CN107295668B - Data transmission method and device - Google Patents
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- CN107295668B CN107295668B CN201610206837.0A CN201610206837A CN107295668B CN 107295668 B CN107295668 B CN 107295668B CN 201610206837 A CN201610206837 A CN 201610206837A CN 107295668 B CN107295668 B CN 107295668B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
Abstract
The invention provides a data transmission method and a data transmission device, wherein the method comprises the following steps: dividing a downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit; cell-level broadcast data and reference signals corresponding to the cell-level broadcast data are transmitted through downlink broadcast data time domain units, and user-level data and reference signals corresponding to the user-level data are transmitted through downlink service data time domain units. The invention solves the problem that the cell level and user level data in the related technical scheme can only distinguish different signal shaping requirements in the time domain.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a data transmission method and apparatus.
Background
With the introduction of multi-antenna technology, it is possible to support larger data traffic and longer cell coverage distances today with the rapid development of wireless communication technology.
With the subsequent further application of the Massive MIMO technology, Multiple antennas can be used to form narrower beams to reduce interference between users, and signal-to-noise ratio level of user signals is improved to support a more efficient code modulation manner and a longer cell coverage distance, and even a Space Division Multiple Access (SDMA) -based multi-user MIMO (MU-MIMO) can be formed on the same time-frequency domain resource through quasi-orthogonality between beams to further improve cell capacity and spectrum efficiency.
For any general wireless communication system, not only user-level traffic channels need to be transmitted, but also cell-level common broadcast channels and common signaling need to be sent in the downlink, because of different directional characteristics, broadcast data need to be sent to all users in a cell, and user-level data only needs to be transmitted to a specific user.
Generally, in wireless communication with multiple antennas, smart antenna technology is adopted, cell-level data and user-level data are correspondingly transmitted based on cell-level broadcast beams and user-level dedicated beams, because the coverage of the broadcast beam is significantly larger than the user-level beam, the beamforming gain of the user-level beam is significantly larger than the broadcast beam, fig. 1a to 1b are directional diagrams of an 8-antenna broadcast beam and a user-level dedicated beam directed to a terminal in TD LTE in the related art, as shown in fig. 1a to 1b, a comparison of an 8-antenna broadcast beam and a shaped beam, therefore, the signal quality of the broadcast data received by the terminal under the same transmitting power is obviously inferior to that of the user-level data, and the difference can be relieved only by reducing the modulation mode, the coding efficiency and the like of the broadcast data, thereby causing the waste of spectrum resources.
In the existing communication system protocol, cell-level and user-level data (including reference signals required for demodulation) are usually transmitted in the same time domain resource, and must be shaped by using a baseband shaping method, and with the development of antenna technology, especially in order to meet the requirements of ultra-large cell radius such as aviation coverage, a narrow beam antenna capable of forming beam shaping according to terminal information on a radio frequency side is introduced to enhance the quality of received signals.
In view of the above problems in the related art, no effective solution exists at present.
Disclosure of Invention
The invention provides a data transmission method and a data transmission device, which at least solve the problem that cell-level and user-level data in the related technology can only distinguish different signal forming requirements in a time domain.
According to an aspect of the present invention, there is provided a data transmission method, including: dividing a downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit; transmitting cell-level broadcast data and a reference signal corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit, and transmitting user-level data and a reference signal corresponding to the user-level data through the downlink service data time domain unit.
Optionally, the downlink time domain unit is divided by: cell-level broadcast beamforming, user-level directional beamforming.
Optionally, the number of downlink broadcast data time domain units that need to be occupied is determined by at least one of: the data size of the downlink broadcast transmission, the budget of the downlink broadcast transmission link and the planning of the downlink broadcast transmission network.
Optionally, in a frequency division duplex FDD system, the position of the downlink broadcast data time domain unit is any time domain unit time of a downlink frequency band; in the TDD system, the position of the downlink broadcast data time domain unit is positioned outside the non-uplink time domain unit and the GP time domain unit for uplink and downlink subframe conversion.
Optionally, the cell-level broadcast data includes: broadcasting signaling and broadcasting data; the reference signal corresponding to the cell-level broadcast data comprises: a reference signal corresponding to the broadcast signaling, a reference signal corresponding to the broadcast data; the base station antenna corresponding to the downlink broadcast data time domain unit adopts broadcast beam forming; the user-level data includes: user-level signaling, user-level data; corresponding to the user-level data includes: a reference signal corresponding to the user-level signaling, a reference signal corresponding to the user-level data; and the base station antenna corresponding to the downlink service data time domain unit adopts directional beam forming based on user level.
