CN108574962B - Data transmitting and receiving method and device - Google Patents
Data transmitting and receiving method and device Download PDFInfo
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- CN108574962B CN108574962B CN201710138952.3A CN201710138952A CN108574962B CN 108574962 B CN108574962 B CN 108574962B CN 201710138952 A CN201710138952 A CN 201710138952A CN 108574962 B CN108574962 B CN 108574962B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
- H04W28/0263—Traffic management, e.g. flow control or congestion control per individual bearer or channel involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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Abstract
The invention discloses a data sending and receiving method and device, and belongs to the technical field of communication. The method comprises the following steps: establishing n carriers, wherein each carrier is divided into m first time slots, and the first time slots contain data to be sent; dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to priority in the n carriers; filling the data to be sent of m first time slots in the first carrier to be sent into m second time slots correspondingly; and transmitting data by using the completely filled m second time slots. The invention divides each carrier in the multi-carrier into m first time slots, and when data occurs, the single carrier containing m second time slots is used for correspondingly filling the data to be sent in a certain carrier in the multi-carrier, and when the single carrier containing m second time slots is completely filled, the data is sent, thereby ensuring that the spectrum efficiency of limited frequency resources is effectively utilized, and improving the bandwidth utilization rate.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data sending and receiving method and apparatus.
Background
In a mobile communication system, in order to transmit different data, a multi-carrier method is generally adopted to transmit data, in the multi-carrier data transmission technology, data to be transmitted is allocated to time slots with smaller bandwidths, for a certain carrier, the time slots in the certain carrier are not all allocated to the data, and for some time slots which are not allocated to the data, the data are not effectively utilized in the data transmission process, the spectrum efficiency of limited frequency resources is reduced, and the bandwidth utilization rate is not high.
Disclosure of Invention
In view of this, the present invention provides a data transmitting and receiving method and apparatus, so as to solve the problems of low spectrum efficiency and low bandwidth utilization rate of multi-carrier transmission data in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
according to an aspect of the present invention, a data transmitting method is provided, including:
establishing n carriers, wherein each carrier is divided into m first time slots, each first time slot contains data to be sent, and both n and m are positive integers greater than or equal to 2;
dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to priority in the n carriers;
filling the data to be sent of m first time slots in the first carrier to be sent into m second time slots correspondingly;
and transmitting data by using the completely filled m second time slots.
Preferably, the data transmission method further includes:
if a blank time slot exists in the m second time slots, continuously selecting a carrier as a second carrier to be sent in the n carriers according to the priority;
and correspondingly filling the data to be sent of m first time slots in the second carrier wave to be sent into blank time slots in m second time slots.
Preferably, the data transmission method further includes:
and forming a mapping relation table by the data to be sent in the completely filled m second time slots and the first time slots in the n carriers, and sending the mapping relation table.
Preferably, the priority is: the data quantity to be sent contained in the m first time slots in the carrier is arranged from high to low.
According to another aspect of the present invention, there is provided a data receiving method, including:
acquiring data through m second time slots, wherein the m second time slots are time slots divided by a frame at the moment t of sending the data, and m is a positive integer greater than or equal to 2;
and when the mapping relation table is received, inversely mapping the data to the carrier wave according to the mapping relation table.
According to still another aspect of the present invention, there is provided a data transmission apparatus including:
the multi-carrier establishing unit is used for establishing n carriers, each carrier is divided into m first time slots, the first time slots contain data to be sent, and both n and m are positive integers greater than or equal to 2;
the first selection unit is used for dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to priority in the n carriers;
a first filling unit, configured to correspondingly fill data to be sent in the m first time slots in a first carrier to be sent into m second time slots; and
and a data transmission unit for transmitting data using the completely filled m second slots.
Preferably, the data transmission apparatus further includes:
a second selecting unit, configured to, if there is a blank time slot in the m second time slots, continue to select a carrier as a second to-be-sent carrier in the n carriers according to the priority; and
and the second filling unit is used for correspondingly filling the data to be sent of the m first time slots in the second carrier wave to be sent into blank time slots in the m second time slots.
Preferably, the data transmission apparatus further includes:
and the mapping relation forming unit is used for forming a mapping relation table by the data to be sent in the completely filled m second time slots and the first time slots in the n carriers and sending the mapping relation table.
