WO2017166164A1 - Downlink physical channel sending method, ue, and base station - Google Patents

Abstract

Embodiments of the present invention relate to a downlink physical channel sending method, a UE, and a base station. The downlink physical channel sending method comprises: a base station adjusts, when a predetermined trigger condition is satisfied, a system bandwidth of a cell managed by the base station; the base station sends a downlink physical channel of the cell within the adjusted system bandwidth of the cell. Hence, in the embodiments of the present invention, for the cell managed by the base station, the base station dynamically adjusts the system bandwidth of the cell and sends the downlink physical channel of the cell within the adjusted system bandwidth of the cell rather than sending the downlink physical channel of the cell using a fixed system bandwidth, thereby effectively reducing inter-cell interference.

Description

Transmission method of downlink physical channel, UE and base station Technical field

The present invention relates to the field of wireless communications, and in particular, to a method for transmitting a downlink physical channel, a UE, and a base station.

Background technique

Fifth-generation mobile communication technology (5 ^th Generation, 5G) is characterized by the early development of multiple radio access technologies (radio access technology, RAT) common network, the hybrid network may also be called a common network. For example, in order to achieve rapid deployment of 5G, the first phase of 5G development may be based on Long Term Evolution (LTE) technology as the primary RAT, and 5G technology as the secondary RAT. The control plane data is only transmitted through the LTE technology, and the 5G technology is only used to transmit user plane data, and the 5G technology can be jointly scheduled with the LTE technology. Compared with LTE technology, 5G technology has a higher working frequency band, and has different waveforms, multiple access methods and delay requirements than LTE technology, and the signal quality is different during transmission.

In the multi-RAT common networking mode of the future 5G technology, the coverage of the LTE technology may have multiple cells covered by the 5G technology, which is simply referred to as a 5G cell. 5G technology can be used to improve the reliability of data transmission.

In addition to the scenario of common networking, the 5G RAT can also be independently networked. In the common networking, the same system bandwidth is transmitted through the 5G RAT for different 5G cell base stations. In the independent networking, the same system bandwidth may be transmitted through the 5G RAT for different 5G cell base stations. If the same resources are used for different 5G cell base stations, communication between the cells may cause interference.

Summary of the invention

The embodiments of the present invention provide a method for transmitting a downlink physical channel, a UE, and a base station, which can reduce inter-cell interference.

In one aspect, a method for transmitting a downlink physical channel is provided, where the method includes:

The base station adjusts a system bandwidth of a cell managed by the base station when a preset trigger condition is met;

The base station sends a downlink physical channel of the cell within the adjusted system bandwidth of the cell.

It can be seen that, in the embodiment of the present invention, the base station does not use a fixed system bandwidth to transmit the downlink physical channel of the cell, but dynamically adjusts the system bandwidth of the cell, and is within the adjusted system bandwidth of the cell. The downlink physical channel of the cell is transmitted, so that inter-cell interference can be effectively reduced.

In a possible design, the base station adjusts the system bandwidth of the cell managed by the base station, and the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station.

It can be seen that, in the embodiment of the present invention, the base station adjusts the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell, so that the system bandwidth can meet the service volume and/or service priority of the cell. Therefore, the cell service can be smoothly carried out under the premise of reducing inter-cell interference.

In a possible design, the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station, including:

The base station adjusts, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the time domain; and/or,

The base station adjusts, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the frequency domain; and/or,

The base station adjusts the system bandwidth of the cell in the airspace according to the traffic volume and/or service priority of the cell managed by the base station.

It can be seen that, in the embodiment of the present invention, the method for the base station to adjust the system bandwidth of the cell is various, and the system bandwidth of the cell in at least one of the time domain, the frequency domain, and the air domain can be adjusted, so that the appropriate adjusted cell can be selected according to the needs. The way the system is bandwidth.

In a possible design, the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station, including:

The base station adjusts the system bandwidth of the cell according to the system-wide bandwidth of the cell managed by the base station, the load of the whole system bandwidth, the traffic volume of the cell, and/or the service priority.

Among them, the above-mentioned system-wide bandwidth load is the use of the entire system bandwidth.

It can be seen that, in the embodiment of the present invention, the base station can adjust the unused system bandwidth in the whole system bandwidth to the system bandwidth of the cell according to the usage of the whole system bandwidth, thereby further effectively avoiding inter-cell interference.

In a possible design, after the base station adjusts the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell managed by the base station, the method further includes:

The base station sends a broadcast message of the cell, where the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell.

It can be seen that, in the embodiment of the present invention, the base station can indicate the system bandwidth of the cell of the user equipment (User Equipment, UE) by sending the broadcast message, so that the UE can implement fast receiving of the downlink physical channel according to the system bandwidth of the cell.

In a possible design, the base station sends the downlink physical channel of the cell in the system bandwidth of the adjusted cell, including:

Transmitting, by the base station, at least one of a synchronization channel (SCH), a broadcast channel (Physical Broadcast Channel, PBCH), and a downlink control channel of the cell, and transmitting, in the adjusted system bandwidth of the cell Cell-specific reference signals (CRS).

In a possible design, the base station sends at least one of the SCH and the PBCH of the cell in the system bandwidth of the adjusted cell, including:

Transmitting, by the base station, the SCH of the cell in a first preset transmission position within a system bandwidth of the adjusted cell; and/or,

The base station sends the PBCH of the cell in a second preset transmission position within the adjusted system bandwidth of the cell.

It can be seen that, in the embodiment of the present invention, the base station sends the SCH or the PBCH of the cell in the system bandwidth of the adjusted cell, which may be in a preset transmission position of the system bandwidth.

In a possible design, the base station sends at least one of the SCH and the PBCH of the cell in the system bandwidth of the adjusted cell, including:

Determining, by the base station, a first transmission location within a system bandwidth of the adjusted cell, transmitting an SCH of the cell at the first transmission location; and/or,

The base station determines a second transmission location within the adjusted system bandwidth of the cell, and transmits a PBCH of the cell at the second transmission location.

It can be seen that, in the embodiment of the present invention, the base station sends the SCH or PBCH of the cell within the adjusted system bandwidth of the cell, and can dynamically determine the transmission location of the system bandwidth.

