CN111757420A

CN111757420A - Communication method and device

Info

Publication number: CN111757420A
Application number: CN201910252612.2A
Authority: CN
Inventors: 刘建琴
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-09
Anticipated expiration: 2039-03-29
Also published as: CN111757420B

Abstract

The application discloses a communication method and device. The method comprises the following steps: the method comprises the steps that terminal equipment receives at least one public signal block and obtains repeated information of the public signal block; determining the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information; and receiving control information on the control channel according to the offset. A corresponding apparatus is also disclosed. By adopting the scheme of the application, in the configuration process of the control channel, the condition that the common signal block is possibly subjected to repeated transmission is considered, the subcarrier interval of the newly added control channel and the common signal block is considered, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is determined according to the repeated information of the common signal block, the control information is received on the control channel according to the offset, the control information can be timely and accurately received, and the access performance of the terminal equipment is ensured.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

When a terminal device needs to access a network, cell search needs to be performed first to acquire cell system information. In a New Release (NR) communication system, a new design is adopted for a synchronization signal, and a concept of a synchronization signal/broadcast channel block (SS/PBCH block) is defined. Wherein, one SS/PBCH block occupies 4 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the SS/PBCH block includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSs), and a Physical Broadcast Channel (PBCH). In the unlicensed band, the SS/PBCH block may be multiplexed with other signals for transmission within a Discovery Reference Signal (DRS) window. To combat the effects of possible channel sensing failures, multiple candidate SS/PBCH blocks may be transmitted multiple times over a period of time, and may have different mapping patterns in time domain configuration corresponding to different subcarrier spacing (SCS).

After the cell search procedure, the terminal device has already acquired downlink synchronization with the cell, and the terminal device needs to further acquire system information (system information) of the cell in order to access the cell and operate correctly in the cell. Herein, the minimum remaining system information (RMSI) is scheduled by a Physical Downlink Control Channel (PDCCH) and transmitted in a Physical Downlink Shared Channel (PDSCH). Configuration information related to a control resource set (CORESET) of RMSI associated with the SS/PBCH block is included in a Master Information Block (MIB) in the SS/PBCH block.

The NR supports time domain configuration of multiple subcarrier intervals, minimum channel bandwidth and flexible and complicated SS/PBCH block, and there are more combinations in the NR unlicensed band, and in addition, unlike the licensed band, transmission of the SS/PBCH block in the NR unlicensed band needs to meet regulatory requirements (i.e., 80% of the occupation requirement of the channel bandwidth), and therefore the SS/PBCH block may be transmitted repeatedly in the frequency domain, and therefore, a completely new design needs to be performed on the corresponding RMSI CORESET configuration.

In the configuration mode of the RMSI CORESET multiplexing pattern in the prior art, the frequency domain resource position indication of the RMSI CORESET does not consider the combination condition of the newly added subcarrier spacing and the minimum channel bandwidth, and the prior art does not consider the condition that the SS/PBCH block may perform repeated transmission in the frequency domain at all, so the current frequency domain resource position indication of the RMSI CORESET cannot be applied to a new scene, thereby causing the frequency domain resource position indication error of the RMSI CORESET, causing the time delay of control channel transmission to be increased, and affecting the access performance of the terminal device.

Disclosure of Invention

The application provides a communication method and device, which can be applied to communication systems, such as V2X, LTE-V, V2V, Internet of vehicles, MTC, IoT, LTE-M, M2M, Internet of things, 5G and the like, so as to realize timely and accurate receiving of control information by terminal equipment and guarantee access performance of the terminal equipment.

In a first aspect, a communication method is provided, the method including: the method comprises the steps that terminal equipment receives at least one public signal block and obtains repeated information of the public signal block; the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information; and the terminal equipment receives control information on the control channel according to the offset. In the aspect, in the configuration process of the control channel, a situation that the common signal block may be subjected to repeated transmission is considered, the subcarrier interval of the newly added control channel and the common signal block is considered, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is determined according to the repeated information of the common signal block, and the control information is received on the control channel according to the offset, so that the control information can be timely and accurately received, and the access performance of the terminal equipment is ensured.

In one implementation, the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 20 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of: x Resource Blocks (RBs); (X-5) RBs; (X-10) RBs; (X-15) RBs; wherein X is a positive integer, and 15 ═ X < (28). In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted and the offset is related to at least one of the bandwidth of the control channel, the subcarrier spacing of the common signal block, the subcarrier spacing of the control channel, and the minimum channel bandwidth of the terminal device, the terminal device may determine a possible offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offset.

In another implementation, the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 40 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block; wherein X is a positive integer, and 11 ═ X < ═ 76. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In yet another implementation, the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 60kHz, and the minimum channel bandwidth of the terminal device is 40 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of: x RB; (X-1) RBs; (X-2) RBs; (X-3) RBs; (X-4) RBs; (X-5) RBs; (X-6) RBs; (X-7) RBs; (X-8) RBs; (X-9) RBs; wherein X is a positive integer, and 9 ═ X < ═ 14. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In yet another implementation, the subcarrier spacing of the common signal block is 15kHz, the subcarrier spacing of the control channel is 15kHz, and the minimum channel bandwidth of the terminal device is 20 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block; wherein X is a positive integer, and 11 ═ X < ═ 76.

In yet another implementation, when the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the offset is related to at least one of a bandwidth of a control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, and a minimum channel bandwidth of the terminal device. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In yet another implementation, if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted, the offset is related to at least one of the repetition information of the common signal block, a bandwidth of the control channel, a subcarrier spacing of the common signal block, and a subcarrier spacing of the control channel. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In yet another implementation, the repetition information of the common signal block includes a number of repetitions of the common signal block.

In yet another implementation, the method further comprises: and the terminal device receives indication information, wherein the indication information is used for indicating the assumed minimum channel bandwidth value of the terminal device when the terminal device receives the control channel.

In a second aspect, a communication method is provided, where the method includes: the network side equipment transmits at least one public signal block; the network side equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information of the common signal block; and the network side equipment sends control information on a control channel according to the offset.

In one implementation, the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 20 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of: x resource blocks RB; (X-5) RBs; (X-10) RBs; (X-15) RBs; wherein X is a positive integer, and 15 ═ X < (28).

In another implementation, the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 40 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block; wherein X is a positive integer, and 11 ═ X < ═ 76.

In yet another implementation, the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 60kHz, and the minimum channel bandwidth of the terminal device is 40 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of: x RB; (X-1) RBs; (X-2) RBs; (X-3) RBs; (X-4) RBs; (X-5) RBs; (X-6) RBs; (X-7) RBs; (X-8) RBs; (X-9) RBs; wherein X is a positive integer, and 9 ═ X < ═ 14.

In yet another implementation, the offset is related to at least one of a bandwidth of the control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, and a minimum channel bandwidth of the terminal device if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted.

In yet another implementation, if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted, the offset is related to at least one of the repetition information of the common signal block, a bandwidth of the control channel, a subcarrier spacing of the common signal block, and a subcarrier spacing of the control channel.

In yet another implementation, the method further comprises: and the network side equipment sends indication information, wherein the indication information is used for indicating the terminal equipment to receive the assumed minimum channel bandwidth value of the terminal equipment when the terminal equipment receives the control channel.

In a third aspect, a communication apparatus is provided, the apparatus comprising: the receiving and transmitting unit is used for receiving at least one public signal block and acquiring repeated information of the public signal block; a processing unit, configured to determine, according to the repetition information, an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block; and the transceiver unit is further configured to receive control information on the control channel according to the offset.

In one implementation, the transceiver unit is further configured to receive indication information, where the indication information is used to indicate a minimum channel bandwidth value of the terminal device assumed when the terminal device receives the control channel.

In a fourth aspect, there is provided a communication apparatus, the apparatus comprising: a transceiving unit for transmitting at least one common signal block; a processing unit, configured to determine, according to repetition information of the common signal block, an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block; and the transceiver unit is further configured to send control information on a control channel according to the offset.

In one implementation, the transceiver unit is further configured to transmit indication information, where the indication information is used to indicate a minimum channel bandwidth value of a terminal device assumed when the terminal device receives the control channel.

In a fifth aspect, a communication device is provided, which includes a processor and a transceiver, the processor being coupled to the transceiver, and the processor being configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is further adapted to implement the first aspect or any of the methods when the processor executes the computer program or instructions.

In a sixth aspect, a communications apparatus is provided, which includes a processor and a transceiver, the processor being coupled to the transceiver and configured to execute a computer program or instructions to control the transceiver to receive and transmit information; the processor is further configured to implement the second aspect or any of the methods described herein when the processor executes the computer program or instructions.

