WO2018059597A1

WO2018059597A1 - Broadcast coverage method and apparatus

Info

Publication number: WO2018059597A1
Application number: PCT/CN2017/105176
Authority: WO
Inventors: 牛丽
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-09-30
Filing date: 2017-09-30
Publication date: 2018-04-05
Also published as: CN107889121B; CN107889121A

Abstract

Proposed are a broadcast coverage method and apparatus, which relate to the technical field of communications. The solution comprises: within a cell range covered by a base station, using narrow-beam beamforming to transmit a data physical channel at a data moment; using omnidirectional beamforming to transmit a broadcast physical channel at a broadcast moment; and performing power compensation on the broadcast physical channel. In the present application, in order to balance the coverage range of a broadcast physical channel and that of a data physical channel, power compensation is performed on the broadcast physical channel, thereby enhancing the transmitting power of the broadcast physical channel, and thus increasing the coverage range of a broadcast channel.

Description

Method and device for broadcasting coverage

Technical field

The present application relates to the field of communication technologies, for example, to a method and apparatus for broadcast coverage.

Background technique

The mobile communication network is experiencing an expansion of terminal data traffic. The 5G (5th-Generation, fifth-generation mobile communication technology) network can achieve ultra-high speed, high throughput, ultra-high reliability, ultra-low latency and other indicators. Users provide the best experience. However, the current use efficiency of the frequency band below 6 GHz is close to the theoretical limit. Therefore, both academia and industry believe that the higher frequency band mmWave (millimeter wave) will be an important way to achieve future 5G communication.

Although the high frequency band has a large available bandwidth, the high frequency has the disadvantages of large loss and small coverage area. In order to increase the coverage area of the high frequency band, beamforming technology can be used.

However, in a multi-antenna system, such as for a broadcast channel, transmissions need to be made within full coverage so that all users in the cell can receive broadcast information. Moreover, the broadcast information needs to be transmitted in a fixed cycle. Considering that the user is mobile, during the user's movement, the received broadcast information should be continuable and can be combined to improve the reliability of the broadcast information. Therefore, the broadcast channel needs to be omnidirectional beamforming.

For the data channel, only the user who needs to perform data transmission can be sent. When there are many users in the cell that need to perform data transmission, the user and the service can be prioritized, and the data is selectively provided to the user according to the priority. transmission. This not only satisfies the Qos (Quality of Service) of the user service, but also ensures coverage, so the transmitter can perform beamforming of the narrow beam.

However, since the broadcast channel adopts omnidirectional beamforming, the shaping gain of the broadcast channel is relatively small; conversely, since the data channel adopts beamforming of a narrow beam, the shaping gain of the data channel is relatively large. This will result in inconsistent coverage of the broadcast channel and the data channel, that is, the coverage of the data channel is much larger than the coverage of the broadcast channel. This will have a great impact on the networking of multi-antenna systems. Therefore, it is necessary to increase the coverage of the broadcast channel so that the broadcast channel and the data channel The coverage is consistent.

Summary of the invention

The present disclosure provides a method and apparatus for broadcast coverage, which ensures that the coverage of the broadcast channel and the data channel are consistent while ensuring smooth access by the user.

The present disclosure provides a method of broadcast coverage, including:

In the range of the cell covered by the base station, the data channel is transmitted by using a beamforming of a narrow beam at the data time; the broadcast physical channel is transmitted by using the omnidirectional beamforming at the broadcast time, and the broadcast physical channel is power compensated.

The transmitting data physical channel may include:

The data physical channel is transmitted using full bandwidth.

The transmitting a broadcast physical channel may include:

The broadcast physical channel is transmitted using a partial bandwidth.

The performing power compensation on the broadcast physical channel may include:

During the broadcast time, no signal is sent on the preset frequency domain resource, and the power on the preset frequency domain resource is loaded onto the broadcast physical channel, so that the bandwidth of the broadcast physical channel adopts a partial bandwidth.

The preset frequency domain resource may be determined according to at least one of the following information:

The frequency point corresponding to the frequency domain resource, the fading condition of the broadcast physical channel, and the cell range covered by the base station.

The present disclosure also provides a device for broadcast coverage, including:

a data sending module, configured to transmit a data physical channel by using a narrow beam beamforming at a data time in a cell coverage area covered by the base station;

The broadcast module is configured to transmit a broadcast physical channel by using an omnidirectional beamforming at a broadcast time, and a compensation module configured to perform power compensation on the broadcast physical channel.

The data sending module can be set to:

The data physical channel is transmitted using full bandwidth.

The broadcast module can be set to:

The broadcast physical channel is transmitted using a partial bandwidth.

