CN104467948B - A kind of communication means and device - Google Patents
A kind of communication means and device Download PDFInfo
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- CN104467948B CN104467948B CN201310443108.3A CN201310443108A CN104467948B CN 104467948 B CN104467948 B CN 104467948B CN 201310443108 A CN201310443108 A CN 201310443108A CN 104467948 B CN104467948 B CN 104467948B
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- minimum frame
- frame
- subframe
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
Abstract
The invention discloses a kind of communication means and devices, are related to field of communication technology.In the present invention, a kind of communication means and device are provided, first transmission point obtains system design goal value, the quantity of minimum frame is determined according to system design goal value, and then determine frame structure, and communicated using determining frame.The method for adjusting frame structure by using dynamic, it is ensured that the realization of system design goal value improves the flexibility ratio of system, realizes system design goal.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of communication means and device.
Background technology
For certain transmission power, the data rate of transmission is higher, and coverage area can be lower.If being more than maximum fair
Perhaps transmission power, transmitter must reduce traffic rate to increase coverage distance.Transmission power is generally by standard criterion and user
The limitation of device battery, so the user of neighbor base station needs to use adaptive technique to provide higher number in the cellular system
According to rate, but data rate can drastically decline with increasing with base station spacing distance.Multihop network is then different, it can pass through
Jump provides long end-to-end communication distance through a series of intermediate nodes, while providing sufficiently high traffic rate.With transmitting terminal
It is compared to the distance between receiving terminal, the distance between each node, i.e., the distance often jumped is relatively short, and each jump can complete ratio
The much higher traffic rate of direct communication, to make equally to support high communication speed in the end-to-end communication system of long range
Rate.In multihop network, each node need to only transmit very short distance, and transmission power is relatively small, thus greatly reduce and be
Interference in system simultaneously makes channeling more crypto set.In addition, transmitting data through intermediate node due to that can jump, multihop network to believe
Number can establish transmission quality with the obturator of cut-through object and local network preferably route.
The frame structure used in common communication system is fixed, is not all carried out specifically for the transmission between multiple spot
Optimization, it is understood that there may be the waste of resource is unfavorable for the flexible configuration of system, cannot achieve system design goal.
Invention content
The present invention provides a kind of communication means and device, fixed frame structure in communication system can be solved and cannot be satisfied
The problem of system design goal value.
In order to achieve the above object, the embodiment of the present invention adopts the following technical scheme that：
On the one hand, an embodiment of the present invention provides a kind of communication devices, including：
Determination unit, the quantity M for determining minimum frame according to system design goal value, wherein M are positive integer；
Transmit-Receive Unit, for sending notification information to second transmission point, the notification information is used for the determination unit
The quantity M of determining minimum frame informs second transmission point, and is carried out using the frame comprising the M minimum frame and second transmission point
Communication.
In the first possible realization method of the first aspect, when the system design goal value designs for system
Prolong, the minimum frame includes at least one subframe, and the determination unit is further used for：
The time span of the quantity and the subframe of the subframe for including in time delay, the minimum frame is designed according to the system
To determine the quantity M of the minimum frame.
In the possible realization method of the first of the first aspect or the first aspect, described first is additionally provided
Second of possible realization method of aspect, the determination unit are further used for：
The quantity of the minimum frame is determined according to following formula：
M=Lower(Delay/(L×T))
Wherein, M is the quantity of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame,
T is the time span of subframe, and Lower is the operation mode for indicating downward rounding.
In the possible realization method of the first of the first aspect or the first aspect, described first is additionally provided
The third possible realization method of aspect, the determination unit are further used for：
The transformation of the minimum frame is determined according to following formula：
K=Lower(Delay/(L×T))
Wherein, K is the transformation of minimum frame, and Delay designs time delay for system, and L is the subframe for including in minimum frame
Quantity, T are the time span of subframe, and Lower is the operation mode for indicating downward rounding；
Determine that the quantity M of the minimum frame is the positive integer less than or equal to K.
In the first of the first aspect or the first aspect, the third possible realization method, additionally provide
4th kind of possible realization method of the first aspect, the determination unit are further used for：
Determine that the quantity M of the minimum frame is the maximum value for being less than or equal to K in value range.
In the 5th kind of possible realization method of the first aspect, the frame also includes at least one protection interval,
The system design goal value is system design overhead；
The determination unit is further used for：
According to the time of the quantity for the subframe for including in the system design overhead, the minimum frame, the subframe
The time span of length and the protection interval determines the quantity M of the minimum frame that the frame includes.
In the 5th kind of possible realization method of the first aspect or the first aspect, described first is additionally provided
6th kind of possible realization method of aspect, the determination unit are further used for：
The quantity of the minimum frame is determined according to following formula：
M=Upper(GP/(L×T×Overhead))
Wherein, M is the quantity of minimum frame, and GP is the time span of protection interval, and L is the number for the subframe that minimum frame includes
Amount, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up.
In the 5th kind of possible realization method of the first aspect or the first aspect, described first is additionally provided
7th kind of possible realization method of aspect, the determination unit are further used for：
The numerical lower limits of the minimum frame are determined according to following formula：
J=Upper(GP/(L×T×Overhead))
Wherein, J is the numerical lower limits of minimum frame, and GP is the time span of protection interval, and L is the subframe that minimum frame includes
Quantity, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up；
Determine that the quantity M of the minimum frame is the positive integer more than or equal to J.
