CN102612156B - Duplex communication method based on time domain scheduling - Google Patents
Duplex communication method based on time domain scheduling Download PDFInfo
- Publication number
- CN102612156B CN102612156B CN201210016791.8A CN201210016791A CN102612156B CN 102612156 B CN102612156 B CN 102612156B CN 201210016791 A CN201210016791 A CN 201210016791A CN 102612156 B CN102612156 B CN 102612156B
- Authority
- CN
- China
- Prior art keywords
- equipment
- launched
- time slot
- communicator
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a duplex communication method based on time domain scheduling. The duplex communication method comprises the following steps: each time slot is provided with three duplex mode options: (1) a communication device transmits a signal to terminal equipment, (2) the communication device receives signal from the terminal equipment, and (3) the communication device and the terminal equipment work at a same-frequency and simultaneous duplex mode; and the system carries out time domain scheduling to dynamically allocate the duplex modes of each time slot and the allocated terminal equipment working at the same-frequency simultaneously according to the information of each equipment obtained by the communication device, such as transmission request, service quality grade, magnitude of data block and channel quality, as well as the interference level and the interference eliminating capability of the communication device. According to the invention, the duplex mode of each time slot can be determined by adopting the dynamic time domain scheduling method so as to flexibly allocate time slots; and dynamic scheduling can be realized by using the information of interference eliminating capability and so on, thereby effectively reducing interference of a transmitting antenna to a receiving antenna of the communication device while improving the resource utilization rate.
Description
Technical field
The invention belongs to wireless communication field, be specifically related to a kind of based on time domain scheduling duplex communication method.
Background technology
A basic task of wireless communication system is set up and keep the communication link between transmitting-receiving node, realizes the transmitted in both directions of communication data.
Traditional tdd communication systems, adopts the different time to receive and dispatch, thereby between transceiver channel, is time-division quadrature.Usually, in a frame or subframe, channel is divided into again several time slots, the time slot of each activation or be transmission time slot or for receiving slot.
The structure of the frame of a traditional tdd communication systems as shown in Figure 1.In this example, each frame is divided into eight time slots, wherein front four time slots are for the communicator (Centroid of communication network, as the base station in cellular network, the access point in WLAN (wireless local area network) etc.) to the terminal equipment (terminal node of communication network, as mobile phone etc.) transmit, rear four time slots receive signal for communicator from terminal equipment.Because in traditional tdd communication systems, in each time slot, signal can only one-way transmission, so resource utilization is lower.And as shown in Figure 1, the dual-mode of each time slot is set, or transmitting or reception.
In recent years, have researcher to propose with the concept of transmitting-receiving simultaneously frequently, the method utilization is disturbed and is eliminated and can realize on the channel of time and receiving and transmitting at all same frequencys, but the interference between transmitting-receiving is the key factor that affects this systematic function.In the situation that disturbing desirable elimination, the same capacity of Simultaneous Transmission And Receiving System is frequently greater than traditional tdd communication systems; But, in the situation that interference cannot be eliminated completely, the ability that relatively depends on interference elimination of both capacity, and disturb the ability of eliminating relevant with several factors, in real system, may be dynamic change.
Summary of the invention
The present invention propose a kind of based on time domain scheduling duplex communication method, combine the advantage of traditional time division duplex and the same duplex of while frequently, to improve resource utilization, and utilize information such as disturbing elimination ability to carry out dynamic dispatching, effectively to reduce the impact of disturbing between the lower transmitting-receiving of duplex simultaneously with frequently.
The object of the invention is to propose a kind of based on time domain scheduling duplex communication method.
Of the present invention based on time domain scheduling duplex communication method comprise:
The dual-mode of each time slot has three kinds of selections: 1. communicator transmits to terminal equipment, 2. communicator receives signal from terminal equipment, 3. communicator transmits and on this time slot, from terminal equipment, receives signal simultaneously to terminal equipment, with frequency dual-mode simultaneously;
Ability is eliminated in the interference of the information such as the size of the transmission request of each equipment that system is known according to communicator, service quality rating, data block, channel quality and interference level and communicator self, time domain scheduling dynamically distribute the dual-mode of each time slot and terminal equipment that the same frequency that distributes is worked simultaneously.
