CN108370560A - Data transmission method, device, terminal and base station - Google Patents

Data transmission method, device, terminal and base station Download PDF

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Publication number
CN108370560A
CN108370560A CN201580085303.0A CN201580085303A CN108370560A CN 108370560 A CN108370560 A CN 108370560A CN 201580085303 A CN201580085303 A CN 201580085303A CN 108370560 A CN108370560 A CN 108370560A
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China
Prior art keywords
down channel
base station
channel quality
downlink data
check bit
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CN201580085303.0A
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CN108370560B (en
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赵雅琪
赵悦莹
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

This application provides data transmission method and devices.The method includes：Base station receives the channel state information that terminal reports, and the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；The base station determines the part to be sent for needing to send in downlink data from the base station to the terminal according to good and bad relationship between first down channel quality and second down channel quality；The base station sends the part to be sent to the terminal.There is provided method and device is provided using part, the possibility of down channel depth attenuation can be reduced during base station is in system position and the check bit for sending downlink data while encounter, so as to improve the robustness of downlink data transmission process.

Description

Data transmission method, device, terminal and base station Technical field
The present invention relates to wireless communication field more particularly to data transmission method, device, terminal and base stations.
Background technique
In order to realize the 5th generation (the 5thGeneration, 5G) the rapid deployment of communication system, 5G develops the framework of first stage, it can be with long term evolution (Long term evolution, abbreviation LTE) technology is as main wireless access technology (Radio Access Technology, abbreviation RAT), and be auxiliary RAT with 5G.In use LTE as main RAT, and using 5G as when auxiliary RAT, macro base station can will be used as using the base station (hereinafter referred to as LTE base station) of LTE RAT, and deployment uses the base station (the hereinafter referred to as base station 5G) of 5G RAT to be used as micro-base station in macro base station coverage area, and then the base station combined dispatching 5G and LTE base station, it realizes and control face data is transmitted by LTE base station, and user face data is transmitted by the base station 5G.
In the prior art, base station is when sending downlink data to terminal, it is encoded firstly the need of to sent downlink data, generates the bit stream information being made of system position and check bit, system position and check bit in bit information flow are successively then sent by down channel again.But since 5G RAT working frequency range is higher, the wave beam stability of signal is poor, therefore the base station 5G, during carrying out data transmission with terminal, it is easy to appear deep fadings for down channel, poor so as to cause the robustness of downlink data transmission.
Summary of the invention
The embodiment of the invention provides data transmission method, device, terminal and base stations, to solve the problems, such as that available data transmission technology is easy to cause the robustness of downlink data transmission poor.
First aspect, the embodiment of the invention provides a kind of data transmission methods, the described method includes: base station receives the channel state information that terminal reports, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；The base station determines the part to be sent in downlink data according to the superiority and inferiority relationship of first down channel quality and second down channel quality；The base station sends the part to be sent to the terminal.
Using the data transmission method, can be combined by multiple down channels of multiple base stations and send downlink data, thus the case where encountering channel depth attenuation during avoiding system position and check bit from sending, so as to improve it is several under The robustness of row data transmission.
With reference to first aspect, in a first possible implementation of that first aspect, the base station determines that it includes: when first down channel quality is inferior to the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the base station is using the check bit of the downlink data as the part to be sent.
With reference to first aspect, in a second possible implementation of that first aspect, the base station determines that it includes: when first down channel quality is inferior to the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the load of another base station be higher than first threshold when, the base station is using the check bit of the downlink data as the part to be sent.
With reference to first aspect, in first aspect in the third possible implementation, the check bit of the downlink data includes the first check bit and the second check bit；The base station determines that it includes: when first down channel quality is inferior to the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the base station is using first check bit as the part to be sent.
With reference to first aspect, in the 4th kind of possible implementation of first aspect, the check bit of the downlink data includes the first check bit and the second check bit；The base station determines that it includes: when first down channel quality is inferior to the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the load of another base station be lower than first threshold when, the base station is using the first check bit of the downlink data as the part to be sent.
With reference to first aspect, in the 5th kind of possible implementation of first aspect, the base station determines that it includes: when first down channel quality is better than the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the base station is using the system position of the downlink data as the part to be sent.
With reference to first aspect, in the 6th kind of possible implementation of first aspect, the base station determines that it includes: when first down channel quality is better than the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the load of the base station be lower than second threshold when, the base station is using the system position of the downlink data as the part to be sent.
With reference to first aspect the 5th or the 6th kind of possible implementation, in the 7th kind of possible implementation of first aspect, the check bit of the downlink data includes the first check bit and the second check bit；The base station determines that it includes: when first down channel quality is better than the second down channel quality that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the base station is using the system position of the downlink data and first check bit as the part to be sent.
With reference to first aspect the 5th or the 6th kind of possible implementation, in the 8th kind of possible implementation of first aspect, the check bit of the downlink data includes the first check bit and the second check bit；The base station determines that it includes: when load of first down channel quality better than the second down channel quality and the base station is lower than second threshold that the part to be sent sent from the base station to the terminal is needed in downlink data according to superiority and inferiority relationship between first down channel quality and second down channel quality, and the base station is using the system position of the downlink data and the first check bit as the part to be sent.
Second aspect, the embodiment of the invention provides another data transmission methods, the described method includes: terminal distinguishes reporting status information of channel to first base station and the second base station, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and second base station and the terminal of down channel between the first base station and the terminal；The terminal receives the downlink data of the first base station Yu the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content of the first part and the second part is determined by the superiority and inferiority relationship of first down channel quality and second down channel quality.
In conjunction with second aspect, in second aspect in the first possible implementation, when first down channel quality is better than second down channel quality, the first part includes the system position of the downlink data, and the second part includes the check bit of the downlink data.
In conjunction with second aspect, in second of second aspect possible implementation, when first down channel quality is better than second down channel quality, the first part includes system position and the first check bit of the downlink data, and the second part includes the second check bit of the downlink data.
In conjunction with second aspect, in second aspect in the third possible implementation, when first down channel quality is inferior to second down channel quality, the first part includes the check bit of the downlink data, and the second part includes the system position of the downlink data.
In conjunction with second aspect, in the 4th kind of possible implementation of second aspect, when first down channel quality is inferior to second down channel quality, the first part includes first check bit of downlink data, and the second part includes system position and the second check bit of the downlink data.
In conjunction with second aspect or the possible implementation any of them of first to fourth kind of second aspect, in the 5th kind of possible implementation of second aspect, before the terminal distinguishes reporting status information of channel to two base stations further include: the terminal determines the first base station and second base station according to high-level signaling.
The third aspect, the embodiment of the invention provides a kind of data transmission devices, described device includes: receiving unit, the channel state information reported for receiving terminal, the channel state information are used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；Determination unit, for determining the part to be sent for needing to send in downlink data from the base station to the terminal according to superiority and inferiority relationship between first down channel quality and second down channel quality；Transmission unit, for sending the part to be sent to the terminal.
In conjunction with the third aspect, in the third aspect in the first possible implementation, the determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, using the downlink data check bit as the part to be sent.
In conjunction with the third aspect, in second of the third aspect possible implementation, the determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, and the load of another base station be higher than first threshold when, using the check bit of the downlink data as the part to be sent.
In conjunction with the third aspect, in the third aspect in the third possible implementation, the determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, using the first check bit of the downlink data as the part to be sent, wherein, the check bit of the downlink data includes first check bit and the second check bit.
In conjunction with the third aspect, in the 4th kind of possible implementation of the third aspect, the determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, and the load of another base station be lower than first threshold when, using the first check bit of the downlink data as the part to be sent, wherein the check bit of the downlink data includes first check bit and the second check bit.
In conjunction with the third aspect, in the 5th kind of possible implementation of the third aspect, the determination unit is specifically used for, when the first down channel quality is better than the second down channel quality, using the system position of the downlink data as the part to be sent.