In a possible design, after the base station determines the first transmission location within the system bandwidth of the adjusted cell, the method further includes:

The base station sends a broadcast message of the cell, where the broadcast message carries second indication information, where the second indication information is used to indicate the first transmission location; and/or,

After the base station determines the second transmission location within the system bandwidth of the adjusted cell, the method further includes:

The base station sends a broadcast message of the cell, where the broadcast message carries a third indication information, where the third indication information is used to indicate the second transmission location.

It can be seen that, in the embodiment of the present invention, the base station sends the SCH or PBCH of the cell in the system bandwidth of the adjusted cell, and can dynamically determine the transmission location of the system bandwidth, and indicate the corresponding downlink physical of the UE by using a broadcast message. The transmission location of the channel.

In another aspect, a method for receiving a downlink physical channel is provided, the method comprising:

Obtaining, by the UE, a system bandwidth of a cell to which the UE belongs;

The UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell.

In a possible design, the acquiring, by the UE, the system bandwidth of the cell to which the UE belongs includes:

Obtaining, by the UE, a system bandwidth of a cell to which the UE belongs in the time domain; and/or,

Obtaining, by the UE, a system bandwidth of a cell to which the UE belongs in the frequency domain; and/or,

The UE acquires the system bandwidth of the cell to which the UE belongs in the airspace.

In a possible design, the acquiring, by the UE, the system bandwidth of the cell to which the UE belongs includes:

Receiving, by the UE, a broadcast message sent in a cell to which the UE belongs;

Obtaining first indication information carried in the broadcast message, where the first indication information indicates a system bandwidth of the cell.

In a possible design, the UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell, including:

The UE receives at least one of a SCH, a PBCH, and a downlink control channel of the cell, and receives a CRS, within the acquired system bandwidth of the cell.

In a possible design, the UE receives at least one of the SCH and the PBCH of the cell in the acquired system bandwidth of the cell, including:

Receiving, by the UE, the SCH at a first preset transmission location within a system bandwidth of the acquired cell; and/or,

The UE receives the PBCH at a second preset transmission location within the acquired system bandwidth of the cell.

In a possible design, the UE receives at least one of the SCH and the PBCH of the cell in the acquired system bandwidth of the cell, including:

Receiving, by the UE, a broadcast message sent in the cell;

Obtaining second indication information carried in the broadcast message, where the second indication information indicates The transmission of the line SCH is at a first transmission location within the acquired system bandwidth of the cell; and/or,

Acquiring the third indication information carried in the broadcast message, where the third indication information indicates that the PBCH transmission is performed in the acquired second transmission location within the system bandwidth of the cell;

Receiving an SCH at a first transmission location of the system bandwidth; and/or,

A PBCH is received at a second transmission location of the system bandwidth.

In another aspect, the embodiment of the present invention provides a base station, where the base station can implement the functions performed by the base station in the foregoing method, and the functions can be implemented by using hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the base station includes a processor and a transceiver configured to support the base station to perform the corresponding functions of the above methods. The transceiver is configured to support communication between the base station and the UE. The base station can also include a memory for coupling with the processor that holds the necessary program instructions and data for the base station.

In another aspect, the embodiment of the present invention provides a UE, where the UE can implement the functions performed by the UE in the foregoing method, where the function can be implemented by using hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the UE includes a processor and a transceiver configured to support the UE to perform corresponding functions in the above methods. The transceiver is for supporting communication between the UE and the base station. The UE may also include a memory for coupling with the processor that stores the necessary program instructions and data for the UE.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station, including a program designed to perform the above aspects.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the UE, including a program designed to perform the above aspects.

Compared with the prior art, in the solution provided by the present invention, the base station dynamically adjusts the system bandwidth of each cell, and adopts a fixed system-wide bandwidth manner for multiple cells, so as to avoid interference when performing downlink channel transmission between cells. .

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario of a multi-RAT joint networking of a 5G technology and not sharing stations according to an embodiment of the present disclosure;

2 is a flowchart of a method for transmitting a downlink physical channel according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of system bandwidth allocation according to an embodiment of the present invention;

4 is a schematic diagram of another system bandwidth allocation according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another system bandwidth allocation according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of another system bandwidth allocation according to an embodiment of the present invention;

FIG. 7 is a flowchart of a method for receiving a downlink physical channel according to an embodiment of the present invention;

FIG. 8 is a structural diagram of a base station according to an embodiment of the present invention;

FIG. 9 is a structural diagram of a UE according to an embodiment of the present invention;

FIG. 10 is a structural diagram of another base station according to an embodiment of the present invention;

FIG. 11 is a structural diagram of another UE according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

The method for transmitting and receiving the downlink physical channel provided by the embodiment of the present invention may be applicable to the sending and receiving of the downlink physical channel of any one of the cells of the multiple neighboring first RATs. The applicable scenario may be, but not limited to, the following. Scenario 1: scenario 1 is a scenario in which the first RAT is independent of the network, that is, the base station supports only the first RAT, and the base station covers multiple cells by using the first RAT, where the type of the first RAT is not limited, for example, 5G RAT, 4.5G RAT, or 4G RAT; scenario 2, the scenario in which the first RAT and the second RAT are combined and co-located, that is, the base station supports both the first RAT and the second RAT, and the base station passes the A RAT covers a plurality of cells, and these cells are referred to as a first RAT cell, and the base station simultaneously covers a plurality of first RAT cells by using a second RAT; scenario 3, first RAT and first A scenario in which the two RATs are mixed and not shared, that is, a plurality of base stations are provided, and the plurality of base stations include one macro base station and multiple small base stations, wherein the small base station supports only the first RAT, and the macro base station only supports a second RAT, each small base station covers a first RAT cell by using a first RAT, and the macro base station simultaneously covers multiple first RAT cells by using a second RAT, where the types of the first RAT and the second RAT are not limited, for example, The first RAT may be a 5G RAT, and the second RAT may be a 4G RAT, or the first RAT may be a 4G RAT, and the second RAT may be a 5G RAT.

