RB of the UE-specific search space resource and the sequence number of the lowest RB of the common search space resource satisfy the following relationship:

为所述公共搜索空间资源的最低RB的序号，

为所述UE特定搜索空间资源的中心RB的序号，w为所述公共搜索空间资源在频域上的传输带宽对应的RB的数量，v为所述UE特定搜索空间资源在频域上的传输带宽的RB的数量，W为所述UE的最大带宽对应的RB的数量，v≤W，并且当v为偶数时，所述UE特定搜索空间资源的中心RB为所述UE特定搜索空间资源在频域上的传输带宽对应的RB中的第v/2+1个RB。in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the central RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, and v is the transmission of the UE-specific search space resource in the frequency domain The number of RBs of the bandwidth, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W, and when v is an even number, the central RB of the UE-specific search space resource is the UE-specific search space resource at The v/2+1th RB among the RBs corresponding to the transmission bandwidth in the frequency domain.

可以是预定义的或通过MIB配置的。w, v can be configured or predefined,

Can be predefined or configured via MIB.

Optionally, if v is an even number, and the central RB of the UE-specific search space resource is the v/2th RB in the RBs corresponding to the transmission bandwidth in the frequency domain, then the lowest RB of the common search space resource The sequence number of , and the sequence number of the central RB of the UE-specific search space resource satisfy the following relationship:

与所述公共搜索空间资源的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the UE-specific search space resource

with the sequence number of the lowest RB of the common search space resource

Satisfy the following relation:

与所述公共搜索空间资源的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the UE-specific search space resource

with the sequence number of the lowest RB of the common search space resource

Satisfy the following relation:

For the relevant parameters in the relational formulae (2), (3) and (4), reference may be made to the relevant description of the relational formula (1), which will not be repeated here.

In some possible implementations, the common search space resources are a subset of the UE-specific search space resources. This configuration can ensure that UEs with different maximum bandwidths can monitor both the common search space and the UE-specific search space.

In some possible implementations, the bandwidth of the common search space resource in the frequency domain is less than or equal to the minimum value among the maximum bandwidths of multiple UEs in the cell. For example, the bandwidth of the common search space resource in the frequency domain is less than or equal to the minimum value among the maximum bandwidths of all UEs or a group of UEs in the cell. In this way, it can be ensured that all the UEs in the cell can monitor the common search space resources.

In some possible implementations, before the network device determines the UE-specific search space resource configured for the UE according to the maximum bandwidth of the user equipment UE and the common search space resource, the method further includes:

The network device receives the indication information reported by the UE, where the indication information is used to indicate the maximum bandwidth of the UE.

In some possible implementations, the common search space resource includes a synchronization signal block, and the sequence number of the central RB of the common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

为所述同步信号块的最低RB的序号，

为所述公共搜索空间资源的中心RB的序号，W_min为小区内多个UE的最大带宽中的最小值对应的RB的数量，w为所述公共搜索空间资源在频域上的传输带宽对应的RB的数量，m为所述同步信号块的RB的数量，w≤W_min，并且当w为偶数时，所述公共搜索空间资源的中心RB为所述公共搜索空间资源在频域上的传输带宽对应的RB中的第w/2+1个RB。w可以是配置的或者预定义的，m和

可以是预定义的。in,

is the sequence number of the lowest RB of the synchronization signal block,

is the sequence number of the central RB of the public search space resource, W _min is the number of RBs corresponding to the minimum value among the maximum bandwidths of multiple UEs in the cell, and w is the transmission bandwidth corresponding to the public search space resource in the frequency domain The number of RBs in the synchronous signal block, m is the number of RBs in the synchronization signal block, w≤W _min , and when w is an even number, the central RB of the common search space resource is the frequency domain of the common search space resource The w/2+1th RB in the RBs corresponding to the transmission bandwidth. w can be configured or predefined, m and

Can be predefined.

In this way, it can be ensured that the UE can monitor the common search space and the synchronization signal block at the same time.

Optionally, if w is an even number, and the central RB of the common search space resource is the w/2th RB in the RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, then the common search space The sequence number of the central RB of the space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

For the relevant parameters in the relational expressions (6), (7) and (8), reference may be made to the relevant description of the relational expression (5), which will not be repeated here.

In a second aspect, a communication method is provided, the method comprising:

The user equipment UE receives configuration information sent by the network device, where the configuration information is used to indicate UE-specific search space resources configured for the UE, and the UE-specific search space resources are based on the maximum bandwidth and common search space resources of the UE definite;

The UE uses the UE-specific search space resource to detect UE-specific downlink control information according to the configuration information.

The UE can simultaneously monitor the common search space and the UE-specific search space according to the UE-specific search space resources configured by the network side.

Optionally, the configuration parameters corresponding to the common search space resources are the same as the configuration parameters corresponding to the UE-specific search space resources. The configuration parameters may include at least one of parameters such as subcarrier interval size, cyclic prefix length, transmission time unit length, symbol length, and the number of symbols in the transmission time unit. It should be understood that the configuration parameter may also be referred to as a system parameter set or other names, which are not limited in this embodiment of the present invention.

The transmission time unit may be a time unit such as a time slot, a time slot aggregation, a mini-slot, or a mini-slot aggregation, which is not limited in this embodiment of the present invention.

In some possible implementations, the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or equal to the maximum bandwidth of the UE.

In some possible implementations, the sequence number of the central RB of the UE-specific search space resource and the sequence number of the lowest RB of the common search space resource satisfy the following relationship:

为所述公共搜索空间资源的最低RB的序号，

为所述UE特定搜索空间资源的中心RB的序号，w为所述公共搜索空间资源在频域上传输带宽对应的RB的数量，v为所述UE特定搜索空间资源在频域上传输带宽对应的RB的数量，W为所述UE的最大带宽对应的RB的数量，v≤W，并且当v为偶数时，所述UE特定搜索空间资源的中心RB为所述UE特定搜索空间资源在频域上的传输带宽对应的RB中的第v/2+1个RB。in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the central RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, and v is the transmission bandwidth of the UE-specific search space resource in the frequency domain. The number of RBs corresponding to the maximum bandwidth of the UE, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W, and when v is an even number, the central RB of the UE-specific search space resource is the UE-specific search space resource on-frequency The v/2+1th RB in the RBs corresponding to the transmission bandwidth on the domain.

可以是预定义的或通过MIB配置的。w, v can be configured or predefined,

Can be predefined or configured via MIB.

Optionally, if v is an even number, and the central RB of the UE-specific search space resource is the v/2th RB in the RBs corresponding to the transmission bandwidth of the UE-specific search space resource in the frequency domain, then the The sequence number of the lowest RB of the common search space resource and the sequence number of the central RB of the UE-specific search space resource satisfy the following relationship:

与所述UE特定搜索空间资源的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the common search space resource

The sequence number of the lowest RB with the UE-specific search space resource

Satisfy the following relation:

与所述UE特定搜索空间资源的最高RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the common search space resource

The sequence number of the highest RB with the UE-specific search space resource

Satisfy the following relation:

For the relevant parameters in the relational formulae (2), (3) and (4), reference may be made to the relevant description of the relational formula (1), which will not be repeated here.

In some possible implementations, the common search space resources are a subset of the UE-specific search space resources. This configuration can ensure that UEs with different maximum bandwidths can monitor both the common search space and the UE-specific search space.

In some possible implementations, the bandwidth of the common search space resource in the frequency domain is less than or equal to the minimum value among the maximum bandwidths of multiple UEs in the cell. For example, the bandwidth of the common search space resource in the frequency domain is less than or equal to the minimum value among the maximum bandwidths of all UEs or a group of UEs in the cell. In this way, it can be ensured that all the UEs in the cell can monitor the common search space resources.

In some possible implementations, the method further includes:

The UE sends indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE.

In some possible implementations, the common search space resource includes a synchronization signal block, and the sequence number of the central RB of the common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

为所述同步信号块的最低RB的序号，

为所述公共搜索空间资源的中心RB的序号，W_min为小区内多个UE的最大带宽中的最小值对应的RB的数量，w为所述公共搜索空间资源在频域上的传输带宽对应的RB的数量，m为所述同步信号块的RB的数量，w≤W_min，并且当w为偶数时，所述公共搜索空间资源的中心RB为所述公共搜索空间资源在频域上的传输带宽对应的RB中的第w/2+1个RB。w可以是配置的或者预定义的，m和

可以是预定义的。in,

is the sequence number of the lowest RB of the synchronization signal block,

is the sequence number of the central RB of the public search space resource, W _min is the number of RBs corresponding to the minimum value among the maximum bandwidths of multiple UEs in the cell, and w is the transmission bandwidth corresponding to the public search space resource in the frequency domain The number of RBs in the synchronous signal block, m is the number of RBs in the synchronization signal block, w≤W _min , and when w is an even number, the central RB of the common search space resource is the frequency domain of the common search space resource The w/2+1th RB in the RBs corresponding to the transmission bandwidth. w can be configured or predefined, m and

Can be predefined.

Optionally, if w is an even number, and the central RB of the common search space resource is the w/2th RB in the RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, then the common search space The sequence number of the central RB of the space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

For the relevant parameters in the relational expressions (6), (7) and (8), reference may be made to the relevant description of the relational expression (5), which will not be repeated here.

