CN106658729A - Flexible transmission method - Google Patents
Flexible transmission method Download PDFInfo
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- CN106658729A CN106658729A CN201611145366.3A CN201611145366A CN106658729A CN 106658729 A CN106658729 A CN 106658729A CN 201611145366 A CN201611145366 A CN 201611145366A CN 106658729 A CN106658729 A CN 106658729A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a flexible data transmission method. The method comprises the steps that a first node allocates a first shared transmission resource divided into first and second sub-transmission resources in time for a second node; the second node randomly selects a spreading code word A in a first spreading code word set, and selects a group of spreading code word sub-set including X spread code words from a second spreading code word set according to A; the second node transmits A on the first sub-transmission resource, uses the spreading code word to spread Y-bit data to be transmitted on the second sub-transmission resource, and transmits the data; the first node decodes the Y-bit data through channel information and the spreading code word sub-set; if the second node does not receive ACK after Z number of times of transmission on the first shared resource, the second node transmits a link abnormality spreading code word on a link abnormality information resource; and the first node measures the energy value of the received link abnormality spreading code word, and carries out follow-up operation according to the energy value. According to the invention, the robustness of data transmission can be effectively increased.
Description
Technical field
The present invention relates to the transmission side data in moving communicating field, more particularly to a kind of 5th generation wireless communication system
Method.
Background technology
Rise and abundant, the data user's number in wireless communication system of wireless data application business with intelligent terminal
It is significantly increased, data content is no longer confined to traditional word or image, and future customer is to high definition video, mobile TV etc.
The demand of multimedia service is more and more, causes wireless network traffic to present the situation of explosive growth.According to market institution
Prediction, coming 10 years, wireless data service will increase by 500～1000 times, and 1.6～2 times are increased every year on average, and this is to radio communication
The network capacity of system is put forward higher requirement.
Towards the year two thousand twenty and future, mobile Internet and internet of things service will become the main driving of Mobile Communication Development
Power.5G will meet people living, work, the diversified business demand in leisure and the various regions such as traffic, even if it is intensive live
Quarter, office, stadium, outdoor rally, subway, through street, high ferro and wide area covering etc. has ultra high flux density, superelevation
Connection number density, the scene of ultrahigh-mobility feature, it is also possible to provide the user ultra high-definition video, virtual reality, augmented reality,
The ultimate attainment business experience such as cloud desktop, game on line.At the same time, 5G will also penetrate into Internet of Things and various industries field, with work
Industry facility, Medical Instruments, the fusion of vehicles even depth, effectively meet the diversified industry of the vertical industries such as industry, medical treatment, traffic
Business demand, realizes real " all things on earth interconnection ".
5G will solve the challenge that differentiation performance indications are brought under diversified application scenarios, the property that different application scene faces
Can challenge different, Consumer's Experience speed, flux density, time delay, efficiency and connection number are all likely to become choosing for different scenes
War property index.From mobile Internet and the main application scenarios of Internet of Things, business demand and challenge, continuous wide area can be summarized
Covering, focus high power capacity, the big connection of low-power consumption and the highly reliable four 5G major technique scenes of low time delay.
Current uplink mechanism needs terminal first to send scheduling request information, and then base station is believed again based on dispatch request
Breath distribution bandwidth request resource to terminal, terminal by bandwidth request resource transmission bandwidth solicited message to base station, base station base again
Terminal distribution transmitting uplink data resource is given in bandwidth request information.For the application scenarios of large-scale machines communication, this side
Formula can bring system to be difficult to the signaling storm born, it is therefore desirable to reduce system control overhead as far as possible.
The content of the invention
It is an object of the invention to overcome large-scale machines communication data transfer present in the 5th generation wireless communication system
A kind of the problems such as control overhead is big, there is provided flexible data transmission method.