In conjunction with the third aspect, in the 6th kind of possible implementation of the third aspect, the determination unit is specifically used for, when first down channel quality is better than the second down channel quality, and the load of the base station be lower than second threshold when, using the system position of the downlink data as the part to be sent.
In conjunction with the third aspect the 5th or the 6th kind of possible implementation, the determination unit is specifically used for, when described When one down channel quality is better than the second down channel quality, using the system position of the downlink data and the first check bit as the part to be sent, wherein the downlink data includes the first check bit and the second check bit.
In conjunction with the third aspect the 5th or the 6th kind of possible implementation, the determination unit is specifically used for, when load of first down channel quality better than the second down channel quality and the base station is lower than second threshold, using the system position of the downlink data and the first check bit as the part to be sent, wherein, the downlink data includes the first check bit and the second check bit.
Fourth aspect, the embodiment of the invention provides another data transmission devices, described device includes: reporting unit, for distinguishing reporting status information of channel to first base station and the second base station, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；Receiving unit, for receiving the downlink data of the first base station Yu the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content that the first part and the second part are respectively included is determined by superiority and inferiority relationship between first down channel quality and second down channel quality.
In conjunction with fourth aspect, in fourth aspect in the first possible implementation, when first down channel quality is better than second down channel quality, the first part includes the system position of the downlink data, and the second part includes the check bit of the downlink data.
In conjunction with fourth aspect, in second of fourth aspect possible implementation, when first down channel quality is better than second down channel quality, the first part includes system position and the first check bit of the downlink data, and the second part includes the second check bit of the downlink data.
In conjunction with fourth aspect, in fourth aspect in the third possible implementation, when first down channel quality is inferior to second down channel quality, the first part includes the check bit of the downlink data, and the second part includes the system position of the downlink data.
In conjunction with fourth aspect, in the 4th kind of possible implementation of fourth aspect, when first down channel quality is inferior to second down channel quality, the first part includes first check bit of downlink data, and the second part includes system position and the second check bit of the downlink data.
In conjunction with fourth aspect or the possible implementation any of them of first to fourth kind of fourth aspect, in the 5th kind of possible implementation of fourth aspect, described device further include: determination unit, for determining the first base station and second base station according to high-level signaling.
5th aspect, present invention implementation provide another data transmission method, which comprises base station receives eventually The channel state information reported is held, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein at least two down channel carries out downlink data transmission using different data transmission resources；The base station, which is combined by least two down channel to the terminal, sends downlink data；The channel quality for being wherein better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
In conjunction with the 5th aspect, in the 5th aspect the first possible implementation, the base station is combined by least two down channel includes to terminal transmission downlink data: the base station sends by the first down channel at least two down channel system position of the downlink data to the terminal；The base station sends the check bit of the downlink data by the second down channel at least two down channel to the terminal；Wherein, the channel quality of first down channel is better than the channel quality of second down channel.
In conjunction with the 5th aspect the first possible implementation, in the 5th second of possible implementation of aspect, the base station is combined by least two down channel includes to terminal transmission downlink data: the base station sends system position and the first check bit of the downlink data by the first down channel at least two down channel to the terminal；The base station sends the second check bit of the downlink data by the second down channel at least two down channel to the terminal；Wherein, the channel quality of first down channel is better than the channel quality of second down channel.
In conjunction with the 5th aspect or the 5th possible implementation any of them of aspect first or second kind, the 5th aspect the third possible implementation in, the data transmission resources be the base station antenna port or the base station system bandwidth subband it is wide.
6th aspect, the embodiment of the invention provides another middle data transmission methods, the described method includes: terminal is to base station reporting status information of channel, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；The terminal receives the downlink data that the base station is sent by least two down channel joint, wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
7th aspect, present invention implementation provides another data transmission device, described device includes: receiving unit, the channel state information reported for receiving terminal, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；Transmission unit sends downlink data for combining by least two down channel to the terminal；Wherein, it is better than only for sending the channel quality of the down channel of downlink data system position For the transmission downlink data check bit down channel channel quality.
In conjunction with the 7th aspect, the 7th aspect the first possible implementation in, transmitted unit, specifically for the system position of the downlink data is sent to the terminal by the first down channel at least two down channel, and the downlink data check bit is sent to the terminal by the second down channel at least two down channel, wherein, the channel quality of first down channel is better than the channel quality of second down channel.
In conjunction with the 7th aspect, in the 7th second of possible implementation of aspect, transmitted unit, specifically for system position and the first check bit of the downlink data are sent to the terminal by the first down channel at least two down channel, and the second check bit of the downlink data is sent to the terminal by the second down channel at least two down channel, wherein, the channel quality of first down channel is better than the channel quality of second down channel.
In conjunction with the 7th aspect or the 7th possible implementation any of them of aspect first or second kind, the 7th aspect the third possible implementation in, the data transmission resources be the base station antenna port or the base station system bandwidth subband.
Eighth aspect, the embodiment of the invention provides another middle data transmission devices, described device includes: transmission unit, for to base station reporting status information of channel, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；Receiving unit, the downlink data sent for receiving the base station by least two down channel joint, wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
9th aspect, the embodiment of the invention also provides a kind of base station, the base station includes: processor, memory and communication module.The communication module, the channel state information reported for receiving terminal, the channel state information are used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；The processor, for determining the part to be sent for needing to send in downlink data from the base station to the terminal according to superiority and inferiority relationship between first down channel quality and second down channel quality；The communication module is also used to send the part to be sent to the terminal.
Tenth aspect, the embodiment of the invention also provides another base station, the base station includes: processor, memory and communication module.The communication module, the channel state information reported for receiving terminal, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；And is combined by least two down channel to the terminal and send downlink data；Wherein, for sending the down channel of downlink data system position Channel quality is better than the channel quality of the down channel for the transmission downlink data check bit being only used for.And the superiority and inferiority relationship between the channel quality of at least two down channel is determined by the processor.
Tenth on the one hand, and the embodiment of the invention also provides a kind of terminal, the terminal includes: processor storage and communication module.The communication module, for distinguishing reporting status information of channel to first base station and the second base station, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；And receive the downlink data of the first base station and the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content that the first part and the second part are respectively included is determined by superiority and inferiority relationship between first down channel quality and second down channel quality.The processor is then used to be decoded the downlink data.
12nd aspect, the embodiment of the invention also provides another terminal, the terminal includes: processor, memory and communication module.The communication module, for to base station reporting status information of channel, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein at least two down channel carries out downlink data transmission using different data transmission resources；And receive the downlink data that the base station is sent by least two down channel joint, wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
13rd aspect, the embodiment of the invention also provides a kind of communication systems, comprising: first base station and the second base station.The first base station and second base station are for combining to terminal transmission downlink data.Wherein, the part of the downlink data can be sent from first base station to the terminal, and another part can then be sent from second base station to the terminal.
Fourteenth aspect, the embodiment of the invention also provides a kind of computer storage medium, which can be stored with program, which may include step some or all of in each embodiment of data transmission method provided by the invention when executing.
Using method, apparatus, base station provided by the embodiment of the present invention and terminal, the different piece of downlink data can be sent to terminal by different down channels by base station, a possibility that so as to reduce during base station is in system position and the check bit for sending downlink data while encountering down channel depth attenuation, so as to improve the robustness of downlink data transmission process.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skills, without any creative labor, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the configuration diagram that the wireless communication system of data transmission method of the present invention can be used；
Fig. 2 is the structural schematic diagram of Turbo encoder；
Fig. 3 is the flow diagram of data transmission method one embodiment of the present invention；
Fig. 4 is the flow diagram of another embodiment of data transmission method of the present invention；
Fig. 5 is the flow diagram of another embodiment of data transmission method of the present invention；
Fig. 6 is the flow diagram of another embodiment of data transmission method of the present invention；
Fig. 7 is the structural schematic diagram of data transmission device one embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another embodiment of data transmission device of the present invention；
Fig. 9 is the structural schematic diagram of another embodiment of data transmission device of the present invention；
Figure 10 is the structural schematic diagram of another embodiment of data transmission device of the present invention；
Figure 11 is the structural schematic diagram of base station one embodiment of the present invention；
Figure 12 is the structural schematic diagram of terminal one embodiment of the present invention.
