CN101087245A - Method for simultaneously transmitting multiple types of data in mobile communication system - Google Patents
Method for simultaneously transmitting multiple types of data in mobile communication system Download PDFInfo
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- CN101087245A CN101087245A CNA2006100874646A CN200610087464A CN101087245A CN 101087245 A CN101087245 A CN 101087245A CN A2006100874646 A CNA2006100874646 A CN A2006100874646A CN 200610087464 A CN200610087464 A CN 200610087464A CN 101087245 A CN101087245 A CN 101087245A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010295 mobile communication Methods 0.000 title description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000005538 encapsulation Methods 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 5
- 230000001413 cellular effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a method to transmit several type data, which includes: A. source node sets type information for every data unit, and sets the length information for data unit that without the length information; B. source nodes pack the data unit to data packet with different type, and said data packets are sent to target node; C. target node recovers the data unit according to the type and length of data unit. The invention sets type information for every receiving data unit, and the target node can distinguish data unit according to the type information of data unit; by setting length information for the data unit without length information, the target node can resolve the data unit according to the length information of data unit to realize to transmit data unit with different type and different length in one data packet, and increase the flexibility of data transmission.
Description
Technical field
The present invention relates to the data in mobile communication system transmission technology field, relate in particular to the method for transmitting the polytype data in a kind of mobile communication system simultaneously.
Background technology
In mobile communication system, owing to moving or other reason of load Sharing, terminal use, often need be with the terminal use from wireless access network (RAN, Radio Access Network) the broadband node (NodeB) in, it is source node, transfer to another broadband node, i.e. destination node.For the continuity that guarantees to communicate by letter, need between each node of wireless access network, transmit polytype data, this just needs some mechanism makes destination node can distinguish various types of data from source node, thereby can carry out follow-up operation.
At present, in the method for transmitting the polytype data between each node be: the packet that a plurality of data cells of same type, equal length is packaged into agreement permission between suitable node at source node; Increase corresponding type indication territory in the header of the packet after encapsulation; After destination node is received described packet, can know the type of data cell in this packet according to the information in type indication territory in its header, and then recover each data cell in this packet.
In the prior art, between node when transmission polytype data cell, only allow the data cell of same type, equal length is encapsulated into a packet, the shortcoming of this scheme is the encapsulation underaction of data cell, when the data cell type that will transmit more for a long time, need the packet of encapsulation also can increase thereupon, and be easy to generate redundant filling information.
Summary of the invention
In view of this, the invention provides the method for transmitting the polytype data in a kind of mobile communication system simultaneously, the technical problem that solves is data cell dissimilar, different length to be encapsulated in the same packet transmit, thereby has increased the flexibility of transfer of data.
This method comprises:
A, source node are provided with type information for each data to be transmitted unit, and length information are set for the data to be transmitted unit that does not carry self length information;
B, source node advance packet with the data of different types unit package, and described packet is sent to destination node;
C, destination node recover each data cell according to the type and the length of each data cell.
Wherein, further comprise:
D, before steps A, source node judges that whether the data to be transmitted unit satisfies the condition that presets, if satisfy, then packet is set to numerous types of data, and execution in step A, step B and step C successively; Otherwise packet is set to single data type, and execution in step E, step F and step G successively;
E, source node are provided with length information for the data to be transmitted unit that does not carry self length information, and the type information of data to be transmitted unit is arranged in the header of packet;
F, described data to be transmitted unit package is advanced packet, described packet is sent to destination node;
G, destination node recover each data cell according to the type of this packet, the type and the length of data cell.
Wherein, source node is provided with type information for each data to be transmitted unit in the described steps A, and its process comprises:
Type indication territory is set, indicates in the territory by presetting the type of this data to be transmitted unit of information flag in described type.
Wherein, described source node is provided with length information for the data to be transmitted unit that does not carry self length information, and its process comprises:
Source node judges that whether data cell waiting for transmission self carries length information, if carry, does not then carry out any processing to this data cell; Otherwise, the Length Indication territory is set in the header of this data cell, and in described Length Indication territory the length of this data cell of mark.
Wherein, source node advances packet with the data of different types unit package among the described step B, and its process comprises:
According to order and the information such as priority of described data cell in buffering area each data cell is encapsulated into packet;
When the remainder length of packet during, finish encapsulation less than the minimum data element length in any data cell type;
The quantity information of data cell in the described packet is arranged in the header of described packet.
Wherein, described packet is set to numerous types of data, and its process comprises:
In the header of packet type field being set, is numerous types of data in described type field by the type that presets this packet of information flag.
Wherein, described packet is set to single data type, and its process comprises:
In the header of packet type field being set, is single data type in described type field by the type that presets this packet of information flag.