Because transmitting antenna and the reception antenna of communicator may be with frequently work simultaneously, therefore, transmitting of communicator can cause stronger interference to the reception signal of himself, time domain scheduling need to consider the information such as interference elimination ability of interference level and communicator self, when improving resource utilization, also effectively reduce the interference of communicator transmitting antenna to reception antenna.
Time domain scheduling in duplex communication method of the present invention is that each frame is once dispatched, time domain scheduling method comprise the following steps:
1) when start each dispatching cycle, system needs the terminal equipment that communicator transmits to be initialized as cluster tool to be launched by all, equipment to be launched comprises that equipment 1 is to equipment N, and all terminal equipments that need communicator to receive signal are initialized as and treat receiving equipment set, treat that receiving equipment comprises that equipment N+1 is to equipment M, wherein N and M are natural number, and M > N;
2) communicator is by equipment to be launched with treat that the sum of receiving equipment compares with the sum of current available time slot in this dispatching cycle:
(a) if equipment to be launched and treat that the sum of receiving equipment is not more than the sum of the current available time slot in this dispatching cycle, the dispatching method of dispatching method now and traditional tdd communication systems is identical, all terminal equipments are dispensed on different time slots, after adopting the dispatching method of traditional tdd communication systems, this finishing scheduling
(b) if equipment to be launched and treat that the sum of receiving equipment is greater than the sum of the current available time slot in this dispatching cycle, enters step 3);
3) selected equipment j (j value is from 1 to N) from cluster tool to be launched, and from treat receiving equipment set selected equipment k (k value is from N+1 to M), the reception signal of communicator is through disturbing Signal to Interference plus Noise Ratio and the predefined threshold after eliminating, and threshold value is by treating the receiving sensitivity of receiving equipment and treating that the service quality that receiving equipment requires determines:
(i) if equipment k and equipment j group to be launched to after, communicator receives signal through disturbing the Signal to Interference plus Noise Ratio after eliminating to be greater than predefined threshold value, and equipment j and equipment k group, to success, can be used as the same frequency a pair of terminal equipment of transmitting-receiving simultaneously, enter step 4)
(ii) if not until receiving equipment and equipment j group to after meet and receive Signal to Interference plus Noise Ratio requirement, group is to failure, select the next equipment in cluster tool to be launched, be equipment j+1, repeating step 3), until there is an equipment to be launched and one, treat that receiving equipment group, to success, enters step 4)
(iii) if traveled through after all cluster tool to be launched, there is no equipment to be launched and treat that receiving equipment group is to success, explanation can not be applied with frequency dual-mode simultaneously, now dispatching method is identical with traditional tdd communication systems, after adopting traditional dispatching method, this finishing scheduling;
4) equipment j to be launched is with after receiving equipment k group is to success, distribute to available time slot of this pair of equipment, this time slot will adopt with frequency dual-mode simultaneously, be that communicator transmits and on this time slot, from equipment k, receives signal simultaneously to equipment j, and by equipment j and equipment k respectively from cluster tool to be launched with treat to remove receiving equipment set, return to step 2), until all available time slot in dispatching cycle all distribute, this finishing scheduling.
The dispatching method of traditional tdd communication systems of mentioning in above-mentioned steps, can comprise the scheduling modes such as poll and equitable proportion; The method that the interference of mentioning in above-mentioned steps is eliminated, comprises the methods such as traditional Interference Cancellation and interference and insulation.Beneficial effect of the present invention:
Time domain dispatching method of the present invention, its basic feature be system according to the transmitting antenna of communicator the interference level to reception antenna, and disturb the information such as elimination ability, dynamically carry out selection and the equipment group pair of dual-mode.The present invention adopts dynamic time domain dispatching method to determine the dual-mode of each time slot, can carry out neatly the distribution of time slot; Utilize information such as disturbing elimination ability to carry out dynamic dispatching, thereby when improving resource utilization, also effectively reduce the interference of communicator transmitting antenna to reception antenna.
Accompanying drawing explanation
Fig. 1 is the structural representation of the frame of traditional tdd communication systems;
Fig. 2 be of the present invention based on time domain scheduling the structural representation of frame of duplex communication method;
Fig. 3 be of the present invention based on time domain scheduling the structural representation of system of duplex communication method;
Fig. 4 is the schematic diagram in embodiments of the invention, available time slot being distributed;
Fig. 5 is the scheduling result of embodiments of the invention.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, embodiments of the present invention are described in detail.