In the 5th kind of the first aspect or the first aspect, the 7th kind of possible realization method, additionally provide
8th kind of possible realization method of the first aspect, the determination unit are further used for：
Determine that the quantity M of the minimum frame is the minimum value for being greater than or equal to J in value range.
In any possible realization method in the first of the first aspect or the first aspect to the 8th kind,
The 9th kind of possible realization method of the first aspect is additionally provided, the determination unit is further used for：
The system design goal value is monitored, if the system design goal value has update, obtains updated system
Design object value；And the quantity M of the minimum frame is determined according to the updated system design goal value.
In any possible realization method in the first of the first aspect or the first aspect to the 9th kind,
The tenth kind of possible realization method of the first aspect is additionally provided, the notification information also includes that use includes the M
The time that the frame of minimum frame is communicated with the second transmission point；
The Transmit-Receive Unit is further used for：
After reaching the time, communicated with the second transmission point using the frame comprising the M minimum frame.
In any possible realization method in the first of the first aspect or the first aspect to the tenth kind,
A kind of the tenth possible realization method of the first aspect is additionally provided, described device is base station, relaying or access point.
On the other hand, an embodiment of the present invention provides a kind of communication means, including：
First transmission point determines that the quantity M of minimum frame, wherein M are positive integer according to system design goal value；
First transmission point sends notification information to second transmission point, and the notification information is used for the minimum frame of the determination
Quantity M inform second transmission point；
First transmission point is communicated using the frame comprising the M minimum frame with second transmission point.
In the first possible realization method of the second aspect, when the system design goal value designs for system
Prolong, first transmission point determines that the quantity M of the minimum frame is specially according to the system design goal value：
First transmission point designs the quantity for the subframe for including in time delay, the minimum frame and the subframe according to the system
Time span determine the quantity M of the minimum frame.
In the possible realization method of the first of the second aspect or the second aspect, described second is additionally provided
Second of possible realization method of aspect, first transmission point, which is designed according to the system in time delay, the minimum frame, includes
The time span of the quantity of subframe and the subframe is specially to determine the quantity M of the minimum frame：
First transmission point determines the quantity of the minimum frame according to following formula：
M=Lower(Delay/(L×T))
Wherein, M is the quantity of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame,
T is the time span of subframe, and Lower is the operation mode for indicating downward rounding.
In the possible realization method of the first of the second aspect or the second aspect, described second is additionally provided
The third possible realization method of aspect, first transmission point, which is designed according to the system in time delay, the minimum frame, includes
The time span of the quantity of subframe and the subframe is specially to determine the quantity M of the minimum frame：
First transmission point determines the transformation of the minimum frame according to following formula：
K=Lower(Delay/(L×T))
Wherein, K is the transformation of minimum frame, and Delay designs time delay for system, and L is the subframe for including in minimum frame
Quantity, T are the time span of subframe, and Lower is the operation mode for indicating downward rounding；
First transmission point determines that the quantity M of the minimum frame is the positive integer less than or equal to K.
In the first of the second aspect or the second aspect, the third possible realization method, additionally provide
4th kind of possible realization method of the second aspect, first transmission point determine that the quantity M of the minimum frame is to be less than or wait
It is specially in the positive integer of K：
First transmission point determines that the quantity M of the minimum frame is the maximum value for being less than or equal to K in value range.
In the 5th kind of possible realization method of the second aspect, the frame also includes at least one protection interval,
The minimum frame includes at least one subframe, and the system design goal value is system design overhead；
First transmission point determines that the quantity M of the minimum frame is specially according to the system design goal value：
Quantity, the subframe of the first transmission point according to the subframe for including in the system design overhead, the minimum frame
Time span and the time span of the protection interval determine the quantity M of the minimum frame.
In the 5th kind of possible realization method of the second aspect or the second aspect, described second is additionally provided
6th kind of possible realization method of aspect, first transmission point include according in the system design overhead, the minimum frame
The time span of the quantity of subframe, the time span of the subframe and the protection interval determines the quantity M of the minimum frame
Specially：
First transmission point determines the quantity of the minimum frame according to following formula：
M=Upper(GP/(L×T×Overhead))
Wherein, M is the quantity of minimum frame, and GP is the time span of protection interval, and L is the number for the subframe that minimum frame includes
Amount, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up.
In the 5th kind of possible realization method of the second aspect or the second aspect, described second is additionally provided
7th kind of possible realization method of aspect, first transmission point include according in the system design overhead, the minimum frame
The time span of the quantity of subframe, the time span of the subframe and the protection interval determines the quantity M of the minimum frame
Specially：
First transmission point determines the numerical lower limits of the minimum frame according to following formula：
J=Upper(GP/(L×T×Overhead))
Wherein, J is the numerical lower limits of minimum frame, and GP is the time span of protection interval, and L is the subframe that minimum frame includes
Quantity, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up；
First transmission point determines that the quantity M of the minimum frame is the positive integer more than or equal to J.
In the 5th kind of the second aspect or the second aspect, the 7th kind of possible realization method, additionally provide
8th kind of possible realization method of the second aspect, first transmission point determine that the quantity M of the minimum frame is to be more than or wait
It is specially in the positive integer of K：
First transmission point determines that the quantity M of the minimum frame is the minimum value for being greater than or equal to J in value range.