It is that, up to above-mentioned purpose, the present invention is achieved through the following technical solutions：
A kind of flexible data transmission method, comprises the following steps：1) the first communication node is the distribution of the second communication node
First shared transmission resource, the described first shared resource that sends is that second communication node and other second communication nodes are common
Enjoy, the described first shared transmission resource is divided into the first son transmission resource in time and the second son sends resource two parts, described
First son sends the time domain length of resource and sends resource less than the described second son, and first son to send and allow what is used in resource
Spread spectrum codeword set is the first spread spectrum codeword set, and second son to send and allow the spread spectrum codeword set that uses in resource for the
Two spread spectrum codeword sets, the spread spectrum code word size L1 in the first spread spectrum codeword set is more than the described second spread spectrum codeword set
In spread spectrum code word size L2, it is described first spread spectrum codeword set in spread spectrum code word between be it is orthogonal, it is described second spread
It is quasi-orthogonal between spread spectrum code word in codeword set, first communication node receives described the using T roots reception antenna
The one shared data sent in resource, T=2S, S is the integer more than or equal to 6；2) second communication node is described first
One spread spectrum code word A of random selection in spread spectrum codeword set, according to spread spectrum code word A from the described second spread spectrum codeword set choosing
One group of spread spectrum code word subclass is selected, the spread spectrum code word subclass includes X spread spectrum code word, and second communication node is described
First son sends resource and sends spread spectrum code word A, sends in resource by the spread spectrum code word subclass in the described second son
Spread spectrum code word sends after spreading to Y bit data waiting for transmission respectively, and wherein X is the integer more than or equal to 1, Y be more than
Integer equal to 16, wherein, the Y bit data are at least including the identification information of second communication node；3) described first
Communication node sends from the described first son and receive in resource spread spectrum code word A that second communication node sends, by spreading code
Word A obtains the channel information of second communication node and first communication node, and obtains institute by spread spectrum code word A
State the second communication node and the spread spectrum code word subclass used in resource is sent in the described second son, first communication node is used
The channel information and the spread spectrum code word subclass decode second communication node and send out in the described second son transmission resource
The Y bit data sent；If 4) second communication node sends the Z Y bit in first shared resource
Data are all not received by the reception successful information that first communication node sends, then second communication node is described the
The link exception information of one communication node distribution sends transmission link spread spectrum code word extremely in resource, wherein, Z is more than or equal to 4
Integer；5) energy value of the link that the first communication node measurement is received spread spectrum code word extremely, according to the energy
Value carries out subsequent operation.
Further, equal to max, (1024/T, 1), when L2 values are 1, described second spreads the spread spectrum code word size L2
Only comprising the codeword sequence that value is 1 in codeword set.
Further, the first spread spectrum codeword set includes two son spread spectrum codeword sets, the referred to as first sub- spreading code
Word set and the second son spread spectrum codeword set, it is sky that both occur simultaneously, if spread spectrum code word A belongs to the first son spread spectrum code word set
Close, then the X is equal to 1, if spread spectrum code word A belongs to the second son spread spectrum codeword set, the X is equal to 2.
Further, if second communication node sends first biography packet, from the described first son spread spectrum code word set
Spread spectrum code word A is selected in conjunction, if second communication node sends retransmits packet, from the described second sub- spreading code
Spread spectrum code word A is selected in word set.
Further, second communication node is sent in the described first son using maximum transmission power and send institute in resource
Frequency expansion sequence A is stated, in first communication node by randomly choosing a work(in a power span signaling
Rate value sends in the described second son and send the Y bit data in resource.
Further, the power value that second communication node passes through to signal in first communication node
In the range of randomly choose a performance number and send in the described first son and send in resource the frequency expansion sequence A and sub described second
Send and send the Y bit data in resource.
Further, second communication node it is interval (0.5,1] in one value of random selection communicate with described second
Path loss between node and first communication node is multiplied, and obtains converting circuit loss value, using the conversion circuit loss value as described
Second communication node is transmitted the circuit loss value that power is used, and is then sent in the described first son using calculated performance number
The frequency expansion sequence A is sent in resource and is sent in the described second son and send the Y bit data in resource.
Further, if the energy value is more than 100dB, first communication node sends two sets of power selection collection
Close, be referred to as normal power set and reinforcing power set, if second communication node is transmitted across link and spreads extremely
Code word, then subsequently selection transmission power level is provided second communication node from the described first shared transmission from reinforcing power set
Source continues to send data, if second communication node is not transmitted across link spread spectrum code word extremely, second communication section
Point continues to send data from normal power Resource selection transmission power level from the described first shared resource that sends.
Further, the performance number in the reinforcing power set is more than the performance number in the normal power set.
Further, if the energy value is more than 100dB, first communication node sends the second shared transmission and provides
Source, if second communication node is transmitted across link spread spectrum code word extremely, second communication node is stopped using described
First shared transmission resource, subsequently continues to send data, if second communication section using the described second shared resource that sends
Point is not transmitted across link extremely spread spectrum code word, then second communication node is continuing with the described first shared resource that sends and sends
Data.
The invention has the beneficial effects as follows：The invention provides a kind of data transmission method of low control overhead, including first
Node is divided in time the first shared transmission resource that the first and second sons send resources for Section Point distribution, and the first son is sent out
To send allowed in resource and use the first spread spectrum codeword set, the second son sends and allow in resource using the second spread spectrum codeword set；The
Two nodes, one spread spectrum code word A of random selection in the first spread spectrum codeword set, according to spread spectrum code word A from the second spread spectrum code word set
Close and select one group of spread spectrum code word subclass comprising X spread spectrum code word.Section Point sends resource and sends spreading code in the first son
Word A, sends after the second son is sent and using the spread spectrum code word Y bit data waiting for transmission spread respectively in resource；
First node receives spread spectrum code word A, and the channel information of Section Point and first node is obtained by spreading code word A, and by expanding
Frequency code word A is obtained and is sent the spread spectrum code word subclass that uses in resource in the second son, first node using the channel information and
Spread spectrum code word subclass decodes the Y bit data；If Section Point sends Z time in the first shared resource and does not all receive
To ACK, then Section Point sends transmission link spread spectrum code word extremely in resource in the link exception information that first node distributes；The
The energy value of the link that one node measurement is received spread spectrum code word extremely, according to the energy value carry out subsequent operation this
The bright robustness for being effectively increased data transfer adopts the method for the invention and device (system), compared with prior art, can
It is effectively increased the robustness of data transfer to adapt to the business demand of the 5th generation wireless communication system.