In a third aspect, a communication method is provided, the method comprising:

If the total bandwidth of the user equipment UE-specific search space resources and the common search space resources in the frequency domain is greater than the maximum bandwidth of the UE, the UE does not monitor the common search space resources and the UE-specific search space resources at the same time; or,

If the configuration parameters corresponding to the UE-specific search space resources and the common search space resources are different, and the UE does not support parallel transmission of multiple configuration parameters, the UE does not monitor the common search space resources and the UE-specific search space resources at the same time.

The embodiments of the present invention are suitable for scenarios of large bandwidth or parallel transmission of multiple configuration parameters, and can support UEs with different capabilities to blindly detect common downlink control information and UE-specific downlink control information, which helps reduce the number of blind detections of UEs with different capabilities.

The common downlink control information is downlink control information scrambled by a public wireless network temporary identity (Radio Network Temporary Identity, RNTI). Wherein, the public RNTI includes System Information Radio Network Temporary Identifier (SI-RNTI), Paging Radio Network Temporary Identify (P-RNTI), Random Access Wireless Network Temporary Identification (Random Access Radio Network Temporary Identify, RA-RNTI), etc.

The UE-specific downlink control information is downlink control information scrambled by a UE-specific Radio Network Temporary Identity (RNTI). The UE-specific RNTI includes a Cell Radio Network Temporary Identifier (C-RNTI), a temporary C-RNTI (Temporary C-RNTI), and a Semi-Persistent Scheduling C-RNTI (Semi-Persistent Scheduling C-RNTI). RNTI, SPSC-RNTI), etc.

Optionally, the common search space resource may be configured through a master information block (Master Information Block, MIB), or implicitly indicated by initial access information. The initial access information may be a time-frequency resource of a synchronization signal (Synchronization Signal, SS) block, and the synchronization signal block may include a primary synchronization signal (Primary SS) and/or a secondary synchronization signal (Secondary SS), and may also include MIB.

Optionally, the initial access information (such as the time-frequency resource of the synchronization signal block) can also implicitly indicate one or more candidate resources of the common search space resource, and then indicate the one or more candidate resources of the one or more candidate resources through the MIB. A candidate resource is used as the common search space resource.

Optionally, the configuration parameters corresponding to the common search space resources may be predefined or indicated by MIB.

Optionally, the UE-specific search space resources may be configured through radio resource control (Radio Resource Control, RRC) signaling, and the configuration parameters corresponding to the UE-specific search space resources may also be configured through RRC signaling.

The configuration parameters may include at least one of parameters such as subcarrier interval size, cyclic prefix length, transmission time unit length, symbol length, and the number of symbols in the transmission time unit. It should be understood that the configuration parameter may also be referred to as a system parameter set or other names, which are not limited in this embodiment of the present invention.

The transmission time unit may be a time unit such as a time slot, a time slot aggregation, a mini-slot, or a mini-slot aggregation, which is not limited in this embodiment of the present invention.

In some possible implementations, the UE does not monitor the common search space resources and the UE-specific search space resources at the same time, including:

The UE uses the common search space resource to detect the first UE-specific downlink control information and the common downlink control information in the first transmission time unit, and uses the UE-specific search space resource to detect the second UE-specific downlink in the second transmission time unit control information;

or,

The UE detects the UE-specific downlink control information by using the UE-specific search space resource in a transmission time unit, and detects only the common downlink control information by using the common search space resource in a second transmission time unit;

Wherein, the first transmission time unit is different from the second transmission time unit.

This embodiment of the present invention does not limit the time sequence of the first transmission time unit and the second transmission time unit.

The first UE-specific downlink control information and the second UE-specific downlink control information may be the same or different, which is also not limited in this embodiment of the present invention.

In some possible implementations, the method further includes:

The UE reports indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE and/or whether the UE supports parallel transmission of multiple configuration parameters.

For example, the UE may send the indication information through a preamble sequence or random access message 3 (Msg3).

In a fourth aspect, a communication method is provided, the method comprising:

If the total bandwidth of the user equipment UE-specific search space resources and the common search space resources in the frequency domain is greater than the maximum bandwidth of the UE, the network device sends the first UE-specific downlink control information by using the common search space resources in the first transmission time unit and common downlink control information, the second common downlink control information is sent using the UE-specific search space resource in the second transmission time unit, or the network device uses the UE-specific search space resource to send the UE-specific downlink in the first transmission time unit control information, using the common search space resource to send common downlink control information in a second transmission time unit, where the first transmission time unit is different from the second transmission time unit;

or,

If the configuration parameters corresponding to the UE-specific search space resources and the common search space resources are different, and the UE does not support parallel transmission of multiple configuration parameters, the network device sends the first UE-specific downlink control using the common search space resources in the first transmission time unit information and common downlink control information, the UE-specific search space resource is used to send the second common downlink control information in the second transmission time unit, or the network device uses the UE-specific search space resource to send the UE-specific search space resource in the first transmission time unit Downlink control information, using the common search space resource to send the common downlink control information in the second transmission time unit;

Wherein, the first transmission time unit is different from the second transmission time unit.

The first UE-specific downlink control information and the second UE-specific downlink control information may be the same or different, which is not limited in this embodiment of the present invention.

In some possible implementations, the method further includes:

The network device receives the indication information reported by the UE, where the indication information is used to indicate the maximum bandwidth of the UE and/or whether the UE supports parallel transmission of multiple configuration parameters.

In a fifth aspect, a communication method is provided, the method comprising:

If the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is greater than the maximum bandwidth of the UE, the UE transmits the system message within the random access response (Random Access Response, RAR) time window. The first common search space resource is used in the transmission time unit to detect the first common downlink control information and the second common downlink control information, and the second common downlink control information is used in the transmission time unit in which no system message is transmitted within the RAR time window. The common search resource detects the second common downlink control information; or,

If the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE, the configuration parameters corresponding to the first common search space resource and the second common search space resource different, and the UE does not support parallel transmission of multiple configuration parameters, the UE uses the first common search space resource to detect the first common downlink control information and the the second common downlink control information, and use the second common search space resource to detect the second common downlink control information on the transmission time unit in which no system message is transmitted within the RAR time window; or,

If the bandwidth of the first common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE, the bandwidth of the second common search space resource in the frequency domain is greater than the maximum bandwidth of the UE, or the first common search space resource and the The configuration parameters corresponding to the two common search space resources are different and the UE does not support the configuration parameters corresponding to the second common search space resources, then the UE only uses the first common search space resources to detect the first common downlink control information and the second common downlink control information; or,

In other cases, the UE uses the first common search space resource to detect the first common downlink control information, and uses the second common search space resource to detect the second common downlink control information.

The other cases include: the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE.

The first common downlink control information includes downlink control information for scheduling system messages, and the second common downlink control information includes downlink control information for scheduling the UE RAR.

The first common search space resource is used for transmitting the first common downlink control information and/or the second common downlink control information, and the second common search space resource is used for transmitting the second common downlink control information.

The embodiments of the present invention are applicable to scenarios of large bandwidth or parallel transmission of multiple configuration parameters, and can support UEs with different capabilities to blindly detect common downlink control information.

Optionally, the first common search space resource may be configured through MIB or implicitly indicated by initial access information. The initial access information may be a time-frequency resource of a synchronization signal (Synchronization Signal, SS) block, and the synchronization signal block may include a primary synchronization signal (Primary SS) and/or a secondary synchronization signal (Secondary SS), and may also include MIB.

Optionally, one or more candidate resources of the first common search space resource may be implicitly indicated by the initial access information (such as the time-frequency resource of the synchronization signal block), and then the one or more candidate resources may be indicated by the MIB. A candidate resource in is used as the first common search space resource.

Optionally, the configuration parameter corresponding to the first common search space resource may be predefined or indicated by MIB.

Optionally, the second public search space resource may be configured through a system message. Optionally, one or more candidate resources of the second common search space resource may be implicitly indicated by initial access information (such as the time-frequency resource of the synchronization signal block), and then the one or more candidate resources may be indicated by a system message. One candidate resource among the resources is used as the second common search space resource.

In some possible implementations, the configuration parameters corresponding to the second public search space resource may be the same as the configuration parameters corresponding to the first public search space by default.

In some possible implementations, configuration parameters corresponding to the second public space search resource may be configured through a system message. Optionally, configuration parameters corresponding to the second common search space resource and the first common search space resource may be different. For example, the first common search space resource corresponds to the first configuration parameter, and the second common search space corresponds to the second configuration parameter.

The configuration parameters may include at least one of parameters such as subcarrier interval size, cyclic prefix length, transmission time unit length, symbol length, and the number of symbols in the transmission time unit. It should be understood that the configuration parameter may also be referred to as a system parameter set or other names, which are not limited in this embodiment of the present invention.