Wherein, further comprise:
When packet is set to numerous types of data, between execution in step B and step C, destination node will be known the type of this packet according to the mark of the type field in the data packet head information.
Wherein, source node advances packet with the data to be transmitted unit package in the described step F, and its process comprises:
According to order and the information such as priority of described data cell in buffering area each data cell is encapsulated into packet;
When the remainder length of packet during, finish encapsulation less than the length of minimum data unit;
The quantity information of described data cell is arranged in the header of described packet.
Wherein, the described condition of presetting is: the type of data to be transmitted unit is less than the fill volume of a packet more than same type the total quantity of data cell in set point or the data waiting for transmission.
The invention has the beneficial effects as follows:, destination node can be distinguished to each data cell according to the type information of each data cell by type information being set for each data to be transmitted unit; By length information being set for the data to be transmitted unit that does not carry self length information, destination node can be resolved each data cell according to the length information of each data cell, transmit thereby can realize data cell dissimilar, different length is encapsulated in the same packet, increased the flexibility of transfer of data.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention 1.
Fig. 2 is the structure chart that the data cell behind the type indication territory is set among the present invention.
Fig. 3 is the structure chart that the data cell behind type indication territory and the Length Indication territory is set among the present invention.
Fig. 4 is the packet structure figure among the present invention.
Fig. 5 is the flow chart of the embodiment of the invention 2.
Fig. 6 is the flow chart of the embodiment of the invention 3.
Fig. 7 is the form of numerous types of data packet among the present invention.
Fig. 8 is the form of single data type packet among the present invention.
Embodiment
In the present invention, by type information being set, destination node can be distinguished according to the type information of each data cell to each data cell for each data to be transmitted unit; By length information being set for the data to be transmitted unit that does not carry self length information, destination node can be resolved each data cell according to the length information of each data cell, transmit thereby can realize data cell dissimilar, different length is encapsulated in the same packet.
Do further below in conjunction with 1 pair of method of the present invention of embodiment and to specify.
Referring to Fig. 1, transmit the method for polytype data in a kind of mobile communication system simultaneously, comprising:
Source node in the header of data to be transmitted unit, be provided with type indication territory (TI, TypeIndicator), and in described type indication territory the type of this data cell of mark.
The purpose that type indication territory is set for data cell is when destination node is received a packet, can know the type of each data cell according to the mark in the indication of the type in each data cell header in this packet territory, thereby finish differentiation different types of data unit in the same packet.Fig. 2 is the structure chart that the data cell behind the type indication territory is set.
It is definite how many sizes in type indication territory should come according to the type of data to be transmitted unit, such as: if the type of data to be transmitted unit has 2 kinds, then the size in type indication territory should be 1 bit; If the type of data to be transmitted unit has 7 kinds, then the size in type indication territory should be 3 bits.Below, there are 4 kinds to be example with the data cell type of transmitting, this moment, the size in type indication territory was 2 bits.The method to set up in type indication territory is as shown in table 1.
Press the method shown in the table 1, when the data cell of transport-type 1, mark " 00 " in the type indication territory of this data cell; When the data cell of transport-type 2, mark " 01 " in the type indication territory of this data cell, and by that analogy.After destination node is received data cell, can know the type of this data cell according to the mark in the type indication territory of this data cell.
| The mark in type indication territory | Implication |
| 00 | The data cell of Class1 |
| 01 | The data cell of type 2 |
| 10 | The data cell of type 3 |
| 11 | The data cell of type 4 |
Table 1
Source node judges whether data cell waiting for transmission self carries length information, if carry, then continues backward to carry out from step 104; Otherwise continue backward to carry out from step 103.
Source node is provided with Length Indication territory (LI in the header of data to be transmitted unit, LengthIndicator), and in described Length Indication territory the length of this data cell of mark, Fig. 3 is the structure chart that the data cell behind type indication territory and the Length Indication territory is set, wherein the Length Indication territory is between type indication territory and data cell, when destination node is resolved this data cell, at first resolve the type indication territory of this data cell, resolve the Length Indication territory then.
The purpose that the Length Indication territory is set for data cell is to make destination node obtain the length information of data cell, and recovers each corresponding data cell according to the length information of data cell.The length of each data cell in the same packet all can not be identical, because the length of each data cell there are differences in same packet, so destination node must be known the length of each data cell when recovering each data cell, otherwise can't finish the recovery of data cell.
Data cell after source node will be reset encapsulates into packet, sends to destination node.