Preferably, the priority is: the data quantity to be sent contained in the m first time slots in the carrier is arranged from high to low.
According to still another aspect of the present invention, there is provided a data receiving apparatus including:
a data acquisition unit configured to acquire data through m second slots, which are slots divided by a frame at time t when the data is transmitted, where m is a positive integer equal to or greater than 2; and
and the inverse mapping unit is used for inversely mapping the data to the carrier wave according to the mapping relation table when receiving the mapping relation table.
The data transmitting and receiving method and device divide each carrier in a multi-carrier into m first time slots, correspondingly fill data to be transmitted in a certain carrier in the multi-carrier by using a single carrier comprising m second time slots when the data are generated, and transmit the data when the single carrier comprising the m second time slots is completely filled, thereby ensuring that the spectrum efficiency of limited frequency resources is effectively utilized and the bandwidth utilization rate is improved.
Drawings
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of first time slot division of each carrier according to an embodiment of the present invention;
fig. 3 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 4 is a flowchart of a data receiving method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a data receiving apparatus according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 shows a flowchart of a data transmission method according to an embodiment of the present invention, where the method includes the following steps:
s101, n carriers are established, each carrier is divided into m first time slots, the first time slots contain data to be sent, and both n and m are positive integers which are more than or equal to 2.
In the embodiment of the present invention, when performing communication between a device a and a device B, an architecture of a communication network needs to be established in advance, fig. 2 shows a schematic diagram of first time slot division of each carrier in the embodiment of the present invention, and establishment C is used for establishing 1 、C 2 、C 3 、……、C n N carriers transmit data, each carrier being divided into m first time slots, whereby C 1 The first time slot of (c) is noted as: d 11 、D 12 、D 13 、……、D 1m ，C 2 The first slot of (c) is noted as:
D 21 、D 22 、D 23 、……、D 2m ，……，C n the first time slot of (c) is noted as: d n1 、D n2 、D n3 、……、D nm Wherein, C 1 First time slot D of 11 、C 2 First time slot D of 21 … …, and C n First time slot D of n1 Time slots at the same time, i.e. only D can be transmitted at the same time 11 、D 21 、……、D n1 One time slot in; likewise, C 1 First time slot D of 12 、C 2 First time slot D of 22 … …, and C n First time slot D of n2 Is a time slot of the same time, … …, C 1 First time slot D of 1m 、C 2 First time slot D of 2m … …, and C n First time slot D of nm Are time slots at the same time. By establishing a multi-carrier network communication architecture and numbering the first time slot in each carrier, the stability of data transmission is ensured, and the error rate in the data transmission process is reduced.
S102, dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to the priority from n carriers.
In the embodiment of the present invention, device a sends data to device B as a sending end, and divides a frame at a certain time t when device a sends data into m second time slots, where the m second time slots areThe time slot can be written as: e 1 、E 2 、E 3 、……、E m . When sending data, according to the priority, select a carrier from n carriers, and use the carrier as the first carrier to be sent, e.g. select carrier C in fig. 2 1 As the first carrier to be transmitted. Since valid data may not exist in the first time slot of each carrier, and may be a blank time slot, in order to reduce the data operation amount, carriers with a larger amount of data to be sent included in the first time slot need to be preferentially selected, where the priority is: and arranging the data to be transmitted from high to low according to the data quantity contained in the m first time slots in the carrier.
S103, correspondingly filling the data to be transmitted of the m first time slots in the first carrier to be transmitted into the m second time slots.
In the embodiment of the invention, after a carrier is selected from n carriers according to the priority, the data to be sent in the first time slot of the selected carrier is correspondingly filled into the second time slot. For example, in the first time slot division of each carrier shown in fig. 2, carrier C is selected 1 After being the first carrier to be transmitted, assume that carrier C 1 The first time slot containing data to be transmitted is the first time slot D 11 、D 12 、……、D 1m The first time slot D 11 、D 12 、……、D 1m Corresponding filling of data to be sent in the second time slot E 1 、E 2 、E 3 、……、E m Correspondingly, the first time slot D 11 Filling the data to be sent to the second time slot E correspondingly 1 First time slot D 12 Filling the data to be sent to the second time slot E correspondingly 2 … …, first time slot D 1m Filling the data to be sent to the second time slot E correspondingly m Thus, the m second slots are all completely filled. And the data in the multiple carriers are sent by using m second time slots, so that the data sending efficiency and the bandwidth utilization rate are improved, and unnecessary waste of the bandwidth is avoided.