In a seventh aspect, a communication method is provided, the method comprising: the method comprises the steps that terminal equipment receives a public signal block, the subcarrier interval of the public signal block is 30kHz, the subcarrier interval of a control channel is 30kHz, and the minimum channel bandwidth of the terminal equipment is 20 MHz; the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block to be one of the following types according to the frequency domain offset position of the minimum channel bandwidth and the common signal block which are different from each other: x resource blocks RB; (X-5) RBs; (X-10) RBs; (X-15) RBs; wherein X is a positive integer, and 15 ═ X < (28); and the terminal equipment receives control information on the control channel according to the offset. In this aspect, in the configuration procedure of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In an eighth aspect, a communication method is provided, the method comprising: the method comprises the steps that terminal equipment receives a public signal block, the subcarrier interval of the public signal block is 30kHz, the subcarrier interval of a control channel is 30kHz, and the minimum channel bandwidth of the terminal equipment is 40 MHz; the terminal equipment determines that the frequency domain position of a control channel has an offset of X RBs or (X-11) RBs relative to the frequency domain position of the public signal block according to the frequency domain offset position of the minimum channel bandwidth and the public signal block; wherein X is a positive integer, and 11 ═ X < ═ 76; and the terminal equipment receives control information on the control channel according to the offset. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In a ninth aspect, a communication method is provided, the method comprising: the method comprises the steps that terminal equipment receives a public signal block, the subcarrier interval of the public signal block is 30kHz, the subcarrier interval of a control channel is 60kHz, and the minimum channel bandwidth of the terminal equipment is 40 MHz; the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block to be one of the following types according to the frequency domain offset position of the minimum channel bandwidth and the common signal block which are different from each other: x RB; (X-1) RBs; (X-2) RBs; (X-3) RBs; (X-4) RBs; (X-5) RBs; (X-6) RBs; (X-7) RBs; (X-8) RBs; (X-9) RBs; wherein, X is a positive integer, 9 ═ X < ═ 14; and the terminal equipment receives control information on the control channel according to the offset. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In a tenth aspect, there is provided a method of communication, the method comprising: the method comprises the steps that terminal equipment receives a public signal block, the subcarrier interval of the public signal block is 15kHz, the subcarrier interval of a control channel is 15kHz, and the minimum channel bandwidth of the terminal equipment is 20 MHz; the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block to be one of the following types according to the frequency domain offset position of the minimum channel bandwidth and the common signal block which are different from each other: x RB or (X-11) RB; wherein X is a positive integer, and 11 ═ X < ═ 76; and the terminal equipment receives control information on the control channel according to the offset. In this implementation, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the terminal device may determine possible offsets of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to the above parameters, and receive the control information on the control channel according to the possible offsets.

In an eleventh aspect, there is provided a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to perform the method of the above aspects.

In a twelfth aspect, a computer program product is provided comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

The drawings that are required to be used in this application, either in the examples or in the background, are described below.

Fig. 1 is a schematic diagram of a communication system to which the present application relates;

FIG. 2(a) is a schematic diagram of SSB and RMSI multiplexing pattern 1;

FIG. 2(b) is a schematic diagram of SSB and RMSI multiplexing pattern 2;

FIG. 2(c) is a schematic diagram of SSB and RMSI reuse pattern 3;

fig. 3 is a flowchart illustrating a communication method according to an embodiment of the present application;

FIG. 4 is a diagram illustrating the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block when the common signal block is repeatedly transmitted;

FIG. 5 is a diagram illustrating the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block when the common signal block is not repeatedly transmitted;

fig. 6 is a schematic diagram of various offsets of the frequency domain position of the traversal control channel with respect to the frequency domain position of the common signal block under combination 1 when the common signal block is not repeatedly transmitted;

fig. 7 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 8 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 9 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 10 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a simplified network-side device according to an embodiment of the present disclosure.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

The terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Fig. 1 presents a schematic view of a communication system to which the present application relates. The communication system may include at least one network-side device 100 (only 1 shown) and one or more terminal devices 200 connected to the network-side device 100.

The network-side device 100 may be a device that can communicate with the terminal device 200. The network side device 100 may be any device having a wireless transceiving function. Including but not limited to: a base station NodeB, an evolved node b, a base station in a fifth generation (5G) communication system, a base station or a network side device in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the like. The network side device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network-side device 100 may also be a small station, a Transmission Reference Point (TRP), or the like. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the network side device.

The terminal device 200 is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, hand-held, worn or vehicle-mounted; can also be deployed on the water surface, such as a ship and the like; and may also be deployed in the air, such as airplanes, balloons, satellites, and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. The embodiments of the present application do not limit the application scenarios. A terminal device may also sometimes be referred to as a User Equipment (UE), an access terminal device, a UE unit, a mobile station, a remote terminal device, a mobile device, a terminal (terminal), a wireless communication device, a UE agent, a UE device, or the like.

Based on the current NR protocol, three patterns for multiplexing SS/PBCH block and RMSI CORESET are defined:

fig. 2(a) is a schematic diagram of SSB and RMSI multiplexing pattern 1. In pattern 1, the SS/PBCH block and the RMSI CORESET are located at different times, and the transmission bandwidth of the SS/PBCH block overlaps with the initial active DL BWP (initial active DL BWP) containing the RMSI CORESET.

Fig. 2(b) is a schematic diagram of SSB and RMSI multiplexing pattern 2. In pattern 2, the SS/PBCH block and the RMSI CORESET are located at different times, and the transmission bandwidth of the SS/PBCH block does not overlap with the initial DL BWP containing the RMSI CORESET.

Fig. 2(c) is a schematic diagram of SSB and RMSI multiplexing pattern 3. In pattern 3, the SS/PBCH block and the RMSI CORESET are located at the same time, and the transmission bandwidth of the SS/PBCH block does not overlap with the initial DL BWP containing the RMSI CORESET.

Here, the initial active DL BWP is defined as a bandwidth including RMSI core.

The pattern 1 is generally used for low-frequency scenes, the SS/PBCH block and the RMSI CORESET in the patterns 2 and 3 are relatively fixed, and the selectable offset positions are limited and generally used for high-frequency scenes.

The scheme of the present application is described below by taking the pattern 1 as an example, but it should be noted that the scheme of the present application can be applied to any one of the patterns 1, 2 and 3, and is not limited to only the pattern 1.

In the configuration process of the control channel, the situation that the common signal block is possibly transmitted repeatedly is considered, the subcarrier interval of the newly added control channel and the common signal block is considered, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is determined according to the repeated information of the common signal block, the control information is received on the control channel according to the offset, the control information can be timely and accurately received, and the access performance of the terminal equipment is ensured.

Please refer to fig. 3, which is a flowchart illustrating a communication method according to an embodiment of the present application, including the following steps:

s101, the network side equipment sends at least one public signal block.

Accordingly, the terminal device receives the at least one common signal block.

In this application, the common signal block comprises PSS, SSS and PBCH, i.e. the common signal block comprises SS/PBCH block. It should be understood that the common signal block may also be other common signals besides the SS/PBCH block, such as a System Information Block (SIB), a paging channel, etc., and is not limited herein. In the following description, the common signal block is referred to as SS/PBCH block in the embodiments of the present application, but the present application is not limited thereto.

The network side equipment broadcasts the public signal block, and the terminal equipment realizes the synchronization with the cell by receiving the public signal block.

Specifically, the common signal blocks occupy 20 Resource Blocks (RBs) fixedly in the frequency domain, and at small subcarrier intervals, e.g., 15kHz or 30kHz, a single common signal block transmission may not meet at least 80% of the required channel occupancy requirements imposed by regulations in the NR unlicensed band. To meet regulatory requirements, the common signal block may be repeatedly transmitted in the frequency domain, e.g., twice within the transmission bandwidth to meet at least 80% of the duty cycle. Thus, the network side device may broadcast one or more common signal blocks. The terminal device receives the one or more common signal blocks to achieve synchronization with the cell.

S102, the terminal equipment acquires the repeated information of the public signal block.

If the network side device actually performs repeated transmission, the terminal device needs to acquire the repeated information of the common signal block, i.e. determine whether the common signal block is repeatedly transmitted. Specifically, the repetition information includes the number of repetitions of the common signal block. For example, the number of repetitions is 1, which means that 1 time of the common signal block is repeatedly transmitted, in other words, the network side device transmits 2 common signal blocks; the number of repetitions is 2, which means that the common signal block is repeatedly transmitted 2 times, in other words, the network side device transmits 3 common signal blocks. For another example, the number of repetitions is 1, which means that the common signal block is not repeatedly transmitted, in other words, the network side device transmits 1 common signal block. The network side equipment can clearly indicate the repeated information to the terminal equipment, and the terminal equipment acquires the repeated information of the common signal block according to the indication; the terminal device may also obtain the repeated information of the common signal block according to the number of the actually received common signal blocks, which is not limited herein.

S103, the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information.

When the common signal block is repeatedly transmitted in the frequency domain, the multiple repeatedly transmitted common signal blocks usually occupy almost the entire transmission bandwidth, and therefore, the frequency domain position of the control channel can be accurately determined based on the multiple repeatedly transmitted common signal blocks without traversing the positions of possible multiple different candidate minimum channel bandwidths. Therefore, when the common signal block is repeatedly transmitted in the frequency domain, the frequency domain position indication of the control channel can be simplified.

In one possible design, if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted, an offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is independent of a minimum channel bandwidth of the terminal device, and is only related to at least one of the repetition information of the common signal block, the bandwidth of the control channel, the subcarrier spacing of the common signal block, and the subcarrier spacing of the control channel. That is, the terminal device may determine an offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block based on at least one of the repetition information of the common signal block, the bandwidth of the control channel, the subcarrier spacing of the common signal block, and the subcarrier spacing of the control channel.

Alternatively, the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block may be any integer greater than or equal to the difference between the bandwidth of the control channel and the bandwidth of the common signal block. Therefore, the terminal equipment does not need to search and detect a plurality of tables corresponding to the minimum channel bandwidths of different terminal equipment, and therefore the detection complexity of the terminal equipment can be greatly reduced.