The compensation module can be set to:

The broadcast module may determine the preset frequency domain resource according to at least one of the following information:

Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions arranged to perform the above method.

An embodiment of the present disclosure further provides an electronic device, including:

At least one processor;

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.

The solution proposed by the present disclosure, the data physical channel, uses a narrow beam beamforming technology to transmit data for the user, and the broadcast signal adopts an omnidirectional transmission technology, and the broadcast physical channel is performed to balance the coverage of the broadcast physical channel and the data physical channel. Power compensation, that is, during the broadcast time, no signal is transmitted on some frequency domain resources, and the power on the part of the frequency domain resource is loaded onto the broadcast physical channel, thereby increasing the transmission power of the broadcast physical channel, thereby increasing the broadcast channel. Coverage.

BRIEF abstract

1 is a flowchart of a method of broadcast overlay according to an embodiment of the present disclosure;

2 is a schematic structural diagram of an apparatus for broadcasting coverage according to an embodiment of the present disclosure;

3 is a schematic diagram of bandwidths of a broadcast physical channel and a data physical channel according to an embodiment of the present disclosure;

4 is a schematic diagram of coverage of a broadcast physical channel and a data physical channel according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

detailed description

In order to make the technical solutions and the beneficial effects of the present disclosure more clarified, the embodiments of the present disclosure will be described below with reference to the accompanying drawings, and the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other without conflict.

As shown in FIG. 1 , an embodiment of the present disclosure provides a method for broadcast coverage, including:

The cell provides two types of services for the user: a broadcast data service and a service data service, wherein the broadcast data is transmitted through a broadcast physical channel, and the service data is transmitted through the data physical channel.

Embodiments of the present disclosure perform time division transmission on a broadcast physical channel and a data physical channel, and broadcast a physical channel at a broadcast time, and transmit a data physical channel at a data moment. For the data physical channel, a narrow beam beamforming technique is adopted, and the bandwidth is full bandwidth, and the data is transmitted for the user. The direction in which the narrow beam is generated changes according to the user's situation, and the data is transmitted to the users in the cell at different times. For broadcast physical channels, omnidirectional transmission techniques are employed. In order to balance the coverage of the broadcast channel and the data channel, power compensation is performed on the broadcast physical channel.

The transmitting data physical channel includes:

The data physical channel is transmitted using full bandwidth.

The transmitting a broadcast physical channel includes:

The broadcast physical channel is transmitted using a partial bandwidth.

The power compensation for the broadcast physical channel includes:

In the embodiment of the present disclosure, during the broadcast time, no signal is sent on the preset frequency domain resource, and the power on the part of the free frequency domain resource is loaded onto the broadcast channel, so that the bandwidth of the broadcast channel becomes part of the bandwidth, thereby improving the broadcast. The transmit power of the channel, which in turn increases the coverage of the broadcast channel, and The coverage of the broadcast channel and the data channel are consistent.

The predetermined frequency domain resource is determined according to at least one of the following information:

As shown in FIG. 2, an embodiment of the present disclosure further provides a device for broadcast coverage, including:

The data sending module can be set to:

The data physical channel is transmitted using full bandwidth.

The broadcast module is set to:

The broadcast physical channel is transmitted using a partial bandwidth.

The compensation module is set to:

The broadcast module is configured to determine the preset frequency domain resource according to at least one of the following information:

Example 1

A cell operates at a high frequency (30 GHz to 60 GHz) and has a multi-antenna system.

Since the high-frequency path loss is large, in order to increase the coverage area, a wave velocity shaping technique is employed.

For user data, the transmitting end of the cell first weights and then transmits the user data to form a narrow beam transmit beam, facing the user. When there are many users in the cell that need to perform data transmission, the user and the service can be prioritized at each data moment, and the direction of the narrow beam is selected according to the priority, and data transmission is provided to some users.

The broadcast signal needs to be directed to the user of the whole cell, and the omnidirectional transmission technology is adopted, but the coverage area is small due to the large path loss of the omnidirectional transmission. In order to balance the coverage of the broadcast channel and the data channel, this is The embodiment performs power compensation on the broadcast channel, that is, in the subframe where the broadcast channel is located, no signal is transmitted on some frequency domain resources, and the power on the part of the null frequency domain resource is loaded onto the broadcast channel, thereby increasing the broadcast channel. The transmit power, which in turn increases the coverage of the broadcast channel.

Example 2

The process of the method for broadcasting coverage provided by the embodiment of the present disclosure is illustrated in conjunction with FIG. 3 and FIG. 4:

The cell needs to have a coverage radius of X m and a transmission power of Y dBm. Then, the data channel adopts a narrow beam beamforming technology with a bandwidth of N; and the broadcast channel adopts an omnidirectional beamforming technique to achieve the same coverage radius. In the case where the total power does not exceed Y dBm, the bandwidth of the reduced transmission is M, and N>>M. As shown in Figure 3.