A specific application scenario of the embodiment of the present invention is described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an application scenario of a multi-RAT common networking of a 5G technology and not sharing a station according to an embodiment of the present invention. A macro base station has multiple small base stations, a macro base station, and a user equipment (User Equipment, The communication of the UE uses LTE technology for transmitting control plane data, and the communication between the small base station and the UE uses 5G technology for transmitting user plane data, and the 5G technology can improve the reliability of data transmission.

The networking mode shown in FIG. 1 is only an example of the multi-RAT common networking mode in the embodiment of the present invention, and is not used to limit the embodiment of the present invention. In practical applications, the LTE technology shown in FIG. 1 may be used. The common networking mode in which the 5G technology does not share the station can also adopt the common networking mode in which the LTE technology and the 5G technology are co-located.

The embodiment of the present invention can be applied to the scenario of the hybrid network of the 5G RAT and the LTE RAT shown in FIG. 1 , and can also be applied to the scenario of the 5G RAT independent networking, and can also be applied to the 4G (LTE) system and the 4.5G system. In the embodiment of the present invention, a scenario in which a 5G RAT and an LTE RAT hybrid network is used is taken as an example for description.

Generally, in the scenario of a hybrid network of a 5G RAT and an LTE RAT, one LTE cell includes multiple 5G cells, and each 5G cell uses the same system bandwidth, which may cause interference of signals transmitted between 5G cells.

2 is a flowchart of a method for transmitting a downlink physical channel according to an embodiment of the present invention, where the method is performed by a base station, where the base station may be a small base station in a common network and not in a co-site scenario, and correspondingly, by the UE Performing reception of a downlink physical channel, where the method includes:

Step 201: When the preset trigger condition is met, the base station adjusts a system of the cell managed by the base station. bandwidth.

The trigger condition may be a timing trigger condition. For example, the first adjustment of the cell system bandwidth is performed at 0:0:00 every day, and then the cell system bandwidth is adjusted every 5 minutes.

In an example, in a scenario where the 5G RAT and the LTE RAT are mixed, the cell is specifically a 5G cell, and the 5G cell refers to a cell that uses 5G RAT communication between the base station and the UE, and the base station specifically adjusts the 5G cell in step 201. System bandwidth.

In the embodiment of the present invention, the system adjusts the system bandwidth of the cell managed by the base station, that is, the system bandwidth of each 5G cell is not fixed. System bandwidth, but the system bandwidth of each 5G cell can be adjusted by the base station.

Step 202: The base station sends the downlink physical channel of the cell in the adjusted system bandwidth of the cell.

In the embodiment of the present invention, the manner in which the base station adjusts the system bandwidth of the cell managed by the base station in step 201 may be, but is not limited to, the following three types: the base station adjusts the system bandwidth of the cell according to the traffic volume of the cell managed by the base station, for example, When the traffic of the cell is large, a large system bandwidth is allocated to the cell, and when the traffic of the cell is small, a small system bandwidth is allocated to the cell; or the base station according to the service priority of the cell managed by the base station Adjusting the system bandwidth of the cell, for example, when the service transmitted in the cell has a service with a higher service priority, the system allocates a larger system bandwidth, and when the service priority of the service transmitted in the cell is low, The system allocates a smaller system bandwidth to the cell; or the base station adjusts the system bandwidth of the cell according to the traffic volume of the cell managed by the base station and the service priority of the cell, for example, preset traffic, service priority, and Corresponding relationship between system bandwidths, finding the corresponding system bandwidth according to the traffic volume and service priority of the cell, and determining the system bandwidth as Cell system bandwidth, the correspondence may be as shown in Table.

Business volume	Business priority	System bandwidth
[0,100)	high	10M

[0,100)	low	5M
[100,200)	high	15M
[100,200)	low	10M
[200, ∞)	high	20M
[200, ∞)	low	15M

Table I

The base station adjusts the system bandwidth of the cell, including: the base station adjusts the system bandwidth of the cell in the time domain; and/or, the base station adjusts the system bandwidth of the cell in the frequency domain; and/or, the base station adjusts the system bandwidth of the cell in the airspace.

In the embodiment of the present invention, in order to avoid inter-cell interference, the base station may adjust at least one of the system bandwidth of the cell in the frequency domain, the time domain, and the air domain, and isolate at least one of the frequency domain, the time domain, and the air domain. The communication between the cells avoids the use of the same system bandwidth between the cells, thereby generating interference, wherein adjusting the system bandwidth in the time domain refers to adjusting the time used by the base station to transmit signals to the UE through the system bandwidth, and passing different times. Separating the transmission between the base station and the UE of each 5G cell, thereby avoiding interference between the 5G cells; adjusting the system bandwidth in the frequency domain refers to adjusting the frequency band used by the base station to transmit signals to the UE through the system bandwidth, and adopting different frequency bands. The frequency band isolates the transmission between the base station and the UE of each 5G cell, thereby avoiding interference between the 5G cells; adjusting the system bandwidth in the airspace refers to adjusting the beam used by the base station to transmit signals to the UE through the system bandwidth, and adopting different beams. The beam isolates the transmission between the base station and the UE of each 5G cell, thereby avoiding interference between the 5G cells, and the different beams can be reflected Different beam coverage.

In the embodiment of the present invention, the system bandwidth of the cell may be adjusted according to the system-wide bandwidth of the cell, the load of the whole system bandwidth, the traffic volume of the cell, and/or the service priority. The system-wide bandwidth may be a preset system bandwidth of each of the 5G cells, and the load of the system-wide bandwidth may be a state occupied by resources in the entire system bandwidth. In this embodiment of the present invention, each of the components may be periodically adjusted. System bandwidth of 5G cells.

Optionally, after adjusting the system bandwidth of the cell, the base station further needs to send to the UE in the cell. The broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell. In a scenario where the 5G RAT and the LTE RAT are mixed, the base station may specifically send a broadcast message through the LTE RAT. The base station transmitting the broadcast message in the whole system bandwidth through the LTE RAT facilitates the UE to quickly receive the broadcast message.

In one example, the base station can determine the size and location of the system bandwidth allocated for the cell based on the size of the full system bandwidth, the load of the full system bandwidth, and the traffic of the cell.