As shown in Figure 2, the dual-mode of each time slot is dynamic, according to real-time channel situation and interference elimination ability, carries out dynamically time slot allocation.The dual-mode of each time slot has three kinds of selections: 1. communicator transmits to terminal equipment, 2. communicator receives signal from terminal equipment, 3. communicator transmits and on this time slot, from terminal equipment, receives signal simultaneously to terminal equipment, with frequency dual-mode simultaneously.
Fig. 3 be of the present invention based on time domain scheduling the structural representation of system of duplex communication method, as shown in Figure 3, when start each dispatching cycle, system needs the terminal equipment that communicator transmits to be initialized as cluster tool to be launched by all, equipment to be launched comprises that equipment 1 is to equipment N, and all terminal equipments that need communicator to receive signal are initialized as and treat receiving equipment set, treat that receiving equipment comprises that equipment N+1 is to equipment M, wherein N and M are natural number, and M > N.
The schematic diagram that embodiments of the invention distribute available time slot, as shown in Figure 4.
Suppose when start dispatching cycle in cluster tool to be launched, have four equipment to be launched, equipment 1,2,3 and 4, and treating has two to treat receiving equipment in receiving equipment set, i.e. equipment 5 and 6.Supposing has four available time slot in this dispatching cycle, the time slot not namely being assigned with, and owing to always having six equipment, so some time slot need to adopt with frequency dual-mode simultaneously.
First select the equipment 1 in cluster tool to be launched, suppose to treat 1 group of equipment 5 in receiving equipment set and equipment to after, receive signal through disturbing the Signal to Interference plus Noise Ratio after processing to be less than threshold value, continue to select to treat the equipment 6 in receiving equipment set, and 1 group of equipment 6 and equipment to after, receive signal through disturbing the Signal to Interference plus Noise Ratio after eliminating to be greater than threshold value, 6 groups of equipment 1 and equipment are to success, and being distributed in available time slot 1, equipment 1 and equipment 6 are respectively from cluster tool to be launched and treat to remove receiving equipment set.
The group of finishing equipment 1 and equipment 6 is to after success distributing time slot and remove, cluster tool to be launched and treat always to have in receiving equipment set four equipment, and the sum of current available time slot only has three, therefore also need to proceed the equipment group pair with frequency while duplex.
Then select the equipment 2 in cluster tool to be launched, suppose to treat 2 groups of equipment 5 in receiving equipment set and equipment to after, receive signal through disturbing the Signal to Interference plus Noise Ratio after processing to be less than threshold value, thus equipment 2 and equipment 5 can not organize right.Select again the equipment 3 in cluster tool to be launched, suppose to treat 3 groups of equipment 5 in receiving equipment set and equipment to after, receive signal through disturbing the Signal to Interference plus Noise Ratio after processing to be greater than threshold value, therefore 5 groups of equipment 3 and equipment are to success, and distribute to time slot 2, equipment 3 and equipment 5 are respectively from cluster tool to be launched and treat to remove receiving equipment set.
The group of finishing equipment 3 and equipment 5 is to after success distributing time slot and remove, cluster tool to be launched and treat to only have two equipment in receiving equipment set, and the sum of current available time slot just in time has two, identical with the dispatching method of traditional tdd communication systems, time slot 3 and time slot 4 are distributed to respectively equipment 2 and equipment 4.
All available time slot in this dispatching cycle are all distributed, so this finishing scheduling.
Finally it should be noted that, the object of publicizing and implementing mode is to help further to understand the present invention, but it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various substitutions and modifications are all possible.Therefore, the present invention should not be limited to the disclosed content of embodiment, and the scope that the scope of protection of present invention defines with claims is as the criterion.