Description of the drawings
Fig. 1 is the flow chart of the data transmission method of the present invention；
Fig. 2 is the first shared transmission resource schematic diagram.
Specific embodiment
Accompanying drawing is combined below by specific embodiment to be described in further detail the present invention.
As shown in Figure 1, method of the present invention flow process is as follows：
Step 102, the first communication node is that the second communication node distribution first is shared sends resource, wherein, described first
The shared resource that sends is that second communication node and other second communication nodes are shared, and the described first shared resource that sends exists
It is divided into the first son on time and sends resource and second son transmission resource two parts, the time domain length that first son sends resource is little
Resource is sent in the described second son, first son sends allows the spread spectrum codeword set for using to be the first spread spectrum code word in resource
Set, second son sends allows the spread spectrum codeword set for using to be the second spread spectrum codeword set in resource, described first expands
Spread spectrum code word size L1 in frequency codeword set more than the spread spectrum code word size L2 in the described second spread spectrum codeword set, described the
It is orthogonal between spread spectrum code word in one spread spectrum codeword set, is between the spread spectrum code word in the second spread spectrum codeword set
Quasi-orthogonal, first communication node receives the described first shared data sent in resource, T=using T roots reception antenna
2S, S is the integer more than or equal to 6.
Step 104, second communication node, one spread spectrum code word of random selection in the described first spread spectrum codeword set
A, according to spread spectrum code word A from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection, the spread spectrum code word
Subclass includes X spread spectrum code word, and second communication node sends resource and sends spread spectrum code word A in the described first son, in institute
State and by the spread spectrum code word in the spread spectrum code word subclass Y bit data waiting for transmission are entered respectively in the second son transmission resource
Send after row spread spectrum, wherein X is the integer more than or equal to 1, and Y is the integer more than or equal to 16, wherein, the Y bit data are extremely
Less including the identification information of second communication node.
Step 106, first communication node sends from the described first son and receive in resource second communication node
Spread spectrum code word A sent, the channel information of second communication node and first communication node is obtained by spreading code word A,
And spread spectrum code word that second communication node is used in the described second son transmission resource is obtained by spread spectrum code word A
Set, first communication node decodes second communication node using the channel information and the spread spectrum code word subclass
The Y bit data sent in resource are sent in the described second son.
Step 108, if second communication node sends the Z Y bit data in first shared resource
The reception successful information that first communication node sends all is not received by, then second communication node is logical described first
The link exception information of letter node distribution sends transmission link spread spectrum code word extremely in resource, wherein, Z is whole more than or equal to 4
Number.
Step 110, the energy value of the link that the first communication node measurement is received spread spectrum code word extremely, according to
The energy value carries out subsequent operation.
Embodiment 1
Base station gives that terminal A distribution first is shared to send resource, it is preferable that base station receives described the using T roots reception antenna
The one shared data sent in resource, T is 2 S power, and S is the integer more than or equal to 6.
As shown in Figure 2, the first shared transmission resource is divided in time the first son transmission resource and the second son sends and provides
Source two parts, first son sends the time domain length of resource and sends resource less than the described second son, and first son sends money
The spread spectrum codeword set for using is allowed to be the first spread spectrum codeword set on source, second son sends the expansion for allowing to use in resource
Frequency codeword set is the second spread spectrum codeword set, and the spread spectrum code word size L1 in the first spread spectrum codeword set is more than described the
Spread spectrum code word size L2 in two spread spectrum codeword sets, is orthogonal between the spread spectrum code word in the first spread spectrum codeword set
(such as walsh codes), is quasi-orthogonal (such as pseudo noise code) between the spread spectrum code word in the second spread spectrum codeword set, this
The purpose for planting design is to ensure that base station successfully obtains as precisely as possible the channel information of terminal A, based on described information, base station profit
Terminal is made a distinction on spatial domain with its at least 256 reception antenna for configuring, is allowed for the second son and is sent in resource not
The data sent with terminal can be orthogonal with standard, improves the utilization ratio of resource.
Terminal A for sending upstream data one spread spectrum code word A of random selection in the described first spread spectrum codeword set is needed,
(for example pre-defined individual from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection according to spread spectrum code word A
Mapping form), the spread spectrum code word subclass includes X spread spectrum code word, and second communication node sends in the described first son
Resource sends spread spectrum code word A allows base station to carry out channel estimation, sends in resource by spread spectrum code word in the described second son
Spread spectrum code word in set sends after spreading to Y bit data waiting for transmission respectively, and wherein X is the integer more than or equal to 1,
Y is the integer more than or equal to 16, wherein, the Y bit data at least including the identification information of terminal A, reason for this is that
The first shared resource that sends is that terminal A is shared with other terminals, and the terminal for having data is activation demand is shared described first and sent out
Send and send in resource data, so it is which terminal is sending data that base station is not aware that, it is therefore necessary to carry identification information.