In order to reduce inter-cell interference, the base station may adjust the system bandwidth allocated to the cell according to the traffic volume of the cell. For example, the system bandwidth may be periodically adjusted, or the system bandwidth may be adjusted according to the traffic volume. When the cell traffic is transmitted more, the system bandwidth is increased; otherwise, the system bandwidth can be reduced, as shown in Figure 3-6. The location of the system bandwidth can take into account the load distribution across the entire system bandwidth.

For example, the system bandwidth is adjusted in the frequency domain, and the system bandwidth allocated to the cell may be determined according to the correspondence between the preset number of UEs and the system bandwidth or the relationship between the traffic volume and the system bandwidth. Table 2 shows.

Business volume	System bandwidth
[0,100)	5M
[100,200)	10M
[200, ∞)	15M

Table II

Referring to Table 2, assuming that the system-wide bandwidth is 20M, the number of UEs in the cell is small, or the amount of traffic is small, and the traffic volume belongs to the interval [0, 100), a smaller system bandwidth (5M) can be allocated to the cell, and According to the load condition of the whole system bandwidth, the location of the system bandwidth allocated for the cell is determined. Referring to FIG. 3, for example, the system bandwidth includes system bandwidth 1, system bandwidth 2, and system bandwidth 3, wherein system bandwidth 1 and system bandwidth 2 are allocated. For other 5G cells, the system bandwidth of the appropriate size can be selected in the system bandwidth 3 to be allocated to the cell.

In an example, the base station may send a broadcast message to the UE of the cell through the LTE RAT. The broadcast message is used to indicate the size and location of the system bandwidth allocated by the base station to the cell. The UE in the cell learns the size and location of the system bandwidth allocated to the cell by receiving the broadcast message.

Due to the adjustment of the system bandwidth, the transmission location of the relevant downlink physical channel also needs to be adjusted accordingly.

Specifically, in the embodiment of the present invention, the resource location occupied by the downlink physical channel in the system bandwidth may be preset, and after the UE learns the system bandwidth allocated by the cell, the downlink physical channel transmission may be determined according to the preset resource location. In addition, after the base station has determined the system bandwidth of the cell, the base station may also change the transmission location of the downlink physical channel, notify the UE by using a broadcast message sent by the LTE RAT, or the resource block of the UE may be in the determined system bandwidth (resource) Search in block, RB).

The downlink physical channel involved in the embodiment of the present invention includes:

a synchronization channel (SCH), which can be used to obtain a downlink synchronization or the like; a physical broadcast channel (PBCH), which is used to obtain a system message of a cell, and the like;

The downlink control channel is used for transmitting uplink/downlink control signaling.

And a cell reference signal (pilot), a channel estimation for the downlink physical channel, and the like.

In the embodiment of the present invention, at least one downlink channel transmission and common reference signal (cell-specific reference signals) in the SCH, PBCH, and downlink control channels may be performed in the 5G cell according to the system bandwidth allocated for the 5G cell. , CRS) transmission.

Specifically, the SCH or PBCH transmission may be performed in the cell through the 5G RAT according to the system bandwidth allocated for the cell and the preset transmission location of the system bandwidth.

Since the UE knows the size and location of the system bandwidth, it is not necessary to distribute the SCH and PBCH always at the center frequency band of the system bandwidth as in the LTE technology. The transmission position of the SCH or PBCH may be mapped to a position adjacent to the control channel of each subframe or other fixed position, for example, may be fixed to the 0th to 62th RB of the 3rd symbol of each subframe of the system bandwidth; 5G RAT The transmission location of the SCH or PBCH may also vary, its location may be notified to the UE via an LTE broadcast message; or the UE may blindly check in the RB of the current system bandwidth.

In the embodiment of the present invention, the transmission location of the SCH or PBCH in the system bandwidth may be determined according to the system bandwidth allocated for the cell; and the SCH or PBCH transmission is performed in the current cell by using the 5G RAT in the determined transmission location of the system bandwidth.

When the system bandwidth of the cell is dynamically adjusted in the frequency domain, since the UE demodulates the data and needs downlink control information, the downlink control channel may still be transmitted in the first few symbols of each subframe in time, but In the frequency domain, only the bandwidth of the allocated system is distributed.

The CRS also only needs to be mapped to the resource element (RE) of the currently allocated system bandwidth.

The size and location of the system bandwidth of the cell can be adjusted periodically or aperiodically, as shown in FIG. The corresponding resource locations of the above physical channels also have corresponding dynamic changes.

In the embodiment of the present invention, when the system bandwidth of the cell is dynamically adjusted in the time domain, different time segments of the system bandwidth may be allocated to different 5G cells, as shown in FIG. 5 . In the frequency domain, each channel can still be transmitted in the full frequency band; in the time domain, each downlink physical channel only needs to be transmitted in the time period allocated to the current cell. For example, as shown in FIG. 5, the system bandwidth is used for transmission of 5G cell 1 in time period 1. Therefore, the downlink physical channel of the 5G RAT of cell 1 and the reference pilot need only be transmitted in the interval of time period 1 when When the subsequent time period of the system bandwidth is allocated to other cells, the downlink physical channel of the cell 1 and the reference pilot stop transmitting.

When the system bandwidth of the current cell is adjusted in the airspace, since the 5G RAT can adopt a multi-beam transmission mode, the system bandwidth can be allocated to different cells according to different beams, and the transmission of each cell is isolated by the beam. So as to avoid interference between beams between cells. When the base station allocates a beam to the cell, the base station may allocate a beam to the cell according to the traffic volume of the cell, or may allocate a beam to the cell by using a random allocation manner, which is not specifically limited in this embodiment of the present invention. As shown in FIG. 6, cell 1 may use system bandwidth using beams 1-4, cell 2 uses system bandwidth using beams 5-7, and cell 3 may use system bandwidth using beams 8-10. The corresponding downlink physical channel and reference signal of cell 1 need only be transmitted through beams 1-4, and so on.

Correspondingly, when the system bandwidth of the cell is adjusted, the UE determines the system bandwidth of the cell in order to perform downlink physical channel and reception of the reference channel.