In any possible realization method in the first of the second aspect or the second aspect to the 8th kind,
The 9th kind of possible realization method of the second aspect is additionally provided, first transmission point is true according to the system design goal value
Further include before the quantity for determining minimum frame：
First transmission point monitors the system design goal value, if the system design goal value has update, obtains more
System design goal value after new；And the quantity of the minimum frame is determined according to the updated system design goal value.
In any possible realization method in the first of the second aspect or the second aspect to the 9th kind,
The tenth kind of possible realization method of the second aspect is additionally provided, the notification information also includes that use includes the M
The time that the frame of minimum frame is communicated with second transmission point；
First transmission point is communicated specially using the frame comprising the M minimum frame with second transmission point：
First transmission point uses the frame comprising the M minimum frame and the second transmission point after reaching the time
It is communicated.
The present invention provides a kind of communication means and devices, and first transmission point obtains system design goal value, according to system
Design object value determines the quantity of minimum frame, and then determines frame structure, and is communicated using determining frame.By using dynamic
The method for adjusting frame structure, it is ensured that the realization of system design goal value improves the flexibility ratio of system, realizes that system designs mesh
Mark.
Description of the drawings
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 technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Figure 1A is a kind of flow chart of communication means provided in an embodiment of the present invention；
Figure 1B is a kind of frame structure schematic diagram of communication system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart designing the method that time delay is communicated according to system provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the method communicated according to system design overhead provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of the transfer point of communication system provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of the transfer point of another communication system provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of communication means is present embodiments provided, as shown in Figure 1A, detailed process is as follows：
A kind of frame structure is present embodiments provided, as shown in Figure 1B.In systems, frame structure generally may include in following
Hold：The time span of subframe can be expressed as T, and minimum frame may include L subframe, and wherein L is positive integer, and frame may include M
A minimum frame, wherein M are positive integer.
Optionally, it can also can be expressed as including at least one protection interval, the total time span of protection interval in frame
GP, then the time span of frame is M × L × T+GP.
In systems, since every frame includes M minimum frame, thus can be by the way that M values are flexibly arranged, dynamically to adjust frame
It is long, it realizes variable frame structure, reconfigures frame length.
101：First transmission point determines the quantity M of minimum frame according to system design goal value.
In the process of running, system design goal value can be arranged in communication system, and system design goal value is to carry out
During the network planning, network optimization etc., the requirement system performance parameter of setting needs the desired value met, is used for optimization system
Working condition, system design goal value can be configured or adjusted according to real network traffic-operating period by operator, also may be used
To be adjusted by communication system is adaptive during the network operation.
Optionally, system design goal value can with but be not limited to include system design time delay or system design overhead.System
System design object value is delayed when being designed for system, and the numerical value of the propagation delay time of system designs time delay no more than system, and system is set
When meter desired value is system design overhead, the numerical value of overhead is no more than system design overhead.
The executive agent of the method provided in the present embodiment is transfer point, including a variety of includes power amplifier（Power
Amplifier, PA）Equipment, such as the base station of various forms, such as macro base station, Home eNodeB, small base station in communication system, or
Relaying（Relay）, access point（Access Point, AP）Deng.
In the present embodiment, by adjusting frame structure to help communication system to realize that system design goal, wherein system are set
Meter desired value directly can set and provide when system initialization, can also be in the operational process of system into Mobile state
The mode of adjustment, dynamic adjustment can be periodically adjustment or aperiodicity adjustment.
Optionally, the method for first transmission point acquisition system design goal value can be with specifically, carry out in first transmission point
When initialization, system design goal value is configured by operator, and notify first transmission point.
Optionally, first transmission point obtain system design goal value method can with specifically, network operation mistake
Cheng Zhong is adjusted system design goal value by operator, and notifies first transmission point.
Optionally, first transmission point obtain system design goal value method can with specifically, network operation mistake
Cheng Zhong, by network of relation control node, such as base station controller（Base Station Controller, BSC）, mobile management it is real
Body（Mobility Management Entity, MME）Deng being adjusted to system design goal value, and notify the first transmission
Point.
Optionally, the method for first transmission point acquisition system design goal value can be with specifically, first transmission point monitors
System design goal value obtains updated system design goal value when system design goal value updates.
It may be, but is not limited to, according to systematic parameter, such as dispatching cycle, beam shaping period etc., be arranged in each minimum frame
Including the quantity L of subframe, the time span T of subframe and/or protection interval time span GP, setting method may be used appoint
A kind of prior art, details are not described herein again.
Optionally, if system design goal value designs time delay for system, determine frame structure method can according to time delay
Decision rule, time delay decision rule require actual Time Delay of Systems（Time Delay of Systems can be expressed as Delay_sys）No more than
System designs time delay（System design time delay can be expressed as Delay）.
First transmission point according to system design the subframe that time delay, minimum frame include quantity and subframe time span come
Determine the quantity for the minimum frame that frame includes.
Further alternative, first transmission point determines that the quantity for the minimum frame that frame includes specifically can be as follows：
The quantity of minimum frame can with but be not limited to need to meet formula（1）, as follows：
M=Lower(Delay/(L×T)) （1）
Wherein Lower indicates the operation mode of downward rounding.By formula（1）The M values being calculated, along with existing T and
L can obtain determining that the required parameter of frame structure, system use the transmission plan of such frame structure in data transmission procedure
Can control system time delay, realize the design object of system.