It should be understood that the first common search space resource includes a synchronization signal block, and the sequence number of the central RB of the first common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

为所述同步信号块的最低RB的序号，

为所述第一公共搜索空间资源的中心RB的序号，W_min为小区内多个UE的最大带宽中的最小值对应的RB的数量，w₁为所述公共搜索空间资源在频域上的传输带宽对应的RB的数量，m为所述同步信号块的RB的数量，w₁≤W_min，并且当w为偶数时，所述第一公共搜索空间资源的中心RB为所述第一公共搜索空间资源在频域上的传输带宽对应的RB中的第w₁/2+1个RB。in,

is the sequence number of the lowest RB of the synchronization signal block,

is the sequence number of the central RB of the first common search space resource, W _min is the number of RBs corresponding to the minimum value among the maximum bandwidths of multiple UEs in the cell, and w ₁ is the frequency domain of the common search space resource. The number of RBs corresponding to the transmission bandwidth, m is the number of RBs in the synchronization signal block, w ₁ ≤W _min , and when w is an even number, the center RB of the first common search space resource is the first common RB The w ₁ /2+1th RB in the RBs corresponding to the transmission bandwidth of the space resource in the frequency domain is searched.

可以是预定义。w ₁ can be configured or predefined, m and

Can be predefined.

Optionally, if w ₁ is an even number, and the central RB of the first common search space resource is the w ₁ /2th RB in the RBs corresponding to the transmission bandwidth of the first common search space resource in the frequency domain , then the sequence number of the central RB of the first common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the first common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the first common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

For the relevant parameters in the relational formulae (10), (11) and (12), reference may be made to the relevant description of the relational formula (9), which will not be repeated here.

The second common search space resource may include a synchronization signal block, or may not include a synchronization signal block.

In some possible implementations, the second common search space resource does not include a synchronization signal block, and the lowest RB, the central RB or the highest RB of the second common search space resource may be any RB in the downlink bandwidth of the system, so The subband occupied by the second common search space resource in the frequency domain is less than or equal to the minimum value W _min among the maximum bandwidths of multiple UEs in the cell.

The sequence number of the lowest RB of the second common search space resource satisfies the following relational expression:

Or, the sequence number of the central RB of the second public search space resource satisfies the following relational expression:

Or, the sequence number of the highest RB of the second common search space resource satisfies the following relational expression:

为所述第二公共搜索空间资源的最低RB的序号，

为所述第二公共搜索空间资源的中心RB的序号，

为所述第二公共搜索空间资源的最高RB的序号，w₂为所述第二公共搜索空间资源在频域上占用的子带的RB的数量，

为下行带宽的RB的数量，所述下行带宽可以是系统的带宽，也可以是一段频带的带宽。in,

is the sequence number of the lowest RB of the second common search space resource,

is the sequence number of the central RB of the second public search space resource,

is the sequence number of the highest RB of the second common search space resource, w ₂ is the number of RBs in the subband occupied by the second common search space resource in the frequency domain,

is the number of RBs in the downlink bandwidth, and the downlink bandwidth may be the bandwidth of the system, or may be the bandwidth of a frequency band.

In some possible implementations, the first common search space resource and the second common search space resource share a part of the frequency band in the frequency domain.

In some possible implementations, the first common search space resource and the second common search space are orthogonal in the frequency domain.

In some possible implementations, the second common search space resource does not include synchronization signal blocks, and the lowest RB, the central RB or the highest RB of the second common search space resource may be any RB in the system downlink bandwidth. Optionally, the bit overhead Y of the second common downlink control information satisfies the following relational expression:

则

like

but

则

like

but

为系统下行带宽对应的RB的数量。Wherein, _Lmax is the maximum number of RBs in the subband occupied by the second common search space resource in the frequency domain,

is the number of RBs corresponding to the system downlink bandwidth.

In a sixth aspect, a communication method is provided, the method comprising:

If the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is greater than the maximum bandwidth of the UE, the network device uses the The first common search space resource sends the first common downlink control information and the second common downlink control information, and uses the second common search resource to send the 2. public downlink control information; or,

If the bandwidth of the first common search space resource and the second common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE, the configuration parameters corresponding to the first common search space resource and the second common search space resource are different , and the UE does not support parallel transmission of multiple configuration parameters, the network device sends the first common downlink control information and the second common downlink control information using the first common search space resource on the transmission time unit for transmitting system messages within the RAR time window control information, and use the second common search space resource to send the second common downlink control information on a transmission time unit that does not transmit system messages within the RAR time window; or,

If the bandwidth of the first common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE, the bandwidth of the second common search space resource in the frequency domain is greater than the maximum bandwidth of the UE, or the first common search space resource and the The configuration parameters corresponding to the two common search space resources are different and the UE does not support the configuration parameters corresponding to the second common search space resources, then the network device only uses the first common search space resources to send the first common downlink control information and second public downlink control information; or,

In other cases, the network device uses the first common search space resource to send the first common downlink control information, and uses the second common search space resource to send the second common downlink control information.

The other cases include: the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE.

The first common downlink control information includes downlink control information for scheduling system messages, and the second common downlink control information includes downlink control information for scheduling the UE RAR.

The first common search space resource is used for transmitting the first common downlink control information and/or the second common downlink control information, and the second common search space resource is used for transmitting the second common downlink control information.

The embodiments of the present invention are applicable to scenarios of large bandwidth or parallel transmission of multiple configuration parameters, and can support UEs with different capabilities to blindly detect common downlink control information.

Optionally, the network device may configure the first public search space resource for the UE through the MIB, or the network device may also implicitly indicate the first public search space resource through the sent initial access information. The initial access information may be a time-frequency resource of a synchronization signal (Synchronization Signal, SS) block, and the synchronization signal block may include a primary synchronization signal (Primary SS) and/or a secondary synchronization signal (Secondary SS), and may also include MIB.

Optionally, the network device may also implicitly indicate to the UE one or more candidate resources of the first common search space resource through initial access information (such as the time-frequency resource of the synchronization signal block), and then use the sent MIB A candidate resource among the one or more candidate resources is indicated to the UE as the first common search space resource.

Optionally, the network device may configure a configuration parameter corresponding to the first public search space resource for the UE through the MIB.

Optionally, the network device may configure the second public search space resource for the UE through a system message, or the network device may also implicitly indicate the second public search space to the UE through initial access information resource.

Optionally, the network device may also implicitly indicate to the UE one or more candidate resources of the second public search space resource by sending the initial access information (such as the time-frequency resource of the synchronization signal block), and then send the The system message indicates to the UE one of the one or more candidate resources as the second common search space resource.

In some possible implementations, the configuration parameters corresponding to the second public search space resource may be the same as the configuration parameters corresponding to the first public search space by default.

In some possible implementations, the network device may configure configuration parameters corresponding to the second public space search resource for the UE through a system message. Optionally, configuration parameters corresponding to the second common search space resource and the first common search space resource may be different. For example, the first common search space resource corresponds to the first configuration parameter, and the second common search space corresponds to the second configuration parameter.

The configuration parameters may include at least one of parameters such as subcarrier interval size, cyclic prefix length, transmission time unit length, symbol length, and the number of symbols in the transmission time unit. It should be understood that the configuration parameter may also be referred to as a system parameter set or other names, which are not limited in this embodiment of the present invention.

It should be understood that the first common search space resource includes a synchronization signal block, and the sequence number of the central PRB of the first common search space resource and the sequence number of the lowest PRB of the synchronization signal block satisfy the following relationship:

为所述同步信号块的最低RB的序号，

为所述第一公共搜索空间资源的中心RB的序号，W_min为小区内多个UE的最大带宽中的最小值对应的RB的数量，w₁为所述公共搜索空间资源在频域上的传输带宽对应的RB的数量，m为所述同步信号块的RB的数量，w₁≤W_min，并且当w为偶数时，所述第一公共搜索空间资源的中心RB为所述第一公共搜索空间资源在频域上的传输带宽对应的RB中的第w₁/2+1个RB。in,

is the sequence number of the lowest RB of the synchronization signal block,

is the sequence number of the central RB of the first common search space resource, W _min is the number of RBs corresponding to the minimum value among the maximum bandwidths of multiple UEs in the cell, and w ₁ is the frequency domain of the common search space resource. The number of RBs corresponding to the transmission bandwidth, m is the number of RBs in the synchronization signal block, w ₁ ≤W _min , and when w is an even number, the center RB of the first common search space resource is the first common RB The w ₁ /2+1th RB in the RBs corresponding to the transmission bandwidth of the space resource in the frequency domain is searched.

可以是预定义。w ₁ can be configured or predefined, m and

Can be predefined.

Optionally, if w ₁ is an even number, and the central RB of the first common search space resource is the w ₁ /2th RB in the RBs corresponding to the transmission bandwidth of the first common search space resource in the frequency domain , then the sequence number of the central RB of the first common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the first common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

与所述同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

For the relevant parameters in the relational formulae (10), (11) and (12), reference may be made to the relevant description of the relational formula (9), which will not be repeated here.

The second common search space resource may include a synchronization signal block, or may not include a synchronization signal block.

In some possible implementations, the second common search space resource does not include a synchronization signal block, and the lowest RB, the central RB or the highest RB of the second common search space resource may be any RB in the downlink bandwidth of the system, so The subband occupied by the second common search space resource in the frequency domain is less than or equal to the minimum value W _min among the maximum bandwidths of multiple UEs in the cell.