FIG. 7 is a flowchart of a method for receiving a downlink physical channel according to an embodiment of the present invention, where a downlink physical channel is transmitted by a small base station in a base station, and a UE performs downlink physical channel reception, where the method includes:

Step 701: The UE acquires a system bandwidth of a cell to which the UE belongs.

The UE may obtain the system bandwidth of the cell to which the UE belongs in the time domain; and/or acquire the system bandwidth of the cell to which the UE belongs in the frequency domain; and/or obtain the cell to which the UE belongs in the airspace. System bandwidth. In an example, the UE may receive the broadcast message sent in the cell to which the UE belongs, and obtain the first indication information carried in the broadcast message, where the first indication information indicates the system bandwidth of the cell. Specifically, the first indication information indicates the size and location of the system bandwidth of the cell, for example, the frequency domain upper limit and the lower frequency domain limit of the system bandwidth, and preset values for the time domain system bandwidth and the airspace system bandwidth that are not indicated.

Step 702: The UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell.

In an example, the UE receives at least one of the SCH, the PBCH, and the downlink control channel of the cell, and receives the CRS, within the acquired system bandwidth of the cell.

In an example, the UE receives the SCH at the first preset transmission location within the acquired system bandwidth of the cell; and/or the UE receives the PBCH at the second preset transmission location within the acquired system bandwidth of the cell. .

In an example, the UE receives the broadcast message sent in the cell, and obtains the second indication information carried in the broadcast message, where the second indication information indicates that the transmission of the SCH is performed in the first transmission location within the acquired system bandwidth of the cell. And/or, obtaining third indication information carried in the broadcast message, the third indication information indicating that the PBCH transmission is performed in the acquired second transmission location within the system bandwidth of the cell; receiving at the first transmission location of the system bandwidth SCH; and/or, receiving the PBCH at a second transmission location of the system bandwidth.

The method for receiving the downlink physical channel on the UE side corresponds to the method for transmitting the downlink physical channel on the base station side. For details, refer to the detailed description of the embodiment of the base station, and no further details are provided herein.

Compared with the prior art, in the solution provided by the present invention, the 5G RAT does not use a fixed full bandwidth (including time, frequency domain, beam) communication, but uses a time domain and a frequency domain for each cell covered by the 5G RAT. Or adjusting the system bandwidth on at least one of the airspaces to avoid interference when performing downlink channel transmission between cells.

FIG. 8 is a structural diagram of a base station, where the base station is configured to perform a method for transmitting a downlink physical channel according to an embodiment of the present disclosure, where the base station includes:

The adjusting unit 801 is configured to adjust a system bandwidth of a cell managed by the base station when a preset trigger condition is met;

The sending unit 802 is configured to send a downlink physical channel of the cell within a system bandwidth of the cell that is adjusted by the adjusting unit 801.

Optionally, the adjusting unit 801 is specifically configured to adjust a system bandwidth of the cell according to a traffic volume and/or a service priority of a cell managed by the base station.

Optionally, the adjusting unit 801 is specifically configured to:

Adjusting, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the time domain; and/or,

Adjusting, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the frequency domain; and/or,

Adjusting the system bandwidth of the cell in the airspace according to the traffic volume and/or service priority of the cell managed by the base station.

Optionally, the adjusting unit 801 is specifically configured to adjust the cell according to a system-wide bandwidth of the cell managed by the base station, a load of the system-wide bandwidth, a traffic volume of the cell, and/or a service priority. System bandwidth.

Optionally, the sending unit 802 is further configured to:

After the adjusting unit 801 adjusts the system bandwidth of the cell, sending the wide area of the cell The broadcast message carries the first indication information, where the first indication information is used to indicate the system bandwidth of the adjusted cell by the adjustment unit.

Optionally, the sending unit 802 is configured to: send, in the system bandwidth of the cell that is adjusted by the adjusting unit 801, at least one of a SCH, a PBCH, and a downlink control channel of the cell, and send CRS.

Optionally, the sending unit 802 is specifically configured to:

Transmitting, by the adjusting unit 801, the first preset transmission location in the system bandwidth of the cell, and transmitting the SCH of the cell; and/or,

And transmitting, by the adjusting unit 801, the second preset transmission location in the system bandwidth of the cell, and transmitting the PBCH of the cell.

Optionally, the adjusting unit 801 is further configured to determine a first transmission location within the adjusted system bandwidth of the cell;

The sending unit 802 is specifically configured to send the SCH of the cell at a first transmission location determined by the adjusting unit 801; and/or,

The adjusting unit 801 is further configured to determine a second transmission location within the adjusted system bandwidth of the cell;

The sending unit 802 is specifically configured to send the PBCH of the cell at the second transmission location determined by the adjusting unit 801.

Optionally, the sending unit 802 is further configured to:

After the adjusting unit 801 determines the first transmission location in the system bandwidth of the adjusted cell, the broadcast message of the cell is sent, where the broadcast message carries the second indication information, and the second indication information Used to indicate the first transmission location; and/or,

After the adjusting unit 801 determines the second transmission location in the system bandwidth of the adjusted cell, the broadcast message of the cell is sent, where the broadcast message carries the third indication information, and the third indication information Used to indicate the second transmission location.

FIG. 9 is a structural diagram of a UE according to an embodiment of the present invention, where the UE is used to perform the implementation of the present invention. The method for receiving a downlink physical channel provided by the example, where the UE includes:

The obtaining unit 901 is configured to acquire a system bandwidth of a cell to which the UE belongs;

The receiving unit 902 is configured to receive a downlink physical channel of the cell within a system bandwidth of the cell acquired by the acquiring unit 901.

Optionally, the obtaining unit 901 is specifically configured to:

Obtaining a system bandwidth of a cell to which the UE belongs in the time domain; and/or,

Obtaining a system bandwidth of a cell to which the UE belongs in the frequency domain; and/or,

Obtaining a system bandwidth of the cell to which the UE belongs in the airspace.