Further alternative, first transmission point determines that the quantity for the minimum frame that frame includes specifically can be as follows：
The transformation K of minimum frame needs to meet formula（2）, as follows：
K=Lower(Delay/(L×T)) （2）
Wherein Lower indicates the operation mode of downward rounding.The quantity M of minimum frame is any just whole less than or equal to K
Number, optionally, the quantity M of minimum frame can with but be not limited to the maximum value in value range, wherein value range includes system
The constraints that parameter provides, such as the value of default M are only one kind in 1,2,4,8, value range further include M most
Small value is 1, maximum value K, further alternative, value range can with but be not limited to include other systems constraints, most
Whole value range for above-mentioned institute's Prescribed Properties intersection.
By determining M, existing T and L is added, can obtain determining that the required parameter of frame structure, system are communicating
In the process use such frame structure transmission plan can control system time delay, realize the design object of system.
Optionally, if system design goal value be system design overhead, determine frame structure method can according to expense
Decision rule, expense decision rule require actual overhead（System design overhead can be expressed as Overhead_sys）No
More than system design overhead target（System design overhead can be expressed as Overhead）.
The quantity for the subframe that first transmission point includes according to system design overhead, minimum frame, the time span of subframe and
The time span of protection interval determines the quantity of minimum frame that frame includes.
Further alternative, first transmission point determines that the quantity for the minimum frame that frame includes specifically can be as follows：
The quantity of minimum frame can with but be not limited to need to meet formula（3）, as follows：
M=Upper(GP/(L×T×Overhead)) （3）
Wherein Upper indicates the operation mode to round up.By formula（2）The M values being calculated add existing T, L
And GP, it can obtain determining that the required parameter of frame structure, system use the transmission of such frame structure in data transmission procedure
Scheme can Control System Design expense, reach the design object of system design overhead.
Further alternative, first transmission point determines that the quantity for the minimum frame that frame includes specifically can be as follows：
The numerical lower limits J of minimum frame needs to meet formula（4）, as follows：
J=Upper(GP/(L×T×Overhead)) （4）
Wherein Upper indicates the operation mode to round up.The quantity M of minimum frame is any just whole more than or equal to J
Number, optionally, the quantity M of minimum frame can with but be not limited to the maximum value in value range, wherein value range includes system
The constraints that parameter provides, such as the value of default M are only one kind in 1,2,4,8, value range further include M most
It is small value be J, it is further alternative, value range can with but be not limited to include other systems constraints, final value model
It encloses for the intersection of above-mentioned institute's Prescribed Properties.
By determining M, existing T, L and GP are added, can obtain determining the required parameter of frame structure, system is logical
Letter during using such frame structure transmission plan can Control System Design expense, reach the design mesh of system design overhead
Mark.
102：First transmission point sends notification information to second transmission point.
First transmission point sends notification information after frame structure is determined, to second transmission point, by determining minimum frame
Quantity information inform second transmission point.Notification information can with but be not limited to the finger that first transmission point sends to second transmission point
It enables, the quantity information of instruction minimum frame is carried in instruction.
Optionally, notification information may further include the change time, wherein the change time, which is first transmission point, uses root
The initial time that the frame of the minimum number of frames determined according to system design goal value is communicated.
103：First transmission point is communicated using the frame comprising the M minimum frame with second transmission point.
After first transmission point sends notification information to second transmission point, according to the information that frame structure notifies, passed using first
The determining frame of defeated point is communicated.
System determines frame structure, by adjusting frame structure using the frame being flexibly arranged by system design goal value
Method can ensure the realization of time delay desired value or expense desired value, improve the flexibility ratio of system, realize system design goal.
Embodiment 2
In a communications system, frame structure can be adjusted into Mobile state according to system requirements, an embodiment of the present invention provides
A kind of communication means realizes demand of the system to Time Delay of Systems to optimization system time delay.
The mobile communication system of different systems, the method for mostly using frame transmission greatly, such as global system for mobile communications（Global
System for Mobile Communications, GSM）, wideband code division multiple access（Wideband Code-Division
Multiple Access, WCDMA）, time division SCDMA（Time-Division Synchronous Code-
Division Multiple Access, TD-SCDMA）, worldwide interoperability for microwave accesses（Worldwide
Interoperability for Microwave Access, WiMax), long term evolution（Long Term Evolution,
LTE) etc..
In the scene of the present embodiment, have BS1 as first transmission point, BS2 as second transmission point, between BS1 and BS2 into
Row frame transmits.
The basic parameter setting for the frame structure that communication system in the present embodiment uses is as follows：
The time span of the subframe of setting system is the microseconds of T=31.25, and the time span that minimum frame is arranged is L=8
Frame, the i.e. time span of minimum frame are 250 microseconds.
Optionally, the subframe that minimum frame includes can be conventional subframe, such as subframe for being communicated, or
Special subframe, such as the subframe for ascending pilot frequency, descending pilot frequency.The time span for the L subframe that minimum frame includes can be with
It is identical, it can not also be identical.
The time span of one frame could be provided as M=1,2,4,8 or 16 minimum frames.