And S104, transmitting the data by using the completely filled m second time slots.
In the embodiment of the present invention, device a serves as a sending end to send data to device B, and sends data when m second time slots are completely filled. When the m second time slots are completely filled, the data are transmitted, so that the bandwidth can be completely utilized when the data are transmitted, and the transmission efficiency is improved.
Fig. 3 shows a flowchart of a data transmission method according to an embodiment of the present invention, where the method includes the following steps:
s301, n carriers are established, each carrier is divided into m first time slots, and the first time slots contain data to be sent, wherein n and m are positive integers which are more than or equal to 2.
In the embodiment of the invention, the architecture of the communication network is established in advance, and C is established 1 、C 2 、C 3 、……、C n N carriers transmit data, each carrier being divided into m first time slots, whereby C 1 The first time slot of (c) is noted as: d 11 、D 12 、D 13 、……、D 1m ，C 2 The first time slot of (c) is noted as: d 21 、D 22 、D 23 、……、D 2m ，……，C n The first time slot of (c) is noted as: d n1 、D n2 、D n3 、……、D nm . By establishing a multi-carrier network communication architecture and numbering the first time slot in each carrier, the stability of data transmission is ensured, and the error rate in the data transmission process is reduced.
S302, dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to priority from n carriers.
In this embodiment of the present invention, a device a, as a sending end, sends data to a device B, and divides a frame at a certain time t when the device a sends data into m second time slots, where the m second time slots may be denoted as: e 1 、E 2 、E 3 、……、E m . When data is sent, a carrier is selected from the n carriers according to the priority, and the carrier is used as a first carrier to be sent.
S303, correspondingly filling the m first time slots of the first carrier to be transmitted with the data to be transmitted in m second time slots.
In the embodiment of the present invention, after selecting a carrier from n carriers according to the priority, the data to be sent in the first time slot of the selected carrier is correspondingly filled into the second time slot, for example, in fig. 2, the carrier C is selected 1 After the first carrier to be transmitted, valid data may not be present in the first time slot of each carrier, and may be a blank time slot 1 The first time slot containing data to be transmitted is the first time slot D 11 、D 12 、D 18 And D 1m The other first time slot D 13 -D 17 And D 19 -D 1m-1 Is a blank time slot, and the first time slot D 11 、D 12 、D 18 And D 1m Filling the data to be sent to the second time slot E correspondingly 1 、E 2 、E 8 And E m Correspondingly, the first time slot D 11 Filling the data to be sent to the second time slot E correspondingly 1 First time slot D 12 Filling the data to be sent to the second time slot E correspondingly 2 First time slot D 18 Filling the data to be sent to the second time slot E correspondingly 8 And a first time slot D 1m Corresponding filling of data to be sent in the second time slot E m At this time, E in m second slots 3 -E 7 And E 9 -E m-1 Are unfilled empty slots.
And S304, if blank time slots exist in the m second time slots, continuously selecting a carrier as a second carrier to be sent in the n carriers according to the priority.
In the embodiment of the present invention, after the first carrier to be transmitted is selected for filling, since the first carrier to be transmitted includes empty slots, empty slots exist in the second slots after filling, for example, E in m second slots 3 -E 7 And E 9 -E m-1 It is an unfilled empty timeslot, at this time, a carrier is continuously selected as a second to-be-transmitted carrier according to the priority, it should be noted that, when a first to-be-transmitted carrier is selected for padding,and when the m second time slots have blank time slots, one carrier is continuously selected from the n carriers as a second carrier to be transmitted according to the priority.
S305, correspondingly filling the data to be sent of the m first time slots in the second carrier to be sent into the blank time slots in the m second time slots.
In the embodiment of the present invention, for example, the second carrier C to be transmitted is selected 2 The first time slot containing data to be transmitted is the first time slot D 23 -D 2m The other first time slot D 21 And D 22 Is a blank time slot, and transmits the second carrier C to be transmitted 2 First time slot D of 23 -D 27 And D 29 -D 2m-1 Corresponding filling of data to be sent in the second time slot E 3 -E 7 And E 9 -E m-1 Correspondingly, the first time slot D 23 -D 27 Filling the data to be sent to the second time slot E correspondingly 3 -E 7 First time slot D 29 -D 2m-1 Filling the data to be sent to the second time slot E correspondingly 9 -E m-1 Whereby the m second time slots are completely filled and carrier C 2 The first time slot which is not filled to the second time slot and contains data to be sent is D 28 And D 2m 。
And S306, transmitting the data by using the completely filled m second time slots.