Specific embodiment
It is a kind of configuration diagram of wireless communication system referring to Fig. 1.In wireless communication system shown in Fig. 1, downlink data transmission can be carried out using data transmission method provided in an embodiment of the present invention.Wherein, the communication system can be the wireless communication system that can carry out data transmission simultaneously using a variety of RAT.
Intersect as shown in Figure 1, existing between the coverage area of the first base station and the coverage area of second base station.Terminal can access first base station and the second base station simultaneously, to receive the downlink data of first base station and the transmission of the second base station simultaneously.Wherein, the first base station may be the same or different with RAT used by second base station.For example, second base station can be the base station 5G when the first base station is LTE base station；Alternatively, second base station is 5G low frequency base station when the first base station is 5G high frequency base station.
It should be noted that the downlink data in the embodiment of the present invention can be the data generated by turbine (Turbo) coding, it is also possible to the data generated using other coding modes coding, the embodiment of the present invention is not specially limited this.The downlink data may include system position and check bit, wherein according to the difference of coding mode, verification The quantity of position can also be different.For example, the check bit may include the first check bit and the second check bit when the downlink data is the data generated by Turbo coding.
The structure of Turbo encoder is as shown in Fig. 2, Turbo encoder encodes interleaver by a Turbo and two constituent encoders carry out parallel cascade convolutional encoding (Parallel Concatenated Convolutional Code, abbreviation PCCC).Wherein, each constituent encoder can be a 8 state sub-encoders.As shown in Fig. 2, the output stream x of Turbo encoderkFor the information of data block in the system position of downlink data, namely input Turbo encoder itself；zkWith z 'kIt is the check bit of downlink data namely the data block by the information after interweaving encoding.To distinguish, two check bit in the downlink data encoded by Turbo are referred to as the first check bit and the second check bit in the embodiment of the present invention.It should be noted that the embodiment of the present invention does not do any restriction to the physical location of the first check bit or the second check bit within the data block, i.e., described first check bit can be zkIt may be z 'k；Correspondingly, when first check bit is zkWhen, second check bit is z 'k；And when first check bit is z 'kWhen, second check bit is zk。
Fig. 3 is participated in, is the flow diagram of data transmission method one embodiment of the present invention.Method described in the present embodiment can be executed by base station, and below with reference to Fig. 3, from first base station angle, invention is further explained.
Step 301, base station receives the channel state information that terminal reports.
Base station receives the channel state information that terminal reports first.Wherein, the channel state information is used to indicate the first down channel quality and another second down channel quality, first down channel quality refers to that the channel quality of down channel between the base station and the terminal, second down channel quality refer to the channel quality of down channel between another base station and the terminal；First down channel quality can when accessing the base station, measurement be obtained by the base station；And second down channel quality then can when accessing another base station, measurement be obtained by the base station.The down channel may include Physical Downlink Shared Channel (Physical Downlink Shared Channel, abbreviation PDSCH) etc..
Wherein, the base station can be the same or different with RAT used by another base station.For example, another base station can be the base station 5G when the base station is LTE base station；Alternatively, another base station can be 5G low frequency base station when the base station is 5G high frequency base station.When the base station is LTE base station, and another base station is the base station 5G, the base station can be macro base station, and another base station can be the micro-base station being arranged in the macro base station coverage area.
Step 302, the base station determines the part to be sent for needing to send in downlink data from the base station to the terminal according to superiority and inferiority relationship between first down channel quality and second down channel quality.
After receiving the channel state information that terminal reports, base station can know that it will be base stations united to terminal transmission downlink data with another base station or more according to channel state information.And it can be according to the first down channel matter Superiority and inferiority relationship between amount and second down channel quality, determines the part to be sent for needing to send in downlink data from the base station to the terminal.Correspondingly, the other parts in the downlink data in addition to the part to be sent can be sent from another base station to the terminal.
When the downlink data includes system position and check bit, the part to be sent can be the system position, or the check bit.Specifically, when the part to be sent is the system position, the other parts are the check bit；When the part to be sent is the check bit, the other parts are then the system position.
Since influence of the quality of reception to downlink data successfully decoded of system position is higher than influence of the quality of reception of check bit to downlink data successfully decoded, therefore when sending downlink data, it can send the system position of downlink data from preferable one of the channel quality of down channel in described two base stations to terminal, and send the check bit of the downlink data from poor one of down channel quality to the terminal.That is, the base station is using the check bit of the downlink data as the part to be sent when first down channel quality is inferior to the second down channel quality；When first down channel quality is better than the second down channel quality, the base station is using the system position of the downlink data as the part to be sent.
Since terminal is when being decoded the downlink data using Turbo coding, the check bit of downlink data includes the first check bit and the second check bit, therefore first check bit and second check bit can be sent by the same base station, can also be sent respectively by two base stations.
Optionally, when first down channel quality is inferior to the second down channel quality, it the base station can be using the first check bit of the downlink data as the part to be sent, alternatively, can also be using the first check bit of the downlink data and the second check bit as the part to be sent.When first down channel quality is better than the second down channel quality, it the base station then can be using the system position of the downlink data as the part to be sent, alternatively, can also be using the system position of the downlink data and the first check bit as the part to be sent.Using this method of determination, it is ensured that system position can be sent to terminal by quality preferably down channel by base station.
Wherein, first down channel quality can indicate (Channel Quality Indicator by the channel quality of the down channel between the base station and the terminal, abbreviation CQI) it indicates, second down channel quality can be indicated by the CQI between another base station and the terminal.If the CQI between the base station and the terminal is greater than the CQI between another base station and the terminal, it may be considered that first down channel quality is better than the second down channel quality；Conversely, it may be considered that the first down channel quality is inferior to the second down channel quality.
For the load of each base station during balance downlink data transmission, it is excessively high to avoid the occurrence of bearing for some base station, the base station and another base station can adjust the part for respectively needing to send in downlink data to terminal according to itself load state or the load state of another base station, dynamic.
Optionally, if the check bit of downlink data includes the first check bit and the second check bit, when first down channel quality is inferior to the second down channel quality, and the load of another base station be higher than first threshold when, the base station is using the first check bit of the downlink data and the second check bit as the part to be sent；When first down channel quality is inferior to the second down channel quality, and the load of another base station is lower than first threshold, the base station is using first check bit as the part to be sent.Wherein, the base station can determine the load of another base station by the load information of acquisition another base station.
Optionally, when first down channel quality is better than the second down channel quality, and the load of the base station is higher than second threshold, the base station is using the system position of the downlink data as the part to be sent；When first down channel quality is better than the second down channel quality, and the load of the base station is lower than second threshold, the base station is using the system position of the downlink data and the first check bit as the part to be sent.Using this method of determination, can guarantee system position can by base station by quality preferably down channel is sent to terminal under the premise of, avoid the preferable base station down data payload of the channel quality of down channel overweight.
Wherein, the first threshold can also be identical with the second threshold, can not also be identical.Under normal conditions, the first threshold can be arranged according to the type of another base station, and the second threshold can be then arranged according to the type of the base station.
It should be noted that, the base station and another base station can be according to superiority and inferiority relationships between first down channel quality and second down channel quality, voluntarily determine the part to be sent for needing to send from itself to the terminal in downlink data, or, the part that should be sent from the base station to terminal in the downlink data can also be determined from one of base station, and then determine the part that should be sent from another base station to the terminal in downlink data, and accordingly send and indicate to another base station.Another base station then can indicate to determine the part for itself needing to send to terminal in downlink data according to described.Such as, when the base station is LTE base station and another base station is the base station 5G, the base station also can indicate that the base station 5G sends other parts of the downlink data in addition to the part to be sent to the terminal after determining the part to be sent for needing to send from the base station lTE to the terminal according to the superiority and inferiority relationship.