Optionally, when system brings into operation, BS1 determines that the quantity of minimum frame is initial value M0=1, and is in subsequent
It unites in operational process, M values is determined according to system design goal value.
A kind of communication means provided in this embodiment is as shown in Fig. 2, detailed process is as follows：
201：BS1 determines the quantity M of minimum frame according to system design goal value.
System design goal value designs time delay for system, and provides the desired value of system design time delay, and BS1 is sentenced using time delay
Certainly criterion determines the quantity of minimum frame, and the desired value of the system design time delay set by system can be expressed as Delay.
BS1 needs to design time delay, determination used frame when being communicated with BS2 according to system when being communicated.
Assume that operator is that system design time delay D elay=0.6 millisecond is arranged in BS1 in the present embodiment, then the quantity of minimum frame
M need to meet formula（5）, as follows：
M=Lower(Delay/(L×T))=Lower(2.4)=2 （5）
Therefore determining M=2, the frame length of frame structure used in system is M × L × T=0.5 millisecond, and system is in communication process
Using the frame of such frame structure carry out communication can Control System Design time delay, realize system design time delay design object.
202：BS1 sends notification information to BS2.
BS1 sends notification information after frame structure is determined, to BS2, and determining frame structure information is notified BS2.
Specifically, notification information is informed for BS1 in the frame structure that BS2 is determined, the quantity of minimum frame is M=2.
Further, notification information carries the change time that BS1 begins to use new frame structure to be transmitted, this implementation
In example, BS1 will start to be transmitted using new frame structure in No. 1001 frame.
203：BS1 uses the frame comprising determining M minimum frame to be communicated with BS2.
In the present embodiment, BS1 is passed since No. 1001 frame using new frame structure after sending frame structure notice
It is defeated.
BS2 receives the notification information sent from BS1, therefrom obtain BS1 by the minimum number of frames M of frame to be used=
2, and the change time, in No. 1001 frame, BS2 is ready to be communicated using new frame after the change time of notice.
In the operational process of communication system, first transmission point and second transmission point can be according in system design goals
Variation to Time Delay of Systems demand determines updated frame structure, obtains the quantity of minimum frame, completes reconfiguring for frame structure,
Realize the dynamic need of system design goal.
Embodiment 3
In a communications system, frame structure can be adjusted into Mobile state according to system requirements, an embodiment of the present invention provides
A kind of communication means realizes demand of the system to overhead to optimization system expense.
In WLAN（Wireless Local Area Networks, WLAN）Scene, Wireless Fidelity（Wireless
Fidelity, Wi-Fi）Access point in system（Access Point, AP）And terminal（Station）Between communicated.
In the scene of the present embodiment, there is AP as first transmission point, STA is carried out as second transmission point between AP and STA
Frame transmits.
The basic parameter setting for the frame structure that communication system in the present embodiment uses is as follows：
The time span of the subframe of setting system is T=0.5 millisecond, and the time span that minimum frame is arranged is L=2 subframe,
I.e. the time span of minimum frame is 1 millisecond.
The time span of one frame could be provided as M=1,2,4,8 or 16 minimum frames, i.e., frame length be respectively 250 microseconds,
500 microseconds, 1 millisecond, 2 milliseconds or 4 milliseconds.
It is interfered to reduce, improves communication quality, it is GP that a frame, which includes a protection interval, and the position that GP is inserted into is arranged
It is set to postamble, while length GP=0.1 millisecond of GP is set.
Optionally, when system brings into operation, AP determines that the quantity of minimum frame is initial value M0=1, and in subsequent system
In operational process, M values are determined according to system design goal value.
A kind of communication means provided in this embodiment is as shown in figure 3, detailed process is as follows：
301：AP obtains system design goal value.
The operator of WLAN is configured system design goal value on AP, and system design goal value designs out for system
Pin, and provide the desired value of system design overhead, AP determine the quantity of minimum frame using expense decision rule, set by system
The desired value of system design overhead can be expressed as Overhead.
In the present embodiment, operator is that expense desired value Overhead=0.05 is arranged in AP.
302：AP determines the quantity M of minimum frame according to system design goal value.
According to desired value Overhead=0.05 of system design overhead, the numerical lower limits J of minimum frame need to meet formula（6）
J=Upper(GP/(L×T×Overhead))=Upper(2)=2 （6）
Therefore determining M=J=2, the frame length of frame structure used in system is M × L × T+GP=2.1 millisecond, and system was communicating
In journey using the allocation plan of the frame structure of the quantity of such minimum frame can control system expense, realize system design overhead
Design object.
303：AP sends notification information to STA.
AP sends notification information after frame structure is determined, to STA, and determining frame structure information is notified STA.
Specifically, notification information is informed for AP in the frame structure that STA is determined, the quantity of minimum frame is M=2.
Further, notification information carries the change time that AP begins to use new frame structure to be transmitted, this implementation
In example, AP will be 16:15:30 moment started to be transmitted using new frame structure.
304：AP uses the frame comprising determining M minimum frame to be communicated with STA.
In the present embodiment, AP is after sending frame structure notice, from 16:15:30 moment started to carry out using new frame structure
Transmission.
STA receives the notification information sent from AP, therefrom obtains AP by minimum number of frames M=2 of frame to be used,
And the change time is 16:15:30 moment, STA are ready to be communicated using new frame after the change time of notice.
305：AP obtains system design goal value.