Base station sends spread spectrum code word A that receiving terminal A sends in resource from the described first son, is obtained by spreading code word A
The channel information of second communication node and first communication node, and terminal A is obtained in institute by spread spectrum code word A
State the second son and send the spread spectrum code word subclass used in resource, base station uses the channel information and the spread spectrum subset of code words
Close decoding terminal A and the Y bit data sent in resource are sent in the described second son.
If terminal A sends the Z Y bit data in first shared resource and is all not received by base station transmission
Reception successful information, then the link exception information that terminal A is distributed in base station sends transmission link spread spectrum code word extremely in resource,
Wherein, Z is the integer more than or equal to 4.Preferably, multiple terminals that link exception occurs can send identical link and expand extremely
Frequency code word, advantage of this is that and as fast as possible allow base station to know to have terminal to there occurs link exception, although being not aware that is
There is exception in which terminal, to help, recovery measure is taken as early as possible in base station.
The energy value of the link that base station measurement is received spread spectrum code word extremely, if energy value is more than 100dB, base
Stand and send two sets of power selection set, normal power set and reinforcing power set are referred to as, if terminal A is transmitted across link
Abnormal spread spectrum code word, then subsequently selection transmission power level shares transmission resource to terminal A from described first from reinforcing power set
Continue to send data, if terminal A is not transmitted across link spread spectrum code word extremely, terminal A is launched from normal power Resource selection
Performance number continues to send data from the described first shared resource that sends.Preferably, the performance number in the reinforcing power set is big
Performance number in the normal power set, so has the advantage that improving link has abnormal terminal power, is lifted
The service quality of this part terminal, while to the reasonable terminal impacts very little of link-quality.
Embodiment 2
Base station gives that terminal A distribution first is shared to send resource, it is preferable that base station receives described the using T roots reception antenna
The one shared data sent in resource, T is 2 S power, and S is the integer more than or equal to 6.
As shown in Figure 2, the first shared transmission resource is divided in time the first son transmission resource and the second son sends and provides
Source two parts, first son sends the time domain length of resource and sends resource less than the described second son, and first son sends money
The spread spectrum codeword set for using is allowed to be the first spread spectrum codeword set on source, second son sends the expansion for allowing to use in resource
Frequency codeword set is the second spread spectrum codeword set, and the spread spectrum code word size L1 in the first spread spectrum codeword set is more than described the
Spread spectrum code word size L2 in two spread spectrum codeword sets, is orthogonal between the spread spectrum code word in the first spread spectrum codeword set
(such as walsh codes), is quasi-orthogonal (such as pseudo noise code) between the spread spectrum code word in the second spread spectrum codeword set, this
The purpose for planting design is to ensure that base station successfully obtains as precisely as possible the channel information of terminal A, based on described information, base station profit
Terminal is made a distinction on spatial domain with its at least 256 reception antenna for configuring, is allowed for the second son and is sent in resource not
The data sent with terminal can be orthogonal with standard, improves the utilization ratio of resource.
Preferably, the spread spectrum code word size L2 be equal to max (1024/T, 1), when L2 values are 1, second spreading code
Only comprising the codeword sequence that value is 1 in word set, be the reason for so design the reception antenna configured when base station progressively
During increase, base station can obtain higher reception beam forming gain, and this fractionated gain allows terminal A to send in resource in the second son
Data is activation is carried out using shorter spread spectrum code word, so as to improve the spectrum efficiency of system.
Terminal A for sending upstream data one spread spectrum code word A of random selection in the described first spread spectrum codeword set is needed,
(for example pre-defined individual from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection according to spread spectrum code word A
Mapping form), the spread spectrum code word subclass includes X spread spectrum code word, and second communication node sends in the described first son
Resource sends spread spectrum code word A allows base station to carry out channel estimation, sends in resource by spread spectrum code word in the described second son
Spread spectrum code word in set sends after spreading to Y bit data waiting for transmission respectively, and wherein X is the integer more than or equal to 1,
Y is the integer more than or equal to 16, wherein, the Y bit data at least including the identification information of terminal A, reason for this is that
The first shared resource that sends is that terminal A is shared with other terminals, and the terminal for having data is activation demand is shared described first and sent out
Send and send in resource data, so it is which terminal is sending data that base station is not aware that, it is therefore necessary to carry identification information.
Base station sends spread spectrum code word A that receiving terminal A sends in resource from the described first son, is obtained by spreading code word A
The channel information of second communication node and first communication node, and terminal A is obtained in institute by spread spectrum code word A
State the second son and send the spread spectrum code word subclass used in resource, base station uses the channel information and the spread spectrum subset of code words
Close decoding terminal A and the Y bit data sent in resource are sent in the described second son.