In the embodiment of the present invention, device a serves as a sending end to send data to device B, and sends data when m second time slots are completely filled.
S307, forming a mapping relation table by the data to be sent in the completely filled m second time slots and the first time slots in the n carriers, and sending the mapping relation table.
In the embodiment of the invention, the data is sent after the m second time slots are completely filled, and the data to be sent in the m second time slots which are completely filled and the data in the n carriers are sentThe first time slot forms a mapping relation table, so that after the receiving end receives the data, the receiving end can inversely map the data in the second time slot to the corresponding carrier. For example, the second time slot E of the m second time slots 1 Mapping a first time slot D 11 Second time slot E 2 Mapping a first time slot D 12 Second time slot E 3 -E 7 Mapping the first time slots D in sequence 23 -D 27 Second time slot E 8 Mapping a first time slot D 18 Second time slot E 9 -E m-1 Mapping the first time slots D in sequence 29 -D 2m-1 Second time slot E m Mapping a first time slot D 1m 。
In the embodiment of the invention, each carrier in a multi-carrier is divided into m first time slots, when data occurs, a single carrier containing m second time slots is used for correspondingly filling data to be sent in a certain carrier in the multi-carrier, when the second time slots are not completely filled, the carrier is selected again for repeated filling, and when the single carrier containing m second time slots is completely filled, the data is sent, so that the spectrum efficiency of limited frequency resources is effectively utilized, the data sending efficiency is improved, and the bandwidth utilization rate is improved.
Fig. 4 shows a flow chart of a data receiving method according to an embodiment of the present invention, which includes the following steps:
s401, acquiring data through m second time slots, where m is a positive integer greater than or equal to 2, and the m second time slots are time slots divided by a frame at a time t when the data is transmitted.
In the embodiment of the present invention, the data in the m second time slots is data filled by the data to be transmitted in the first time slot of the n carriers, where the n carriers are C 1 、C 2 、C 3 、……、C n The data in the m second time slots may be all data of one carrier of the n carriers, or may be partial data of multiple carriers of the n carriers.
S402, when the mapping relation table is received, the data is inversely mapped to the carrier wave according to the mapping relation table.
In the embodiment of the inventionWhen the receiving end receives the mapping relation table, the receiving end inversely maps the data to the carrier wave according to the mapping relation table, for example, the mapping relation table is: second time slot E 1 Mapping a first time slot D 11 Second time slot E 2 Mapping a first time slot D 12 Second time slot E 3 -E 7 Mapping the first time slots D in sequence 23 -D 27 Second time slot E 8 Mapping a first time slot D 18 Second time slot E 9 -E m-1 Mapping the first time slots D in sequence 29 -D 2m-1 Second time slot E m Mapping a first time slot D 1m . The second time slot E is processed according to the mapping relation table 1 Inverse mapping of data to carrier C 1 First time slot D of 11 A second time slot E 2 Inverse mapping of data to carrier C 1 First time slot D of 12 A second time slot E 3 -E 7 In turn inverse mapping data to carrier C 2 First time slot D of 23 -D 27 A second time slot E 8 Inverse mapping of data to carrier C 1 First time slot D of 18 A second time slot E 9 -E m-1 In turn inverse mapping data to carrier C 2 First time slot D of 29 -D 2m-1 A second time slot E m Inverse mapping of data to carrier C 1 First time slot D of 1m . When receiving data, the second time slot of the single carrier is used for acquiring data in the multiple carriers, the data is restored according to the mapping relation table, and the data is received through the single carrier, so that the data receiving efficiency is improved.
Fig. 5 is a schematic diagram of a data transmission apparatus according to an embodiment of the present invention, and for convenience of description, only the portions related to the embodiment of the present invention are shown, and detailed as follows:
a data transmission apparatus comprising: a multi-carrier establishing unit 51, a first selecting unit 52, a first padding unit 53 and a data sending unit 54, wherein:
the multi-carrier establishing unit 51 is configured to establish n carriers, where each carrier is divided into m first time slots, and each first time slot includes data to be sent, where n and m are positive integers greater than or equal to 2.