Step 303, the base station sends the part to be sent to the terminal.
Base station can carry out coding to data to be sent and generate downlink data after receiving channel state information.When the base station and another base station are in CRAN (Cloud Radio Access Network), the downlink data can carry out coding generation to data to be sent by cloud computing platform is unified, can reduce the energy consumption of base station,.
Specifically, the base station and another base station can obtain the downlink data from the cloud computing platform after receiving the channel state information that terminal reports, to make base station that need not generate the lower line number by respective absolute coding again According to.When obtaining downlink data from cloud computing platform, the available whole downlink datas in base station can also only obtain the data for needing to send from base station to terminal；Likewise, when obtaining downlink data from cloud computing platform, the available whole downlink datas in another base station can also only obtain the data for needing to send from another base station to terminal.
After getting the downlink data, the base station can send the part to be sent to the terminal.Details are not described herein again for specific sending method.
Using the present embodiment, downlink data can be sent by two different base stations by two different down channels respectively, so as to avoid base station during transmission system position and check bit while the case where encountering down channel depth attenuation, the robustness of improve data transfer process.Moreover, the down load of each base station can also be kept more balanced under the premise of guaranteeing downlink data transmission robustness by two base stations united transmission downlink datas.
It referring to fig. 4, is the flow diagram of data transmission method one embodiment of the present invention.The embodiment of the present invention is described further from terminal point below with reference to Fig. 4.
Step 401, terminal distinguishes reporting status information of channel to first base station and the second base station, and the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal.
Under the scene of base stations united scheduling, terminal may access multiple base stations simultaneously, therefore terminal can measure the down channel quality to the terminal for each base station that it is accessed, and measurement result is sent respectively to by its each base station accessed by channel state indication channel, so that each base station for accessing it can know other base stations that itself and terminal are accessed to the down channel quality of the terminal.
Due in actual use, downlink data transmission robustness can guaranteed by sending downlink data to terminal using two base stations simultaneously, for convenient for the load between balanced each base station, network side can select the base station of two light loads to send the base station of downlink data for the terminal according to the load state of each base station.For the robustness for guaranteeing downlink data transmission, the base station of described two light loads can be different types of base station.For example, one is LTE base station, one is the base station 5G.
Network side will send downlink data by which two base station to terminal instruction after selecting more two base stations, through high-level signaling for terminal, so that the terminal be allow to determine first base station and the second base station for downlink data transmission according to high-level signaling.Terminal is determining first base station and the second base station according to high-level signaling and then sends channel state information to first base station and the second base station respectively.
For example, terminal may be in the coverage area of multiple LTE base stations and multiple base stations 5G simultaneously under LTE base station and the scene of the base stations united scheduling of 5G.Network side can select a LTE according to the load state of each base station Base station and a base station 5G send downlink data to terminal.The channel quality of the channel quality of the base station 5G PDSCH and the PDSCH of LTE base station can be informed the base station 5G and the LTE base station respectively by terminal.
Step 402, the terminal receives the downlink data of the first base station Yu the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content that the first part and the second part are respectively included is determined by superiority and inferiority relationship between first down channel quality and second down channel quality.
To after two base station reporting status information of channel, terminal can receive the downlink data of two base stations united transmissions.From previous embodiment as can be seen that different according to the superiority and inferiority relationship between the first channel quality and second channel quality, first base station and the second base stations united concrete mode for sending downlink data to terminal be not also identical.
Optionally, when first down channel quality is better than second down channel quality, the first part may include the system position of the downlink data, and the second part then may include the downlink data check bit；When first down channel quality is inferior to second down channel quality, the first part include can the downlink data check bit, the second part then may include the system position of the downlink data.Wherein, when the downlink data is the data generated using Turbo coding mode, the check bit may include the first check bit and the second check bit.
Optionally, if the downlink data is the data generated using Turbo coding mode, when first down channel quality is better than second down channel quality, the first part also includes system position and the first check bit of the downlink data, and the second part only includes the second check bit of the downlink data；When first down channel quality is inferior to second down channel quality, the first part only includes the first check bit of the downlink data, and the second part then includes system position and the second check bit of the downlink data.
The concrete mode that terminal receives downlink data is corresponding to the terminal transmission mode of downlink data with base station, and related place is referring to previous embodiment, and details are not described herein again.
After receiving the downlink data of first base station and the second base stations united transmission, the data received from two base stations can be merged, it is hereby achieved that complete downlink data, after getting complete downlink data, terminal is unified to be decoded the downlink data received again.Such as, when terminal receives from first base station the system position of downlink data, after the first check bit and the second check bit that receive downlink data from the second base station, it can be by the system position, first check bit and second check bit, which merge, becomes complete downlink data, then the downlink data is decoded again, data needed for obtaining terminal.
Using the present embodiment, downlink data can be sent by two different base stations respectively, can be to avoid downlink data All parts are all sent by same base station, so that the poor base station of channel quality also assists in the transmission of downlink data, the Base Station Compatibility so as to avoid channel quality poor is wasted, and the load of balanced each base station.And use the present embodiment, the case where can also avoiding during transmission system position and check bit while encounter channel depth attenuation, the robustness of improve data transfer process.
In order to make full use of the radio resource and power system capacity of base station under the premise of guaranteeing downlink data transmission robustness, other than using two or more base stations united and sending downlink data to terminal, it can also be combined by the different data transfer resource of the same base station to same terminal and send downlink data.
It is the flow diagram of another embodiment of data transmission method of the present invention referring to Fig. 5.The embodiment can be executed by base station.
Step 501, base station receives the channel state information that terminal reports.
Base station receives the channel state information that terminal reports first, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein at least two down channel carries out downlink data transmission using different data transmission resources.Wherein, each described data transmission resources, which is one, can be independently used the radio resource that data are transmitted between base station and terminal.
For example, each described data transmission resources can be an antenna port of base station, or the sub- bandwidth etc. come is marked off from the system bandwidth of base station.When the data transmission resources are that subband is wide, each described down channel uses the different wide carry out downlink data transmissions of subband；When the data transmission resources are antenna port, each described down channel carries out downlink data transmission using different antenna ports.
Step 502, the base station, which is combined by least two down channel to the terminal, sends downlink data；Wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
Since the channel quality of at least two data transmission resources is different, base station can be according to the behaviour in service of each data transmission resources, and therefrom selecting two or more data transmission resources is that base station sends downlink data.Wherein, channel quality preferable one is used at least send the system position of the downlink data, a part of check bit of channel quality is poor at least two data transmission resources one at least sending the downlink data at least two data transmission resources.
Optionally, the base station sends the system position of the downlink data by the first down channel at least two down channel to the terminal；The base station sends the downlink data check bit to the terminal by the second down channel at least two down channel；Wherein, the channel quality of first down channel is better than described second The channel quality of down channel.
Optionally, the base station sends system position and the first check bit of the downlink data by the first down channel at least two down channel to the terminal；The base station sends the second check bit of the downlink data by the second down channel at least two down channel to the terminal；Wherein, the channel quality of first down channel is better than the channel quality of second down channel.
It should be noted that similar with previous embodiment, the downlink data can also be generated by base coded, or be obtained by base station from cloud computing platform, and concrete mode may refer to aforementioned, and details are not described herein again.
Using the technical solution of the present embodiment, radio resource can be made full use of while guaranteeing data transmission robustness.
It is the flow diagram of another embodiment of data transmission method of the present invention referring to Fig. 6.The embodiment can be executed by terminal.
Step 601, terminal is to base station reporting status information of channel, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein at least two down channel carries out downlink data transmission using different data transmission resources.