The sequence number of the lowest RB of the second common search space resource satisfies the following relational expression:

Or, the sequence number of the central RB of the second public search space resource satisfies the following relational expression:

Or, the sequence number of the highest RB of the second common search space resource satisfies the following relational expression:

为所述第二公共搜索空间资源的最低RB的序号，

为所述第二公共搜索空间资源的中心RB的序号，

为所述第二公共搜索空间资源的最高RB的序号，w₂为所述第二公共搜索空间资源在频域上占用的子带的RB的数量，

为系统下行带宽的RB的数量。in,

is the sequence number of the lowest RB of the second common search space resource,

is the sequence number of the central RB of the second public search space resource,

is the sequence number of the highest RB of the second common search space resource, w ₂ is the number of RBs in the subband occupied by the second common search space resource in the frequency domain,

is the number of RBs in the downlink bandwidth of the system.

In some possible implementations, the first common search space resource and the second common search space resource share a part of the frequency band in the frequency domain.

In some possible implementations, the first common search space resource and the second common search space are orthogonal in the frequency domain.

In some possible implementations, the second common search space resource does not include a synchronization signal block, and the starting RB, the central RB or the highest RB of the second common search space resource may be any RB in the system downlink bandwidth. Optionally, the bit overhead Y of the second common downlink control information satisfies the following relational expression:

则

like

but

则

like

but

为系统下行带宽对应的RB的数量。Wherein, _Lmax is the maximum number of RBs in the subband occupied by the second common search space resource in the frequency domain,

is the number of RBs corresponding to the downlink bandwidth of the system.

In a seventh aspect, another communication method is provided, the method comprising:

The network device sends n system information SI messages in the same transmission time unit, the n SI messages occupy different frequency domain resources, the n messages have different sending periods, and n is an integer greater than or equal to 2.

The transmission time unit may be a time unit such as a time slot, a time slot aggregation, a mini-slot, or a mini-slot aggregation, which is not limited in this embodiment of the present invention.

Among them, n SI messages use the same configuration parameters. This configuration parameter can be predefined or indicated by a system message.

Since SI messages and data using different configuration parameters need to reserve guard bands during frequency division multiplexing, and in the prior art, SI messages of different periods are sent by time division multiplexing, so for each period of SI messages, the In other words, guard bands need to be reserved when frequency division multiplexing with data using different configuration parameters, so more guard bands need to be reserved, resulting in a waste of frequency domain resources.

In the embodiment of the present invention, by sending multiple SI messages with different periods in the same transmission time unit, and making the multiple SI messages transmit in the FDM manner, it is beneficial to reduce the SI messages of different periods and the use of different configuration parameters. When data is transmitted in parallel by FDM, a reserved guard band is required, thereby helping to avoid waste of frequency domain resources.

In some possible implementations, the method further includes:

The network device sends a system information block SIB1 message, and the frequency domain resources of the n SI messages are determined according to the indices of the n SI messages in the SIB1 message.

In some possible implementations, the respective time windows in which the n SI messages are located have the same initial transmission time unit. The starting transmission time unit may be a starting frame, a starting time slot or a starting mini-slot. The start frame refers to the system frame at the start position.

Optionally, the offset between the start transmission time unit of the time window where each of the n SI messages is located and the start transmission time unit of SIB1 is predefined or configured through SIB1. For example, the value of the offset may be 0, or may be other values, which are not limited in this embodiment of the present invention. When the value of the offset is 0, SIB1 and n SI messages have the same initial transmission time unit.

In some possible implementations, the start frame and start time slot of the time window where the kth SI message of the n SI messages is located satisfies the following relationship:

Wherein, n _f is the starting frame of the time window where the kth SI message is located, _ns is the starting time slot of the time window where the kth SI message is located, n is a predefined value, and T _k is the first time slot of the time window where the kth SI message is located. The period of the time window where the k SI messages are located, α _offset indicates the offset of the starting time slot of the window where the kth SI message is located relative to the starting time slot of SIB1, k is greater than or equal to 2 and less than or equal to n Integer.

In an eighth aspect, another communication method is provided, the method comprising:

The user equipment UE receives n SI messages sent by the network equipment in the same transmission time unit. The frequency domain resources of the n SI messages are different, and the transmission periods of the n SI messages are different, and n is an integer greater than or equal to 2.

The transmission time unit may be a time unit such as a time slot, a time slot aggregation, a mini-slot, or a mini-slot aggregation, which is not limited in this embodiment of the present invention.

Among them, n SI messages use the same configuration parameters. This configuration parameter can be predefined or indicated by a system message.

Since SI messages and data using different configuration parameters need to reserve guard bands during frequency division multiplexing, and in the prior art, SI messages of different periods are sent by time division multiplexing, so for each period of SI messages, the In other words, guard bands need to be reserved when frequency division multiplexing with data using different configuration parameters, so more guard bands need to be reserved, resulting in a waste of frequency domain resources.

In the embodiment of the present invention, by sending multiple SI messages with different periods in the same transmission time unit, and making the multiple SI messages transmit in the FDM manner, it is beneficial to reduce the SI messages of different periods and the use of different configuration parameters. When data is transmitted in parallel by FDM, a reserved guard band is required, thereby helping to avoid waste of frequency domain resources.

In some possible implementations, the method further includes:

The user equipment receives the system information block SIB1 message sent by the network device, and the frequency domain resources of the n SI messages are determined according to the indices of the multiple SI messages in the SIB1 message.

In some possible implementations, the respective time windows in which the n SI messages are located have the same initial transmission time unit. The starting transmission time unit may be a starting frame, a starting time slot or a starting mini-slot. The start frame refers to the system frame at the start position.

Optionally, the offset between the start transmission time unit of the time window where each of the n SI messages is located and the start transmission time unit of SIB1 is predefined or configured through SIB1. For example, the value of the offset may be 0, or may be other values, which are not limited in this embodiment of the present invention. When the value of the offset is 0, SIB1 and n SI messages have the same initial transmission time unit.

In some possible implementations, the start frame and start time slot of the time window where the kth SI message of the n SI messages is located satisfies the following relationship:

Wherein, n _f is the starting frame of the time window where the kth SI message is located, _ns is the starting time slot of the time window where the kth SI message is located, n is a predefined value, and T _k is the first time slot of the time window where the kth SI message is located. The period of the time window where the k SI messages are located, α _offset indicates the offset of the starting time slot of the window where the kth SI message is located relative to the starting time slot of SIB1, k is greater than or equal to 2 and less than or equal to n Integer.

In a ninth aspect, a network device is provided for executing the above-mentioned method of the network device. Specifically, the network device may include a module for executing the corresponding steps of the above-mentioned network device. For example, a processing unit, a sending unit and/or a receiving unit, etc.

In a tenth aspect, a user equipment is provided, which is used in the above-mentioned method for the user equipment. Specifically, the user equipment may include a module for performing the corresponding steps of the above-mentioned user equipment. For example, a processing unit, a sending unit and a receiving unit, etc.

In an eleventh aspect, a network device is provided, comprising a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the network device executes the above-mentioned method for the network device .

Optionally, the network device may further include a transceiver, and the transceiver is configured to transmit and receive signals under the control of the processor.

A twelfth aspect provides a user equipment, including a memory and a processor, where the memory is used for storing a computer program, and the processor is used for calling and running the computer program from the memory, so that the terminal device executes the above-mentioned method for the terminal device .

Optionally, the user equipment may further include a transceiver, and the transceiver is configured to transmit and receive signals under the control of the processor.

In a thirteenth aspect, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, which, when executed on a computer, cause the computer to perform the methods described in the above aspects.

A fourteenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the above aspects.

Description of drawings

1 is a schematic flowchart of a communication method according to an embodiment of the present invention;

2 is a schematic diagram of common search space resources and UE-specific search space resources according to an embodiment of the present invention;

3 is a schematic flowchart of a communication method according to another embodiment of the present invention;

4 is a schematic diagram of common search space resources and UE-specific search space resources according to another embodiment of the present invention;

5 is a schematic flowchart of a communication method according to another embodiment of the present invention;

6 is a schematic diagram of a first common search space resource and a second common search space resource according to another embodiment of the present invention;

7 is a schematic diagram of a first common search space resource and a second common search space resource according to another embodiment of the present invention;

FIG. 8 is a schematic flowchart of a communication method according to another embodiment of the present invention;

9 is a schematic diagram of an SI window in a communication method according to another embodiment of the present invention;

10 is a schematic diagram of an SI window in a communication method according to another embodiment of the present invention;

11 is a schematic structural diagram of a network device according to an embodiment of the present invention;

12 is a schematic structural diagram of a network device according to another embodiment of the present invention;

13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

In different communication systems, the network devices in this embodiment of the present invention may be different devices. For example, the network device may be a base station, a base station controller (Base Station Controller, BSC), a radio network controller (RadioNetwork Controller, RNC), an evolved base station (evolved Node B, eNB or e-NodeB) in the LTE system, WCDMA The base station (NodeB) in the system or the gNB in the 5G system, etc.

In this embodiment of the present invention, user equipment (User Equipment, UE) may also be referred to as terminal equipment, mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal), etc. Multiple core networks to communicate, for example, the UE can be a mobile phone (or "cellular" phone), a computer with communication capabilities, etc., and the UE can also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device.