Optionally, the receiving unit 902 is further configured to receive a broadcast message sent in a cell to which the UE belongs;

The acquiring unit 901 is specifically configured to acquire first indication information carried in the broadcast message received by the receiving unit 902, where the first indication information indicates a system bandwidth of the cell.

Optionally, the receiving unit 902 is configured to receive at least one of a SCH, a PBCH, and a downlink control channel of the cell, and receive a CRS, within a system bandwidth of the cell acquired by the acquiring unit 901. .

Optionally, the receiving unit 902 is specifically configured to:

Receiving an SCH at a first preset transmission location within a system bandwidth of the cell acquired by the acquiring unit 901; and/or,

Receiving a PBCH in a second preset transmission location within a system bandwidth of the cell acquired by the acquiring unit 901.

Optionally, the receiving unit 902 is further configured to receive a broadcast message sent in the cell;

The acquiring unit 901 is specifically configured to acquire second indication information carried in the broadcast message received by the receiving unit 902, where the second indication information indicates that the transmission of the SCH is within the acquired system bandwidth of the cell. a first transmission location; and/or acquiring third indication information carried in the broadcast message received by the receiving unit 902, where the third indication information indicates that the PBCH transmission is performed within the acquired system bandwidth of the cell Second transmission position;

The receiving unit 902 is specifically configured to receive the SCH at a first transmission location of the system bandwidth acquired by the acquiring unit 901; and/or receive the PBCH at a second transmission location of the system bandwidth acquired by the acquiring unit 901.

FIG. 10 is a structural diagram of another base station according to an embodiment of the present invention. The base station is configured to perform a method for transmitting a downlink physical channel according to an embodiment of the present invention, where the base station includes: a memory 1001, a processor 1002, and a communication interface 1003.

The memory 1001 is configured to store program instructions;

The processor 1002 is configured to perform the following operations according to the program instructions stored in the memory 1001:

Adjusting a system bandwidth of a cell managed by the base station when a preset trigger condition is met;

The downlink physical channel of the cell is transmitted through the communication interface 1003 within the adjusted system bandwidth of the cell.

Optionally, the processor 1002 performs, according to the program instruction stored in the memory 1001, an operation of adjusting a system bandwidth of a cell managed by the base station, including:

Adjusting the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station.

Optionally, the performing, by the processor 1002, the operation of adjusting the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell managed by the base station, according to the program instruction stored in the memory 1001, includes:

Adjusting, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the time domain; and/or,

Adjusting, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the frequency domain; and/or,

Adjusting the system bandwidth of the cell in the airspace according to the traffic volume and/or service priority of the cell managed by the base station.

Optionally, the processor 1002 is executed according to the program instructions stored in the memory 1001. The operation of adjusting the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell managed by the base station includes:

Adjusting a system bandwidth of the cell according to a system-wide bandwidth of the cell managed by the base station, a load of the system-wide bandwidth, a traffic volume of the cell, and/or a service priority.

Optionally, after the processor 1002 performs, according to the program instruction stored in the memory 1001, an operation of adjusting a system bandwidth of the cell according to a traffic and/or a service priority of a cell managed by the base station, The processor 1002 is further configured to perform the following operations according to the program instructions stored in the memory 1001:

The broadcast message of the cell is sent by the communication interface 1003, where the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell.

Optionally, the processor 1002 performs, according to the program instruction stored in the memory 1001, an operation of transmitting, by using the communication interface 1003, a downlink physical channel of the cell, including :

Transmitting at least one of the SCH, the PBCH, and the downlink control channel of the cell through the communication interface 1003, and transmitting the CRS through the communication interface 1003, within the adjusted system bandwidth of the cell.

Optionally, the processor 1002 executes, according to the program instruction stored in the memory 1001, within the adjusted system bandwidth of the cell, and sends at least one of the SCH and the PBCH of the cell by using the communication interface 1003. Kinds of operations, including:

Transmitting, by the communication interface 1003, the SCH of the cell in a first preset transmission location within the system bandwidth of the adjusted cell; and/or,

And transmitting, by the communication interface 1003, the PBCH of the cell in the second preset transmission location within the adjusted system bandwidth of the cell.

Optionally, the processor 1002 executes, according to the program instruction stored in the memory 1001, within the adjusted system bandwidth of the cell, and sends at least one of the SCH and the PBCH of the cell by using the communication interface 1003. Kinds of operations, including:

Determining a first transmission location within the adjusted system bandwidth of the cell, transmitting, by the communication interface 1003, the SCH of the cell at the first transmission location; and/or,

Determining a second transmission location within the adjusted system bandwidth of the cell, and transmitting, by the communication interface 1003, the PBCH of the cell at the second transmission location.

Optionally, after the processor 1002 performs an operation of determining a first transmission location within the adjusted system bandwidth of the cell according to the program instruction stored in the memory 1001, the processor 1002 is further configured to The program instructions stored in the memory 1001 perform the following operations:

Transmitting, by the communication interface 1003, a broadcast message of the cell, where the broadcast message carries second indication information, where the second indication information is used to indicate the first transmission location; and/or,

After the processor 1002 performs an operation of determining a second transmission location within the adjusted system bandwidth of the cell according to the program instructions stored in the memory 1001, the processor 1002 is further configured to use the memory 1001 according to the memory 1001. The program instructions stored in it do the following:

And transmitting, by the communication interface 1003, a broadcast message of the cell, where the broadcast message carries third indication information, where the third indication information is used to indicate the second transmission location.

Figure 11 is a block diagram of another UE according to an embodiment of the present invention. The UE is configured to perform a method for receiving a downlink physical channel according to an embodiment of the present invention. The UE includes: a memory 1101, a processor 1102, and a communication interface 1103.

The memory 1101 is configured to store program instructions;

The processor 1102 is configured to perform the following operations according to the program instructions stored in the memory 1101:

Obtaining a system bandwidth of a cell to which the UE belongs;

Within the acquired system bandwidth of the cell, the downlink physical channel of the cell is received through the communication interface 1103.

Optionally, the performing, by the processor 1102, an operation of acquiring a system bandwidth of a cell to which the UE belongs according to the program instruction stored in the memory 1101, including:

Obtaining a system bandwidth of a cell to which the UE belongs in the time domain; and/or,

Obtaining a system bandwidth of a cell to which the UE belongs in the frequency domain; and/or,

Obtaining a system bandwidth of the cell to which the UE belongs in the airspace.