If terminal A sends the Z Y bit data in first shared resource and is all not received by base station transmission
Reception successful information, then the link exception information that terminal A is distributed in base station sends transmission link spread spectrum code word extremely in resource,
Wherein, Z is the integer more than or equal to 4.Preferably, multiple terminals that link exception occurs can send identical link and expand extremely
Frequency code word, advantage of this is that and as fast as possible allow base station to know to have terminal to there occurs link exception, although being not aware that is
There is exception in which terminal, to help, recovery measure is taken as early as possible in base station.
The energy value of the link that base station measurement is received spread spectrum code word extremely, if energy value is more than 100dB, base
Stand and send two sets of power selection set, normal power set and reinforcing power set are referred to as, if terminal A is transmitted across link
Abnormal spread spectrum code word, then subsequently selection transmission power level shares transmission resource to terminal A from described first from reinforcing power set
Continue to send data, if terminal A is not transmitted across link spread spectrum code word extremely, terminal A is launched from normal power Resource selection
Performance number continues to send data from the described first shared resource that sends.Preferably, the performance number in the reinforcing power set is big
Performance number in the normal power set, so has the advantage that improving link has abnormal terminal power, is lifted
The service quality of this part terminal, while to the reasonable terminal impacts very little of link-quality.
Embodiment 3
Base station gives that terminal A distribution first is shared to send resource, it is preferable that base station receives described the using T roots reception antenna
The one shared data sent in resource, T is 2 S power, and S is the integer more than or equal to 6.
As shown in Figure 2, the first shared transmission resource is divided in time the first son transmission resource and the second son sends and provides
Source two parts, first son sends the time domain length of resource and sends resource less than the described second son, and first son sends money
The spread spectrum codeword set for using is allowed to be the first spread spectrum codeword set on source, second son sends the expansion for allowing to use in resource
Frequency codeword set is the second spread spectrum codeword set, and the spread spectrum code word size L1 in the first spread spectrum codeword set is more than described the
Spread spectrum code word size L2 in two spread spectrum codeword sets, is orthogonal between the spread spectrum code word in the first spread spectrum codeword set
(such as walsh codes), is quasi-orthogonal (such as pseudo noise code) between the spread spectrum code word in the second spread spectrum codeword set, this
The purpose for planting design is to ensure that base station successfully obtains as precisely as possible the channel information of terminal A, based on described information, base station profit
Terminal is made a distinction on spatial domain with its at least 256 reception antenna for configuring, is allowed for the second son and is sent in resource not
The data sent with terminal can be orthogonal with standard, improves the utilization ratio of resource.
Terminal A for sending upstream data one spread spectrum code word A of random selection in the described first spread spectrum codeword set is needed,
(for example pre-defined individual from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection according to spread spectrum code word A
Mapping form), the spread spectrum code word subclass includes X spread spectrum code word.Preferably, the first spread spectrum codeword set includes two
Height spreads codeword set, the referred to as first sub- spread spectrum codeword set and the second son spread spectrum codeword set, and it is sky that both occur simultaneously, if
Spread spectrum code word A belongs to the first son spread spectrum codeword set, then the X is equal to 1, if to belong to second sub for spread spectrum code word A
Spread spectrum codeword set, then the X is equal to 2.Second communication node sends resource transmission spread spectrum code word A and allows in the described first son
Base station carries out channel estimation, sends in resource by the spread spectrum code word difference in the spread spectrum code word subclass in the described second son
Send after spreading to Y bit data waiting for transmission, wherein X is the integer more than or equal to 1, and Y is the integer more than or equal to 16,
Wherein, the Y bit data reason for this is that the first shared resource that sends is eventually at least including the identification information of terminal A
End A shares with other terminals, and the terminal for having data is activation demand send data in resource in the described first shared transmission, so
It is which terminal is sending data that base station is not aware that, it is therefore necessary to carry identification information.
Base station sends spread spectrum code word A that receiving terminal A sends in resource from the described first son, is obtained by spreading code word A
The channel information of second communication node and first communication node, and terminal A is obtained in institute by spread spectrum code word A
State the second son and send the spread spectrum code word subclass used in resource, base station uses the channel information and the spread spectrum subset of code words
Close decoding terminal A and the Y bit data sent in resource are sent in the described second son.
If terminal A sends the Z Y bit data in first shared resource and is all not received by base station transmission
Reception successful information, then the link exception information that terminal A is distributed in base station sends transmission link spread spectrum code word extremely in resource,
Wherein, Z is the integer more than or equal to 4.Preferably, multiple terminals that link exception occurs can send identical link and expand extremely
Frequency code word, advantage of this is that and as fast as possible allow base station to know to have terminal to there occurs link exception, although being not aware that is
There is exception in which terminal, to help, recovery measure is taken as early as possible in base station.