AP periodicity monitoring system design desired values, the period can with but be not limited to be configured according to systematic parameter.
In the operational process of communication system, operator can adjust system design goal value according to network operation state,
In the present embodiment, operator is directed to network demand, updates expense desired value Overhead=0.02 for AP.
In the present embodiment, setting AP is periodically detected cycle T=5s of system design goal value.AP is detecting operator
After system design goal value is updated, updated system design goal value is obtained, and will be set according to updated system
Meter desired value determines the frame structure of frame.
306：AP determines the quantity M of minimum frame according to system design goal value.
According to desired value Overhead=0.02 of system design overhead, the numerical lower limits J of minimum frame need to meet formula（5）
J=Upper(GP/(L×T×Overhead))=Upper(5)=5 （5）
Therefore determine J=5, according to the value range of the quantity M of minimum frame, determine M=8, the frame of frame structure used in system
The allocation plan of a length of M × L × T+GP=8.1 millisecond, frame structure of the system in communication process using such frame length can control
Overhead realizes the design object of system design overhead.
307：AP sends notification information to STA.
AP sends notification information after frame structure is determined, to STA, and determining frame structure information is notified STA.
Specifically, notification information is informed for AP in the frame structure that STA is determined, the quantity of minimum frame is M=8.
Further, notification information carries the change time that AP begins to use new frame structure to be transmitted, this implementation
In example, AP will start to be transmitted using new frame structure after the 11st frame.
308：AP uses the frame comprising determining M minimum frame to be communicated with STA.
In the present embodiment, AP is carried out the moment using new frame structure after sending frame structure notice after the 11st frame
Transmission.
STA receives the notification information sent from AP, therefrom obtains AP by minimum number of frames M=8 of frame to be used,
And the change time, after the 11st frame, STA is ready to be communicated using new frame after the change time of notice.
In the operational process of communication system, first transmission point and second transmission point can be according in system design goals
Variation to Time Delay of Systems demand determines updated frame structure, obtains the quantity of minimum frame, completes reconfiguring for frame structure,
Realize the dynamic need of system design goal.
System determines frame structure, by adjusting frame structure using flexibly determining frame by system design goal value
Method can ensure the realization of time delay desired value or expense desired value, improve the flexibility ratio of system, realize system design goal.
Embodiment 4
A kind of communication device 40 is present embodiments provided, device 40 can be base station, relaying or access point etc., such as Fig. 4 institutes
Show, specifically includes as follows：
401：Determination unit, the quantity M for determining minimum frame according to system design goal value, wherein M are positive integer；
402：Transmit-Receive Unit, for sending notification information to second transmission point, notification information is for determining determination unit
The quantity M of minimum frame inform second transmission point, and communicated with second transmission point using the frame comprising M minimum frame.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
Minimum frame is determined according to the time span of the quantity for the subframe for including in system design time delay, minimum frame and subframe
Quantity M.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
The quantity of minimum frame is determined according to following formula：
M=Lower(Delay/(L×T))
Wherein, M is the quantity of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame,
T is the time span of subframe, and Lower is the operation mode for indicating downward rounding.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
The transformation of minimum frame is determined according to following formula：
K=Lower(Delay/(L×T))
Wherein, K is the transformation of minimum frame, and Delay designs time delay for system, and L is the subframe for including in minimum frame
Quantity, T are the time span of subframe, and Lower is the operation mode for indicating downward rounding；
Determine that the quantity M of minimum frame is the positive integer less than or equal to K.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
Determine that the quantity M of minimum frame is the maximum value for being less than or equal to K in value range.
As the specific descriptions to communication device 40 shown in Fig. 4, frame also includes at least one protection interval, and system designs mesh
Scale value is system design overhead, wherein 401 determination units can be further used for：
According to the quantity for the subframe for including in system design overhead, minimum frame, the time span of subframe and protection interval
Time span determines the quantity of minimum frame that frame includes.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
The quantity of minimum frame is determined according to following formula：
M=Upper(GP/(L×T×Overhead))
Wherein, M is the quantity of minimum frame, and GP is the time span of protection interval, and L is the number for the subframe that minimum frame includes
Amount, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
The numerical lower limits of minimum frame are determined according to following formula：
J=Upper(GP/(L×T×Overhead))
Wherein, J is the numerical lower limits of minimum frame, and GP is the time span of protection interval, and L is the subframe that minimum frame includes
Quantity, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up；
Determine that the quantity M of minimum frame is the positive integer more than or equal to J.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
Determine that the quantity M of minimum frame is the minimum value for being greater than or equal to J in value range.
As the specific descriptions to communication device 40 shown in Fig. 4, wherein 401 determination units can be further used for：
Monitoring system design desired value obtains updated system design goal if system design goal value has update
Value；And the quantity M of minimum frame is determined according to updated system design goal value.
As the specific descriptions to communication device 40 shown in Fig. 4, notification information also includes using the frame for including M minimum frame
The time communicated with second transmission point, wherein 402 Transmit-Receive Units can be further used for：
After arrival time, communicated with the second transmission point using the frame comprising M minimum frame.