The control channel may be a control channel carrying control information of the RMSI, that is, a control channel of the RMSI. The control channel may also be a control channel of Other System Information (OSI), a control channel of a paging channel, a control channel of a random access response, or the like, and is not limited herein.

In another possible design, when the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, an offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is related to at least one of a bandwidth of the control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, and a minimum channel bandwidth of the terminal device. That is, the offset amount is related not only to the bandwidth of the control channel, the subcarrier spacing of the common signal block, the subcarrier spacing of the control channel, but also to the minimum channel bandwidth of the terminal device. The terminal device may determine an offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block according to at least one of a bandwidth of the control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, and a minimum channel bandwidth of the terminal device.

Further, before S103, the method may further include the step of: the network side equipment sends indication information, the terminal equipment receives the indication information, and the indication information is used for indicating the assumed minimum channel bandwidth value of the terminal equipment when the terminal equipment receives the control channel. Thus, the terminal device can determine the minimum channel bandwidth value of the terminal device according to the indication information.

And S104, the network side equipment sends control information on the control channel according to the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block.

Correspondingly, the terminal equipment receives control information on the control channel according to the offset.

The network side device may determine an offset of the frequency domain position of the control channel from the frequency domain position of the common signal block according to the repetition information of the common signal block, and transmit control information on the control channel according to the offset, for example, transmit control information of the RMSI on a Physical Downlink Control Channel (PDCCH). And after the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information of the common signal block, the terminal equipment receives the control information sent by the network side equipment on the determined control channel according to the offset.

The scheme of the application can be used for an isolated cell scene of independent deployment, can also be used for a scene of non-independent deployment, and is not limited here. It should be noted that for a scenario of non-independent deployment, the minimum channel bandwidth by which the terminal device resolves may be configured by the network side.

According to the communication method provided by the embodiment of the application, in the configuration process of the control channel, the situation that the common signal block is possibly subjected to repeated transmission is considered, the subcarrier interval of the newly added control channel and the common signal block is considered, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is determined according to the repeated information of the common signal block, the control information is received on the control channel according to the offset, the control information can be timely and accurately received, and the access performance of the terminal equipment is ensured.

When the common signal block shown in fig. 4 is repeatedly transmitted, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is shown schematically, two common signal blocks (common signal block 1 and common signal block 2 shown in fig. 4) are repeatedly transmitted within the minimum channel bandwidth, and the terminal device determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repetition information, which may be any one of offset 1, offset 2 or offset 3 shown in fig. 4. Similarly, in the minimum channel bandwidth, four common signal blocks are repeatedly transmitted, and the terminal device determines, from the repetition information, that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block may be one of a plurality of candidate offsets.

In specific implementation, the parameters preconfigured on the network side and the terminal device side are shown in table 1, and are used to indicate possible offsets of the frequency domain positions of the control channels when the common signal block is repeatedly transmitted. According to the table and the indication of the index of the offset by the network side device, the terminal device can determine the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block.

In table 1, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 4, when the number of resource blocks occupied by CORESET is 48 RBs, 2 repeated common signal blocks (SS/PBCH block) are corresponded, that is, 2 common signal blocks are transmitted in the minimum channel bandwidth, the bandwidth of the control channel is 48 RBs, and the multiplexing pattern of the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) adopts pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of 28 RBs, 30 RBs, 32 RBs, and 34 RBs (hereinafter collectively expressed as (28,30,32, 34)). In indexes 5-8, when the number of resource blocks occupied by CORESET is 96 RBs, corresponding to 4 repeated common signal blocks (SS/PBCH blocks), i.e., when 4 common signal blocks are transmitted in the minimum channel bandwidth, the bandwidth of the control channel is 96 RBs, and the multiplexing pattern of the common signal blocks and the control channel adopts pattern 1, the frequency domain position of the control channel may be shifted by any one of 76 RBs, 78 RBs, 80 RBs, and 82 RBs (hereinafter, collectively expressed as (76,78,80, 82)).

Table 1 is pre-stored in the network side and the terminal device, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 28 RBs corresponding to index number 1. And so on.

It is understood that the contents of indexes 1-4 may be in the same table as the contents of indexes 5-8, or may be in different tables.

TABLE 1 possible offsets of frequency domain positions of control channels upon repeated transmission of common signal blocks

It should be understood that table 1 above is only an exemplary design of the offset of the control channel when the common signal block is repeated, and does not exclude that other candidate offset values may also exist, as long as any integer greater than or equal to the difference between the bandwidth of the control channel and the bandwidth of the common signal block is satisfied, and is not specifically limited herein.

As shown in fig. 5, when the common signal block is not repeatedly transmitted, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is schematically shown, only one common signal block (a white long box shown in fig. 5) is transmitted within a minimum channel bandwidth, and the control channel has four possible frequency domain positions (four boxes represent the minimum channel bandwidth) in the minimum channel bandwidth for one offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the frequency domain position of the control channel (a shaded long box shown in fig. 5) in the minimum channel bandwidth or according to the frequency domain position relationship among the common signal block, the control channel and the minimum channel bandwidth, or the offset is referred to be applicable to the frequency domain positions of the four possible control channels in the minimum channel bandwidth.

For the aforementioned subcarrier spacing of the new common signal block, subcarrier spacing of the new control channel, and minimum channel bandwidth, there are illustratively several combinations:

combination 1: (subcarrier spacing of common signal block: 30kHz, subcarrier spacing of control channel: 30kHz) + minimum channel bandwidth of terminal device 20 MHz;

and (3) combination 2: (subcarrier spacing of common signal block: 30kHz, subcarrier spacing of control channel: 30kHz) + minimum channel bandwidth of terminal device 40MHz, with larger bandwidth of control channel (e.g., 96 RB);

and (3) combination: (subcarrier spacing of common signal block: 30kHz, subcarrier spacing of control channel: 60kHz) + minimum channel bandwidth of terminal device 20 MHz;

and (4) combination: (subcarrier spacing of common signal block: 15kHz, subcarrier spacing of control channel: 15kHz) + minimum channel bandwidth of terminal device 20 MHz.

The offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is determined separately for each combination as follows:

combination 1:

as shown in fig. 6, when the common signal block is not repeatedly transmitted, the combination 1 is a diagram of various offsets of the frequency domain position of the traversal control channel with respect to the frequency domain position of the common signal block, and the minimum channel bandwidth (system bandwidth) of the terminal device is 20MHz, including 52 RBs (dashed box shown in fig. 6). The subcarrier spacing of the common signal block is 30kHz, the frequency domain granularity (i.e., SS raster) of the search common signal block is 7.2MHz, including 20 RBs (e.g., white long boxes in the dashed box labeled 0 in fig. 6). The sub-carrier spacing of the control channel is 30kHz and includes 48 RBs (e.g., the shaded long boxes in the dashed box labeled 0 in fig. 6).

As shown in fig. 6, there are 52-20+ 1-33 possibilities for the 20MHz system bandwidth relative to the frequency domain of one common signal block, calculated according to the offset value of 1 RB. Since the 52-48 balance between the system bandwidth and the control channel is 4 RBs plus a 1 RB offset, the amount of offset of the frequency domain position of each control channel with respect to the frequency domain position of the common signal block can be applied to 5 possibilities at the most. As shown in fig. 6, for the first set of patterns (labeled 0-4 in the figure), the offset is 48-20 to 28 RBs for which there are at most 5 possible frequency domain positions of the control channel in the smallest channel bandwidth; for the second set of patterns (labeled 5-9 in the figure), the offset is 48-5-20 to 23 RBs, and the control channel has at most 5 possible frequency domain positions in the minimum channel bandwidth; for the third set of patterns (labeled 10-14 in the figure), the offset is 48-10-20 to 18 RBs, and the control channel has at most 5 possible frequency domain positions in the minimum channel bandwidth; for the fourth set of patterns (labeled 15-19 in the figure), the offset is 48-15-20 to 13 RBs, and the control channel has at most 5 possible frequency domain positions in the minimum channel bandwidth.

Since the SS raster is 20 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 20RB, i.e., the fifth group pattern (patterns denoted by reference numerals 20 to 24) is the repetition of the first group pattern, the sixth group pattern (patterns denoted by reference numerals 25 to 29) is the repetition of the second group pattern, and so on. That is, the previous four sets of patterns/four offsets (including the possible frequency domain positions of the 4 × 5 ═ 20 control channels in the minimum channel bandwidth) have traversed all possible offset cases at this sub-carrier spacing and minimum channel bandwidth combination. Thus, only 4 possible offsets are needed for a 20MHz system. For example, as previously described, the four possible offsets are (28,23,18, 13).

In a specific implementation, for the case that the possible offset is (28,23,18,13), the parameters pre-configured on the network side and the terminal device side are shown in table 2. In table 2, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 4, when the number of resource blocks occupied by CORESET is 48 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 28 RBs, 23 RBs, 18 RBs, 13 RBs. If the network side and the terminal device store table 2 in advance, then when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 28 RBs corresponding to index number 1. And so on.