Terminal can detecte the channel quality of each data transmission resources after access base station, and the channel quality of at least two data transmission resources is then reported to base station.
In actual use, terminal can measure and report to base station the channel quality of each data transmission resources, and the channel quality of partial data transfer resource can also be only reported to base station；When terminal only reports the channel quality of partial data transfer resource to UE, report the channel quality of which data transmission resources that can be indicated by high-level signaling；Or it can also voluntarily be selected by terminal.
Step 602, the terminal receives the downlink data that the base station is sent by least two down channel joint, wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
The mode for sending downlink data according to base station is different, and the mode that terminal receives downlink data is not also identical.Optionally, terminal can receive the system position of the downlink data by a down channel, and the first check bit and the second check bit of the downlink data are received by another down channel.Optionally, terminal can also receive system position and the first check bit of the downlink data by a down channel, and the second check bit of the downlink data is received by another down channel.
It base station can be in the system position, the first check bit and the second check bit that receive the downlink data and then right The downlink data is parsed.
Using the embodiment of the present invention, downlink data is sent by base station by two different down channels, to avoid the case where down channel encounters deep fades simultaneously during system position and check bit are sent, the robustness of improve data transfer.
Fig. 7 is a kind of structural schematic diagram of data transmission device provided in an embodiment of the present invention.The device can be set on base station, be also possible to base station itself, which can be used for executing data transmission method as shown in Figure 3.
As shown in Figure 7, the apparatus may include: receiving unit 701, the channel state information reported for receiving terminal, the channel state information are used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；Determination unit 702, for determining the part to be sent for needing to send in downlink data from the base station to the terminal according to superiority and inferiority relationship between first down channel quality and second down channel quality；Transmission unit 703, for sending the part to be sent to the terminal.
Optionally, the determination unit 702 is specifically used for, when first down channel quality is inferior to the second down channel quality, using the downlink data check bit as the part to be sent.
Optionally, the determination unit 702 is specifically used for, when first down channel quality is inferior to the second down channel quality, and the load of another base station be higher than first threshold when, using the check bit of the downlink data as the part to be sent.
Optionally, the determination unit 702 is specifically used for, when first down channel quality is inferior to the second down channel quality, using the first check bit of the downlink data as the part to be sent, wherein, the check bit of the downlink data includes first check bit and the second check bit.
Optionally, the determination unit 702 is specifically used for, when first down channel quality is inferior to the second down channel quality, and the load of another base station be lower than first threshold when, using the first check bit of the downlink data as the part to be sent, wherein, the check bit of the downlink data includes first check bit and the second check bit.
Optionally, the determination unit 702 is specifically used for, when the first down channel quality is better than the second down channel quality, using the system position of the downlink data as the part to be sent.
Optionally, the determination unit 702 is specifically used for, when first down channel quality is better than the second down channel quality, and the load of the base station is lower than second threshold, using the system position of the downlink data as the part to be sent.
Optionally, the determination unit 702 is specifically used for, when first down channel quality is believed better than the second downlink When road quality, using the system position of the downlink data and the first check bit as the part to be sent, wherein the downlink data includes the first check bit and the second check bit.
Wherein, the determination unit 702 is specifically used for, when load of first down channel quality better than the second down channel quality and the base station is lower than second threshold, using the system position of the downlink data and the first check bit as the part to be sent, wherein, the downlink data includes the first check bit and the second check bit.
Fig. 8 is the structural schematic diagram of another data transmission device provided in an embodiment of the present invention.The embodiment can be set at the terminal, be also possible to terminal itself, which can be used for executing data transmission method as shown in Figure 4.
As shown in Figure 8, the apparatus may include: reporting unit 801, for distinguishing reporting status information of channel to first base station and the second base station, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；Receiving unit 802, for receiving the downlink data of the first base station Yu the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content that the first part and the second part are respectively included is determined by superiority and inferiority relationship between first down channel quality and second down channel quality.
Wherein, when first down channel quality is better than second down channel quality, the first part includes system position and the first check bit of the downlink data, and the second part includes the second check bit of the downlink data；When first down channel quality is inferior to second down channel quality, the first part includes the first check bit of the downlink data, and the second part includes the first check bit and the second check bit of the downlink data；When first down channel quality is better than second down channel quality, the first part includes downlink data system position and the first check bit, and the second part includes the second check bit of the downlink data；When first down channel quality is inferior to second down channel quality, the first part includes the first check bit of the downlink data, and the second part includes the first check bit and the second check bit of the downlink data.
Described device can also comprise determining that unit, for determining the first base station and second base station according to high-level signaling.
The specific descriptions of the function of each unit about the device are referred to the related content of other embodiments of the invention, and this will not be repeated here.
It is the structural schematic diagram of another embodiment of data transmission device of the present invention referring to Fig. 9.The embodiment can be set on base station, be also possible to base station itself, for executing data transmission method as shown in Figure 5.
As shown in figure 9, the apparatus may include: receiving unit 901, the channel status reported for receiving terminal Information, the channel state information are used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein at least two down channel carries out downlink data transmission using different data transmission resources；Transmission unit 902 sends downlink data for combining by least two down channel to the terminal；Wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
Optionally, transmitted unit 902, specifically for the system position of the downlink data is sent to the terminal by the first down channel at least two down channel, and the downlink data check bit is sent to the terminal by the second down channel at least two down channel, wherein, the channel quality of first down channel is better than the channel quality of second down channel.
Optionally, transmitted unit 902, specifically for system position and the first check bit of the downlink data are sent to the terminal by the first down channel at least two down channel, and the second check bit of the downlink data is sent to the terminal by the second down channel at least two down channel, wherein, the channel quality of first down channel is better than the channel quality of second down channel.
Wherein, the data transmission resources can be the antenna port of the base station or the subband of the base station system bandwidth.
It is the structural schematic diagram of another embodiment of data transmission device of the present invention referring to Figure 10.The embodiment can be set at the terminal, be also possible to terminal itself, for executing data transmission method as shown in FIG. 6.
As shown in Figure 10, the apparatus may include: transmission unit 1001, for to base station reporting status information of channel, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；Receiving unit 1002, the downlink data sent for receiving the base station by least two down channel joint, wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
Corresponding with aforementioned data transmission method and data transmission device, the embodiment of the invention also provides base station and terminals.
It is a structural schematic diagram of base station of the present invention referring to Figure 11.Functionally, the base station can be macro base station and be also possible to micro-base station, say from the RAT that base station uses, the base station can be also possible to the base station 5G with LTE base station.
As shown in figure 11, the base station may include: processor 1101, memory 1102 and communication module 1103 Equal components.These components are attached and are communicated with busbar network or hub-and-spoke configuration etc. by one or more bus and communicated.
Wherein, processor 1101 is the control centre of terminal, utilize the various pieces of various interfaces and the entire terminal of connection, by running or executing the software program and/or module that are stored in memory 1102, and the data being stored in memory 1102 are called, to execute the various functions and/or processing data of terminal.The processor 1101 can be made of integrated circuit (Integrated Circuit, abbreviation IC), such as the IC that can be encapsulated by single is formed, and can also be made of the encapsulation IC of more identical functions of connection or different function.For example, processor 1101 can only include central processing unit (Central Processing Unit, abbreviation CPU), it is also possible to the combination of control chip (such as baseband chip) of the CPU with digital signal processor (Digital Signal Processor, abbreviation DSP), in communication module 1103.In embodiments of the present invention, CPU can be single operation core, also may include multioperation core.
The memory 1102 can be used for storing software program and module, and processor 1101 is stored in the software program and module of memory 1102 by operation, thereby executing the various function application and realization data processing of terminal.In the specific embodiment of the invention, memory 1102 may include volatile memory, such as non-volatile dynamic random access memory (Nonvolatile Random Access Memory, abbreviation NVRAM), phase change random access memory (Phase Change RAM, abbreviation PRAM), magnetic-resistance random access memory (Magetoresistive RAM, abbreviation MRAM) etc., it can also include nonvolatile memory, a for example, at least disk memory, Electrical Erasable programmable read only memory (Electrically Erasable Programmable Read-Only Memory, abbreviation E EPROM), flush memory device, such as anti-or flash memory (NOR flash memory) or anti-and flash memory (NAND flash memory).