Wherein, the data cell after source node will be reset encapsulates into, and the process of packet is:
According to order and the information such as priority of data cell in buffering area each data cell is encapsulated into packet; When the remainder length of packet during less than the minimum unit length of any categorical data unit, this moment, packet can not hold any data cell again, and then encapsulation finishes;
The quantity information of data cell is arranged in the header of packet.The structure of packet as shown in Figure 4, N represents the quantity of data cell in this packet.
After destination node was received packet, when the data cell of recovering wherein, at first the type of data cell was known in the type of resolution data unit indication territory, thereby can be with data of different types cellular zone in this packet separately; Resolve the Length Indication territory then, know the length of data cell, thus the restore data unit.Destination node can also be according to the quantity information of the data cell in this data packet head information, i.e. N value among Fig. 4 is known the number of data cell in this packet.Destination node just can be resolved one by one to each data cell like this, up to solving N data unit, the remaining filling information that is.
In embodiment 1 described method, source node is provided with earlier type indication territory in the header of data to be transmitted unit, and then length information is set for the data to be transmitted unit that does not carry self length information.
In the actual conditions, also can be earlier for the data to be transmitted unit that does not carry self length information is provided with length information, again for type indication territory is set in the header of data to be transmitted unit.Do further below in conjunction with 2 pairs of these methods of embodiment and to specify.
Referring to Fig. 5, transmit the method for polytype data in a kind of mobile communication system simultaneously, comprising:
Source node judges whether data cell waiting for transmission self carries length information, if carry, then continues backward to carry out from step 503; Otherwise continue backward to carry out from step 502.
Source node in the header of data to be transmitted unit, be provided with the Length Indication territory (LI, LengthIndicator), and in described Length Indication territory the length of this data cell of mark.
Source node in the header of data to be transmitted unit, be provided with type indication territory (TI, TypeIndicator), and in described type indication territory the type of this data cell of mark.
Be provided with Length Indication territory and type indication territory data cell structure still as shown in Figure 3, wherein the Length Indication territory is still between type indication territory and data cell.
Step 504～step 505 is identical with the manner of execution of step 104～step 105 of embodiment 1, here no longer repeat specification.
In embodiment 1 and embodiment 2,, can make destination node distinguish data of different types unit in the same packet by type indication territory is set for each data to be transmitted unit.Can make data transmission manner more flexible by this method, also greatly reduce the quantity of redundant filling information simultaneously.Meanwhile, also increased the quantity of control information, especially when source node only need be when destination node transmits the data cell of type seldom even only transmits one type data cell, still all increase a type indication territory for each data cell, to increase a large amount of meaningless control informations like this, serious waste transfer resource.
In order to address this problem, the present invention further proposes to be provided with for packet the method in type (Type) territory.By this method, source node can determine to select the data packet format of which kind of type to encapsulate according to the type and the quantity of the current data cell that will transmit, and indicates by the type of data packet territory.Do further below in conjunction with 3 pairs of these methods of embodiment and to specify.
Referring to Fig. 6, transmit the method for polytype data in a kind of mobile communication system simultaneously, comprising:
In the header of packet type field is set, the length of described type field is 1 bit, and is as shown in table 2 to being provided with of packet type field.If one type data cell is then represented only to have encapsulated in this packet in be labeled as " 0 " in the type of data packet territory; If polytype data cell is then represented to have encapsulated in this packet in be labeled as " 1 " in the type of data packet territory.
| The mark in type of data | Implication | |
| 0 | The packet of |
|
| 1 | The packet of numerous types of data |
Table 2
Whether judge the data to be transmitted cell type more than a kind of, if more than a kind of then continue backward to carry out from step 603; Otherwise, continue backward to carry out from step 609.
Wherein, Rule of judgment can according to circumstances determine, such as: whether also can judge the data to be transmitted unit more than two kinds, or judge in the data to be transmitted whether the total quantity of same type data cell is less than fill volume of a packet or the like.
In the type field of data packet head information, be numerous types of data with the type mark of this packet, i.e. mark " 1 ".
Step 604～step 607 is identical with the execution in step of step 101～step 104 of embodiment 1, here no longer repeat specification.
The data packet format of numerous types of data as shown in Figure 7, the Type in the data packet head information, promptly the value of type field is 1, N is the quantity of data cell included in the packet, the value of TI has shown the type of each data cell.
After destination node is received packet, can know the type of this packet, know to comprise polytype data cell in this packet according to the mark " 1 " in type of data packet territory.During data cell in recovery data packets, at first the type of data cell is known in the type of resolution data unit indication territory, thereby can be with data of different types cellular zone in this packet separately; Resolve the Length Indication territory then, know the length of data cell, thus the restore data unit.Destination node can also be according to the quantity information of the data cell in this data packet head information, i.e. N value among Fig. 4 is known the number of data cell in this packet.Destination node just can be resolved one by one to each data cell like this, up to solving N data unit.