TABLE 2 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at a subcarrier spacing of 30kHz, a subcarrier spacing of 30kHz for the control channel and a minimum channel bandwidth of 20MHz for the common signal block

To ensure that the common signal block is as mid-way through the control channel as possible, e.g., moving the control channel up by one RB, the offset is 48-20-1-27 RBs for the first set of patterns for which the control channel has at most 5 possible frequency domain positions in the minimum channel bandwidth; for the second set of patterns, the offset is 48-5-20-1 ═ 22 RBs, and the control channel also has a maximum of 5 possible frequency domain positions in the minimum channel bandwidth; for the third set of patterns, the offset is 48-10-20-1 ═ 17 RBs, and the control channel also has a maximum of 5 possible frequency domain positions in the minimum channel bandwidth; for the fourth set of patterns, the offset is 48-15-20-1-12 RBs, and the control channel also has a maximum of 5 possible frequency domain positions in the minimum channel bandwidth. That is, the offset may be (27,22,17,12) RBs.

By analogy, the offset amount may also be (26,21,16,11), or (25,20,15,10), or (24,19,14,9), or (23,18,13,8), or (22,17,12,7), or (21,16,11,6), or (20,15,10,5), or (19,14,9,4), or (1813, 8,3), or (17,12,7,2), or (16,11,6,1), or (15,10,5,0), etc., that is, any four integers satisfying the difference between two adjacent candidate offset amount values equal to 5, such as (-20, -15, -10, -5), etc., are within the protection scope of the present application, and are not specifically limited herein.

It should be understood that table 2 above is merely an exemplary design of control channel offsets when common signal blocks are not repeated, and does not exclude that other candidate offset values may also be present. The size of the table is not limited to the size of table 2, and the number of bits required for the indication is not limited to 3 bits.

Then in one implementation, for the case where the possible offsets are (23,18,13,8), the parameters preconfigured on the network side and the terminal device side are shown in table 3. In table 3, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 4, when the number of resource blocks occupied by CORESET is 48 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 23 RBs, 18 RBs, 13 RBs, 8 RBs. Table 3 is pre-stored in the network side and the terminal device, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 23 RBs corresponding to index number 1. And so on.

TABLE 3 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz and minimum channel bandwidth of 20MHz for the common signal block

In yet another implementation, for the case where the possible offset is (21,16,11,6), the parameters pre-configured on the network side and the terminal device side are shown in table 4. In table 4, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 4, when the number of resource blocks occupied by CORESET is 48 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 21 RBs, 16 RBs, 11 RBs, 6 RBs. The network side and the terminal device pre-store table 4, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 21 RBs corresponding to index number 1. And so on.

TABLE 4 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz and minimum channel bandwidth of 20MHz for the common signal block

In yet another implementation, for the case where the possible offset is (28,23,18,13, 8,21,16,11,6), the parameters pre-configured on the network side and the terminal device side are shown in table 5. In table 5, taking the common signal block as SS/pbcch lock as an example, in indexes 1 to 9, when the number of resource blocks occupied by CORESET is 48 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 28 RBs, 23 RBs, 18 RBs, 13 RBs, 8 RBs, 21 RBs, 16 RBs, 11 RBs, 6 RBs. If the table 5 is pre-stored in the network side and the terminal device, when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 28 RBs corresponding to index number 1. And so on.

TABLE 5 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz and minimum channel bandwidth of 20MHz for the common signal block

It should be understood that the frequency domain position offset indication of the control channel when the common signal blocks are repeated and the frequency domain position offset indication of the control channel when the common signal blocks are not repeated may also be defined in a table, for example, the first half of the table is the offset indication value when the common signal blocks are not repeated, and the second half is the offset indication value when the common signal blocks are repeated, and the like, or vice versa, that is, the first half of the table is the offset indication value when the common signal blocks are repeated, and the second half is the offset indication value when the common signal blocks are not repeated, or any part of the table is the offset indication value when the common signal blocks are repeated, and the other part is the offset indication value when the common signal blocks are not repeated, and this is not particularly limited.

From this it can be concluded that: the subcarrier interval of the public signal block is 30kHz, the subcarrier interval of the control channel is 30kHz, and the minimum channel bandwidth of the terminal equipment is 20 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x resource blocks RB;

(X-5) RBs;

(X-10) RBs;

(X-15) RBs;

wherein X is a positive integer, and 15 ═ X < (28).

In one implementation, the possible offset for the above is any of: the parameters pre-configured on the network side and the terminal device side for X RBs, (X-5) RBs, (X-10) RBs, and (X-15) RBs are shown in Table 6. In table 6, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 4, when the number of resource blocks occupied by CORESET is 48 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: any of the following: x RBs, (X-5) RBs, (X-10) RBs, (X-15) RBs. The network side and the terminal device pre-store the table 6, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset X RBs corresponding to the index number 1. And so on.

TABLE 6 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz, and minimum channel bandwidth of 20MHz for the common signal block

And (3) combination 2:

the minimum channel bandwidth (system bandwidth) of the terminal device is 40MHz, and 106 RBs are included when subcarriers are spaced at 30 kHz. The subcarrier spacing of the common signal block is 30kHz, and the frequency domain granularity (i.e., SS ratter) of the search common signal block is 7.2MHz, including 20 RBs. The control channel has a subcarrier spacing of 30kHz and includes 96 RBs.

There are 87 possibilities, 106-20+1, for the 40MHz system bandwidth, relative to the frequency domain of one common signal block, calculated by an offset value of 1 RB.

Since 106-96 between the control channel and common signal blocks is the margin of 10 RBs plus an offset of 1 RB, the offset value of the frequency domain position of each control channel with respect to the frequency domain position of the common signal block can be applied to 11 possibilities at the most. The traversal can refer to the description of combination 1.

Since the SS raster is 20 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 20 RB. That is, the previous 2 offsets (2 × 11 ═ 22 possible frequency domain locations of control channels in the minimum channel bandwidth) have traversed the possible offset case for this subcarrier spacing and minimum channel bandwidth combination. Thus, only 2 possible offsets are needed for a 40MHz system. For example, the two possible offsets may be (43,32) or (44,33), the difference between the two offsets being 11 RBs.

In one implementation, for the case where the possible offset is (43,32), the parameters pre-configured on the network side and the terminal device side are shown in table 7. In table 7, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 43 RBs or 32 RBs with respect to the frequency domain position of the common signal block. If the network side and the terminal device pre-store table 7, then when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 43 RBs corresponding to index number 1. And so on.

TABLE 7 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz and minimum channel bandwidth of 40MHz for the common signal block

In another implementation, for the case where the possible offset is (44,33), the parameters pre-configured on the network side and the terminal device side are shown in table 8. In table 8, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 44 RBs or 33 RBs with respect to the frequency domain position of the common signal block. If the network side and the terminal device pre-store the table 8, then when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 44 RBs corresponding to index number 1. And so on.

TABLE 8 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz, and minimum channel bandwidth of 40MHz for the common signal block

In yet another implementation, for the case where the possible offset is (43,32,44,33), the parameters pre-configured on the network side and the terminal device side are shown in table 9. In table 9, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block may be any of the following values: 43 RBs, 32 RBs, 44 RBs, 33 RBs. The network side and the terminal device pre-store the table 9, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 43 RBs corresponding to the index number 1. And so on.

TABLE 9 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 30kHz, and minimum channel bandwidth of 40MHz for the common signal block

From this it can be concluded that: the subcarrier interval of the public signal block is 30kHz, the subcarrier interval of the control channel is 30kHz, and the minimum channel bandwidth of the terminal equipment is 40 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block;

wherein X is a positive integer, and 11 ═ X < ═ 76.

In one implementation, for the case where the possible offset is X RBs or (X-11) RBs, the parameters pre-configured on the network side and the terminal device side are shown in table 10. In table 10, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 10, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset X RBs corresponding to index number 1. And so on.

TABLE 10 possible offsets of frequency domain position of control channel when common signal blocks are not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of control channel of 30kHz, and minimum channel bandwidth of 40MHz for common signal blocks

And (3) combination:

the minimum channel bandwidth (system bandwidth) of the terminal device is 20MHz, and 24 RBs are included when the subcarriers are spaced at 60 kHz. The subcarrier spacing of the common signal block is 30kHz, the frequency domain granularity (i.e., SS ratter) of the search common signal block is 7.2MHz, including 10 RBs at subcarrier spacing of 60 kHz. The control channel has a subcarrier spacing of 60kHz and includes 24 RBs.

There are 5 possibilities of 24-20+1 for the 20MHz system relative to the frequency domain of one common signal block, calculated by an offset value of 1 RB.

Since 24-24 is a margin of 0 RBs plus an offset of 1 RB, the offset value of the frequency domain position of each control channel with respect to the frequency domain position of the common signal block can be applied to 1 possibility at most. The traversal can refer to the description of combination 1.

In addition, since the SS raster is 10 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 10 RBs.

Therefore, 10 offset values are required to satisfy the offset values for all 10MHz control channels. For example, the 10 offset values may be: (0-9), (1-10), (2-11), (3-12), (4-13), (5-14).

In one implementation, for the possible offset of (0-9), the parameters pre-configured on the network side and the terminal device side are shown in table 11. In table 11, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 0RB, 1 RB, 2 RB, 3 RB, 4 RB, 5 RB, 6RB, 7 RB, 8 RB, 9 RB. The network side and the terminal device pre-store the table 11, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 0RB corresponding to index number 1. And so on.