The communication module 1103 communicates base station with other equipment such as terminals by the communication channel for establishing communication channel.The communication module 1103 may include the communication modules such as base band (Base Band) module and the corresponding radio frequency of the communication module (Radio Frequency, abbreviation RF) circuit.In different embodiments of the invention, various communication modules in the communication module 1103 generally occur in the form of IC chip (Integrated Circuit Chip), and the property of can be chosen combines, without including all communication modules and corresponding antenna sets.For example, the communication module 1103 can only include baseband chip, radio frequency chip and corresponding antenna to provide communication function in a cellular communication system.The wireless communication connection established via the communication module 1103, such as WLAN access or WCDMA access, the terminal can connect to Cellular Networks (Cellular Network) or internet (Internet).In some optional embodiments of the invention, communication module in the communication module 1103, such as baseband module are desirably integrated into processor 1101, the typical APQ+MDM series platform provided such as high pass (Qualcomm) company.
It is corresponding with data transmission method shown in Fig. 3, in a kind of optional embodiment, the communication module 1103, the channel state information reported for receiving terminal, the channel state information are used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；The processor 1101, for determining the part to be sent for needing to send in downlink data from the base station to the terminal according to superiority and inferiority relationship between first down channel quality and second down channel quality；The communication module 1103 is also used to send the part to be sent to the terminal.
Optionally, the processor 1101 specifically can be used for when first down channel quality is inferior to the second down channel quality, using the first check bit of the downlink data as the part to be sent.Specifically, when first down channel quality is inferior to the second down channel quality, the processor 1101 determines the load of another base station；And when the load of another base station is lower than first threshold, using the first check bit of the downlink data as the part to be sent.
Optionally, the processor 1101 specifically can be used for when first down channel quality is inferior to the second down channel quality, using the first check bit of the downlink data and the second check bit as the part to be sent.Specifically, when first down channel quality is inferior to the second down channel quality, the processor 1101 can determine the load of another base station；And when the load of another base station is higher than first threshold, using the first check bit of the downlink data and the second check bit as the part to be sent.
Optionally, the processor 1101 specifically can be used for when first down channel quality is better than the second down channel quality, using the system position of the downlink data as the part to be sent.Specifically, when first down channel quality is better than the second down channel quality, the processor 1101 can determine the load of the base station；And when the load of the base station is lower than second threshold, using the system position of the downlink data as the part to be sent.
Optionally, the processor 1101 specifically can be used for when stating the first down channel quality better than the second down channel quality, using the system position of the downlink data and the first check bit as the part to be sent.Specifically, when first down channel quality is better than the second down channel quality, the processor 1101 can determine the load of the base station；And when the load of the base station is lower than second threshold, using the system position of the downlink data and the first check bit as the part to be sent.
It is corresponding with data transmission method shown in fig. 5, in another optional embodiment, the communication module 1103, the channel state information reported for receiving terminal, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；And is combined by least two down channel to the terminal and sent Downlink data；Wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.And the superiority and inferiority relationship between the channel quality of at least two down channel is determined by the processor 1101.
Optionally, when the channel quality of first down channel is better than the channel quality of second down channel, the communication module 1103 specifically can be used for sending the system position of the downlink data to the terminal by the first down channel at least two down channel；And the downlink data check bit is sent to the terminal by the second down channel at least two down channel.
Optionally, when the channel quality of first down channel is better than the channel quality of second down channel, the communication module 1103 specifically can be used for sending system position and the first check bit of the downlink data to the terminal by the first down channel at least two down channel；And the second check bit of the downlink data is sent to the terminal by the second down channel at least two down channel.
It is a structural schematic diagram of terminal of the present invention referring to Figure 12.In embodiments of the present invention, the terminal may include all kinds of terminal devices or user equipment, such as mobile phone, tablet computer, personal digital assistant (Personal Digital Assistant, abbreviation PDA), point-of-sale terminal (Point of Sales, abbreviation POS), vehicle-mounted computer etc..
As shown in figure 12, the terminal also may include the components such as processor 1201, memory 1202 and communication module 1203.In addition to this, the terminal can also include that components, these components such as output module 1204, input module 1205 and sensor 1206 can also be attached and be communicated with busbar network or hub-and-spoke configuration etc. by one or more bus.
Processor 1201 is the control centre of terminal, utilize the various pieces of various interfaces and the entire terminal of connection, by running or executing the software program and/or module that are stored in memory 1202, and the data being stored in memory 1202 are called, to execute the various functions and/or processing data of terminal.The processor 1201 can be made of integrated circuit (Integrated Circuit, abbreviation IC), such as the IC that can be encapsulated by single is formed, and can also be made of the encapsulation IC of more identical functions of connection or different function.For example, processor 1201 can only include central processing unit (Central Processing Unit, abbreviation CPU), it is also possible to the combination of GPU, digital signal processor (Digital Signal Processor, abbreviation DSP) and the control chip (such as baseband chip) in communication module 1203.In embodiments of the present invention, CPU can be single operation core, also may include multioperation core.
The communication module 1203 makes terminal by the communication channel to be connected to remote server for establishing communication channel, feasible remote server transmission data or from media data under the remote server.The communication module 1203 may include WLAN (Wireless Local Area Network, abbreviation wireless LAN) module, The communication modules such as bluetooth module, base band (Base Band) module, and corresponding radio frequency (the Radio Frequency of the communication module, abbreviation RF) circuit, for carrying out WLAN communication, Bluetooth communication, infrared communication and/or cellular communications system communication, such as wideband code division multiple accesses (Wideband Code Division Multiple Access, abbreviation W-CDMA) and/or high-speed downstream packet access (High Speed Downlink Packet Access, abbreviation HSDPA).Communication of the communication module for each component in controlling terminal, and can support direct memory access (Direct Memory Access).
In different embodiments of the invention, various communication modules in the communication module 1203 generally occur in the form of IC chip (Integrated Circuit Chip), and the property of can be chosen combines, without including all communication modules and corresponding antenna sets.For example, the communication module 1203 can only include baseband chip, radio frequency chip and corresponding antenna to provide communication function in a cellular communication system.The wireless communication connection established via the communication module 1203, such as WLAN access or WCDMA access, the terminal can connect to Cellular Networks (Cellular Network) or internet (Internet).In some optional embodiments of the invention, communication module in the communication module 1203, such as baseband module are desirably integrated into processor 1201, the typical APQ+MDM series platform provided such as high pass (Qualcomm) company.Radio circuit is for sending and receiving signal in information transmit-receive or communication process.For example, being handled after the downlink information of base station is received to processor 1201；In addition, the data for designing uplink are sent to base station.Usually, the radio circuit includes the known circuits for executing these functions, including but not limited to antenna system, radio frequency transceiver, one or more amplifiers, tuner, one or more oscillators, digital signal processor 1201, encoding and decoding (Codec) chipset, subscriber identity module (SIM) card, memory 1202 etc..In addition, radio circuit can also be communicated with network and other equipment by wireless communication.Any communication standard or agreement can be used in the wireless communication, including but not limited to GSM (Global System of Mobile communication, global system for mobile communications), GPRS (General Packet Radio Service, general packet radio service), CDMA (Code Division Multiple Access, CDMA), WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access), high speed uplink downlink packet access technology (High Speed Uplink Packet A Ccess, HSUPA), LTE (Long Term Evolution, long term evolution), Email, SMS (Short Messaging Service, short message service) etc..