In the embodiment of the present invention, when a device a and a device B perform communication, a structure of a communication network needs to be established in advance, fig. 2 shows a schematic diagram of first time slot division of each carrier in the embodiment of the present invention, and establishment C is used for establishing 1 、C 2 、C 3 、……、C n N carriers are used for transmitting data, and each carrier is divided into m first time slots, so that C 1 The first time slot of (c) is noted as: d 11 、D 12 、D 13 、……、D 1m ，C 2 The first time slot of (c) is noted as: d 21 、D 22 、D 23 、……、D 2m ，……，C n The first time slot of (c) is noted as: d n1 、D n2 、D n3 、……、D nm Wherein, C 1 First time slot D of 11 、C 2 First time slot D of 21 … …, and C n First time slot D of n1 Time slots at the same time, i.e. only D can be transmitted at the same time 11 、D 21 、……、D n1 One time slot in; likewise, C 1 First time slot D of 12 、C 2 First time slot D of 22 … …, and C n First time slot D of n2 Is a time slot of the same time, … …, C 1 First time slot D of 1m 、C 2 First time slot D of 2m … …, and C n First time slot D of nm Are time slots at the same time.
The first selecting unit 52 is configured to divide a frame at a time t of sending data into m second time slots, and select a carrier as a first carrier to be sent according to priority among n carriers.
In this embodiment of the present invention, a device a, as a sending end, sends data to a device B, and divides a frame at a certain time t when the device a sends data into m second time slots, where the m second time slots may be denoted as: e 1 、E 2 、E 3 、……、E m . When sending data, according to the priority, select a carrier from n carriers, and use the carrier as the first carrier to be sent, e.g. select carrier C in fig. 2 1 As the first carrier to be transmitted.Since valid data may not exist in the first time slot of each carrier, and may be a blank time slot, in order to reduce the data operation amount, carriers with a larger amount of data to be sent included in the first time slot need to be preferentially selected, where the priority is: the data quantity to be sent contained in the m first time slots in the carrier is arranged from high to low.
The first filling unit 53 is configured to correspondingly fill the data to be sent of the m first time slots in the first carrier to be sent into the m second time slots.
In the embodiment of the present invention, after selecting a carrier from n carriers according to the priority, the data to be sent in the first time slot of the selected carrier is correspondingly filled into the second time slot, for example, in fig. 2, the carrier C is selected 1 After being the first carrier to be transmitted, assume that carrier C 1 The first time slot containing data to be transmitted is the first time slot D 11 、D 12 、……、D 1m The first time slot D 11 、D 12 、……、D 1m Filling the data to be sent to the second time slot E correspondingly 1 、E 2 、E 3 、……、E m Correspondingly, the first time slot D 11 Filling the data to be sent to the second time slot E correspondingly 1 First time slot D 12 Filling the data to be sent to the second time slot E correspondingly 2 … …, first time slot D 1m Filling the data to be sent to the second time slot E correspondingly m Thus, the m second slots are all completely filled.
A data transmitting unit 54, configured to transmit data using the m second slots completely filled.
In the embodiment of the present invention, device a serves as a sending end to send data to device B, and sends data when m second time slots are completely filled.
Fig. 6 shows a schematic diagram of a data transmission apparatus according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, and detailed descriptions are as follows:
a data transmission apparatus comprising: a multi-carrier establishing unit 61, a first selecting unit 62, a first padding unit 63, a second selecting unit 64, a second padding unit 65, a data sending unit 66, and a mapping relationship forming unit 67, wherein:
the multi-carrier establishing unit 61 is configured to establish n carriers, where each carrier is divided into m first time slots, and each first time slot includes data to be sent, where n and m are positive integers greater than or equal to 2.
In the embodiment of the invention, the architecture of the communication network is established in advance, and C is established 1 、C 2 、C 3 、……、C n N carriers transmit data, each carrier being divided into m first time slots, whereby C 1 The first time slot of (c) is noted as: d 11 、D 12 、D 13 、……、D 1m ，C 2 The first time slot of (c) is noted as: d 21 、D 22 、D 23 、……、D 2m ，……，C n The first slot of (c) is noted as: d n1 、D n2 、D n3 、……、D nm 。
The first selecting unit 62 is configured to divide a frame at time t of sending data into m second time slots, and select a carrier as a first carrier to be sent according to priority among n carriers.