In this embodiment of the present invention, the configuration parameters may include at least one of parameters such as subcarrier interval size, cyclic prefix length, transmission time unit length, symbol length, and the number of symbols in the transmission time unit. It should be understood that the configuration parameter may also be referred to as a system parameter set or other names, which are not limited in this embodiment of the present invention.

It should also be understood that the transmission time unit may be a time unit such as a time slot, a time slot aggregation, a mini-slot, or a mini-slot aggregation, which is not limited in this embodiment of the present invention.

The embodiment of the present invention provides a communication method. By determining the UE-specific search space resources according to the maximum bandwidth of the UE and the common search space resources, and configuring the UE-specific search space resources for the UE, it is helpful for the UE to monitor the common search space resources at the same time. and UE-specific search space resources.

FIG. 1 is a schematic flowchart of a communication method 100 according to an embodiment of the present invention. As shown in FIG. 1, the method 100 includes the following.

110. The network device determines the UE-specific search space resource according to the maximum bandwidth of the UE and the common search space resource.

120. The network device sends configuration information to the UE, where the configuration information is used to indicate UE-specific search space resources.

130. The UE receives the configuration information.

140. The UE uses the UE-specific search space resource to detect the UE-specific downlink control information according to the received configuration information.

Wherein, both the common search space resource and the UE-specific search space resource refer to frequency domain resources.

Common downlink control information can be used for scheduling system messages and random access responses, and UE-specific downlink control information can be used for scheduling UE-specific uplink and downlink data transmission information.

It should be noted that the maximum bandwidth of the UE is less than or equal to the maximum bandwidth that the UE can support. In other words, the maximum bandwidth of the UE here is the maximum bandwidth that the UE or the base station expects the UE to support, and the maximum bandwidth that the UE can support is the maximum bandwidth that the UE can theoretically provide (also referred to as the maximum bandwidth capability of the UE). For example, the maximum bandwidth that the UE can support is equal to the minimum value between the radio frequency transmission bandwidth and the baseband processing bandwidth, that is, the maximum bandwidth capability of the UE=min (radio frequency bandwidth capability, baseband processing capability), where min() represents the minimum value in () .

By configuring the UE-specific search space resources for the UE according to the maximum bandwidth of the UE and the common search space resources, the UE can monitor the common search space and the UE-specific search space at the same time.

The common downlink control information is downlink control information scrambled by RNTI. Wherein, the common RNTI is a common parameter pre-defined or configured by a network device for all UEs or a group of UEs in a cell, including SI-RNTI, P-RNTI, RA-RNTI, and the like.

The UE-specific downlink control information is downlink control information scrambled by the UE-specific RNTI. The UE-specific RNTI is a parameter configured by the network device for a specific UE in the cell, including C-RNTI, temporary C-RNTI, SPS C-RNTI, and the like.

Optionally, the common search space resource may be configured through the MIB, or implicitly indicated by the initial access information. The initial access information may be time-frequency resources of the SS block, and the synchronization signal block may include a primary synchronization signal (PrimarySS) and/or a secondary synchronization signal (Secondary SS), and may also include MIB.

Optionally, one or more candidate resources of the space resource can also be commonly searched for by initial access information (such as the time-frequency resource of the synchronization signal block), and then one of the one or more candidate resources is indicated as a common search resource through the MIB. space resources.

The bandwidth of the common search space resource in the frequency domain is less than or equal to the minimum value among the maximum bandwidths of multiple UEs in the cell. For example, the bandwidth of the common search space resource in the frequency domain is less than or equal to the minimum value among the maximum bandwidths of all UEs or a group of UEs in the cell. In this way, it can be ensured that all the UEs in the cell can monitor the common search space resources.

Optionally, the configuration parameters corresponding to the common search space resources may be predefined or indicated by the MIB.

Optionally, in 120, sending the configuration information by the network device to the UE includes: the network device sends RRC signaling to the UE, and the RRC signaling includes the configuration information. That is, the network device may configure UE-specific search space resources for the UE through RRC signaling. Accordingly, in 130 the UE receives the RRC signaling. The UE may acquire the configuration information from the RRC signaling after receiving the RRC signaling.

Optionally, the configuration parameters corresponding to the UE-specific search space resources may also be configured through RRC signaling.

Optionally, the configuration parameters corresponding to the common search space resources are the same as the configuration parameters corresponding to the UE-specific search space resources.

In some embodiments, the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or equal to the maximum bandwidth of the UE.

It should be understood that the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain refers to: the bandwidth of the UE-specific search space resources in the frequency domain, the bandwidth of the common search space resources in the frequency domain, and the UE-specific search space resources. The separation bandwidth between space resources and common search space resources in the frequency domain.

For example, the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain refers to the RB between the highest resource block (Resource Block, RB) of the UE-specific search space resources and the lowest RB of the common search space resources , or the number of RBs between the highest RB of the common search space resource and the lowest RB of the UE-specific search space resource.

Optionally, as shown in FIG. 2 , the common search space resources and the UE-specific search space resources share part of the frequency band in the frequency domain, and the configuration parameters corresponding to the UE-specific search space resources are the same as the configuration parameters corresponding to the common search space resources. In some embodiments, the sequence number of the central RB of the UE-specific search space resource and the sequence number of the lowest RB of the common search space resource satisfy the following relationship:

为公共搜索空间资源的最低RB的序号，

为UE特定搜索空间资源的中心RB的序号，w为公共搜索空间资源在频域上的传输带宽对应的RB的数量，v为UE特定搜索空间资源在频域上的传输带宽的RB的数量，W为UE的最大带宽对应的RB的数量，v≤W，并且当v为偶数时，UE特定搜索空间资源的中心RB为UE特定搜索空间资源在频域上的传输带宽对应的RB中的第v/2+1个RB。in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the central RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, v is the number of RBs of the transmission bandwidth of the UE-specific search space resource in the frequency domain, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W, and when v is an even number, the central RB of the UE-specific search space resource is the RB corresponding to the transmission bandwidth of the UE-specific search space resource in the frequency domain. v/2+1 RBs.

可以是预定义的或通过MIB配置的。w, v can be configured or predefined,

Can be predefined or configured via MIB.

Optionally, if v is an even number, and the central RB of the UE-specific search space resource is the v/2th RB among the RBs corresponding to the transmission bandwidth in the frequency domain, then the sequence number of the lowest RB of the common search space resource is the same as that of the UE. The sequence number of the center RB of a specific search space resource satisfies the following relation:

与公共搜索空间资源的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the UE-specific search space resource

The sequence number of the lowest RB with the common search space resource

Satisfy the following relation:

与公共搜索空间资源的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the UE-specific search space resource

The sequence number of the lowest RB with the common search space resource

Satisfy the following relation:

For the relevant parameters in the relational formulae (2), (3) and (4), reference may be made to the relevant description of the relational formula (1), which will not be repeated here.

It should also be noted that various equivalent modifications or changes made by those skilled in the art according to the above relational expressions (5), (6), (7) and (8) also fall within the scope of the embodiments of the present invention.

In some possible implementations, the common search space resources are a subset of UE-specific search space resources. This configuration can ensure that UEs with different maximum bandwidths can monitor both the common search space and the UE-specific search space.

Optionally, the method shown in FIG. 1 may further include: the UE sends indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE. For example, the UE may report the maximum bandwidth of the UE through a preamble sequence or random access message 3 (Msg3).

Optionally, the common search space resource includes a synchronization signal block, and the sequence number of the central RB of the common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

为同步信号块的最低RB的序号，

为公共搜索空间资源的中心RB的序号，W_min为小区内多个UE的最大带宽中的最小值对应的RB的数量，w为公共搜索空间资源在频域上的传输带宽对应的RB的数量，m为同步信号块的RB的数量，w≤W_min，并且当w为偶数时，公共搜索空间资源的中心RB为公共搜索空间资源在频域上的传输带宽对应的RB中的第w/2+1个RB。w可以是配置的或者预定义的，m和

可以是预定义的。in,

is the sequence number of the lowest RB of the synchronization signal block,

is the sequence number of the central RB of the common search space resource, W _min is the number of RBs corresponding to the minimum value among the maximum bandwidths of multiple UEs in the cell, and w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain , m is the number of RBs in the synchronization signal block, w≤W _min , and when w is an even number, the center RB of the common search space resource is the w/th of the RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain 2+1 RBs. w can be configured or predefined, m and

Can be predefined.

In this way, it can be ensured that the UE can monitor the common search space and the synchronization signal block at the same time.

Optionally, if w is an even number, and the center RB of the common search space resource is the w/2th RB among the RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, then the center RB of the common search space resource is the w/2th RB. The sequence number and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

与同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

与同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

For the relevant parameters in the relational expressions (6), (7) and (8), reference may be made to the relevant description of the relational expression (5), which will not be repeated here.

It should also be noted that various equivalent modifications or changes made by those skilled in the art according to the above relational expressions (5), (6), (7) and (8) also fall within the scope of the embodiments of the present invention.