The broadcast physical channel and the data physical channel are distinguished in a time division manner. At the data time, by prioritizing the users and services that need to perform data transmission in the cell, selecting users and services with higher priority, and generating multiple beams for these users and services, within one beam coverage. Users and services share the entire bandwidth M. For example, at time i and time j, the direction of the generated beam faces is different.

At the time of the broadcast, an omnidirectionally transmitted beam, bandwidth M, is generated covering the entire cell. Since the broadcast information is periodically transmitted, the broadcast information is transmitted at time k and time k+1 (1 is a broadcast information period), so that the periodicity of the broadcast information can be ensured, and if the UE is mobile, it can ensure that the UE can always Received broadcast information.

Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.

The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

The embodiment of the present disclosure further provides a schematic structural diagram of an electronic device. Referring to FIG. 5, the electronic device includes:

At least one processor 50, which is exemplified by a processor 50 in FIG. 5; and a memory 51, may further include a communication interface 52 and a bus 53. among them, The processor 50, the communication interface 52, and the memory 51 can complete communication with each other via the bus 53. Communication interface 52 can be used for information transmission. Processor 50 can invoke logic instructions in memory 51 to perform the methods of the above-described embodiments.

Furthermore, the logic instructions in the memory 51 described above may be implemented in the form of software functional units and sold or used as separate products, and may be stored in a computer readable storage medium.

The memory 51 is used as a computer readable storage medium for storing software programs, computer executable programs, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 50 executes a function application and data processing by executing software programs, instructions, and modules stored in the memory 51, that is, a method of implementing broadcast coverage in the above method embodiments.

The memory 51 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to use of the terminal device, and the like. Further, the memory 51 may include a high speed random access memory, and may also include a nonvolatile memory.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. A medium that can store program code, or a transitory storage medium.

The embodiments disclosed in the present disclosure are as described above, but the contents thereof are only for the purpose of facilitating the understanding of the technical solutions of the present disclosure, and are not intended to limit the present disclosure. Any modifications and variations in the form and details of the embodiments may be made by those skilled in the art without departing from the scope of the present disclosure. It is subject to the scope defined by the appended claims.

Industrial applicability

The method and apparatus for broadcast coverage proposed by the present application increases the transmission power of a broadcast physical channel, thereby increasing the coverage of the broadcast channel.

Claims

A method of broadcast coverage, including:

In the range of the cell covered by the base station, the data channel is transmitted by using a beamforming of a narrow beam at the data time; the broadcast physical channel is transmitted by using the omnidirectional beamforming at the broadcast time, and the broadcast physical channel is power compensated.
The method of claim 1 wherein said transmitting a data physical channel comprises:

The data physical channel is transmitted using full bandwidth.
The method of claim 1 wherein said transmitting a broadcast physical channel comprises:

The broadcast physical channel is transmitted using a partial bandwidth.
The method of claim 1 wherein said powering said broadcast physical channel comprises:

During the broadcast time, no signal is sent on the preset frequency domain resource, and the power on the preset frequency domain resource is loaded onto the broadcast physical channel, so that the bandwidth of the broadcast physical channel adopts a partial bandwidth.
The method of claim 4, wherein the predetermined frequency domain resource is determined according to at least one of the following information:

The frequency point corresponding to the frequency domain resource, the fading condition of the broadcast physical channel, and the cell range covered by the base station.
A broadcast coverage device comprising:

a data sending module, configured to transmit a data physical channel by using a narrow beam beamforming at a data time in a cell coverage area covered by the base station;

a broadcast module, configured to transmit a broadcast physical channel by using an omnidirectional beamforming at a broadcast time;

And a compensation module configured to perform power compensation on the broadcast physical channel.
The apparatus of claim 6 wherein said data transmitting module is configured to:

The data physical channel is transmitted using full bandwidth.
The apparatus of claim 6 wherein said broadcast module is configured to:

The broadcast physical channel is transmitted using a partial bandwidth.
The apparatus of claim 6 wherein said compensation module is configured to:

During the broadcast time, no signal is sent on the preset frequency domain resource, and the power on the preset frequency domain resource is loaded onto the broadcast physical channel, so that the bandwidth of the broadcast physical channel adopts a partial bandwidth.
The apparatus of claim 9, wherein the broadcast module is configured to determine the preset frequency domain resource according to at least one of the following information:

The frequency point corresponding to the frequency domain resource, the fading condition of the broadcast physical channel, and the cell range covered by the base station.
A computer readable storage medium storing computer executable instructions arranged to perform the method of any of claims 1-5.