In this embodiment of the present invention, a device a, as a sending end, sends data to a device B, and divides a frame at a certain time t when the device a sends data into m second time slots, where the m second time slots may be denoted as: e 1 、E 2 、E 3 、……、E m . When data is sent, a carrier is selected from the n carriers according to the priority, and the carrier is used as a first carrier to be sent.
A first filling unit 63, configured to correspondingly fill m first time slots of data to be sent in the first carrier to be sent into m second time slots.
In the embodiment of the present invention, after selecting a carrier from n carriers according to the priority, the data to be sent in the first time slot of the selected carrier is correspondingly filled into the second time slot, for example, in fig. 2, the carrier C is selected 1 As the first carrier to be transmitted, per carrierThere is not always valid data in the first time slot, possibly a blank time slot, assuming carrier C 1 The first time slot containing data to be transmitted is the first time slot D 11 、D 12 、D 18 And D 1m The other first time slot D 13 -D 17 And D 19 -D 1m-1 Is a blank time slot, and the first time slot D 11 、D 12 、D 18 And D 1m Filling the data to be sent to the second time slot E correspondingly 1 、E 2 、E 8 And E m Correspondingly, the first time slot D 11 Filling the data to be sent to the second time slot E correspondingly 1 First time slot D 12 Filling the data to be sent to the second time slot E correspondingly 2 First time slot D 18 Filling the data to be sent to the second time slot E correspondingly 8 And a first time slot D 1m Corresponding filling of data to be sent in the second time slot E m At this time, E in m second slots 3 -E 7 And E 9 -E m-1 Are unfilled empty slots.
A second selecting unit 64, configured to, if there is a blank time slot in the m second time slots, continue to select a carrier as a second to-be-sent carrier in the n carriers according to the priority.
In the embodiment of the present invention, after the first carrier to be transmitted is selected for filling, since the first carrier to be transmitted includes empty slots, empty slots exist in the second slots after filling, for example, E in m second slots 3 -E 7 And E 9 -E m-1 When the carrier to be transmitted is selected to be filled, marking the carrier to be transmitted after all the effective data in the carrier to be transmitted are filled to the second time slot, and when the carrier is selected again, not selecting the marked carrier to avoid repeatedly transmitting the data, and when the blank time slots exist in the m second time slots, continuously selecting a carrier from the n carriers as the carrier to be transmitted according to the priority.
A second filling unit 65, configured to correspondingly fill the data to be sent in the m first time slots in the second carrier to be sent into blank time slots in the m second time slots.
In the embodiment of the present invention, for example, the second carrier C to be sent is selected 2 The first time slot containing data to be transmitted is the first time slot D 23 -D 2m The other first time slot D 21 And D 22 Is a blank time slot, and transmits the second carrier C to be transmitted 2 First time slot D of 23 -D 27 And D 29 -D 2m-1 Filling the data to be sent to the second time slot E correspondingly 3 -E 7 And E 9 -E m-1 Correspondingly, the first time slot D 23 -D 27 Filling the data to be sent to the second time slot E correspondingly 3 -E 7 First time slot D 29 -D 2m-1 Filling the data to be sent to the second time slot E correspondingly 9 -E m-1 Whereby the m second time slots are completely filled and carrier C 2 The first time slot which is not filled to the second time slot and contains data to be sent is D 28 And D 2m 。
A data transmitting unit 66, configured to transmit data by using the completely filled m second slots.
In the embodiment of the present invention, device a serves as a sending end to send data to device B, and sends data when m second time slots are completely filled.
A mapping relationship forming unit 67, configured to form a mapping relationship table by using the data to be sent in the completely filled m second time slots and the first time slots in the n carriers, and send the mapping relationship table.