Embodiment 5
A kind of communication device 50 is present embodiments provided, device 50 can be base station, relaying or access point etc., such as Fig. 5 institutes
Show, specifically includes as follows：
501：Processor, the quantity M for determining minimum frame according to system design goal value, wherein M are positive integer；
502：Transceiver, for sending notification information to second transmission point, notification information is used to determine processor most
The quantity M of small frame informs second transmission point, and is communicated with second transmission point using the frame comprising M minimum frame.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
Minimum frame is determined according to the time span of the quantity for the subframe for including in system design time delay, minimum frame and subframe
Quantity M.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
The quantity of minimum frame is determined according to following formula：
M=Lower(Delay/(L×T))
Wherein, M is the quantity of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame,
T is the time span of subframe, and Lower is the operation mode for indicating downward rounding.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
The transformation of minimum frame is determined according to following formula：
K=Lower(Delay/(L×T))
Wherein, K is the transformation of minimum frame, and Delay designs time delay for system, and L is the subframe for including in minimum frame
Quantity, T are the time span of subframe, and Lower is the operation mode for indicating downward rounding；
Determine that the quantity M of minimum frame is the positive integer less than or equal to K.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
Determine that the quantity M of minimum frame is the maximum value for being less than or equal to K in value range.
As the specific descriptions to communication device 50 shown in Fig. 5, frame also includes at least one protection interval, and system designs mesh
Scale value is system design overhead, wherein 501 processors can be further used for：
According to the quantity for the subframe for including in system design overhead, minimum frame, the time span of subframe and protection interval
Time span determines the quantity of minimum frame that frame includes.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
The quantity of minimum frame is determined according to following formula：
M=Upper(GP/(L×T×Overhead))
Wherein, M is the quantity of minimum frame, and GP is the time span of protection interval, and L is the number for the subframe that minimum frame includes
Amount, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
The numerical lower limits of minimum frame are determined according to following formula：
J=Upper(GP/(L×T×Overhead))
Wherein, J is the numerical lower limits of minimum frame, and GP is the time span of protection interval, and L is the subframe that minimum frame includes
Quantity, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up；
Determine that the quantity M of minimum frame is the positive integer more than or equal to J.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
Determine that the quantity M of minimum frame is the minimum value for being greater than or equal to J in value range.
As the specific descriptions to communication device 50 shown in Fig. 5, wherein 501 processors can be further used for：
Monitoring system design desired value obtains updated system design goal if system design goal value has update
Value；And the quantity M of minimum frame is determined according to updated system design goal value.
As the specific descriptions to communication device 50 shown in Fig. 5, notification information also includes using the frame for including M minimum frame
The time communicated with second transmission point, wherein 502 transceivers can be further used for：
After arrival time, communicated with the second transmission point using the frame comprising M minimum frame.
Other names mode may be used for name those skilled in the art of each parameter in the various embodiments described above, also at this
In scheme of the invention protection domain.
The present invention provides a kind of communication means and devices, and first transmission point obtains system design goal value, according to system
Design object value determines the quantity of minimum frame, and then determines frame structure, and is communicated using determining frame.By using dynamic
The method for adjusting frame structure, it is ensured that the realization of system design goal value improves the flexibility ratio of system, realizes that system designs mesh
Mark.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Help software that the mode of required common hardware is added to realize.Based on this understanding, the whole in technical scheme of the present invention or
Part steps are relevant hardware can be instructed to complete by program, and it is computer-readable that the program can be stored in one
It takes in storage medium, which includes the steps that the storage medium such as above method embodiment, such as when being executed：ROM/
RAM, magnetic disc, CD etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (18)
1. a kind of communication device, which is characterized in that described device includes：
The time of determination unit, quantity and the subframe for designing the subframe for including in time delay, minimum frame according to system is long
Degree determines the quantity M of the minimum frame, or the number according to the subframe for including in system design overhead, the minimum frame
Amount, the time span of the time span of the subframe and protection interval determine the quantity M of the minimum frame；Wherein M is just whole
Number；
Transmit-Receive Unit, for sending notification information to second transmission point, the notification information is for determining the determination unit
The quantity M of minimum frame inform second transmission point, and led to second transmission point using the frame comprising the M minimum frame
Letter.
2. the apparatus according to claim 1, which is characterized in that the determination unit is further used for：
The quantity of the minimum frame is determined according to following formula：
M=Lower (Delay/ (L × T))
Wherein, M is the quantity of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame, and T is
The time span of subframe, Lower are the operation mode for indicating downward rounding.
3. the apparatus according to claim 1, which is characterized in that the determination unit is further used for：
The transformation of the minimum frame is determined according to following formula：
K=Lower (Delay/ (L × T))
Wherein, K is the transformation of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame,
T is the time span of subframe, and Lower is the operation mode for indicating downward rounding；
Determine that the quantity M of the minimum frame is the positive integer less than or equal to K.
4. device according to claim 3, which is characterized in that the determination unit is further used for：
Determine that the quantity M of the minimum frame is the maximum value for being less than or equal to K in value range.
5. the apparatus according to claim 1, which is characterized in that the determination unit is further used for：
The quantity of the minimum frame is determined according to following formula：
M=Upper (GP/ (L × T × Overhead))
Wherein, M is the quantity of minimum frame, and GP is the time span of protection interval, and L is the quantity for the subframe that minimum frame includes, and T is
The time span of subframe, Overhead are system design overhead, and Upper is the operation mode for indicating to round up.