Optionally, the method further comprises: when cell-level broadcast data and a reference signal corresponding to the cell-level broadcast data are transmitted through the downlink broadcast data time domain unit, the power of transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data time domain unit is increased; wherein the total transmission power is kept unchanged by reducing the scheduling of the downlink service data time domain unit.
Optionally, the time domain unit is at least one of: subframe, time domain, symbol.
According to another aspect of the present invention, there is provided a data transmission apparatus including: the dividing module is used for dividing the downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit; and the transmission module is used for transmitting the cell-level broadcast data and the reference signals corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit, and transmitting the user-level data and the reference signals corresponding to the user-level data through the downlink service data time domain unit.
Optionally, the dividing module divides the downlink time domain unit according to the following manner: cell-level broadcast beamforming, user-level directional beamforming.
Optionally, the number of downlink broadcast data time domain units that need to be occupied is determined by at least one of: the data size of the downlink broadcast transmission, the budget of the downlink broadcast transmission link and the planning of the downlink broadcast transmission network.
Optionally, in a frequency division duplex FDD system, the location of the downlink broadcast data time domain unit is located at any time of the time domain unit of the downlink frequency band; in the TDD system, the position of the downlink broadcast data time domain unit is positioned outside the non-uplink time domain unit and the GP time domain unit for uplink and downlink subframe conversion.
Optionally, the cell-level broadcast data includes: broadcasting signaling and broadcasting data; the reference signal corresponding to the cell-level broadcast data comprises: a reference signal corresponding to the broadcast signaling, a reference signal corresponding to the broadcast data; the base station antenna corresponding to the downlink broadcast data time domain unit adopts broadcast beam forming; the user-level data includes: user-level signaling, user-level data; corresponding to the user-level data includes: a reference signal corresponding to the user-level signaling, a reference signal corresponding to the user-level data; and the base station antenna corresponding to the downlink service data time domain unit adopts user-level-based directional beam forming.
Optionally, the apparatus further comprises: a boost module for boosting power of transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data time domain unit when transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit; wherein the total transmission power is kept unchanged by reducing the scheduling of the downlink service data time domain unit.
Optionally, the time domain unit is at least one of: subframe, time domain, symbol.
According to the invention, the downlink time domain unit is divided into the downlink broadcast data time domain unit and the downlink service data time domain unit, and then the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data are transmitted through the downlink broadcast data time domain unit, and the user-level data and the reference signal corresponding to the user-level data are transmitted through the downlink service data time domain unit, so that the way that different shaping and resource allocation strategies are applied to the cell-level and user-level data is supported, the problem that the cell-level and user-level data can only distinguish different signal shaping requirements in the time domain in the related technology is solved, and the coverage and performance of the cell are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIGS. 1a 1b are diagrams of an 8-antenna broadcast beam and a user-level dedicated beam directed to a terminal in TD LTE in the related art;
fig. 2 is a flowchart of a transmission method of data according to an embodiment of the present invention;
fig. 3 is a block diagram of a structure of a data transmission apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an uplink and downlink frame structure according to an alternative embodiment of the present invention;
fig. 5 is a schematic diagram of a frame structure of a downlink traffic subframe according to an alternative embodiment of the present invention;
fig. 6 is a diagram illustrating a frame structure of a downlink broadcast subframe according to an alternative embodiment of the present invention;
fig. 7 is a schematic diagram of an uplink and downlink frame structure according to a second alternative embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In this embodiment, a data transmission method is provided, and fig. 2 is a flowchart of a data transmission method according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202: dividing a downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit;
step S204: cell-level broadcast data and reference signals corresponding to the cell-level broadcast data are transmitted through downlink broadcast data time domain units, and user-level data and reference signals corresponding to the user-level data are transmitted through downlink service data time domain units.
Through the above steps S202 and S204 in this embodiment, a downlink subframe is divided into a downlink broadcast data time domain unit and a downlink service data time domain unit, and then cell-level broadcast data and a reference signal corresponding to the cell-level broadcast data are transmitted through the downlink broadcast data time domain unit, and user-level data and a reference signal corresponding to the user-level data are transmitted through the downlink service data time domain unit, so that it is possible to support different shaping and resource allocation strategies for cell-level and user-level data, solve the problem that cell-level and user-level data can only distinguish different signal shaping requirements in the time domain in the related art, and achieve coverage and performance improvement of a cell.