The energy value of the link that base station measurement is received spread spectrum code word extremely, if energy value is more than 100dB, base
Stand and send two sets of power selection set, normal power set and reinforcing power set are referred to as, if terminal A is transmitted across link
Abnormal spread spectrum code word, then subsequently selection transmission power level shares transmission resource to terminal A from described first from reinforcing power set
Continue to send data, if terminal A is not transmitted across link spread spectrum code word extremely, terminal A is launched from normal power Resource selection
Performance number continues to send data from the described first shared resource that sends.Preferably, the performance number in the reinforcing power set is big
Performance number in the normal power set, so has the advantage that improving link has abnormal terminal power, is lifted
The service quality of this part terminal, while to the reasonable terminal impacts very little of link-quality.
Embodiment 4
Base station gives that terminal A distribution first is shared to send resource, it is preferable that base station receives described the using T roots reception antenna
The one shared data sent in resource, T is 2 S power, and S is the integer more than or equal to 6.
As shown in Figure 2, the first shared transmission resource is divided in time the first son transmission resource and the second son sends and provides
Source two parts, first son sends the time domain length of resource and sends resource less than the described second son, and first son sends money
The spread spectrum codeword set for using is allowed to be the first spread spectrum codeword set on source, second son sends the expansion for allowing to use in resource
Frequency codeword set is the second spread spectrum codeword set, and the spread spectrum code word size L1 in the first spread spectrum codeword set is more than described the
Spread spectrum code word size L2 in two spread spectrum codeword sets, is orthogonal between the spread spectrum code word in the first spread spectrum codeword set
(such as walsh codes), is quasi-orthogonal (such as pseudo noise code) between the spread spectrum code word in the second spread spectrum codeword set, this
The purpose for planting design is to ensure that base station successfully obtains as precisely as possible the channel information of terminal A, based on described information, base station profit
Terminal is made a distinction on spatial domain with its at least 256 reception antenna for configuring, is allowed for the second son and is sent in resource not
The data sent with terminal can be orthogonal with standard, improves the utilization ratio of resource.
Terminal A for sending upstream data one spread spectrum code word A of random selection in the described first spread spectrum codeword set is needed,
(for example pre-defined individual from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection according to spread spectrum code word A
Mapping form), the spread spectrum code word subclass includes X spread spectrum code word, and second communication node sends in the described first son
Resource sends spread spectrum code word A allows base station to carry out channel estimation, sends in resource by spread spectrum code word in the described second son
Spread spectrum code word in set sends after spreading to Y bit data waiting for transmission respectively, and wherein X is the integer more than or equal to 1,
Y is the integer more than or equal to 16, wherein, the Y bit data at least including the identification information of terminal A, reason for this is that
The first shared resource that sends is that terminal A is shared with other terminals, and the terminal for having data is activation demand is shared described first and sent out
Send and send in resource data, so it is which terminal is sending data that base station is not aware that, it is therefore necessary to carry identification information.
Preferably, terminal A is sent in the described first son using maximum transmission power and send the frequency expansion sequence A in resource,
Resource is sent in base station in the described second son by randomly choosing a performance number in a power span signaling
It is upper to send the Y bit data, advantage of this is that by the accuracy of sufficiently high power assurance channel estimation to be lifted
The spatial resolution of channel estimation results, randomly choose in resource power assurance base station side reception difference by sending in the second son
There is power fluctuation situation during the data that terminal sends, connect so as to better profiting from parallel interference canceller receiver and carrying out data
Receive, the power span is that base station determines according to the receiving ability of oneself.Or, it is preferable that terminal A passes through in base station
One performance number of random selection sends in the described first son and send in resource described in the power span for signaling
Frequency expansion sequence A and described second son send resource on send the Y bit data, the benefit of do so makes base station side work(occur
Rate rises and falls, and saves the transmit power of terminal.Or, it is preferable that terminal A it is interval (0.5,1] in one value of random selection
Path loss and terminal A and base station between is multiplied, and obtains converting circuit loss value, using the conversion circuit loss value as second communication section
Point carries out the circuit loss value that transmit power is used, and then (for example calculates public using the path loss of LTE using calculated performance number
Formula) the frequency expansion sequence A is sent in the described first son transmission resource and the Y ratios is sent in the described second son transmission resource
Special data.
Base station sends spread spectrum code word A that receiving terminal A sends in resource from the described first son, is obtained by spreading code word A
The channel information of second communication node and first communication node, and terminal A is obtained in institute by spread spectrum code word A
State the second son and send the spread spectrum code word subclass used in resource, base station uses the channel information and the spread spectrum subset of code words
Close decoding terminal A and the Y bit data sent in resource are sent in the described second son.
If terminal A sends the Z Y bit data in first shared resource and is all not received by base station transmission
Reception successful information, then the link exception information that terminal A is distributed in base station sends transmission link spread spectrum code word extremely in resource,
Wherein, Z is the integer more than or equal to 4.Preferably, multiple terminals that link exception occurs can send identical link and expand extremely
Frequency code word, advantage of this is that and as fast as possible allow base station to know to have terminal to there occurs link exception, although being not aware that is
There is exception in which terminal, to help, recovery measure is taken as early as possible in base station.