6. the apparatus according to claim 1, which is characterized in that the determination unit is further used for：
The numerical lower limits of the minimum frame are determined according to following formula：
J=Upper (GP/ (L × T × Overhead))
Wherein, J is the numerical lower limits of minimum frame, and GP is the time span of protection interval, and L is the number for the subframe that minimum frame includes
Amount, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up；
Determine that the quantity M of the minimum frame is the positive integer more than or equal to J.
7. device according to claim 6, which is characterized in that the determination unit is further used for：
Determine that the quantity M of the minimum frame is the minimum value for being greater than or equal to J in value range.
8. device according to any one of claims 1 to 7, which is characterized in that the determination unit is further used for：
Monitoring system design desired value obtains updated system design goal if the system design goal value has update
Value；Wherein, the system design goal is that the system designs time delay or the system design overhead.
9. the apparatus according to claim 1, which is characterized in that the notification information also includes that use is a most comprising the M
The time that the frame of small frame is communicated with the second transmission point；
The Transmit-Receive Unit is further used for：
After reaching the time, communicated with the second transmission point using the frame comprising the M minimum frame.
10. a kind of communication means, it is characterised in that：
First transmission point is true according to the quantity for the subframe for including in system design time delay, minimum frame and the time span of the subframe
The quantity M of the fixed minimum frame, or the quantity according to the subframe for including in system design overhead, the minimum frame, the son
The time span of frame and the time span of protection interval determine the quantity M of the minimum frame；Wherein M is positive integer；
First transmission point sends notification information to second transmission point, and the notification information is used for the number of the minimum frame of the determination
Amount M informs second transmission point；
First transmission point is communicated using the frame comprising the M minimum frame with second transmission point.
11. according to the method described in claim 10, it is characterized in that, first transmission point designs time delay, minimum frame according to system
In include the quantity of subframe and the time span of the subframe be specially to determine the quantity M of the minimum frame：
First transmission point determines the quantity of the minimum frame according to following formula：
M=Lower (Delay/ (L × T))
Wherein, M is the quantity of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame, and T is
The time span of subframe, Lower are the operation mode for indicating downward rounding.
12. according to the method described in claim 10, it is characterized in that, first transmission point designs time delay, minimum frame according to system
In include the quantity of subframe and the time span of the subframe be specially to determine the quantity M of the minimum frame：
First transmission point determines the transformation of the minimum frame according to following formula：
K=Lower (Delay/ (L × T))
Wherein, K is the transformation of minimum frame, and Delay designs time delay for system, and L is the quantity for the subframe for including in minimum frame,
T is the time span of subframe, and Lower is the operation mode for indicating downward rounding；
First transmission point determines that the quantity M of the minimum frame is the positive integer less than or equal to K.
13. according to the method for claim 12, which is characterized in that first transmission point determines that the quantity M of the minimum frame is
Positive integer less than or equal to K is specially：
First transmission point determines that the quantity M of the minimum frame is the maximum value for being less than or equal to K in value range.
14. according to the method described in claim 10, it is characterized in that, first transmission point according to system design overhead, it is described most
The time span of the quantity for the subframe for including in small frame, the time span of the subframe and protection interval determines the minimum frame
Quantity M be specially：
First transmission point determines the quantity of the minimum frame according to following formula：
M=Upper (GP/ (L × T × Overhead))
Wherein, M is the quantity of minimum frame, and GP is the time span of protection interval, and L is the quantity for the subframe that minimum frame includes, and T is
The time span of subframe, Overhead are system design overhead, and Upper is the operation mode for indicating to round up.
15. according to the method described in claim 10, it is characterized in that, first transmission point is according to system design overhead, minimum frame
In include the time span of the quantity of subframe, the time span of the subframe and protection interval determine the number of the minimum frame
Measuring M is specially：
First transmission point determines the numerical lower limits of the minimum frame according to following formula：
J=Upper (GP/ (L × T × Overhead))
Wherein, J is the numerical lower limits of minimum frame, and GP is the time span of protection interval, and L is the number for the subframe that minimum frame includes
Amount, T are the time span of subframe, and Overhead is system design overhead, and Upper is the operation mode for indicating to round up；
First transmission point determines that the quantity M of the minimum frame is the positive integer more than or equal to J.
16. according to the method for claim 15, which is characterized in that first transmission point determines that the quantity M of the minimum frame is
Positive integer more than or equal to K is specially：
First transmission point determines that the quantity M of the minimum frame is the minimum value for being greater than or equal to J in value range.
17. according to claim 10 to 16 any one of them method, which is characterized in that when first transmission point is designed according to system
Prolong, the quantity of subframe that includes in minimum frame and the time span of the subframe determine the quantity M of the minimum frame, or according to
Quantity, the time span of the subframe and the time of protection interval for the subframe for including in system design overhead, the minimum frame
Length come determine the minimum frame quantity M before further include：
First transmission point monitoring system design desired value obtains updated system if the system design goal value has update
System design object value；Wherein, the system design goal value is that the system designs time delay or the system design overhead.
18. according to the method described in claim 10, it is characterized in that, the notification information, which also includes use, includes the M
The time that the frame of minimum frame is communicated with second transmission point；
First transmission point is communicated specially using the frame comprising the M minimum frame with second transmission point：
First transmission point is carried out after reaching the time using the frame comprising the M minimum frame and the second transmission point
Communication.
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