It should be noted that, in an optional implementation manner of this embodiment, the downlink time domain unit is divided by: cell-level broadcast beamforming, user-level directional beamforming; in addition, the time domain units involved in this embodiment may be: a subframe, a slot, or a symbol.
In another optional implementation manner of this embodiment, the number of time domain units of downlink broadcast data involved in this embodiment is determined by one of the following methods: the data size of the downlink broadcast transmission, the budget of the downlink broadcast transmission link and the planning of the downlink broadcast transmission network.
In addition, the positions of the time domain units of the downlink broadcast data involved in this embodiment are not consistent in different systems, for example, in a Frequency Division Duplex (FDD) system, the positions of the time domain units of the downlink broadcast data are arbitrary time domain unit moments of a downlink Frequency band; in a Time Division Duplex (TDD) system, the position of the downlink broadcast data Time domain unit is located outside the GP subframe converted from the non-uplink Time domain unit and the uplink and downlink Time domain units. In which, regardless of which system, the positions of the downlink broadcast data time domain units involved in the present embodiment may be continuous or discontinuous.
In another optional implementation manner of this embodiment, the cell-level broadcast data involved in this embodiment includes: broadcasting signaling and broadcasting data; the reference signal corresponding to the cell-level broadcast data includes: a reference signal corresponding to the broadcast signaling, a reference signal corresponding to the broadcast data; the base station antenna corresponding to the downlink broadcast data time domain unit adopts broadcast beam forming;
the user-level data includes: user-level signaling, user-level data; corresponding to user-level data includes: a reference signal corresponding to user-level signaling, a reference signal corresponding to user-level data; and the base station antenna corresponding to the downlink service data time domain unit adopts user-level-based directional beam forming.
In order to support farther cell coverage and higher performance, the method of this embodiment may further include: when cell-level broadcast data and reference signals corresponding to the cell-level broadcast data are transmitted through a downlink broadcast data time domain unit, the power of transmitting the cell-level broadcast data and the reference signals corresponding to the cell-level broadcast data time domain unit is increased; wherein, the scheduling of the downlink service data time domain unit is reduced to keep the total transmission power unchanged.
In addition, pilot symbols in a downlink broadcast or service data time domain unit can be different, and the adopted code rate, modulation mode and the like can also be different; based on the downlink frame structure in this embodiment, the terminal uses different channel estimation and equalization algorithms in different subframes (time slots) for this new downlink frame structure.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
In this embodiment, a data transmission device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and the description of the device that has been already made is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 3 is a block diagram of a data transmission apparatus according to an embodiment of the present invention, as shown in fig. 3, the apparatus including: a dividing module 32, configured to divide the downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit; and a transmission module 34, coupled to the dividing module 32, for transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit, and transmitting the user-level data and the reference signal corresponding to the user-level data through the downlink service data time domain unit.
Optionally, the dividing module related in this embodiment divides the downlink time domain unit according to the following manner: time domain forming; wherein the time domain assignment includes: cell-level broadcast beamforming, user-level directional beamforming.
In addition, the number of time domain units of the downlink broadcast data involved in this embodiment may be determined by at least one of the following methods: the data size of the downlink broadcast transmission, the budget of the downlink broadcast transmission link and the planning of the downlink broadcast transmission network.
It should be noted that, for different communication systems, the positions of the downlink broadcast data time domain units involved in this embodiment are different, for example, in a frequency division duplex FDD system, the positions of the downlink broadcast data time domain units are located at the time of any time domain unit of a downlink frequency band; in the TDD system, the position of the downlink broadcast data time domain unit is located outside the non-uplink time domain unit and the GP time domain unit converted from the uplink time domain unit and the downlink time domain unit. In any system, the positions of the downlink broadcast data time domain units involved in the present embodiment are continuous or discontinuous.
It should be noted that, in another optional implementation manner of this embodiment, the cell-level broadcast data related to this embodiment includes: broadcasting signaling and broadcasting data; the reference signal corresponding to the cell-level broadcast data includes: a reference signal corresponding to the broadcast signaling, a reference signal corresponding to the broadcast data; the base station antenna corresponding to the downlink broadcast data time domain unit adopts broadcast beam forming; the user-level data includes: user-level signaling, user-level data; corresponding to user-level data includes: a reference signal corresponding to user-level signaling, a reference signal corresponding to user-level data; and the base station antenna corresponding to the downlink service data time domain unit adopts user-level-based directional beam forming.