Claims (4)
- Based on time domain scheduling a duplex communication method, it is characterized in that, described duplex communication method comprises:The dual-mode of each time slot has three kinds of selections: 1. communicator transmits to terminal equipment, 2. communicator receives signal from terminal equipment, 3. communicator transmits and on this time slot, from terminal equipment, receives signal simultaneously to terminal equipment, with frequency dual-mode simultaneously;Ability is eliminated in the interference of the transmission request of each equipment that system is known according to communicator, service quality rating, the size of data block, the information of channel quality and interference level and communicator self, time domain scheduling dynamically distribute the dual-mode of each time slot and terminal equipment that the same frequency that distributes is worked simultaneously;When described, domain scheduling is that each frame is once dispatched, and when described, the method for domain scheduling comprises the following steps:1) when start each dispatching cycle, system needs the terminal equipment that communicator transmits to be initialized as cluster tool to be launched by all, equipment to be launched comprises that equipment 1 is to equipment N, and all terminal equipments that need communicator to receive signal are initialized as and treat receiving equipment set, treat that receiving equipment comprises that equipment N+1 is to equipment M, wherein N and M are natural number, and M>N;2) communicator is by equipment to be launched with treat that the sum of receiving equipment compares with the sum of current available time slot in this dispatching cycle:(a) if equipment to be launched and treat that the sum of receiving equipment is not more than the sum of the current available time slot in this dispatching cycle, the dispatching method of dispatching method now and traditional tdd communication systems is identical, all terminal equipments are dispensed on different time slots, after adopting the dispatching method of traditional tdd communication systems, this finishing scheduling(b) if equipment to be launched and treat that the sum of receiving equipment is greater than the sum of the current available time slot in this dispatching cycle, enters step 3);3) selected equipment j from cluster tool to be launched, j value is from 1 to N, and from treat receiving equipment set selected equipment k, k value is from N+1 to M, the reception signal of communicator is through disturbing Signal to Interference plus Noise Ratio and the predefined threshold after eliminating:(i) if equipment k and equipment j group to be launched to after, communicator receives signal through disturbing the Signal to Interference plus Noise Ratio after eliminating to be greater than predefined threshold value, and equipment j and equipment k group, to success, can be used as the same frequency a pair of terminal equipment of transmitting-receiving simultaneously, enter step 4)(ii) if not until receiving equipment and equipment j group to after meet and receive Signal to Interference plus Noise Ratio requirement, group is to failure, select the next equipment in cluster tool to be launched, be equipment j+1, repeating step 3), until there is an equipment to be launched and one, treat that receiving equipment group, to success, enters step 4)(iii) if traveled through after all cluster tool to be launched, there is no equipment to be launched and treat that receiving equipment group is to success, explanation can not be applied with frequency dual-mode simultaneously, now dispatching method is identical with traditional tdd communication systems, after adopting traditional dispatching method, this finishing scheduling;4) equipment j to be launched is with after receiving equipment k group is to success, distribute to available time slot of this pair of equipment, this time slot will adopt with frequency dual-mode simultaneously, be that communicator transmits and on this time slot, from equipment k, receives signal simultaneously to equipment j, and by equipment j and equipment k respectively from cluster tool to be launched with treat to remove receiving equipment set, return to step 2), until all available time slot in dispatching cycle all distribute, this finishing scheduling.
- 2. duplex communication method as claimed in claim 1, is characterized in that, described threshold value is by treating the receiving sensitivity of receiving equipment and treating that the service quality that receiving equipment requires determines.
- 3. duplex communication method as claimed in claim 1, is characterized in that, the dispatching method of described traditional tdd communication systems comprises the scheduling mode of poll and equitable proportion.