Memory 1202 can be used for storing software program and module, and processor 1201 is stored in the software program and module of memory 1202 by operation, thereby executing the various function application and realization data processing of terminal.Memory 1202 mainly includes program storage area and data storage area, wherein program storage area can application program, such as sound playing program, image playing program needed for storage program area, at least one function etc.；Data storage area, which can be stored, uses created data (such as audio data, phone directory etc.) etc. according to terminal.In the specific embodiment of the invention, memory 1202 may include volatile memory, such as non-volatile dynamic random access memory (Nonvolatile Random Access Memory, abbreviation NVRAM), phase change random access memory (Phase Change RAM, abbreviation PRAM), magnetic-resistance random access memory (Magetoresistive RAM, abbreviation MRAM) etc., it can also include nonvolatile memory, a for example, at least disk memory, Electrical Erasable programmable read only memory (Electrically Erasable Programmable Read-Only Memory, abbreviation EEPROM), flush memory device, such as anti-or flash memory (NOR flash memory) or anti-and flash memory (N AND flash memory).Nonvolatile storage stores operating system and application program performed by processor 1201.The processor 1201 is stored in mass storage from the nonvolatile storage load operating program and data to memory and by digital content.The operating system includes such as memory management, storage equipment control, power management etc. for controlling and manage general system tasks, and facilitates the various assemblies communicated between various software and hardwares and/or driver.In embodiments of the present invention, the operating system can be the android system of Google company, Windows operating system etc. of the iOS system of Apple company exploitation or Microsoft Corporation exploitation or this kind of embedded OS of Vxworks.
The input module 1205 may include the devices such as touch screen, microphone, input the generations such as operation signal input related with the function control of terminal for receiving user.The output module 1204 then may include voicefrequency circuit display panel, voicefrequency circuit, loudspeaker etc., for exporting the information of the forms such as video or audio.The sensor 1206 then may include optical sensor, motion sensor and infrared sensor etc..
It is corresponding with data transmission method shown in Fig. 4, in a kind of optional embodiment, the communication module 1203, for distinguishing reporting status information of channel to first base station and the second base station, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；And receive the downlink data of the first base station and the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content that the first part and the second part are respectively included is determined by superiority and inferiority relationship between first down channel quality and second down channel quality.The processor 1201 is then for being decoded the downlink data.
Wherein, when first down channel quality is better than second down channel quality, the first part includes system position and the first check bit of the downlink data, and the second part includes the second check bit of the downlink data；When first down channel quality is inferior to second down channel quality, the first part includes the first check bit of the downlink data, and the second part includes the first check bit and the second check bit of the downlink data；When first down channel quality is better than second down channel quality, the first part includes downlink data system position and the first check bit, and the second part includes the second check bit of the downlink data；When first down channel quality is inferior to second down channel quality, the first part includes the downlink data The first check bit, the second part includes the first check bit and the second check bit of the downlink data.
It is corresponding with data transmission method shown in fig. 5, in another optional embodiment, the communication module 1203, for to base station reporting status information of channel, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；And receive the downlink data that the base station is sent by least two down channel joint, wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
It is the configuration diagram of communication system of the present invention referring to Fig. 1.
As shown in Figure 1, the communication system may include first base station and the second base station that there is coincidence in overlay area.
Wherein, first base station can be macro base station, and the second base station can be the micro-base station under the macro base station.
It is appreciated that the communication system also may include more other base stations, such as have multiple micro-base stations in a macro base station coverage area in addition to first base station and the second base station.
In one possible implementation, terminal is used for after accessing the first base station and second base station, it can be simultaneously to first base station and the second base station reporting status information of channel, wherein, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and the second base station and the terminal of down channel between first base station and the terminal.
First base station and the second base station can receiving terminal reports respectively channel state information, and combined according to the channel state information to the terminal and send downlink data.
After receiving the channel state information, first base station can determine the part to be sent for needing to be sent in downlink data by first base station according to the superiority and inferiority relationship of first down channel quality and second down channel quality；Second base station respectively can also determine the part to be sent for needing to be sent in downlink data by the second base station according to the superiority and inferiority relationship of first down channel quality and second down channel quality.It needs the part to be sent sent by first base station and needs to be combined by the part to be sent that the second base station is sent as complete downlink data.It should be noted that can be by repeating or without repetition between the part to be sent for needing the part to be sent sent by first base station and needs to be sent by the second base station.
When first down channel quality is inferior to the second down channel quality, the first base station can be using the first check bit of the downlink data as the part to be sent for needing be sent by first base station；Correspondingly, the part to be sent that second base station can then be sent the system position of the downlink data and the second check bit as needs by the second base station.
When first down channel quality is inferior to the second down channel quality, the first base station can be using the first check bit of the downlink data and the second check bit as the part to be sent for needing be sent by first base station；Correspondingly, the part to be sent that second base station can then be sent the system position of the downlink data as needs by the second base station.
When first down channel quality is better than the second down channel quality, the first base station can be using the system position of the downlink data as the part to be sent for needing be sent by first base station；Correspondingly, the part to be sent that second base station can then be sent the first check bit of the downlink data as needs by the second base station.
When first down channel quality is better than the second down channel quality, the first base station can be using the system position of the downlink data as the part to be sent for needing be sent by first base station；Correspondingly, the part to be sent that second base station can then be sent the first check bit of the downlink data and the second check bit as needs by the second base station.
Terminal is decoded the downlink data with the system position, first check bit and second check bit after receiving the first base station and the second base stations united downlink data issued, thus the data needed for obtaining.
First base station and the second base stations united concrete mode for sending downlink data to terminal may refer to previous embodiment, and details are not described herein again.
In the specific implementation, the embodiment of the invention also provides a kind of computer storage mediums, wherein the computer storage medium can be stored with program, which may include step some or all of in each embodiment of data transmission method provided by the invention when executing.The storage medium can be magnetic disk, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
Those skilled in the art can be understood that the technology in the embodiment of the present invention can be realized by means of software and necessary general hardware platform.Based on this understanding, substantially the part that contributes to existing technology can be embodied in the form of software products technical solution in the embodiment of the present invention in other words, the computer software product can store in storage medium, such as ROM/RAM, magnetic disk, CD, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) execute method described in certain parts of each embodiment of the present invention or embodiment.
All the embodiments in this specification are described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, such as the description of above-mentioned apparatus or equipment is referred to corresponding embodiment of the method.The embodiments of the present invention described above are not intended to limit the scope of the present invention.

Claims (36)

  1. A kind of data transmission method characterized by comprising
    Base station receives the channel state information that terminal reports, and the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；
    The base station determines the part to be sent in downlink data according to the superiority and inferiority relationship of first down channel quality and second down channel quality；
    The base station sends the part to be sent to the terminal.
  2. The method as described in claim 1, which is characterized in that the base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When first down channel quality is inferior to the second down channel quality, the base station is using the check bit of the downlink data as the part to be sent.
  3. The method as described in claim 1, which is characterized in that the base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When first down channel quality is inferior to the second down channel quality, and the load of another base station is higher than first threshold, the base station is using the check bit of the downlink data as the part to be sent.
  4. The method as described in claim 1, which is characterized in that the check bit of the downlink data includes the first check bit and the second check bit；
    The base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When first down channel quality is inferior to the second down channel quality, the base station is using first check bit as the part to be sent.
  5. The method as described in claim 1, which is characterized in that the check bit of the downlink data includes the first check bit and the second check bit；
    It is closed according to superiority and inferiority between first down channel quality and second down channel quality base station It is to determine in downlink data to need the part to be sent sent from the base station to the terminal to include:
    When first down channel quality is inferior to the second down channel quality, and the load of another base station be lower than first threshold when, the base station is using the first check bit of the downlink data as the part to be sent.
  6. The method as described in claim 1, which is characterized in that the base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When first down channel quality is better than the second down channel quality, the base station is using the system position of the downlink data as the part to be sent.
  7. The method as described in claim 1, which is characterized in that the base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When first down channel quality is better than the second down channel quality, and the load of the base station is higher than second threshold, the base station is using the system position of the downlink data as the part to be sent.