The energy value of the link that base station measurement is received spread spectrum code word extremely, if energy value is more than 100dB, base
Stand and send two sets of power selection set, normal power set and reinforcing power set are referred to as, if terminal A is transmitted across link
Abnormal spread spectrum code word, then subsequently selection transmission power level shares transmission resource to terminal A from described first from reinforcing power set
Continue to send data, if terminal A is not transmitted across link spread spectrum code word extremely, terminal A is launched from normal power Resource selection
Performance number continues to send data from the described first shared resource that sends.Preferably, the performance number in the reinforcing power set is big
Performance number in the normal power set, so has the advantage that improving link has abnormal terminal power, is lifted
The service quality of this part terminal, while to the reasonable terminal impacts very little of link-quality.
Embodiment 5
Base station gives that terminal A distribution first is shared to send resource, it is preferable that base station receives described the using T roots reception antenna
The one shared data sent in resource, T is 2 S power, and S is the integer more than or equal to 6.
As shown in Figure 2, the first shared transmission resource is divided in time the first son transmission resource and the second son sends and provides
Source two parts, first son sends the time domain length of resource and sends resource less than the described second son, and first son sends money
The spread spectrum codeword set for using is allowed to be the first spread spectrum codeword set on source, second son sends the expansion for allowing to use in resource
Frequency codeword set is the second spread spectrum codeword set, and the spread spectrum code word size L1 in the first spread spectrum codeword set is more than described the
Spread spectrum code word size L2 in two spread spectrum codeword sets, is orthogonal between the spread spectrum code word in the first spread spectrum codeword set
(such as walsh codes), is quasi-orthogonal (such as pseudo noise code) between the spread spectrum code word in the second spread spectrum codeword set, this
The purpose for planting design is to ensure that base station successfully obtains as precisely as possible the channel information of terminal A, based on described information, base station profit
Terminal is made a distinction on spatial domain with its at least 256 reception antenna for configuring, is allowed for the second son and is sent in resource not
The data sent with terminal can be orthogonal with standard, improves the utilization ratio of resource.
Terminal A for sending upstream data one spread spectrum code word A of random selection in the described first spread spectrum codeword set is needed,
(for example pre-defined individual from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection according to spread spectrum code word A
Mapping form), the spread spectrum code word subclass includes X spread spectrum code word, and second communication node sends in the described first son
Resource sends spread spectrum code word A allows base station to carry out channel estimation, sends in resource by spread spectrum code word in the described second son
Spread spectrum code word in set sends after spreading to Y bit data waiting for transmission respectively, and wherein X is the integer more than or equal to 1,
Y is the integer more than or equal to 16, wherein, the Y bit data at least including the identification information of terminal A, reason for this is that
The first shared resource that sends is that terminal A is shared with other terminals, and the terminal for having data is activation demand is shared described first and sent out
Send and send in resource data, so it is which terminal is sending data that base station is not aware that, it is therefore necessary to carry identification information.
Base station sends spread spectrum code word A that receiving terminal A sends in resource from the described first son, is obtained by spreading code word A
The channel information of second communication node and first communication node, and terminal A is obtained in institute by spread spectrum code word A
State the second son and send the spread spectrum code word subclass used in resource, base station uses the channel information and the spread spectrum subset of code words
Close decoding terminal A and the Y bit data sent in resource are sent in the described second son.
If terminal A sends the Z Y bit data in first shared resource and is all not received by base station transmission
Reception successful information, then the link exception information that terminal A is distributed in base station sends transmission link spread spectrum code word extremely in resource,
Wherein, Z is the integer more than or equal to 4.Preferably, multiple terminals that link exception occurs can send identical link and expand extremely
Frequency code word, advantage of this is that and as fast as possible allow base station to know to have terminal to there occurs link exception, although being not aware that is
There is exception in which terminal, to help, recovery measure is taken as early as possible in base station.
If the energy value that base station measurement is obtained is more than 100dB, base station sends the second shared transmission resource, if terminal
A is transmitted across link spread spectrum code word extremely, then terminal A stops using the described first shared transmission resource, subsequently using described second
The shared resource that sends continues to send data, if terminal A is not transmitted across link spread spectrum code word extremely, terminal A is continuing with institute
State the first shared resource that sends and send data, advantage of this is that there will be the abnormal terminal of link is diverted to new resource
In, the upstream data interference between terminal is reduced, improve systematic function.