TABLE 11 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of control channels of 60kHz, and minimum channel bandwidth of 20MHz for common signal blocks

In another implementation, for the case where the possible offset is (1-10), the parameters pre-configured on the network side and the terminal device side are shown in table 12. In table 12, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 1 RB, 2 RB, 3 RB, 4 RB, 5 RB, 6RB, 7 RB, 8 RB, 9 RB, 10 RB. The network side and the terminal device pre-store the table 12, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 1 RB corresponding to index number 1. And so on.

TABLE 12 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of control channels of 60kHz, and minimum channel bandwidth of 20MHz for common signal blocks

In yet another implementation, for the case where the possible offset is (2-11), the parameters pre-configured on the network side and the terminal device side are shown in table 13. In table 13, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 2 RBs, 3 RBs, 4 RBs, 5 RBs, 6 RBs, 7 RBs, 8 RBs, 9 RBs, 10 RBs, 11 RBs. If the table 13 is pre-stored in the network side and the terminal device, when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 2 RBs corresponding to index number 1. And so on.

TABLE 13 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of control channels of 60kHz, and minimum channel bandwidth of 20MHz for common signal blocks

In yet another implementation, for the case where the possible offset is (3-12), the parameters pre-configured on the network side and the terminal device side are shown in table 14. In table 14, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 3 RBs, 4 RBs, 5 RBs, 6 RBs, 7 RBs, 8 RBs, 9 RBs, 10 RBs, 11 RBs, 12 RBs. The network side and the terminal device pre-store the table 14, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 1 RB corresponding to index number 1. And so on.

TABLE 14 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing 30kHz, subcarrier spacing 60kHz for the control channel and minimum channel bandwidth 20MHz for the common signal block

In yet another implementation, for the above possible offset amount being (4-13), the parameters pre-configured on the network side and the terminal device side are shown in table 15. In table 15, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 4 RBs, 5 RBs, 6 RBs, 7 RBs, 8 RBs, 9 RBs, 10 RBs, 11 RBs, 12 RBs, 13 RBs. The network side and the terminal device pre-store the table 15, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 4 RBs corresponding to the index number 1. And so on.

TABLE 15 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of control channels of 60kHz, and minimum channel bandwidth of 20MHz for common signal blocks

In yet another implementation, for the possible offset of (5-14), the parameters pre-configured on the network side and the terminal device side are shown in table 16. In table 16, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 5 RBs, 6 RBs, 7 RBs, 8 RBs, 9 RBs, 10 RBs, 14 RBs. The network side and the terminal device pre-store the table 16, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 5 RBs corresponding to the index number 1. And so on.

TABLE 16 possible offsets of the frequency domain position of the control channel when the common signal blocks are not repeatedly transmitted at subcarrier spacing of 30kHz, subcarrier spacing of the control channel of 60kHz, and minimum channel bandwidth of 20MHz for the common signal blocks

In yet another implementation, for the case where the possible offset is (0-14), the parameters pre-configured on the network side and the terminal device side are shown in table 17. In table 17, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 15, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: 1 RB, 2 RBs, 3 RBs, 4 RBs, 5 RBs, 6 RBs, 7 RBs, 8 RBs, 9 RBs, 10 RBs, 11 RBs, 12 RBs, 13 RBs, 14 RBs. The network side and the terminal device pre-store the table 17, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 1 RB corresponding to index number 1. And so on.

TABLE 17 possible offsets of frequency domain position of control channel when common signal block is not repeatedly transmitted at subcarrier spacing 30kHz, subcarrier spacing 60kHz for control channel and minimum channel bandwidth 20MHz for common signal block

From this it can be concluded that: the subcarrier interval of the public signal block is 30kHz, the subcarrier interval of the control channel is 60kHz, and the minimum channel bandwidth of the terminal equipment is 40 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x RB;

(X-1) RBs;

(X-2) RBs;

(X-3) RBs;

(X-4) RBs;

(X-5) RBs;

(X-6) RBs;

(X-7) RBs;

(X-8) RBs;

(X-9) RBs;

wherein X is a positive integer, and 9 ═ X < ═ 14.

In one implementation, the possible offset for the above is one of: x RB; (X-1) RBs; (X-2) RBs; (X-3) RBs; (X-4) RBs; (X-5) RBs; (X-6) RBs; (X-7) RBs; (X-8) RBs; in the case of (X-9) RBs, the parameters preconfigured on the network side and the terminal device side are shown in Table 18. In table 18, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 10, when the number of resource blocks occupied by CORESET is 24 RBs, and the common signal block and the control channel (the multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following values: x RB; (X-1) RBs; (X-2) RBs; (X-3) RBs; (X-4) RBs; (X-5) RBs; (X-6) RBs; (X-7) RBs; (X-8) RBs; (X-9) RBs. The network side and the terminal device pre-store the table 18, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset X RBs corresponding to index number 1. And so on.

TABLE 18 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 30kHz, subcarrier spacing 60kHz for control channels and minimum channel bandwidth 20MHz for common signal blocks

And (4) combination:

the minimum channel bandwidth (system bandwidth) of the terminal device is 20MHz, and 106 RBs are included when subcarriers are spaced at 15 kHz. The subcarrier spacing of the common signal block is 15kHz, and the frequency domain granularity (i.e., SS ratter) of the search common signal block is 7.2MHz, including 20 RBs. The control channel has subcarrier spacing of 15kHz and includes 96 RBs.

There are 87 possibilities of 106-20+1 for the 20MHz system bandwidth versus the frequency domain of one common signal block, calculated by an offset value of 1 RB.

Since the SS raster is 20 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 20 RB. That is, the previous 2 offsets (2 × 11 ═ 22 possible frequency domain locations of control channels in the minimum channel bandwidth) have traversed the possible offset case for this subcarrier spacing and minimum channel bandwidth combination. Thus, only 2 possible offsets are needed for a 20MHz system. For example, the two possible offsets may be (38,27), or (39,28), or (40,29), or (41,30), or (42,31), or (43,32), or (44,33), or (45,34), the difference between the two offsets being 11.

In one implementation, for the case where the possible offset is (38,27), the parameters pre-configured on the network side and the terminal device side are shown in table 19. In table 19, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 38 RBs or 27 RBs with respect to the frequency domain position of the common signal block. Table 3 is pre-stored in the network side and the terminal device, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 38 RBs corresponding to index number 1. And so on.

TABLE 19 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, control channel subcarrier spacing 15kHz, and minimum channel bandwidth 20MHz for common signal blocks

In another implementation, for the case where the possible offset is (39,28), the parameters pre-configured on the network side and the terminal device side are shown in table 20. In table 20, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 39 RBs or 28 RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 20, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is 39 RBs corresponding to the index number 1. And so on.

TABLE 20 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing 15kHz, subcarrier spacing 15kHz for the control channel and minimum channel bandwidth 20MHz for the common signal block

In yet another implementation, for the case where the possible offset is (40,29), the parameters pre-configured on the network side and the terminal device side are shown in table 21. In table 21, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset by 40 RBs or 29 RBs with respect to the frequency domain position of the common signal block. In specific implementation, the network side and the terminal device pre-store the table 21, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device may determine that the offset of the frequency domain position of the control channel with respect to the frequency domain position of the common signal block is offset 40 RBs corresponding to index number 1. And so on.

TABLE 21 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, control channel subcarrier spacing 15kHz, and minimum channel bandwidth 20MHz for common signal blocks

In yet another implementation, for the case where the possible offset is (41,30), the parameters pre-configured on the network side and the terminal device side are shown in table 22. In table 22, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset by 41 RBs or 30 RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 22, and when the terminal device receives an index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 41 RBs corresponding to the index number 1. And so on.

TABLE 22 possible offsets of the frequency domain position of the control channel when the common signal block is not repeatedly transmitted at subcarrier spacing 15kHz, subcarrier spacing 15kHz for the control channel and minimum channel bandwidth 20MHz for the common signal block

In yet another implementation, for the case where the possible offset is (42,31), the parameters pre-configured on the network side and the terminal device side are shown in table 23. In table 23, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset by 42 RBs or 31 RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 23, and when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 42 RBs corresponding to the index number 1. And so on.

TABLE 23 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, control channel subcarrier spacing 15kHz, and minimum channel bandwidth 20MHz for common signal blocks

In yet another implementation, for the case where the possible offset is (43,32), the parameters pre-configured on the network side and the terminal device side are shown in table 24. In table 24, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 43 RBs or 32 RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 24, and when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 43 RBs corresponding to the index number 1. And so on.

TABLE 24 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, control channel subcarrier spacing 15kHz, and minimum channel bandwidth 20MHz for common signal blocks

In yet another implementation, for the case where the possible offset is (44,33), the parameters pre-configured on the network side and the terminal device side are shown in table 25. In table 25, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 44 RBs or 33 RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 25, and when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 44 RBs corresponding to the index number 1. And so on.

TABLE 25 possible offsets of the frequency domain position of the control channel when the common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, subcarrier spacing 15kHz for the control channel and minimum channel bandwidth 20MHz for the common signal blocks

In yet another implementation, for the case where the possible offset is (45,34), the parameters pre-configured on the network side and the terminal device side are shown in table 26. In table 26, taking the common signal block as SS/PBCH block as an example, in indexes 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be shifted by 45 RBs or 34 RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 26, and when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 45 RBs corresponding to the index number 1. And so on.