Optionally, the apparatus in this embodiment further includes: the device comprises a lifting module, a receiving module and a processing module, wherein the lifting module is used for lifting and transmitting the power of cell-level broadcast data and reference signals corresponding to cell-level broadcast data time domain units when the cell-level broadcast data and the reference signals corresponding to the cell-level broadcast data are transmitted through downlink broadcast data time domain units; wherein, the scheduling of the downlink service data time domain unit is reduced to keep the total transmission power unchanged.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.
The invention will now be illustrated with reference to an alternative embodiment thereof;
the optional embodiment takes a modification of the LTE protocol as an example, because the LTE system uses Orthogonal Frequency Division Multiplexing (OFDM for short) and MIMO as core technologies, LTE has the advantages of providing higher data rate, larger cell capacity, and lower system delay, and is a mainstream communication system widely used at present, and the application of the LTE protocol to a multi-antenna technology is the most deep in the existing commercial wireless communication systems, and the modification method based on the protocol can also be popularized in other wireless communication systems.
Example one
The optional embodiment adopts a TD LTE system, a 14GHz working frequency band, the coverage radius of a cell is 300km, and the round-trip transmission delay of signals is about 1.99 ms. Fig. 4 is a schematic diagram of an uplink and downlink frame structure according to a first alternative embodiment of the present invention, as shown in fig. 4, the TD LTE scheme is adopted in this embodiment, and in order to support 300km coverage, the GP length of the uplink and downlink converted timeslot needs to be 2 ms. And the rest LTE frame structures given based on the 3GPP LTE protocol are modified. In order to support 300km cell coverage, 5 continuous subframes are allocated to the uplink for supporting the access of edge UE; meanwhile, in order to increase the ratio of downlink subframes to uplink subframes (generally, downlink services of a terminal in a wireless communication system are all larger than uplink), two consecutive radio frames in the LTE protocol are combined into 1 superframe, wherein even radio frames are used as downlink subframes.
And the C and D subframes are downlink subframes and respectively correspond to a downlink broadcast subframe and a downlink service subframe. The C subframe time is used for carrying common signals and channels such as a Downlink synchronization signal, a Physical Broadcast Channel (PBCH), a System Information Block (SIB), a paging and a Physical Downlink Control Channel (PDCCH), and the base station antenna transmits using a wide beam.
For the D subframe, the first 3 symbols are fixed as downlink broadcast transmission time slots, the downlink broadcast transmission time slots bear channels such as PDCCH and PHICH and corresponding reference signals, and the base station antenna at the corresponding moment adopts broadcast beams for transmission; the remaining following symbols are defined as Downlink service transmission time slots, UE-level Physical Downlink Shared Channel (PDSCH) level Downlink data and corresponding Downlink reference signals carried by the Downlink service transmission time slots are the same as Downlink subframes of a conventional LTE protocol in mapping method and position, and at this time, the base station antenna uses narrow beam forming for transmission, and fig. 5 is a schematic diagram of a frame structure of a Downlink service subframe according to a first alternative embodiment of the present invention, which can be specifically shown in fig. 5.
For the C subframe, because it carries downlink data and signaling of the cell, the pilot frequency and the like of the C subframe are redesigned as shown in fig. 6, and fig. 6 is a schematic diagram of a frame structure of a downlink broadcast subframe according to an alternative embodiment of the present invention. The CRS only occupies 2 OFDM symbols, wherein the power of the CRS symbols can be increased, and a corresponding spare part of REs is needed to ensure that the power does not exceed the rated transmission power. The PDSCH carries cell-level signaling and data such as SIB and paging.
Example two
The alternative embodiment adopts the FDD LTE scheme, the uplink and downlink subframe matching condition in this case is shown in fig. 7, fig. 7 is a schematic diagram of the uplink and downlink frame structure according to the second alternative embodiment of the present invention, and more cell broadcast data (video broadcast service) are required to be supported in this scheme, so that more downlink broadcast subframes are allocated, and the rest are consistent with the LTE protocol.
The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:
step S1: dividing a downlink subframe into a downlink broadcast data subframe and a downlink service data subframe;
step S2: transmitting cell-level broadcast data and reference signals corresponding to the cell-level broadcast data through downlink broadcast data subframes, and transmitting user-level data and reference signals corresponding to the user-level data through downlink traffic data subframes.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for transmitting data, comprising:
dividing a downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit, wherein the downlink time domain unit is divided through cell-level broadcast beam forming and user-level directional beam forming;
transmitting cell-level broadcast data and a reference signal corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit, and transmitting user-level data and a reference signal corresponding to the user-level data through the downlink service data time domain unit;
when cell-level broadcast data and a reference signal corresponding to the cell-level broadcast data are transmitted through the downlink broadcast data time domain unit, the power of transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data time domain unit is increased; wherein the total transmission power is kept unchanged by reducing the scheduling of the downlink service data time domain unit.