Optionally, the performing, by the processor 1102, an operation of acquiring a system bandwidth of a cell to which the UE belongs according to the program instruction stored in the memory 1101, including:

Receiving, by the communication interface 1103, a broadcast message sent in a cell to which the UE belongs;

Obtaining first indication information carried in the broadcast message, where the first indication information indicates a system bandwidth of the cell.

Optionally, the processor 1102 is configured to perform, according to the program instruction stored in the memory 1101, the downlink physical channel of the cell, by using the communication interface 1103, in the system bandwidth of the acquired cell, including:

Receiving, by the communication interface 1103, at least one of a SCH, a PBCH, and a downlink control channel of the cell, and receiving a CRS, within the obtained system bandwidth of the cell.

Optionally, the processor 1102 performs, according to the program instruction stored in the memory 1101, at least one of a SCH and a PBCH of the cell by using the communication interface 1103 within a system bandwidth of the acquired cell. Operations, including:

Receiving, by the communication interface 1103, the first preset transmission location within the obtained system bandwidth of the cell; and/or,

The PBCH is received through the communication interface 1103 at the second preset transmission location within the acquired system bandwidth of the cell.

Optionally, the processor 1102 performs, according to the program instruction stored in the memory 1101, at least one of a SCH and a PBCH of the cell by using the communication interface 1103 within a system bandwidth of the acquired cell. Operations, including:

Receiving, by the communication interface 1103, a broadcast message sent in the cell;

Acquiring the second indication information carried in the broadcast message, where the second indication information indicates that the transmission of the SCH is performed in the first transmission location within the acquired system bandwidth of the cell; and/or,

Acquiring the third indication information carried in the broadcast message, where the third indication information indicates Transmitting a PBCH at a second transmission location within the acquired system bandwidth of the cell;

Receiving an SCH through the communication interface 1103 at a first transmission location of the system bandwidth; and/or,

A PBCH is received by the communication interface 1103 at a second transmission location of the system bandwidth.

A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be performed by a program, and the program may be stored in a computer readable storage medium, which is non-transitory ( Non-transitory medium, such as random access memory, read only memory, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc, and any combination thereof.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims (30)

1. A method for transmitting a downlink physical channel, where the method includes:

   The base station adjusts a system bandwidth of a cell managed by the base station when a preset trigger condition is met;

   The base station sends a downlink physical channel of the cell within the adjusted system bandwidth of the cell.
2. The method according to claim 1, wherein the base station adjusts a system bandwidth of a cell managed by the base station, including:

   The base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station.
3. The method according to claim 2, wherein the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station, including:

   The base station adjusts, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the time domain; and/or,

   The base station adjusts, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the frequency domain; and/or,

   The base station adjusts the system bandwidth of the cell in the airspace according to the traffic volume and/or service priority of the cell managed by the base station.
4. The method according to claim 2, wherein the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station, including:

   The base station adjusts the system bandwidth of the cell according to the system-wide bandwidth of the cell managed by the base station, the load of the whole system bandwidth, the traffic volume of the cell, and/or the service priority.
5. The method according to claim 2, wherein after the base station adjusts the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell managed by the base station, the method further includes:

   The base station sends a broadcast message of the cell, where the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell.
6. The method according to any one of claims 1 to 5, wherein the base station transmits the downlink physical channel of the cell in the system bandwidth of the adjusted cell, including:

   The base station transmits at least one of a synchronization channel SCH, a broadcast channel PBCH, and a downlink control channel of the cell, and transmits a common reference signal CRS, within the adjusted system bandwidth of the cell.
7. The method according to claim 6, wherein the base station transmits at least one of the SCH and the PBCH of the cell in the system bandwidth of the adjusted cell, including:

   Transmitting, by the base station, the SCH of the cell in a first preset transmission position within a system bandwidth of the adjusted cell; and/or,

   The base station sends the PBCH of the cell in a second preset transmission position within the adjusted system bandwidth of the cell.
8. The method according to claim 6, wherein the base station transmits at least one of the SCH and the PBCH of the cell in the system bandwidth of the adjusted cell, including:

   Determining, by the base station, a first transmission location within a system bandwidth of the adjusted cell, transmitting an SCH of the cell at the first transmission location; and/or,

   The base station determines a second transmission location within the adjusted system bandwidth of the cell, and transmits a PBCH of the cell at the second transmission location.
9. The method of claim 8, wherein the method further comprises: after the base station determines the first transmission location within the system bandwidth of the adjusted cell, the method further comprising:

   The base station sends a broadcast message of the cell, where the broadcast message carries second indication information, where the second indication information is used to indicate the first transmission location; and/or,

   After the base station determines the second transmission location within the system bandwidth of the adjusted cell, the method further includes:

   The base station sends a broadcast message of the cell, where the broadcast message carries a third indication information, where the third indication information is used to indicate the second transmission location.
10. A method for receiving a downlink physical channel, where the method includes:

    The user equipment UE acquires a system bandwidth of a cell to which the UE belongs;

    The UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell.
11. The method according to claim 10, wherein the acquiring, by the UE, the system bandwidth of the cell to which the UE belongs includes:

    Obtaining, by the UE, a system bandwidth of a cell to which the UE belongs in the time domain; and/or,

    Obtaining, by the UE, a system bandwidth of a cell to which the UE belongs in the frequency domain; and/or,

    The UE acquires the system bandwidth of the cell to which the UE belongs in the airspace.
12. The method according to claim 10, wherein the acquiring, by the UE, the system bandwidth of the cell to which the UE belongs includes:

    Receiving, by the UE, a broadcast message sent in a cell to which the UE belongs;

    Obtaining first indication information carried in the broadcast message, where the first indication information indicates a system bandwidth of the cell.
13. The method according to any one of claims 10 to 12, wherein the UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell, including:

    The UE receives at least one of a synchronization channel SCH, a broadcast channel PBCH, and a downlink control channel of the cell, and receives a common reference signal CRS, within the acquired system bandwidth of the cell.
14. The method according to claim 13, wherein the UE receives at least one of the SCH and the PBCH of the cell within the acquired system bandwidth of the cell, including:

    Receiving, by the UE, the SCH at a first preset transmission location within a system bandwidth of the acquired cell; and/or,

    The UE receives the PBCH at a second preset transmission location within the acquired system bandwidth of the cell.
15. The method according to claim 13, wherein the UE receives at least one of the SCH and the PBCH of the cell within the acquired system bandwidth of the cell, including:

    Receiving, by the UE, a broadcast message sent in the cell;

    Acquiring the second indication information carried in the broadcast message, where the second indication information indicates that the transmission of the SCH is performed in the first transmission location within the acquired system bandwidth of the cell; and/or,

    Acquiring the third indication information carried in the broadcast message, where the third indication information indicates that the PBCH transmission is performed in the acquired second transmission location within the system bandwidth of the cell;

    Receiving an SCH at a first transmission location of the system bandwidth; and/or,

    A PBCH is received at a second transmission location of the system bandwidth.
16. A base station, the base station includes:

    An adjusting unit, configured to adjust a system bandwidth of a cell managed by the base station when a preset trigger condition is met;

    And a sending unit, configured to send, in a system bandwidth of the cell that is adjusted by the adjusting unit, a downlink physical channel of the cell.
17. The base station according to claim 16, wherein the adjusting unit is configured to adjust a system bandwidth of the cell according to a traffic volume and/or a service priority of a cell managed by the base station.
18. The base station according to claim 17, wherein the adjusting unit is specifically configured to:

    Adjusting, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the time domain; and/or,

    Adjusting, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the frequency domain; and/or,

    Adjusting the system bandwidth of the cell in the airspace according to the traffic volume and/or service priority of the cell managed by the base station.
19. The base station according to claim 17, wherein the adjusting unit is specifically configured to: according to a system-wide bandwidth of a cell managed by the base station, a load of the system-wide bandwidth, a traffic volume of the cell, and/or Service priority, adjusting the system bandwidth of the cell.
20. The base station according to claim 17, wherein the sending unit is further configured to:

    After the adjustment unit adjusts the system bandwidth of the cell, the broadcast message of the cell is sent, where the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted unit of the adjustment unit. The system bandwidth of the cell.
21. The base station according to any one of claims 16 to 20, wherein the sending unit is configured to send a synchronization channel of the cell in a system bandwidth of the cell adjusted by the adjusting unit. At least one of a SCH, a broadcast channel PBCH, and a downlink control channel, and a common reference signal CRS.
22. The base station according to claim 21, wherein the sending unit is specifically configured to:

    Transmitting the SCH of the cell in a first preset transmission location within a system bandwidth of the cell after the adjustment unit is adjusted; and/or,

    Transmitting a PBCH of the cell in a second preset transmission location within a system bandwidth of the cell after the adjustment unit is adjusted.
23. A base station according to claim 21, wherein:

    The adjusting unit is further configured to determine a first transmission location within the adjusted system bandwidth of the cell;

    The sending unit is specifically configured to send the SCH of the cell at a first transmission location determined by the adjusting unit; and/or,

    The adjusting unit is further configured to determine a second transmission location within the adjusted system bandwidth of the cell;

    The sending unit is specifically configured to send the PBCH of the cell at a second transmission location determined by the adjusting unit.
24. The base station according to claim 23, wherein the sending unit is further configured to:

    After the adjusting unit determines the first transmission location in the system bandwidth of the adjusted cell, the broadcast message of the cell is sent, where the broadcast message carries the second indication information, and the second indication information is used by the second indication information. Instructing the first transmission location; and/or,

    After the adjusting unit determines the second transmission location in the system bandwidth of the adjusted cell, the broadcast message of the cell is sent, where the broadcast message carries the third indication information, and the third indication information is used by the third indication information. Instructing the second transmission location.
25. A user equipment UE, wherein the UE includes:

    An acquiring unit, configured to acquire a system bandwidth of a cell to which the UE belongs;

    a receiving unit, configured to receive a downlink physical channel of the cell within a system bandwidth of the cell acquired by the acquiring unit.
26. The UE according to claim 25, wherein the obtaining unit is specifically configured to:

    Obtaining a system bandwidth of a cell to which the UE belongs in the time domain; and/or,

    Obtaining a system bandwidth of a cell to which the UE belongs in the frequency domain; and/or,

    Obtaining a system bandwidth of the cell to which the UE belongs in the airspace.
27. The UE according to claim 25, wherein the receiving unit is further configured to receive a broadcast message sent in a cell to which the UE belongs;

    The acquiring unit is specifically configured to acquire first indication information carried in a broadcast message received by the receiving unit, where the first indication information indicates a system bandwidth of the cell.
28. The UE according to any one of claims 25 to 27, wherein the receiving unit is configured to receive a synchronization channel SCH of the cell within a system bandwidth of the cell acquired by the acquiring unit. At least one of a broadcast channel PBCH and a downlink control channel, and a common reference signal CRS.
29. The UE according to claim 28, wherein the receiving unit is specifically configured to:

    Receiving an SCH at a first preset transmission location within a system bandwidth of the cell acquired by the acquiring unit; and/or,

    Receiving a PBCH at a second preset transmission location within a system bandwidth of the cell acquired by the acquiring unit.
30. The UE of claim 28, wherein:

    The receiving unit is further configured to receive a broadcast message sent in the cell;

    The acquiring unit is specifically configured to acquire second indication information carried in the broadcast message received by the receiving unit, where the second indication information indicates that the transmission of the SCH is performed in the first system bandwidth of the acquired cell. Transmitting a location; and/or acquiring third indication information carried in the broadcast message received by the receiving unit, where the third indication information indicates that the PBCH transmission is performed in the obtained a second transmission location within a system bandwidth of the cell;

    The receiving unit is specifically configured to receive the SCH at a first transmission location of the system bandwidth acquired by the acquiring unit, and/or receive the PBCH at a second transmission location of the system bandwidth acquired by the acquiring unit.

Images