Another embodiment of the present invention also provides another communication method, which is suitable for scenarios of large bandwidth or parallel transmission of multiple configuration parameters, and can support UEs with different capabilities to blindly detect common downlink control information and UE-specific downlink control information. Helps to reduce the number of blind detections of UEs with different capabilities. FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present invention. As shown in Figure 3, the method includes:

310. The UE reports indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE and/or whether the UE supports parallel transmission of multiple configuration parameters.

For example, the UE may send the indication information through a preamble sequence or random access message 3 (Msg3).

320. The network device receives the indication information.

It should be understood that in a large bandwidth scenario, the indication information is used to indicate the maximum bandwidth of the UE; in a scenario of parallel transmission of multiple configuration parameters, the indication information is used to indicate whether the UE supports parallel transmission of multiple configuration parameters.

If the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is greater than the maximum bandwidth of the UE, or the configuration parameters corresponding to the UE-specific search space resources and the common search space resources are different, and the UE does not support parallel transmission of multiple configuration parameters , the method shown in FIG. 3 may further include: 330 and 340 , or 350 and 360 .

330. The network device sends the first UE-specific downlink control information and the common downlink control information by using the common search space resources in the first transmission time unit, and sends the second UE-specific downlink control information by using the UE-specific search space resources in the second transmission time unit.

It should be noted that the sending of the first UE-specific downlink control information and the common downlink control information by the network device using the common search space resources includes: the network device using part or all of the common search space resources to send the common downlink control information and the first UE-specific downlink control information. Downlink control information.

For example, the common search space resource includes 16 CCEs, of which 8 CCEs are used to send common downlink control information, and the other 8 CCEs are used to send UE-specific downlink control information; or, 4 CCEs are used to send common downlink control information, 8 CCEs are used to send UE-specific downlink control information; alternatively, 8 CCEs are used to send common downlink control information, and 8 CCEs are used to send UE-specific downlink control information; or, 4 CCEs are used to send common downlink control information, 4 The CCEs are used to send UE-specific downlink control information and the like.

Similarly, sending the second UE-specific downlink control information by the network device using the UE-specific search space resources includes: the network device using some or all of the UE-specific search space resources to send the second UE-specific downlink control information.

340. The UE detects the first UE-specific downlink control information and the common downlink control information by using the common search space resources in the first transmission time unit, and detects the second UE-specific downlink control information by using the UE-specific search space resources in the second transmission time unit.

350. The network device sends the UE-specific downlink control information by using the UE-specific search space resource in the first transmission time unit, and only sends the common downlink control information by using the common search space resource in the second transmission time unit.

It should be noted that the sending of the UE-specific downlink control information by the network device using the UE-specific search space resources includes: the network device using some or all of the UE-specific search space resources to send the UE-specific downlink control information. The sending of the common downlink control information by the network device using the common search space resource includes: the network device using part or all of the common search space resources to send the common downlink control information.

360. The UE detects the UE-specific downlink control information by using the UE-specific search space resource in the first transmission time unit, and detects only the common downlink control information by using the common search space resource in the second transmission time unit.

The first transmission time unit is different from the second transmission time unit, and the time sequence of the first transmission time unit and the second transmission time unit is also not limited.

It should be understood that if the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or equal to the maximum bandwidth of the UE, or if the configuration parameters corresponding to the UE-specific search space resources and the common search space resources are different, and the UE supports multiple If the configuration parameters are transmitted in parallel, the network device can use the UE-specific search space resources and the common search space resources to send the UE-specific downlink control information and the common downlink control information at the same time. Accordingly, the UE can monitor the common search space and the UE-specific search space resources at the same time.

Therefore, the UE in the embodiment of the present invention can blindly detect the common downlink control information and the UE-specific downlink control information in different ways according to its own capabilities.

Specifically, the UE does not simultaneously detect common search space resources and UE-specific search space resources including:

The UE detects the first UE-specific downlink control information and the common downlink control information by using the common search space resource in the first transmission time unit, and detects the second UE-specific downlink control information by using the UE-specific search space resource in the second transmission time unit;

Alternatively, the UE detects the UE-specific downlink control information by using the UE-specific search space resource in the first transmission time unit, and detects only the common downlink control information by using the common search space resource in the second transmission time unit.

The first UE-specific downlink control information and the second UE-specific downlink control information may be the same or different, which is also not limited in this embodiment of the present invention.

Specifically, the simultaneous monitoring of public search space resources and UE-specific search space resources by the UE includes:

The UE detects UE-specific downlink control information and common downlink control information using common search space resources, and simultaneously detects UE-specific downlink control information using UE-specific search space resources.

It should be noted that, in this embodiment of the present invention, the UE-specific search space resources and the common search space resources may share part of the frequency band in the frequency domain, as shown in FIG. 2 . At this time, the configuration parameters corresponding to the UE-specific search space resources and the common search space resources are the same.

Alternatively, the UE-specific search space resources and the common search space resources may also be orthogonal in the frequency domain, that is, the UE-specific search space resources and the common search space resources do not overlap each other in the frequency domain, as shown in FIG. 4 . At this time, the configuration parameters corresponding to the UE-specific search space resources and the common search space resources may be the same or different.

Another embodiment of the present invention also provides a communication method, in which two kinds of common search space resources are configured, and the two kinds of common search space resources are used to transmit different common downlink control information, and the UE searches according to the two kinds of common search space resources The relationship between space resources and its own maximum bandwidth, or according to its own multi-configuration parameter parallel transmission capability, blindly detects common downlink control information in different ways. Therefore, the embodiments of the present invention are applicable to scenarios of large bandwidth or parallel transmission of multiple configuration parameters, and can support UEs with different capabilities to blindly detect common downlink control information. FIG. 5 is a schematic flowchart of a communication method 500 according to an embodiment of the present invention. As shown in FIG. 5, the method 500 includes the following contents.

510. The UE sends indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE or whether the UE supports parallel transmission of multiple configuration parameters.

For example, the UE may send the indication information through a preamble sequence or random access message 3 (Msg3).

520. The network device receives the indication information.

It should be understood that in a large bandwidth scenario, the indication information is used to indicate the maximum bandwidth of the UE; in a scenario of parallel transmission of multiple configuration parameters, the indication information is used to indicate whether the UE supports parallel transmission of multiple configuration parameters.

After receiving the indication information, the network device can send the first common downlink control information and the second common downlink control information in different ways according to the capabilities of the UE.

If the first preset condition is satisfied, after 520, the method 500 may further include: 520 and 530. The first preset condition may include: the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is greater than the maximum bandwidth of the UE; or, the first common search space resource and the second common search space resource. The bandwidth in the frequency domain is less than or equal to the maximum bandwidth of the UE, the configuration parameters corresponding to the first common search space resource and the second common search space resource are different, and the UE does not support parallel transmission of multiple configuration parameters.

530. The network device sends the first common downlink control information and the second common downlink control information by using the first common search space resource on the transmission time unit for transmitting the system message within the RAR time window, and does not transmit the system message within the RAR time window. The second common downlink control information is sent on the transmission time unit using the second common search resource.

It should be noted that the sending of the first common downlink control information and the second common downlink control information by the network device using the first common search space resource includes: the network device using part or all of the first common search space resources to send the first common downlink control information control information and second common downlink control information. The sending of the second common downlink control information by the network device using the second common search resource includes: the network device using part or all of the second common search resources to send the second common downlink control information.

540. The UE detects the first common downlink control information and the second common downlink control information by using the first common search space resource on the transmission time unit for transmitting the system message within the RAR time window, and does not transmit the transmission of the system message within the RAR time window. The second common downlink control information is detected by using the second common search resource in the time unit.

If the second preset condition is satisfied, after 520, the method 500 may further include: 550 and 560. The second preset condition may include: the bandwidth of the first common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE, and the bandwidth of the second common search space resource in the frequency domain is greater than the maximum bandwidth of the UE; The bandwidth of a common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE, the configuration parameters corresponding to the first common search space resource and the second common search space resource are different, and the UE does not support the Configuration parameters.

550. The network device only uses the first common search space resource to send the first common downlink control information and the second common downlink control information.

560. The UE only uses the first common search space resource to detect the first common downlink control information and the second common downlink control information.

If the third preset condition is satisfied, after 520, the method 500 may further include: 570 and 580. The third preset condition may include: the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain is less than or equal to the maximum bandwidth of the UE.

570. The network device uses the first common search space resource to send the first common downlink control information, and uses the second common search space resource to send the second common downlink control information.

580. The UE uses the first common search space resource to detect the first common downlink control information, and uses the second common search space resource to detect the second common downlink control information.

The embodiments of the present invention are applicable to scenarios of large bandwidth or parallel transmission of multiple configuration parameters, and can support UEs with different capabilities to blindly detect common downlink control information.

It should be understood that the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain refers to: the bandwidth of the first common search space resource in the frequency domain, the bandwidth of the second common search space resource in the frequency domain and the interval bandwidth between the first common search space resource and the second common search space resource in the frequency domain.

For example, the total bandwidth of the first common search space resource and the second common search space resource in the frequency domain refers to: the total bandwidth of the RB between the highest RB of the first common search space resource and the lowest RB of the second common search space resource number, or the number of RBs between the highest RB of the second common search space resource and the lowest RB of the first common search space resource.