  8. Method according to claim 6 or 7, which is characterized in that the check bit of the downlink data includes the first check bit and the second check bit；
    The base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When first down channel quality is better than the second down channel quality, the base station is using the system position of the downlink data and first check bit as the part to be sent.
  9. Method according to claim 6 or 7, which is characterized in that the check bit of the downlink data includes the first check bit and the second check bit；
    The base station is determined according to superiority and inferiority relationship between first down channel quality and second down channel quality needs the part to be sent sent from the base station to the terminal to include: in downlink data
    When load of first down channel quality better than the second down channel quality and the base station is lower than second threshold, the base station is using the system position of the downlink data and the first check bit as the part to be sent.
  10. A kind of data transmission method characterized by comprising
    Terminal distinguishes reporting status information of channel to first base station and the second base station, and the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and second base station and the terminal of down channel between the first base station and the terminal；
    The terminal receives the downlink data of the first base station Yu the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content of the first part and the second part is determined by the superiority and inferiority relationship of first down channel quality and second down channel quality.
  11. Method as claimed in claim 10, which is characterized in that
    When first down channel quality is better than second down channel quality, the first part includes the system position of the downlink data, and the second part includes the check bit of the downlink data.
  12. Method as claimed in claim 10, which is characterized in that
    When first down channel quality is better than second down channel quality, the first part includes system position and the first check bit of the downlink data, and the second part includes the second check bit of the downlink data.
  13. Method as claimed in claim 10, which is characterized in that
    When first down channel quality is inferior to second down channel quality, the first part includes the check bit of the downlink data, and the second part includes the system position of the downlink data.
  14. Method as claimed in claim 10, which is characterized in that
    When first down channel quality is inferior to second down channel quality, the first part includes first check bit of downlink data, and the second part includes system position and the second check bit of the downlink data.
  15. A kind of data transmission device, characterized by comprising:
    Receiving unit, the channel state information reported for receiving terminal, the channel state information are used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；
    Determination unit, for determining the part to be sent for needing to send in downlink data from the base station to the terminal according to superiority and inferiority relationship between first down channel quality and second down channel quality；
    Transmission unit, for sending the part to be sent to the terminal.
  16. Device as claimed in claim 15, which is characterized in that
    The determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, using the downlink data check bit as the part to be sent.
  17. Device as claimed in claim 15, which is characterized in that
    The determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, and the load of another base station be higher than first threshold when, using the check bit of the downlink data as the part to be sent.
  18. Device as claimed in claim 15, which is characterized in that
    The determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, using the first check bit of the downlink data as the part to be sent, wherein the check bit of the downlink data includes first check bit and the second check bit.
  19. Device as claimed in claim 15, which is characterized in that
    The determination unit is specifically used for, when first down channel quality is inferior to the second down channel quality, and the load of another base station be lower than first threshold when, using the first check bit of the downlink data as the part to be sent, wherein, the check bit of the downlink data includes first check bit and the second check bit.
  20. Device as claimed in claim 15, which is characterized in that
    The determination unit is specifically used for, when the first down channel quality is better than the second down channel quality, using the system position of the downlink data as the part to be sent.
  21. Device as claimed in claim 20, which is characterized in that
    The determination unit is specifically used for, when first down channel quality is better than the second down channel quality, and the load of the base station is lower than second threshold, using the system position of the downlink data as the part to be sent.
  22. Device as described in claim 20 or 21, which is characterized in that
    The determination unit is specifically used for, when first down channel quality is better than the second down channel quality, using the system position of the downlink data and the first check bit as the part to be sent, wherein the downlink data includes the first check bit and the second check bit.
  23. Device as described in claim 20 or 21, which is characterized in that
    The determination unit is specifically used for, when load of first down channel quality better than the second down channel quality and the base station is lower than second threshold, using the system position of the downlink data and the first check bit as the part to be sent, wherein, the downlink data includes the first check bit and the second check bit.
  24. A kind of data transmission device characterized by comprising
    Reporting unit, for distinguishing reporting status information of channel to first base station and the second base station, the channel state information is used to indicate the second down channel quality of down channel between the first down channel quality and another base station and the terminal of down channel between the base station and the terminal；
    Receiving unit, for receiving the downlink data of the first base station Yu the described second base stations united transmission, wherein, the first part of the downlink data is sent by the first base station, the second part of the downlink data is sent by second base station, and the content that the first part and the second part are respectively included is determined by superiority and inferiority relationship between first down channel quality and second down channel quality.
  25. Device as claimed in claim 24, which is characterized in that
    When first down channel quality is better than second down channel quality, the first part includes the system position of the downlink data, and the second part includes the check bit of the downlink data.
  26. Device as claimed in claim 24, which is characterized in that
    When first down channel quality is better than second down channel quality, the first part includes system position and the first check bit of the downlink data, and the second part includes the second check bit of the downlink data.
  27. Device as claimed in claim 24, which is characterized in that
    When first down channel quality is inferior to second down channel quality, the first part includes the check bit of the downlink data, and the second part includes the system position of the downlink data.
  28. Device as claimed in claim 24, which is characterized in that
    When first down channel quality is inferior to second down channel quality, the first part includes first check bit of downlink data, and the second part includes system position and the second check bit of the downlink data.
  29. A kind of data transmission method characterized by comprising
    Base station receives the channel state information that terminal reports, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein, at least two down channel carries out downlink data transmission using different data transmission resources；
    The base station, which is combined by least two down channel to the terminal, sends downlink data；The channel quality for being wherein better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
  30. Method as claimed in claim 29, which is characterized in that the base station, which is combined by least two down channel to terminal transmission downlink data, includes:
    The base station sends the system position of the downlink data by the first down channel at least two down channel to the terminal；
    The base station sends the check bit of the downlink data by the second down channel at least two down channel to the terminal；Wherein, the channel quality of first down channel is better than the channel quality of second down channel.
  31. Method as claimed in claim 29, which is characterized in that the base station, which is combined by least two down channel to terminal transmission downlink data, includes:
    The base station sends system position and the first check bit of the downlink data by the first down channel at least two down channel to the terminal；
    The base station sends the second check bit of the downlink data by the second down channel at least two down channel to the terminal；Wherein, the channel quality of first down channel is better than the channel quality of second down channel.
  32. Such as the described in any item methods of claim 29 to 31, which is characterized in that
    The data transmission resources are wide for the antenna port of the base station or the subband of the base station system bandwidth.
  33. A kind of data transmission device characterized by comprising
    Receiving unit, the channel state information reported for receiving terminal, the channel state information is used to indicate the channel quality of at least two down channels between the base station and the terminal, wherein at least two down channel carries out downlink data transmission using different data transmission resources；
    Transmission unit sends downlink data for combining by least two down channel to the terminal；Wherein, the channel quality for being better than the down channel for the transmission downlink data check bit being only used for for sending the channel quality of the down channel of downlink data system position.
  34. Device as claimed in claim 33, which is characterized in that
    Transmitted unit, specifically for the system position of the downlink data is sent to the terminal by the first down channel at least two down channel, and the downlink data check bit is sent to the terminal by the second down channel at least two down channel, wherein, the channel quality of first down channel is better than the channel quality of second down channel.
  35. Device as claimed in claim 33, which is characterized in that
    Transmitted unit, specifically for system position and the first check bit of the downlink data are sent to the terminal by the first down channel at least two down channel, and the second check bit of the downlink data is sent to the terminal by the second down channel at least two down channel, wherein, the channel quality of first down channel is better than the channel quality of second down channel.
  36. Such as the described in any item devices of claim 33 to 35, which is characterized in that
    The data transmission resources are the antenna port of the base station or the subband of the base station system bandwidth.
CN201580085303.0A 2015-12-17 2015-12-17 Data transmission method, device, terminal and base station Active CN108370560B (en)

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