TABLE 26 possible offsets of frequency domain position of control channel when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, subcarrier spacing 15kHz for control channel and minimum channel bandwidth 20MHz for common signal blocks

In yet another implementation, the network-side and terminal device-side preconfigured parameters for the case of the possible offsets (38,27,39,28,40,29,41,30,42,31,43,32,44,33,45,34) described above are shown in table 27. In table 27, taking the common signal block as SS/PBCH block as an example, in indexes 1 to 16, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset from the frequency domain position of the common signal block by any one of the following: 38 RBs, 27 RBs, 39 RBs, 28 RBs, 40 RBs, 29 RBs, 41 RBs, 30 RBs, 42 RBs, 31 RBs, 43 RBs, 32 RBs, 44 RBs, 33 RBs, 45 RBs, 34 RBs. The network side and the terminal device pre-store the table 27, and when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset 38 RBs corresponding to the index number 1. And so on.

TABLE 27 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, control channel subcarrier spacing 15kHz, and minimum channel bandwidth 20MHz for common signal blocks

From this it can be concluded that: the subcarrier interval of the public signal block is 15kHz, the subcarrier interval of the control channel is 15kHz, and the minimum channel bandwidth of the terminal equipment is 20 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block;

wherein X is a positive integer, and 11 ═ X < ═ 76.

In one implementation, for the case where the possible offset is X RBs or (X-11) RBs, the parameters pre-configured on the network side and the terminal device side are shown in table 28. In table 28, taking the common signal block as SS/PBCH block as an example, in index 1-2, when the number of resource blocks occupied by CORESET is 96 RBs, and the common signal block and the control channel (multiplexing pattern of SS/PBCH block and CORESET) are multiplexed by using pattern 1, the frequency domain position of the control channel may be offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block. The network side and the terminal device pre-store the table 28, and when the terminal device receives the index indication sent by the network side, for example, the indication offset index is index number 1, the terminal device can determine that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is offset X RBs corresponding to index number 1. And so on.

TABLE 28 possible offsets of frequency domain positions of control channels when common signal blocks are not repeatedly transmitted at subcarrier spacing 15kHz, control channel subcarrier spacing 15kHz, and minimum channel bandwidth 20MHz for common signal blocks

It should be understood that the offset of the control channel frequency domain position relative to the common signal block frequency domain position in all the above embodiments may be a positive integer, a negative integer, or even a real number, and is not limited specifically here.

Fig. 7 is a flowchart of another communication method according to an embodiment of the present application, including the following steps:

s201, the network side equipment sends a public signal block.

Accordingly, the terminal device receives the common signal block.

The network side equipment broadcasts the public signal block, and the terminal equipment realizes the synchronization with the cell by receiving the public signal block. In this embodiment, the network side device does not repeatedly transmit the common signal block. The subcarrier interval of the common signal block is 30kHz, the subcarrier interval of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 20 MHz.

S202, the terminal device determines that an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block is one of: x resource blocks RB; (X-5) RBs; (X-10) RBs; (X-15) RBs; wherein X is a positive integer, and 15 ═ X < (28).

The minimum channel bandwidth (system bandwidth) of the terminal device is 20MHz, including 52 RBs. The subcarrier spacing of the common signal block is 30kHz, the frequency domain granularity of the search common signal block, also referred to as a grid on the frequency domain of the search common signal block, i.e., a synchronization signal raster (SS raster), is 7.2MHz, including 20 RBs. The control channel has a subcarrier spacing of 30kHz and includes 48 RBs.

When the common signal block is not transmitted repeatedly as shown in fig. 6, combining the diagrams of various offsets of the frequency domain position of the ergodic control channel with respect to the frequency domain position of the common signal block under 1, the 20MHz system has 33 possibilities of frequency domain relative position to one common signal block, calculated according to the offset value of 1 RB. Since 52-48 equals the margin of 4 RBs between the control channel and common signal block, plus an offset of 1 RB, the offset value of the frequency domain position of each control channel relative to the frequency domain position of the common signal block can be applied to 5 possibilities at the most. As shown in fig. 6, for the first set of patterns, the offset is 48-20 — 28 RBs for which there are at most 5 possible frequency domain positions of the control channel in the minimum channel bandwidth; for the second set of patterns, the offset is 48-5-20-23 RBs, and the control channel also has at most 5 possible frequency domain locations in the minimum channel bandwidth; for the third set of patterns, the offset is 48-10-20-18 RBs, and the control channel also has at most 5 possible frequency domain locations in the minimum channel bandwidth; for the fourth set of patterns, the offset is 48-15-20-13 RBs, and the control channel also has a maximum of 5 possible frequency domain positions in the minimum channel bandwidth.

Since the SS raster is 20 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 20 RB. That is, the previous four sets of patterns/four offsets (including the possible frequency domain positions of the 4 × 5 ═ 20 control channels in the minimum channel bandwidth) have traversed the possible offset cases at this subcarrier spacing and minimum channel bandwidth combination. Thus, only 4 possible offsets of RBs are needed for a 20MHz system. For example, as previously described, the four possible offsets are (28,23,18, 13).

The offset may also be (22,17,12,7), or (21,16,11,6) in order to ensure that the common signal block is as mid-way through the control channel as possible.

x resource blocks RB;

(X-5) RBs;

(X-10) RBs;

(X-15) RBs;

wherein X is a positive integer, and 15 ═ X < (28).

Any table in tables 1 to 6 can be predefined by the network side and the terminal equipment side, and is used for indicating the frequency domain position offset of the control channel when the common signal block is transmitted repeatedly. The terminal device may determine the offset according to an indication of the network side device about an index of the offset.

S203, the terminal equipment receives control information on the control channel according to the offset.

The terminal equipment can determine the frequency domain position of the control channel according to the offset of the determined frequency domain position of the control channel relative to the frequency domain position of the common signal block, and can accurately receive the control information on the control channel.

According to a communication method provided by the embodiment of the application, in the configuration process of the control channel, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the offset is related to at least one of the bandwidth of the control channel, the subcarrier spacing of the common signal block, the subcarrier spacing of the control channel, and the minimum channel bandwidth of the terminal device, the terminal device can determine the possible offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the parameters, and receive the control information on the control channel according to the possible offsets, so that the control information can be timely and accurately received, and the access performance of the terminal device is ensured.

Fig. 8 is a flowchart illustrating another communication method according to an embodiment of the present application, including the following steps:

s301, the network side equipment sends a public signal block.

Accordingly, the terminal device receives the common signal block.

The network side equipment broadcasts the public signal block, and the terminal equipment realizes the synchronization with the cell by receiving the public signal block. In this embodiment, the network side device does not repeatedly transmit the common signal block. The subcarrier interval of the common signal block is 30kHz, the subcarrier interval of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 40 MHz.

S302, the terminal equipment determines that the frequency domain position of a control channel has an offset of X RBs or (X-11) RBs relative to the frequency domain position of the common signal block; wherein, X is a positive integer, 11 ═ X < 76.

The minimum channel bandwidth (system bandwidth) of the terminal device is 40MHz, including 106 RBs. The subcarrier spacing of the common signal block is 30kHz, and the frequency domain granularity (i.e., SS ratter) of the search common signal block is 7.2MHz, including 20 RBs. The control channel has a subcarrier spacing of 30kHz and includes 96 RBs.

There are 87 possibilities for a 40MHz system, calculated from the offset value of 1 RB, with respect to the frequency domain of one common signal block, 106-20+ 1.

Since the SS raster is 20 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 20 RB. That is, the previous 2 offsets (2 × 11 ═ 22 possible frequency domain locations of control channels in the minimum channel bandwidth) have traversed the possible offset case for this subcarrier spacing and minimum channel bandwidth combination. Thus, only 2 possible offsets of RBs are needed for a 40MHz system. For example, the two possible offsets may be (43,32) or (44,33), the difference between the two offsets being 11 RBs.

wherein X is a positive integer, and 11 ═ X < ═ 76.

Any table in tables 7 to 10 can be predefined by the network side and the terminal equipment side, and is used for indicating the frequency domain position offset of the control channel when the common signal block is transmitted repeatedly. The terminal device may determine the offset according to an indication of the network side device about an index of the offset.

And S303, the terminal equipment receives control information on the control channel according to the offset.

The terminal equipment can determine the frequency domain position of the control channel according to the offset of the determined frequency domain position of the control channel relative to the frequency domain position of the common signal block, and accurately receives the control information on the control channel.

Fig. 9 is a flowchart of another communication method according to an embodiment of the present application, including the following steps:

s401, the network side equipment sends a public signal block.

Accordingly, the terminal device receives the common signal block.

The network side equipment broadcasts the public signal block, and the terminal equipment realizes the synchronization with the cell by receiving the public signal block. In this embodiment, the network side device does not repeatedly transmit the common signal block. The subcarrier interval of the common signal block is 30kHz, the subcarrier interval of the control channel is 60kHz, and the minimum channel bandwidth of the terminal device is 40 MHz.

S402, the terminal equipment determines that the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is one of the following: x RB; (X-1) RBs; (X-2) RBs; (X-3) RBs; (X-4) RBs; (X-5) RBs; (X-6) RBs; (X-7) RBs; (X-8) RBs; (X-9) RBs; wherein, X is a positive integer, 9 ═ X < ═ 14.