The first common search space resource is used for transmitting the first common downlink control information and/or the second common downlink control information, and the second common search space resource is used for transmitting the second common downlink control information. The first common downlink control information includes downlink control information for scheduling system messages, and the second common downlink control information includes downlink control information for scheduling UE RARs.

Optionally, the first common search space resource may be configured through the MIB, or implicitly indicated by the initial access information. The initial access information may be a time-frequency resource of a synchronization signal (Synchronization Signal, SS) block, and the synchronization signal block may include a primary synchronization signal (Primary SS) and/or a secondary synchronization signal (Secondary SS), and may also include MIB.

Optionally, one or more candidate resources of the first common search space resource may be implicitly indicated by the initial access information (such as the time-frequency resource of the synchronization signal block), and then the one or more candidate resources may be indicated by the MIB. A candidate resource in is used as the first common search space resource.

Optionally, the configuration parameter corresponding to the first public search space resource may be predefined or indicated by the MIB.

Optionally, the second public search space resource may be configured through a system message. Optionally, one or more candidate resources of the second common search space resource may be implicitly indicated by initial access information (such as the time-frequency resource of the synchronization signal block), and then the one or more candidate resources may be indicated by a system message. One candidate resource among the resources is used as the second common search space resource.

In some embodiments, the configuration parameters corresponding to the second common search space resource may be the same as the configuration parameters corresponding to the first common search space by default.

In some embodiments, configuration parameters corresponding to the second public space search resource may be configured through a system message. Optionally, configuration parameters corresponding to the second common search space resource and the first common search space resource may be different. For example, the first common search space resource corresponds to the first configuration parameter, and the second common search space corresponds to the second configuration parameter.

It should be understood that the first common search space resource includes a synchronization signal block, and the sequence number of the central RB of the first common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

为同步信号块的最低RB的序号，

为第一公共搜索空间资源的中心RB的序号，W_min为小区内多个UE的最大带宽中的最小值对应的RB的数量，w₁为公共搜索空间资源在频域上的传输带宽对应的RB的数量，m为同步信号块的RB的数量，w₁≤W_min，并且当w为偶数时，第一公共搜索空间资源的中心RB为第一公共搜索空间资源在频域上的传输带宽对应的RB中的第w₁/2+1个RB。in,

is the sequence number of the lowest RB of the synchronization signal block,

is the sequence number of the central RB of the first common search space resource, W _min is the number of RBs corresponding to the minimum value among the maximum bandwidths of multiple UEs in the cell, and w ₁ is the transmission bandwidth of the common search space resource in the frequency domain. The number of RBs, m is the number of RBs in the synchronization signal block, w ₁ ≤W _min , and when w is an even number, the center RB of the first common search space resource is the transmission bandwidth of the first common search space resource in the frequency domain The w ₁ /2+1th RB in the corresponding RB.

可以是预定义。w ₁ can be configured or predefined, m and

Can be predefined.

Optionally, if w ₁ is an even number, and the central RB of the first common search space resource is the w ₁ /2th RB among the RBs corresponding to the transmission bandwidth of the first common search space resource in the frequency domain, then the first The sequence number of the central RB of the common search space resource and the sequence number of the lowest RB of the synchronization signal block satisfy the following relationship:

与同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the lowest RB of the first common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

与同步信号块的最低RB的序号

满足如下关系式：Optionally, the sequence number of the highest RB of the first common search space resource

with the sequence number of the lowest RB of the sync block

Satisfy the following relation:

For the relevant parameters in the relational formulae (10), (11) and (12), reference may be made to the relevant description of the relational formula (9), which will not be repeated here.

When the above relational expressions (9) to (10) are satisfied, the UE can monitor the first common search space resource and the synchronization signal block at the same time.

The second common search space resource may include the synchronization signal block, or may not include the synchronization signal block.

In some embodiments, the second common search space resource does not include synchronization signal blocks, the lowest RB, the central RB or the highest RB of the second common search space resource may be any RB in the downlink bandwidth of the system, and the second common search space resource is in The subband occupied in the frequency domain is less than or equal to the minimum value _Wmin among the maximum bandwidths of multiple UEs of the cell.

The sequence number of the lowest RB of the second common search space resource satisfies the following relation:

Or, the sequence number of the center RB of the second public search space resource satisfies the following relational expression:

Or, the sequence number of the highest RB of the second common search space resource satisfies the following relational expression:

为第二公共搜索空间资源的最低RB的序号，

为第二公共搜索空间资源的中心RB的序号，

为第二公共搜索空间资源的最高RB的序号，w₂为第二公共搜索空间资源在频域上占用的子带的RB的数量，

为下行带宽的RB的数量，下行带宽可以是系统的带宽，也可以是一段频带的带宽。in,

is the sequence number of the lowest RB of the second common search space resource,

is the sequence number of the center RB of the second public search space resource,

is the sequence number of the highest RB of the second common search space resource, w ₂ is the number of RBs in the subband occupied by the second common search space resource in the frequency domain,

is the number of RBs in the downlink bandwidth, and the downlink bandwidth may be the bandwidth of the system, or may be the bandwidth of a frequency band.

Optionally, the first common search space resource and the second common search space resource share part of the frequency band in the frequency domain, as shown in FIG. 6 . At this time, the configuration parameters corresponding to the second common search space resource are the same as the configuration parameters corresponding to the first common search space resource.

Optionally, the first common search space resource and the second common search space are orthogonal in the frequency domain, that is, the first common search space resource and the second common search space do not overlap each other in the frequency domain, as shown in FIG. 7 . In this case, the configuration parameters corresponding to the second common search space resource and the configuration parameters corresponding to the first common search space resource may be the same or different.

In some embodiments, the second common search space resource does not include a synchronization signal block, and the lowest RB, the central RB or the highest RB of the second common search space resource may be any RB in the downlink bandwidth of the system. Optionally, the bit overhead Y of the second common downlink control information satisfies the following relational expression:

则

like

but

则

like

but

为系统下行带宽对应的RB的数量。where _Lmax is the maximum number of RBs in the subband occupied by the second common search space resource in the frequency domain,

is the number of RBs corresponding to the system downlink bandwidth.

The bit overhead of the second common downlink control information is determined according to the above relationship, which is beneficial to reduce the number of bits of the downlink control information, thereby reducing the control overhead.

Since SI messages and data using different configuration parameters need to reserve guard bands during frequency division multiplexing, and in the prior art, SI messages with different periods are sent by time division multiplexing (TDM), so for For each periodic SI message, a guard band needs to be reserved when frequency division multiplexing with data using different configuration parameters, so that more guard bands need to be reserved, resulting in a waste of frequency domain resources. Therefore, another embodiment of the present invention provides a communication method. By sending multiple SI messages with different periods in the same transmission time unit, and making the multiple SI messages transmit by means of FDM, it is beneficial to reduce the different periods. A guard band needs to be reserved when the SI message and data using different configuration parameters are transmitted in parallel by FDM, thereby helping to avoid the waste of frequency domain resources. FIG. 8 is a schematic flowchart of a communication method according to an embodiment of the present invention. As shown in Figure 8, the method includes:

810. The network device sends n system information (System Information, SI) messages on the same transmission time unit, where the frequency domain resources of the n SI messages are different, and the sending periods of the n SI messages are different, and n is an integer greater than or equal to 2 . 820. The UE receives the n SI messages.

It should be noted that the n SI messages use the same configuration parameters. This configuration parameter can be predefined or indicated by a system message.

As shown in Figure 9, the subbands of the SI window of n SI messages are FDM distributed within the system bandwidth. In this way, in the scenario of parallel transmission of multiple configuration parameters, it is only necessary to reserve two guard bands at the outermost of the n subbands of the n SI messages, instead of reserving two guard bands for the subbands of each SI message, It is beneficial to avoid waste of frequency domain resources.

As shown in FIG. 10 , the initial transmission time units of the SI windows corresponding to the n SI messages are the same. SI-win in FIG. 10 represents the SI window. Since the periods of the SI windows corresponding to the n SI messages are different, the distribution of the SI windows of the n SI messages presents a nested structure as shown in FIG. 10 . In other words, the SI window with the shorter period is included in the slot where the SI window with the longer period is located.

The frequency domain resources of the n SI messages may be predefined or configured by the network device.

Optionally, as shown in FIG. 8, before 810, the method may further include: 830. The network device sends a system information block 1 (System Information Block, SIB1) message, and the frequency domain resources of the n SI messages are based on the n The indices of the SI messages in the SIB1 message are determined; 840, the UE receives the SIB1 message. After receiving the SIB1 message, the UE may determine the frequency domain resources of the n SI messages according to the indices of the n SI messages in the SIB1 message. For example, the offset value x of the starting RB corresponding to the kth SI message in the n SI messages relative to the starting RB corresponding to the first SI message satisfies: x=(n-1)×m, where m is a The number of RBs corresponding to the frequency domain width of the SI message, then the starting RB corresponding to the kth SI message is I _RB +x, where I _RB is the offset of the starting RB corresponding to the first SI message in the system bandwidth value. I _RBs are configured through broadcast signaling or higher layer signaling. Here the ordering of the SI messages is determined according to the index in the SIB1 message. Optionally, the time windows in which each of the n SI messages are located have the same initial transmission time unit. The start transmission time unit may be a start frame, a start slot, or a start minislot. The start frame refers to the system frame at the start position.