2. The method of claim 1, wherein the number of downlink broadcast data time domain units to be occupied is determined by at least one of: the data size of the downlink broadcast transmission, the budget of the downlink broadcast transmission link and the planning of the downlink broadcast transmission network.
3. The method of claim 1,
in a frequency division duplex FDD system, the position of the downlink broadcast data time domain unit is any time domain unit moment of a downlink frequency band;
in the TDD system, the position of the downlink broadcast data time domain unit is positioned outside the non-uplink time domain unit and the GP time domain unit for uplink and downlink subframe conversion.
4. The method of claim 1,
the cell-level broadcast data includes: broadcasting signaling and broadcasting data; the reference signal corresponding to the cell-level broadcast data comprises: a reference signal corresponding to the broadcast signaling, a reference signal corresponding to the broadcast data; the base station antenna corresponding to the downlink broadcast data time domain unit adopts broadcast beam forming;
the user-level data includes: user-level signaling, user-level data; corresponding to the user-level data includes: a reference signal corresponding to the user-level signaling, a reference signal corresponding to the user-level data; and the base station antenna corresponding to the downlink service data time domain unit adopts user-level-based directional beam forming.
5. The method of any of claims 1 to 4, wherein the time domain unit is at least one of: subframe, time domain, symbol.
6. An apparatus for transmitting data, comprising:
the device comprises a dividing module, a receiving module and a processing module, wherein the dividing module is used for dividing a downlink time domain unit into a downlink broadcast data time domain unit and a downlink service data time domain unit, and the downlink time domain unit is divided through cell-level broadcast beam forming and user-level directional beam forming; a transmission module, configured to transmit cell-level broadcast data and a reference signal corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit, and transmit user-level data and a reference signal corresponding to the user-level data through the downlink service data time domain unit;
the device further comprises:
a boost module for boosting power of transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data time domain unit when transmitting the cell-level broadcast data and the reference signal corresponding to the cell-level broadcast data through the downlink broadcast data time domain unit; wherein the total transmission power is kept unchanged by reducing the scheduling of the downlink service data time domain unit.
7. The apparatus of claim 6, wherein the number of downlink broadcast data time domain units to be occupied is determined by at least one of: the data size of the downlink broadcast transmission, the budget of the downlink broadcast transmission link and the planning of the downlink broadcast transmission network.
8. The apparatus of claim 6,
in a frequency division duplex FDD system, the position of the downlink broadcast data time domain unit is positioned at any time of the time domain unit of a downlink frequency band;
in the TDD system, the position of the downlink broadcast data time domain unit is positioned outside the non-uplink time domain unit and the GP time domain unit for uplink and downlink subframe conversion.
9. The apparatus of claim 6,
the cell-level broadcast data includes: broadcasting signaling and broadcasting data; the reference signal corresponding to the cell-level broadcast data comprises: a reference signal corresponding to the broadcast signaling, a reference signal corresponding to the broadcast data; the base station antenna corresponding to the downlink broadcast data time domain unit adopts broadcast beam forming;
the user-level data includes: user-level signaling, user-level data; corresponding to the user-level data includes: a reference signal corresponding to the user-level signaling, a reference signal corresponding to the user-level data; and the base station antenna corresponding to the downlink service data time domain unit adopts user-level-based directional beam forming.
10. The apparatus of any of claims 6 to 9, wherein the time domain unit is at least one of: subframe, time domain, symbol.
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| CN111130721B (en) * | 2018-10-31 | 2022-06-14 | 华为技术有限公司 | Data transmission method and device |
| WO2020087353A1 (en) * | 2018-10-31 | 2020-05-07 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device and network device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104412638A (en) * | 2013-08-20 | 2015-03-11 | 华为技术有限公司 | Communication method and device |
| CN104718775A (en) * | 2013-09-12 | 2015-06-17 | 华为技术有限公司 | Method, apparatus and base station for sending information |
Family Cites Families (1)
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|---|---|---|---|---|
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-
2016
- 2016-04-05 CN CN201610206837.0A patent/CN107295668B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104412638A (en) * | 2013-08-20 | 2015-03-11 | 华为技术有限公司 | Communication method and device |
| CN104718775A (en) * | 2013-09-12 | 2015-06-17 | 华为技术有限公司 | Method, apparatus and base station for sending information |
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