- 4. duplex communication method as claimed in claim 1, is characterized in that, the method that described interference is eliminated comprises the method for traditional Interference Cancellation and interference and insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210016791.8A CN102612156B (en) | 2012-01-18 | 2012-01-18 | Duplex communication method based on time domain scheduling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210016791.8A CN102612156B (en) | 2012-01-18 | 2012-01-18 | Duplex communication method based on time domain scheduling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102612156A CN102612156A (en) | 2012-07-25 |
| CN102612156B true CN102612156B (en) | 2014-09-24 |
Family
ID=46529224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210016791.8A Active CN102612156B (en) | 2012-01-18 | 2012-01-18 | Duplex communication method based on time domain scheduling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102612156B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781181B (en) * | 2012-10-22 | 2017-05-24 | 中国移动通信集团公司 | User scheduling method and apparatus, system and base station in TDD system |
| EP3026969B1 (en) * | 2013-08-27 | 2017-10-11 | Huawei Technologies Co., Ltd. | Adaptive duplex mode selection |
| CN104168236B (en) * | 2014-07-31 | 2018-04-06 | 上海翎沃电子科技有限公司 | A kind of method with the full-time gap transmitted in both directions of frequency |
| CN106231673A (en) * | 2016-07-22 | 2016-12-14 | 中国船舶重工集团公司第七二四研究所 | A kind of multi-mode phased-array radar group-net communication method for managing resource |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2376602B (en) * | 2001-06-15 | 2003-06-18 | Motorola Inc | A method for providing a communication channel in time division duplexing (TDD) mode between a TDD mobile and a TDD base station |
| CN100347971C (en) * | 2003-11-28 | 2007-11-07 | 大唐移动通信设备有限公司 | Method for implementing frequency resource dynamic optimization in TDD mobile communication system |
| CN101141235B (en) * | 2006-09-08 | 2011-11-09 | 北京大学 | Interference canceling method for co-frequency co-time slot duplexing |
| CN101754477B (en) * | 2008-11-28 | 2012-06-20 | 北京大学 | Communication system volume expansion method |
| CN101631355B (en) * | 2009-08-13 | 2011-05-25 | 北京邮电大学 | Selection method of modulation encoding way for TD-HSPA+multi-user MIMO system |
-
2012
- 2012-01-18 CN CN201210016791.8A patent/CN102612156B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102612156A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101778428B (en) | Method, system and device for determining time frequency resource | |
| CN102769917B (en) | Combinational iteration optimization-based resource allocation method for device-to-device system | |
| CN104469951B (en) | A kind of method, apparatus and system of resource allocation | |
| CN104519577A (en) | Method and system for communication resource management, and device | |
| CN101990217B (en) | Method, system and device for sending uplink pilot time slot interference | |
| CN102612156B (en) | Duplex communication method based on time domain scheduling | |
| CN102595627B (en) | Duplex communication method based on frequency domain dispatching | |
| CN103298118A (en) | Indication and confirmation method and device for time-frequency resource | |
| CN103716121A (en) | Method and equipment for determining ePDCCH-based downlink control information | |
| CN105553608A (en) | Data transmission method, device and system based on non-orthogonal multi-access mode | |
| CN107484175A (en) | A kind of data transmission method and its base station | |
| CN105263151A (en) | Signal detection method and equipment | |
| CN103298119A (en) | Indication and confirmation method and device for time-frequency resource | |
| CN106060943A (en) | Random access method for multi-antenna wireless communication system | |
| US20090002235A1 (en) | Radio Communication System, Transmission Apparatus, Transmission Method, Program and Recording Medium | |
| CN102480774B (en) | Method for eliminating system interference, apparatus thereof, and terminal thereof | |
| CN103139291B (en) | A kind of location application server obtains the method for terminal gps data | |
| CN105245265A (en) | User service mode selection method under 3D beams, pilot frequency information transmitting method and pilot frequency information transmitting device | |
| CN105637960B (en) | A kind of distribution method and device of device-to-device transfer resource | |
| CN104753658B (en) | Data transmission method and device a kind of while in co-channel full duplex system | |
| CN102026382A (en) | Method and device for allocating resources in space division multiple access system | |
| CN103188809B (en) | A kind of freely communication system and the method for channel allocation thereof of duplex | |
| CN104170309A (en) | Resource management method and resource management device | |
| CN109348511B (en) | Method and device for allocating baseband resources | |
| CN103634919B (en) | Household base station and method for distributing resources for same on basis of interference coordination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEISITAI (BEIJING) INFORMATION TECHNOLOGY CO., LTD Free format text: FORMER OWNER: BEIJING UNIV. Effective date: 20150508 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100871 HAIDIAN, BEIJING TO: 100080 HAIDIAN, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150508 Address after: 100080 Beijing Haidian District Zhongguancun street, No. 6, layer 633-04, No. 11 Patentee after: Micro (Beijing) Information Technology Co., Ltd. Address before: 100871 Beijing the Summer Palace Road, Haidian District, No. 5 Patentee before: Peking University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161221 Address after: 100041 Beijing, Shijingshan District Xing Xing Road, No. 30 hospital, building 4, No. 17, No. 47 Patentee after: Beijing wide Technology Co., Ltd. Address before: 100080 Beijing Haidian District Zhongguancun street, No. 6, layer 633-04, No. 11 Patentee before: Micro (Beijing) Information Technology Co., Ltd. |