Optionally, the offset between the start transmission time unit of the time window where each of the n SI messages is located and the start transmission time unit of the SIB1 is predefined or configured through the SIB1. For example, the value of the offset may be 0, or may be other values, which are not limited in this embodiment of the present invention. When the value of the offset is 0, SIB1 and n SI messages have the same initial transmission time unit.

Optionally, the starting subframe and the starting time slot of the time window where the kth SI message in the n SI messages is located satisfy the following relational formula:

Among them, n _f is the starting subframe of the time window where the kth SI message is located, _ns is the starting time slot of the time window where the kth SI message is located, n is a predefined value, and T _k is the kth SI message The period of the time window where the message is located, and α _offset is the offset of the start time slot of the window where the kth SI message is located relative to the start time slot of SIB1. k is an integer greater than or equal to 2 and less than or equal to n.

The α _offset can be predefined or configured by higher layer signaling.

The communication method according to the embodiment of the present invention is described above, and the network device and the UE according to the embodiment of the present invention will be described below with reference to FIG. 11 to FIG.

FIG. 11 is a schematic structural diagram of a network device 1100 according to an embodiment of the present invention. The network device 1100 shown in FIG. 11 may be used to implement the related processes of the network device in FIG. 1 , FIG. 3 , FIG. 5 or FIG. 8 . As shown in FIG. 11 , the network device 1100 may include a processing unit 1110 and a transceiver unit 1120 .

The processing unit 1110 may be configured to implement the function of at least one of the following steps: 110 in the method shown in FIG. 1 .

The transceiver unit 1120 may be configured to implement the function of at least one of the following steps: 120 in the method shown in FIG. 1 , 320 , 330 and 350 in the method shown in FIG. 3 , 520 , 530 , 550 and 570 in the method shown in FIG. 5 , and FIG. 8 810 and 830 in the method shown.

Relevant details can be referred to the above method embodiments in combination, and to avoid repetition, details are not repeated here. FIG. 12 is a schematic structural diagram of a network device 1200 according to another embodiment of the present invention. As shown in FIG. 12 , the network device 1200 includes a processor 1210, a transceiver 1220 and a memory 1230. The processor 1210, the transceiver 1220 and the memory 1230 communicate with each other through an internal connection path to transmit control signals and/or data signals. The memory 1230 is used for storing instructions, and the processor 1210 is used for executing the instructions stored in the memory 1230 . The transceiver 1220 is used to transmit and receive signals under the control of the processor 1210 .

Specifically, the transceiver 1220 is used to implement the function of the transceiver unit 1120 in the network device 1100 shown in FIG. 11 . The processor 1210 is used to implement the functions of the processing unit 1110 in the network device 1100 shown in FIG. 11 , and for brevity, details are not repeated here.

FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. The user equipment shown in FIG. 13 may be used to implement the related processes of the user equipment in FIG. 1 , FIG. 3 , FIG. 5 or FIG. 8 . As shown in FIG. 13 , the user equipment may include a processing unit 1310 and a transceiving unit 1320 .

The processing unit 1310 may be used to implement 140 in the method shown in FIG. 1 , 340 and 360 in the method shown in FIG. 3 , and 540 , 560 and 580 in the method shown in FIG. 5 .

The transceiver unit 1320 may be configured to implement the function of at least one of the following steps: 130 in the method shown in FIG. 1 , 310 in the method shown in FIG. 3 , 510 in the method shown in FIG. 5 , and 820 and 840 in the method shown in FIG. 8 .

Relevant details can be referred to the above method embodiments in combination, and to avoid repetition, details are not repeated here.

FIG. 14 is a schematic structural diagram of a terminal device 1400 according to another embodiment of the present invention. As shown in FIG. 14 , the terminal device 1400 includes a processor 1410, a transceiver 1420 and a memory 1430. The processor 1410, the transceiver 1420 and the memory 1430 communicate with each other through an internal connection path to transmit control signals and/or data signals. The memory 1430 is used for storing instructions, and the processor 1410 is used for executing the instructions stored in the memory 1430 . The transceiver 1420 is used to transmit and receive signals under the control of the processor 1410 .

Specifically, the transceiver 1420 is used to implement the function of the transceiver unit 1320 in the terminal device 1300 shown in FIG. 13 . The processor 1410 is used to implement the functions of the processing unit 1310 in the terminal device 1300 shown in FIG. 13 , and for brevity, details are not repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the various embodiments of the present invention are essentially, or the parts that make contributions to the prior art or the parts of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (12)

1. a communication method, is characterized in that, comprises: The network device determines the UE-specific search space resource according to the maximum bandwidth of the user equipment UE and the common search space resource, and the sequence number of the lowest resource block RB of the common search space resource and the sequence number of the lowest RB of the UE-specific search space resource satisfy the following relationship Mode:

in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the lowest RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, v is the transmission of the UE-specific search space resource in the frequency domain The number of RBs corresponding to the bandwidth, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W; The network device sends configuration information to the UE, where the configuration information is used to indicate the UE-specific search space resources, and the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or Equal to the maximum bandwidth of the UE. 2 . The method according to claim 1 , wherein a bandwidth of the common search space resource in the frequency domain is less than or equal to a minimum value among the maximum bandwidths of multiple UEs in a cell. 3 . 3. The method according to claim 1 or 2, wherein before the network device determines the UE-specific search space resource configured for the UE according to the maximum bandwidth of the user equipment UE and the common search space resource, the Methods also include: The network device receives the indication information reported by the UE, where the indication information is used to indicate the maximum bandwidth of the UE. 4. A communication method, characterized in that, comprising: The user equipment UE receives configuration information sent by the network device, where the configuration information is used to indicate UE-specific search space resources configured for the UE, and the UE-specific search space resources are based on the maximum bandwidth and common search space resources of the UE It is determined that the sequence number of the lowest resource block RB of the common search space resource and the sequence number of the lowest RB of the UE-specific search space resource satisfy the following relationship:

in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the lowest RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, v is the transmission of the UE-specific search space resource in the frequency domain The number of RBs corresponding to the bandwidth, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W; The UE uses the UE-specific search space resources to detect UE-specific downlink control information according to the configuration information, and the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or equal to the UE-specific search space resources maximum bandwidth. 5 . The method according to claim 4 , wherein a bandwidth of the common search space resource in the frequency domain is less than or equal to a minimum value among the maximum bandwidths of multiple UEs in a cell. 6 . 6. The method according to claim 4 or 5, characterized in that, further comprising: The UE sends indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE. 7. A network device, comprising: A processing unit, configured to determine the UE-specific search space resource according to the maximum bandwidth of the user equipment UE and the common search space resource, the sequence number of the lowest resource block RB of the common search space resource and the sequence number of the lowest RB of the UE-specific search space resource Satisfy the following relation:

in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the lowest RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, v is the transmission of the UE-specific search space resource in the frequency domain The number of RBs corresponding to the bandwidth, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W; a transceiver unit, configured to send configuration information to the UE, where the configuration information is used to indicate the UE-specific search space resource determined by the processing unit, Wherein, the total bandwidth of the UE-specific search space resources and the common search space resources in the frequency domain is less than or equal to the maximum bandwidth of the UE. 8 . The network device according to claim 7 , wherein a bandwidth of the common search space resource in the frequency domain is less than or equal to a minimum value among the maximum bandwidths of multiple UEs in a cell. 9 . 9. The network device according to claim 7 or 8, wherein, The transceiver unit is further configured to receive indication information reported by the UE, where the indication information is used to indicate the maximum bandwidth of the UE. 10. A user equipment UE, comprising: A transceiver unit, configured to receive configuration information sent by a network device, where the configuration information is used to indicate a UE-specific search space resource configured for the UE, and the UE-specific search space resource is based on the maximum bandwidth of the UE and a common search space resource. If the space resource is determined, the sequence number of the lowest resource block RB of the common search space resource and the sequence number of the lowest RB of the UE-specific search space resource satisfy the following relationship:

in,

is the sequence number of the lowest RB of the common search space resource,

is the sequence number of the lowest RB of the UE-specific search space resource, w is the number of RBs corresponding to the transmission bandwidth of the common search space resource in the frequency domain, v is the transmission of the UE-specific search space resource in the frequency domain The number of RBs corresponding to the bandwidth, W is the number of RBs corresponding to the maximum bandwidth of the UE, v≤W; a processing unit for the UE to detect UE-specific downlink control information by using the UE-specific search space resources according to the configuration information received by the transceiver unit, wherein the UE-specific search space resources and the common search space The total bandwidth of the resource in the frequency domain is less than or equal to the maximum bandwidth of the UE. The user equipment according to claim 10, wherein a bandwidth of the common search space resource in the frequency domain is less than or equal to a minimum value among the maximum bandwidths of multiple UEs in a cell. 12. The user equipment according to claim 10 or 11, wherein, The transceiver unit is further configured to send indication information to the network device, where the indication information is used to indicate the maximum bandwidth of the UE.

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