The minimum channel bandwidth (system bandwidth) of the terminal device is 20MHz, including 24 RBs. The subcarrier spacing of the common signal block is 30kHz, the frequency domain granularity (i.e., SS ratter) of the search common signal block is 7.2MHz, including 10 RBs at 60 kHz. The control channel has a subcarrier spacing of 60kHz and includes 24 RBs.

Since the SS raster is 10 RBs, the offset amount corresponding to the next SS raster can be applied to the case where the relative position exceeds 10 RB.

Therefore, 10 offset values are required to satisfy the offset values for all 40MHz control channels. For example, the 10 offset values may be: (0-9), (1-10), (2-11), (3-12), (4-13), (5-14).

x RB;

(X-1) RBs;

(X-2) RBs;

(X-3) RBs;

(X-4) RBs;

(X-5) RBs;

(X-6) RBs;

(X-7) RBs;

(X-8) RBs;

(X-9) RBs;

wherein X is a positive integer, and 9 ═ X < ═ 14.

Any table in tables 11 to 18 can be predefined by the network side and the terminal equipment side, and is used for indicating the frequency domain position offset of the control channel when the common signal block is transmitted repeatedly. The terminal device may determine the offset according to an indication of the network side device about an index of the offset.

And S403, the terminal equipment receives control information on the control channel according to the offset.

Fig. 10 is a flowchart illustrating another communication method according to an embodiment of the present application, including the following steps:

s501, the network side equipment sends a public signal block.

Accordingly, the terminal device receives the common signal block.

The network side equipment broadcasts the public signal block, and the terminal equipment realizes the synchronization with the cell by receiving the public signal block. In this embodiment, the network side device does not repeatedly transmit the common signal block. The subcarrier interval of the common signal block is 15kHz, the subcarrier interval of the control channel is 15kHz, and the minimum channel bandwidth of the terminal device is 20 MHz.

S502, the terminal device determines that an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block is one of: x RB or (X-11) RB; wherein X is a positive integer, and 11 ═ X < ═ 76.

Since the SS raster is 20 RBs, the offset corresponding to the next SS raster can be applied to the case where the relative position exceeds 20 RB. That is, the previous 2 offsets (2 × 11 ═ 22 possible frequency domain locations of control channels in the minimum channel bandwidth) have traversed the possible offset case for this subcarrier spacing and minimum channel bandwidth combination. Thus, only 2 possible offsets are needed for a 20MHz system. For example, the two possible offsets may be (38,27), or (39,28), or (40,29), or (41,30), or (42,31), or (43,32), or (44,33), or (45,34), the difference between the two offsets being 11 RBs.

Any table in tables 19 to 28 can be predefined by the network side and the terminal equipment side, and is used for indicating the frequency domain position offset of the control channel when the common signal block is transmitted repeatedly. The terminal device may determine the offset according to an indication of the network side device about an index of the offset.

wherein X is a positive integer, and 11 ═ X < ═ 76.

And S503, the terminal equipment receives control information on the control channel according to the offset.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 11, the present embodiment further provides a communication device 100, and the communication device 100 may be applied to the communication methods shown in fig. 3 and fig. 7 to 10. The communication apparatus 100 may be the terminal device shown in fig. 1, or may be a component (e.g., a chip) applied to the terminal device. The communication device 100 includes a transceiver unit 11 and a processing unit 12; the following are exemplary:

a transceiving unit 11, configured to receive at least one common signal block and obtain repetition information of the common signal block;

a processing unit 12, configured to determine, according to the repetition information, an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block;

the transceiver unit 11 is further configured to receive control information on the control channel according to the offset.

In one implementation, the transceiver unit 11 is further configured to receive indication information, where the indication information is used to indicate a minimum channel bandwidth value of the terminal device assumed when the terminal device receives the control channel.

More detailed descriptions about the transceiver 11 and the processing unit 12 may be obtained by referring to the description about the terminal device in the method embodiments shown in fig. 3 and fig. 7 to fig. 10, which is not repeated herein. The transmitting/receiving unit may be an integrated device having a transmitting/receiving function, or may be an independent receiving unit having a receiving function and a transmitting unit having a transmitting function, and may be logically referred to as a "transmitting/receiving unit".

According to the communication device provided by the embodiment of the application, in the configuration process of the control channel, the situation that the common signal block is possibly subjected to repeated transmission is considered, the subcarrier interval of the newly added control channel and the common signal block is considered, the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block is determined according to the repeated information of the common signal block, the control information is received on the control channel according to the offset, the control information can be timely and accurately received, and the access performance of the terminal equipment is ensured.

Based on the same concept of the communication method in the foregoing embodiment, as shown in fig. 12, the present embodiment further provides a communication apparatus 200, and the communication apparatus 200 may be applied to the communication methods shown in fig. 3 and fig. 7 to 10. The communication apparatus 200 may be a network side device as shown in fig. 1, or may be a component (e.g., a chip) applied to the network side device. The communication device 200 includes a transceiver unit 21 and a processing unit 22.

Illustratively, a transceiving unit 21 for transmitting at least one common signal block;

a processing unit 22, configured to determine, according to the repetition information of the common signal block, an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block;

the transceiver unit 21 is further configured to send control information on a control channel according to the offset.

In one implementation, the transceiver unit 21 is further configured to transmit indication information, where the indication information is used to indicate a minimum channel bandwidth value of a terminal device assumed when the terminal device receives the control channel.

For more detailed description of the transceiver 21 and the processing unit 22, reference may be made to the description of the network-side device in the method embodiments shown in fig. 3 and fig. 7 to fig. 10, which is not repeated herein. The transmitting/receiving unit may be an integrated device having a transmitting/receiving function, or may be an independent receiving unit having a receiving function and a transmitting unit having a transmitting function, and may be logically referred to as a "transmitting/receiving unit".

The embodiment of the application also provides a communication device, and the communication device is used for executing the communication method. Some or all of the above communication methods may be implemented by hardware or may be implemented by software.

Alternatively, the communication device may be a chip or an integrated circuit when embodied.

Optionally, when part or all of the communication method of the foregoing embodiment is implemented by software, the communication apparatus includes: a memory for storing a program; a processor for executing the program stored in the memory, when the program is executed, the communication apparatus is enabled to implement the communication method provided by the above-mentioned embodiment.

Alternatively, the memory may be a physically separate unit or may be integrated with the processor.

Alternatively, when part or all of the communication method of the above embodiments is implemented by software, the communication apparatus may include only a processor. The memory for storing the program is located outside the communication device and the processor is connected to the memory by means of a circuit/wire for reading and executing the program stored in the memory.

The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.

The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.

The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile) such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

Fig. 13 shows a simplified schematic diagram of a terminal device. For easy understanding and illustration, in fig. 13, the terminal device is exemplified by a mobile phone. As shown in fig. 13, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 13. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a receiving unit and a transmitting unit (which may also be collectively referred to as a transceiving unit) of a terminal device, and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 13, the terminal device includes a receiving unit 31, a processing unit 32, and a transmitting unit 33. The receiving unit 31 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit 33 may also be referred to as a transmitter, a transmitting circuit, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like.

For example, in one embodiment, the receiving unit 31 is configured to perform the functions of the terminal devices in S101 and S104 in the embodiment shown in fig. 3, and the processing unit 32 is configured to perform the steps of S102 and S103 in the embodiment shown in fig. 3.

For example, in a further embodiment, the receiving unit 31 is configured to perform the functions of the terminal devices in S201 and S203 in the embodiment shown in fig. 7, and the processing unit 32 is configured to perform the steps of S202 in the embodiment shown in fig. 7.

For example, in a further embodiment, the receiving unit 31 is configured to perform the functions of the terminal devices in S301 and S303 in the embodiment shown in fig. 8, and the processing unit 32 is configured to perform the step of S302 in the embodiment shown in fig. 8.

For example, in a further embodiment, the receiving unit 31 is configured to perform the functions of the terminal devices in S401 and S403 in the embodiment shown in fig. 9, and the processing unit 32 is configured to perform the step of S402 in the embodiment shown in fig. 9.

For example, in yet another embodiment, the receiving unit 31 is configured to execute the functions of the terminal devices in S501 and S503 in the embodiment shown in fig. 10, and the processing unit 32 is configured to execute the step of S502 in the embodiment shown in fig. 10.

Fig. 14 shows a simplified schematic diagram of a network-side device. The network side device includes a radio frequency signal transceiving and converting portion and a portion 42, and the radio frequency signal transceiving and converting portion includes a receiving unit 41 portion and a transmitting unit 43 portion (which may also be collectively referred to as a transceiving unit). The radio frequency signal receiving, transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing, control of network side equipment and the like. The receiving unit 41 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit 43 may also be referred to as a transmitter, a transmitting circuit, etc. Part 42 is typically a control center of the network side device, and may be generally referred to as a processing unit, and is used for controlling the network side device to execute the steps executed by the network side device in fig. 3, 7 to 10. Reference is made in particular to the description of the relevant part above.

Section 42 may include one or more boards, each board may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the network side devices. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one embodiment, the sending unit 43 is configured to execute the functions of the network-side devices in S101 and S104 in the embodiment shown in fig. 3.

For example, in another embodiment, the sending unit 43 is configured to execute the functions of the network-side devices in S201 and S203 in the embodiment shown in fig. 7.

For example, in another embodiment, the sending unit 43 is configured to execute the functions of the network-side devices in S301 and S303 in the embodiment shown in fig. 8.