In the embodiment of the present invention, the m second time slots are completely filled with data to be transmitted, and the data to be transmitted in the m completely filled second time slots and the first time slots in the n carriers form a mapping relationship table, so that after a receiving end receives the data, the data in the second time slots can be inversely mapped to the corresponding carriers. For example, the second time slot E of the m second time slots 1 Mapping a first time slot D 11 Second time slot E 2 Mapping first timeGap D 12 Second time slot E 3 -E 7 Mapping the first time slots D in sequence 23 -D 27 Second time slot E 8 Mapping a first time slot D 18 Second time slot E 9 -E m-1 Mapping the first time slots D in sequence 29 -D 2m-1 Second time slot E m Mapping a first time slot D 1m 。
Fig. 7 shows a schematic diagram of a data receiving device according to an embodiment of the present invention, and for convenience of illustration, only the parts related to the embodiment of the present invention are shown, and detailed as follows:
a data receiving device, comprising: a data acquisition unit 71 and an inverse mapping unit 72, wherein:
a data acquisition unit 71 configured to acquire data through m second slots, which are slots divided by a frame at time t when data is transmitted, where m is a positive integer equal to or greater than 2.
In the embodiment of the present invention, the data in the m second time slots is data filled by the data to be transmitted in the first time slot of the n carriers, where the n carriers are C 1 、C 2 、C 3 、……、C n The data in the m second time slots may be all data of one carrier of the n carriers, or may be partial data of a plurality of carriers of the n carriers.
And an inverse mapping unit 72, configured to, when receiving the mapping table, inversely map the data to the carrier according to the mapping table.
In the embodiment of the present invention, when the receiving end receives the mapping relationship table, the receiving end inversely maps the data to the carrier according to the mapping relationship table, for example, the mapping relationship table is: second time slot E 1 Mapping a first time slot D 11 Second time slot E 2 Mapping a first time slot D 12 Second time slot E 3 -E 7 Mapping the first time slots D in sequence 23 -D 27 Second time slot E 8 Mapping a first time slot D 18 Second time slot E 9 -E m-1 Mapping the first time slots D in turn 29 -D 2m-1 Second time slot E m Mapping a first time slot D 1m . According to the reflectionThe second time slot E is mapped by the relation table 1 Inverse mapping of data to carrier C 1 First time slot D of 11 A second time slot E 2 Inverse mapping of data to carrier C 1 First time slot D of 12 A second time slot E 3 -E 7 Sequentially inverse mapping the data in (1) to the carrier C 2 First time slot D of 23 -D 27 A second time slot E 8 Inverse mapping of data to carrier C 1 First time slot D of 18 A second time slot E 9 -E m-1 Sequentially inverse mapping the data in (1) to the carrier C 2 First time slot D of 29 -D 2m-1 A second time slot E m Inverse mapping of data to carrier C 1 First time slot D of 1m . When receiving data, the second time slot of the single carrier is used for acquiring data in the multiple carriers, the data is restored according to the mapping relation table, and the data is received through the single carrier, so that the data receiving efficiency is improved.
One use scenario of the technical solution of the present embodiment is as follows:
in the application of the satellite communication system, a main station and an end station communicate with each other, and the uplink and the downlink adopt C 1 、C 2 、C 3 、……、C 8 Totally 8 carriers transmit data, each carrier can be divided into 48 first time slots, the first time slots of each carrier are numbered, C 1 The first time slot of (c) is noted as: d 11 、D 12 、D 13 、……、D 148 ，C 2 The first slot of (c) is noted as: d 21 、D 22 、D 23 、……、D 248 ，……，C 8 The first time slot of (c) is noted as: d 81 、D 82 、D 83 、……、D 848 Wherein, C 1 First time slot D of 11 、C 2 First time slot D of 21 … …, and C 8 First time slot D of 81 Time slots at the same time, i.e. only D can be transmitted at the same time 11 、D 21 、……、D 81 One time slot in; likewise, C 1 First time slot D of 12 、C 2 First time slot D of 22 、……、And C 8 First time slot D of 82 Is a time slot of the same time, … …, C 1 First time slot D of 148 、C 2 First time slot D of 248 … …, and C 8 First time slot D of 848 Are time slots at the same time.
During downlink, a frame at the time t when the master station sends data is divided into 48 second time slots, a carrier is selected from 8 carriers according to priority, the carrier is used as a first carrier to be sent, the data to be sent of the 48 first time slots in the first carrier to be sent are correspondingly filled into the 48 second time slots, after the filling is completed, whether the 48 second time slots are completely filled is judged, if the data are not completely filled, the data of other carriers are continuously scheduled according to the priority, and the data are sent until the 48 second time slots all have the data. And after the data is sent, sending out the mapping relation table. And after the end station receives all the data, inversely mapping the received data to the time slot of each carrier according to the received mapping relation table.