Finish this data transmission procedure.
In the type field of data packet head information, be single data type with the type mark of this packet, i.e. mark " 0 ".
Source node judges whether data cell waiting for transmission self carries length information, if carry, then continues backward to carry out from step 612; Otherwise continue backward to carry out from step 611.
Source node is provided with the Length Indication territory in the header of data to be transmitted unit, and in described Length Indication territory the length of this data cell of mark.
The type information of data to be transmitted unit is arranged in the header of packet, each data to be transmitted unit package is advanced packet, and the quantity information of described data cell is arranged in the header of described packet, described packet is sent to destination node.
The form of single data type packet as shown in Figure 8, the Type in the data packet head information, promptly the value of type field is 0, N is the quantity of data cell included in the packet, the value of TI has shown the type of data cell in the packet.
After destination node is received packet, can know the type of this packet, know the data cell that includes only a type in this packet according to the mark " 0 " in type of data packet territory.Destination node can also be known the type of data cell in this packet and the quantity of data cell according to data packet head information, according to the length information in each data cell header each data cell is carried out one by one parsing then, up to solving N data unit, the remaining filling information that is.
Finish this data transmission procedure.
Can solve the problem that previous embodiment 1 exists by embodiment 3 described methods.There is identical problem in embodiment 2 with embodiment 1, as long as step 604～step 607 implementation of embodiment 3 is changed into step 501～step 504 of embodiment 2, and other step is constant, then embodiment 3 described methods can solve the problem that previous embodiment 2 exists equally, no longer repeat here to illustrate.
Claims (10)
1, a kind of method of transmitting the polytype data simultaneously is characterized in that, comprising:
A, source node are provided with type information for each data to be transmitted unit, and length information are set for the data to be transmitted unit that does not carry self length information;
B, source node advance packet with the data of different types unit package, and described packet is sent to destination node;
C, destination node recover each data cell according to the type and the length of each data cell.
2, method according to claim 1 is characterized in that, further comprises:
D, before steps A, source node judges that whether the data to be transmitted unit satisfies the condition that presets, if satisfy, then packet is set to numerous types of data, and execution in step A, step B and step C successively; Otherwise packet is set to single data type, and execution in step E, step F and step G successively;
E, source node are provided with length information for the data to be transmitted unit that does not carry self length information, and the type information of data to be transmitted unit is arranged in the header of packet;
F, described data to be transmitted unit package is advanced packet, described packet is sent to destination node;
G, destination node recover each data cell according to the type of this packet, the type and the length of data cell.
3, method according to claim 1 is characterized in that, source node is provided with type information for each data to be transmitted unit in the described steps A, and its process comprises:
Type indication territory is set, indicates in the territory by presetting the type of this data to be transmitted unit of information flag in described type.
4, method according to claim 1 and 2 is characterized in that, described source node is provided with length information for the data to be transmitted unit that does not carry self length information, and its process comprises:
Source node judges that whether data cell waiting for transmission self carries length information, if carry, does not then carry out any processing to this data cell; Otherwise, the Length Indication territory is set in the header of this data cell, and in described Length Indication territory the length of this data cell of mark.
5, method according to claim 1 is characterized in that, source node advances packet with the data of different types unit package among the described step B, and its process comprises:
According to order and the information such as priority of described data cell in buffering area each data cell is encapsulated into packet;
When the remainder length of packet during, finish encapsulation less than the minimum data element length in any data cell type;
The quantity information of data cell in the described packet is arranged in the header of described packet.
6, method according to claim 2 is characterized in that, described packet is set to numerous types of data, and its process comprises:
In the header of packet type field being set, is numerous types of data in described type field by the type that presets this packet of information flag.
7, method according to claim 2 is characterized in that, described packet is set to single data type, and its process comprises:
In the header of packet type field being set, is single data type in described type field by the type that presets this packet of information flag.
8, method according to claim 2 is characterized in that, further comprises:
When packet is set to numerous types of data, between execution in step B and step C, destination node will be known the type of this packet according to the mark of the type field in the data packet head information.
9, method according to claim 2 is characterized in that, source node advances packet with the data to be transmitted unit package in the described step F, and its process comprises:
According to order and the information such as priority of described data cell in buffering area each data cell is encapsulated into packet;
When the remainder length of packet during, finish encapsulation less than the length of minimum data unit;
The quantity information of described data cell is arranged in the header of described packet.
10, method according to claim 2 is characterized in that, the described condition of presetting is: the type of data to be transmitted unit is less than the fill volume of a packet more than same type the total quantity of data cell in set point or the data waiting for transmission.
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