For example, in another embodiment, the sending unit 43 is configured to execute the functions of the network-side devices in S401 and S403 in the embodiment shown in fig. 9.

For example, in another embodiment, the sending unit 43 is configured to execute the functions of the network-side device in S501 and S503 in the embodiment shown in fig. 10.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the unit is only one logical function division, and other division may be implemented in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).

Claims

1. A method of communication, the method comprising:

the method comprises the steps that terminal equipment receives at least one public signal block and obtains repeated information of the public signal block;

the terminal equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information;

and the terminal equipment receives control information on the control channel according to the offset.

2. The method of claim 1, wherein the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 20 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x resource blocks RB;

(X-5) RBs;

(X-10) RBs;

(X-15) RBs;

wherein X is a positive integer, and 15 ═ X < (28).

3. The method of claim 1, wherein the subcarrier spacing of the common signal block is 30kHz, the subcarrier spacing of the control channel is 30kHz, and the minimum channel bandwidth of the terminal device is 40 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

4. The method of claim 1, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 60kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x RB;

(X-1) RBs;

(X-2) RBs;

(X-3) RBs;

(X-4) RBs;

(X-5) RBs;

(X-6) RBs;

(X-7) RBs;

(X-8) RBs;

(X-9) RBs;

wherein X is a positive integer, and 9 ═ X < ═ 14.

5. The method of claim 1, wherein the subcarrier spacing of the common signal block is 15kHz, the subcarrier spacing of the control channel is 15kHz, and the minimum channel bandwidth of the terminal device is 20 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block; wherein X is a positive integer, and 11 ═ X < ═ 76.

6. The method according to any of claims 1-5, wherein when the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the offset is related to at least one of a bandwidth of a control channel, a subcarrier spacing of a common signal block, a subcarrier spacing of a control channel, and a minimum channel bandwidth of a terminal device.

7. The method of claim 1,

the offset is related to at least one of repetition information of the common signal block, a bandwidth of a control channel, a subcarrier spacing of the common signal block, and a subcarrier spacing of the control channel if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted.

8. The method according to claim 1 or 7, wherein the repetition information of the common signal block comprises a number of repetitions of the common signal block.

9. The method according to any one of claims 1 to 8, further comprising:

and the terminal device receives indication information, wherein the indication information is used for indicating the assumed minimum channel bandwidth value of the terminal device when the terminal device receives the control channel.

10. A method of communication, the method comprising:

the network side equipment transmits at least one public signal block;

the network side equipment determines the offset of the frequency domain position of the control channel relative to the frequency domain position of the common signal block according to the repeated information of the common signal block;

and the network side equipment sends control information on a control channel according to the offset.

11. The method of claim 10, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 30kHz, and the terminal device has a minimum channel bandwidth of 20 MHz; and is

The frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x resource blocks RB;

(X-5) RBs;

(X-10) RBs;

(X-15) RBs;

wherein X is a positive integer, and 15 ═ X < (28).

12. The method of claim 10, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 30kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

13. The method of claim 10, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 60kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and is

x RB;

(X-1) RBs;

(X-2) RBs;

(X-3) RBs;

(X-4) RBs;

(X-5) RBs;

(X-6) RBs;

(X-7) RBs;

(X-8) RBs;

(X-9) RBs;

wherein X is a positive integer, and 9 ═ X < ═ 14.

14. The method of claim 10, wherein the common signal block has a subcarrier spacing of 15kHz, the control channel has a subcarrier spacing of 15kHz, and the terminal device has a minimum channel bandwidth of 20 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

15. The method according to any of claims 10-14, wherein if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted, the offset is related to at least one of a bandwidth of the control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, and a minimum channel bandwidth of the terminal device.

16. The method of claim 10, wherein if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted, the offset is related to at least one of the repetition information of the common signal block, a bandwidth of the control channel, a subcarrier spacing of the common signal block, and a subcarrier spacing of the control channel.

17. The method according to claim 10 or 16, wherein the repetition information of the common signal block comprises a number of repetitions of the common signal block.

18. The method according to any one of claims 10 to 17, further comprising:

and the network side equipment sends indication information, wherein the indication information is used for indicating the terminal equipment to receive the assumed minimum channel bandwidth value of the terminal equipment when the terminal equipment receives the control channel.

19. A communications apparatus, the apparatus comprising:

the receiving and transmitting unit is used for receiving at least one public signal block and acquiring repeated information of the public signal block;

a processing unit, configured to determine, according to the repetition information, an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block;

the transceiver unit is further configured to receive control information on the control channel according to the offset.

20. The apparatus of claim 19, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 30kHz, and the terminal device has a minimum channel bandwidth of 20 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x resource blocks RB;

(X-5) RBs;

(X-10) RBs;

(X-15) RBs;

wherein X is a positive integer, and 15 ═ X < (28).

21. The apparatus of claim 19, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 30kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

22. The apparatus of claim 19, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 60kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and the frequency domain position of the control channel is offset from the frequency domain position of the common signal block by one of:

x RB;

(X-1) RBs;

(X-2) RBs;

(X-3) RBs;

(X-4) RBs;

(X-5) RBs;

(X-6) RBs;

(X-7) RBs;

(X-8) RBs;

(X-9) RBs;

wherein X is a positive integer, and 9 ═ X < ═ 14.

23. The apparatus of claim 19, wherein the common signal block has a subcarrier spacing of 15kHz, the control channel has a subcarrier spacing of 15kHz, and the terminal device has a minimum channel bandwidth of 20 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

24. The apparatus according to any of claims 19-23, wherein the offset is related to at least one of a bandwidth of the control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, a minimum channel bandwidth of the terminal device, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted.

25. The apparatus of claim 19, wherein if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted, the offset is related to at least one of the repetition information of the common signal block, a bandwidth of the control channel, a subcarrier spacing of the common signal block, and a subcarrier spacing of the control channel.

26. The apparatus of claim 19 or 25, wherein the repetition information of the common signal block comprises a number of repetitions of the common signal block.

27. The apparatus according to any one of claims 19 to 26, wherein the transceiver unit is further configured to receive indication information, where the indication information is used to indicate a minimum channel bandwidth value of the terminal device assumed when the terminal device receives the control channel.

28. A communications apparatus, the apparatus comprising:

a transceiving unit for transmitting at least one common signal block;

a processing unit, configured to determine, according to repetition information of the common signal block, an offset of a frequency domain position of a control channel with respect to a frequency domain position of the common signal block;

the transceiver unit is further configured to send control information on a control channel according to the offset.

29. The apparatus of claim 28, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 30kHz, and the terminal device has a minimum channel bandwidth of 20 MHz; and is

x resource blocks RB;

(X-5) RBs;

(X-10) RBs;

(X-15) RBs;

wherein X is a positive integer, and 15 ═ X < (28).

30. The apparatus of claim 28, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 30kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and is

The frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

31. The apparatus of claim 28, wherein the common signal block has a subcarrier spacing of 30kHz, the control channel has a subcarrier spacing of 60kHz, and the terminal device has a minimum channel bandwidth of 40 MHz; and is

x RB;

(X-1) RBs;

(X-2) RBs;

(X-3) RBs;

(X-4) RBs;

(X-5) RBs;

(X-6) RBs;

(X-7) RBs;

(X-8) RBs;

(X-9) RBs;

wherein X is a positive integer, and 9 ═ X < ═ 14.

32. The apparatus of claim 28, wherein the common signal block has a subcarrier spacing of 15kHz, the control channel has a subcarrier spacing of 15kHz, and the terminal device has a minimum channel bandwidth of 20 MHz; and the frequency domain position of the control channel is offset by X RBs or (X-11) RBs with respect to the frequency domain position of the common signal block, where X is a positive integer and 11 ═ X < 76.

33. The apparatus according to any of claims 28-32, wherein the offset is related to at least one of a bandwidth of the control channel, a subcarrier spacing of the common signal block, a subcarrier spacing of the control channel, a minimum channel bandwidth of the terminal device, if the repetition information of the common signal block indicates that the common signal block is not repeatedly transmitted.

34. The apparatus of claim 28, wherein the offset is related to at least one of repetition information of the common signal block, a bandwidth of the control channel, a subcarrier spacing of the common signal block, and a subcarrier spacing of the control channel if the repetition information of the common signal block indicates that the common signal block is repeatedly transmitted.

35. The apparatus of claim 28 or 34, wherein the repetition information of the common signal block comprises a number of repetitions of the common signal block.

36. The apparatus according to any one of claims 28 to 35, wherein the transceiver unit is further configured to transmit indication information, where the indication information is used to indicate a minimum channel bandwidth value of a terminal device assumed when the terminal device receives the control channel.

37. A communications device comprising a processor and transceiver means, the processor being coupled to the transceiver means and the processor being configured to execute a computer program or instructions to control the transceiver means to receive and transmit information; the computer program or instructions, when executed by the processor, further cause the processor to implement the method of any of claims 1-8.

38. A communications device comprising a processor and transceiver means, the processor being coupled to the transceiver means and the processor being configured to execute a computer program or instructions to control the transceiver means to receive and transmit information; the computer program or instructions, when executed by the processor, further cause the processor to implement the method of any of claims 9-16.

39. A computer readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 8.

40. A computer readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any one of claims 9 to 16.

41. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 8.

42. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 9 to 16.