During uplink, a frame at a time t when an end station sends data is divided into 48 time slots, a carrier is selected from 8 carriers according to priority, the carrier is used as a first carrier to be sent, the 48 first time slots of the first carrier to be sent are correspondingly filled into 48 second time slots, after the filling is completed, whether the 48 second time slots are completely filled is judged, if the 48 second time slots are not completely filled, the data of other carriers are continuously scheduled according to the priority, and the data are not sent until the 48 second time slots all have data. And after the data is sent, sending out the mapping relation table. And after the master station receives all the data, inversely mapping the received data to the time slots of each carrier according to the received mapping relation table.
Similarly, the usage scenario of the technical solution of this embodiment may also be: in the wireless communication system, communication is carried out between base stations, any one base station A is selected as equipment A, and any other base station B is selected as equipment B.
The data transmitting and receiving method and device divide each carrier in a multi-carrier into m first time slots, correspondingly fill data to be transmitted in a certain carrier in the multi-carrier by using a single carrier comprising m second time slots when the data are generated, and transmit the data when the single carrier comprising the m second time slots is completely filled, thereby ensuring that the spectrum efficiency of limited frequency resources is effectively utilized and the bandwidth utilization rate is improved.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Those skilled in the art can implement the invention in various modifications, such as features from one embodiment can be used in another embodiment to yield yet a further embodiment, without departing from the scope and spirit of the invention. Any modification, equivalent replacement and improvement made within the technical idea of using the present invention should be within the scope of the right of the present invention.
Claims (6)
1. A method for transmitting data, the method comprising:
establishing n carriers, wherein each carrier is divided into m first time slots, each first time slot contains data to be sent, and both n and m are positive integers greater than or equal to 2;
dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to priority in the n carriers;
correspondingly filling the data to be sent of the m first time slots in the first carrier to be sent into the m second time slots;
transmitting data by using the m second time slots which are completely filled;
before the step of transmitting data using the m second slots completely filled, the method includes:
if blank time slots exist in the m second time slots, continuously selecting a carrier as a second carrier to be sent in the n carriers according to the priority;
correspondingly filling the data to be sent of the m first time slots in the second carrier to be sent into blank time slots of the m second time slots.
2. The data transmission method according to claim 1, wherein the method further comprises:
and forming a mapping relation table by the data to be sent in the completely filled m second time slots and the first time slots in the n carriers, and sending the mapping relation table.
3. The data transmission method according to claim 1, wherein the priority is: and arranging the data quantity to be sent from high to low according to the data quantity contained in the m first time slots in the carrier.
4. A data transmission apparatus, characterized in that the apparatus comprises:
the multi-carrier establishing unit is used for establishing n carriers, each carrier is divided into m first time slots, the first time slots contain data to be sent, and both n and m are positive integers which are more than or equal to 2;
the first selection unit is used for dividing a frame at the moment t of sending data into m second time slots, and selecting a carrier as a first carrier to be sent according to priority in the n carriers;
a first filling unit, configured to correspondingly fill the data to be sent in the m first time slots in the first carrier to be sent into the m second time slots; and
a data transmitting unit, configured to transmit data using the m second slots that are completely filled;
the device further comprises:
a second selecting unit, configured to, if there is a blank time slot in the m second time slots, continue to select a carrier as a second to-be-sent carrier in the n carriers according to the priority; and
a second filling unit, configured to correspondingly fill the data to be sent in the m first time slots in the second carrier to be sent into blank time slots in the m second time slots.
5. The data transmission apparatus according to claim 4, wherein the apparatus further comprises:
a mapping relationship forming unit, configured to form a mapping relationship table from the data to be sent in the completely filled m second time slots and the first time slots in the n carriers, and send the mapping relationship table.
6. The data transmission apparatus according to claim 4, wherein the priority is: and arranging the data quantity to be sent from high to low according to the data quantity contained in the m first time slots in the carrier.
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| WO2005041457A1 (en) * | 2003-10-23 | 2005-05-06 | Sharp Kabushiki Kaisha | Ofdm transmitter/receiver apparatus |
| CN101107871A (en) * | 2004-10-12 | 2008-01-16 | Lm爱立信电话有限公司 | Communication between a radio equipment control node and multiple remote radio equipment nodes |
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