Test result indicate that, using method of the present invention, in the case of data transfer demands being met, can effectively drop
Control signaling expense needed for low machine communication, it is to avoid the appearance of signaling storm problem.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of without departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of flexible data transmission method, it is characterised in that：The method comprising the steps of：
1) the first communication node is the shared transmission resource of the second communication node distribution first, and the described first shared resource that sends is institute
State the second communication node and other second communication nodes are shared, it is sub that the described first shared transmission resource is divided in time first
Send resource and the second son sends resource two parts, first son sends the time domain length of resource and sends less than the described second son
Resource, first son sends allows the spread spectrum codeword set for using to be the first spread spectrum codeword set in resource, described second is sub
Sending allows the spread spectrum codeword set for using to be the second spread spectrum codeword set in resource, described first spreads the expansion in codeword set
More than the spread spectrum code word size L2 in the described second spread spectrum codeword set, described first spreads in codeword set frequency code word length L1
Spread spectrum code word between be orthogonal, be between the spread spectrum code word in the second spread spectrum codeword set it is quasi-orthogonal, described the
One communication node receives the described first shared data sent in resource, T=2 using T roots reception antennaS, S is more than or equal to 6
Integer；
2) second communication node, one spread spectrum code word A of random selection in the described first spread spectrum codeword set, according to described
Spread spectrum code word A includes X from described second spread spectrum code word one group of spread spectrum code word subclass of Resource selection, the spread spectrum code word subclass
Individual spread spectrum code word, second communication node sends resource and sends spread spectrum code word A in the described first son, sends in the described second son
Send out after being spread to Y bit data waiting for transmission respectively by the spread spectrum code word in the spread spectrum code word subclass in resource
Send, wherein X is the integer more than or equal to 1, Y is the integer more than or equal to 16, wherein, the Y bit data at least include described
The identification information of the second communication node；
3) first communication node sends from the described first son and receive in resource the spreading code that second communication node sends
Word A, the channel information of second communication node and first communication node is obtained by spreading code word A, and by described
Spread spectrum code word A obtains second communication node and the spread spectrum code word subclass used in resource is sent in the described second son, described
First communication node decodes second communication node described the using the channel information and the spread spectrum code word subclass
Two sons send the Y bit data sent in resource；
If 4) second communication node sends the Z Y bit data in first shared resource and does not all receive
To first communication node send reception successful information, then second communication node distribute in first communication node
Link exception information send transmission link extremely spread spectrum code word in resource, wherein, Z is the integer more than or equal to 4；
5) energy value of the link that the first communication node measurement is received spread spectrum code word extremely, according to the energy value
Carry out subsequent operation.
2. data transmission method according to claim 1, it is characterised in that：The spread spectrum code word size L2 is equal to max
(1024/T,1)；When L2 values are 1, only comprising the codeword sequence that value is 1 in the second spread spectrum codeword set.
3. data transmission method according to claim 1, it is characterised in that：The first spread spectrum codeword set includes two
Son spread spectrum codeword set, the referred to as first sub- spread spectrum codeword set and the second son spread spectrum codeword set, it is sky that both occur simultaneously, if institute
State spread spectrum code word A and belong to the first son spread spectrum codeword set, then the X is equal to 1, if spread spectrum code word A belongs to the second son expanded
Frequency codeword set, then the X is equal to 2.
4. data transmission method according to claim 3, it is characterised in that：If second communication node sends first biography
Packet, then select spread spectrum code word A, if second communication node sends from the described first son spread spectrum codeword set
Packet is retransmitted, then selects spread spectrum code word A from the described second son spread spectrum codeword set.
5. data transmission method according to claim 1, it is characterised in that：Second communication node uses emission maximum
Power sends in the described first son and send the frequency expansion sequence A in resource, passes through what is signaled in first communication node
One performance number of random selection sends in the described second son and send the Y bit data in resource in one power span.
6. data transmission method according to claim 1, it is characterised in that：Second communication node is logical described first
Letter node sends resource by a power span one performance number of interior random selection for signaling in the described first son
It is upper to send the frequency expansion sequence A and send the Y bit data in the described second son transmission resource.
7. data transmission method according to claim 1, it is characterised in that：Second communication node it is interval (0.5,
1] one value of random selection is multiplied with the path loss between second communication node and first communication node in, is converted
Circuit loss value, the circuit loss value that power is used is transmitted using the conversion circuit loss value as second communication node, is then used
Calculated performance number sends in the described first son and send in resource the frequency expansion sequence A and in the described second son transmission resource
It is upper to send the Y bit data.
8. data transmission method according to claim 1, it is characterised in that：If the energy value is more than 100dB, institute
State the first communication node and send two sets of power selection set, be referred to as normal power set and reinforcing power set；If institute
State the second communication node and be transmitted across link spread spectrum code word extremely, then second communication node is subsequently selected from reinforcing power set
Select transmission power level to continue to send data from the described first shared resource that sends；If second communication node is not transmitted across chain
Road spread spectrum code word extremely, then second communication node is from normal power Resource selection transmission power level from described first shared
Resource is sent to continue to send data.
9. data transmission method according to claim 8, it is characterised in that：Performance number in the reinforcing power set is big
Performance number in the normal power set.
10. data transmission method according to claim 1, it is characterised in that：If the energy value is more than 100dB,
First communication node sends the second shared transmission resource, if second communication node is transmitted across link exception spreading code
Word, then second communication node stop using described first it is shared send resource, subsequently shared send money using described second
Source continues to send data, if second communication node is not transmitted across link spread spectrum code word extremely, second communication section
Point is continuing with the described first shared resource that sends and sends data.
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