CN101414848A - Method, apparatus and system for analyzing frame control head - Google Patents
Method, apparatus and system for analyzing frame control head Download PDFInfo
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- CN101414848A CN101414848A CNA2008102192015A CN200810219201A CN101414848A CN 101414848 A CN101414848 A CN 101414848A CN A2008102192015 A CNA2008102192015 A CN A2008102192015A CN 200810219201 A CN200810219201 A CN 200810219201A CN 101414848 A CN101414848 A CN 101414848A
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Abstract
The embodiment of the invention provides a method for analyzing encoding information of frame control heads, a device and system thereof. The method includes: obtaining the encoding information of frame control heads; merging the obtained encoding information of frame control heads; decoding and analyzing the merged encoding information of frame control heads. The application of the method, device and system provided by the embodiment of the invention can improve the noise-signal ratio of the encoding information of frame control heads, lower the demodulation threshold of the encoding information of frame control heads and enlarge the coverage area of network.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system of analyzing frame control head.
Background technology
The focus notion whole world inserting of microwave (WIMAX of the current communications field, World Interoperability forMicrowave Access) be a kind of broadband wireless technology based on IEEE 802.16 standards, the purpose of this technology is the air interface of unified fixed wireless access at first.In WIMAX, adopt encoding information of frame control heads (FCH, Frame Control Header) the subchannel operating position of description present frame, and carry the operating position of descending sub frame subchannel and coded system, repeat property and the length information of downlink map information (DL-MAP, Downlink Mapping).Terminal is resolved the content of FCH after obtaining physical layer synchronization, thereby obtains the required information of DL-MAP of resolving.That is, terminal only just might correctly parse the content of DL-MAP behind correct parsing FCH, thereby finishes the subsequent process of networking.
The inventor finds that there is following shortcoming in prior art in practice process:
Because FCH itself is the coded system that adopts 4 times of repetitions, if when DL-MAP also adopts 4 times the coded system of repetition, FCH is suitable with the DL-MAP demodulation threshold, that is, it is identical correctly to resolve the required signal to noise ratio of FCH and DL-MAP.But DL-MAP is the highest is to carry out 6 times of repeated encodings, so the demodulation performance that the demodulation performance of FCH will be lower than DL-MAP when adopting 6 times of repeated encodings.Because the content of just possible correct parsing DL-MAP behind the necessary correctly parsing of the terminal FCH, therefore, the demodulation performance of FCH is resolved DL-MAP with regard to the direct terminal that restricts.
Summary of the invention
The embodiment of the invention provides a kind of method, Apparatus and system of analyzing frame control head coded message, can improve the demodulation performance to FCH.
The method of described analyzing frame control head comprises:
Obtain encoding information of frame control heads;
The encoding information of frame control heads of obtaining is merged;
Encoding information of frame control heads after being combined is deciphered and is resolved.
The device of the analyzing frame control head coded message that the embodiment of the invention provides comprises:
The information acquisition module is used to obtain encoding information of frame control heads;
Message processing module is used for the encoding information of frame control heads that described information acquisition module obtains is merged;
The decoding parsing module is used for the encoding information of frame control heads after merging through described message processing module is deciphered and resolved.
Simultaneously, the embodiment of the invention provides a kind of network equipment, comprising:
The map information describing module is used for cooperating the mode of secondary mapping to describe the map information of ascending-descending subframes with compressing mapping;
The map information processing module, the map information that is used for ascending-descending subframes that described map information describing module is described is handled the length of fixing described compressing mapping;
The frame control head generation module is used for the compressing mapping according to described regular length, generates encoding information of frame control heads.
The embodiment of the invention also provides the system that resolves encoding information of frame control heads, and this system comprises: the device of the network equipment and parsing encoding information of frame control heads;
The described network equipment is used for sending encoding information of frame control heads to the device of described analyzing frame control head coded message;
The device of described analyzing frame control head coded message is used to obtain the encoding information of frame control heads that the described network equipment sends, and the encoding information of frame control heads of obtaining is merged, and the encoding information of frame control heads after the described merging is deciphered and resolved.
Method, the Apparatus and system of the analyzing frame control head coded message that the enforcement embodiment of the invention provides, by merging encoding information of frame control heads, improved the signal to noise ratio of encoding information of frame control heads, improved the demodulation performance of encoding information of frame control heads, further promote the demodulation performance of downlink map information, thereby improved the coverage of network.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the parsing FCH that provides of the embodiment of the invention;
Fig. 2 is another schematic flow sheet of the parsing FCH that provides of the embodiment of the invention;
Fig. 3 is another schematic flow sheet of the parsing FCH that provides of the embodiment of the invention;
Fig. 4 is another schematic flow sheet of the parsing FCH that provides of the embodiment of the invention;
Fig. 5 is the structural representation of the system of the parsing FCH that provides of the embodiment of the invention;
Fig. 6 is the apparatus structure schematic diagram of the parsing FCH that provides of the embodiment of the invention;
Fig. 7 is another apparatus structure schematic diagram of the parsing FCH that provides of the embodiment of the invention;
Fig. 8 is the structural representation of the network equipment that provides of the embodiment of the invention;
Fig. 9 is another structural representation of the network equipment that provides of the embodiment of the invention.
Embodiment
Implement method, the Apparatus and system of the analyzing frame control head coded message (FCH, Frame ControlHeader) that the embodiment of the invention provides, can improve the demodulation performance of FCH.
Referring to Fig. 1, the method flow schematic diagram of the parsing FCH that provides for the embodiment of the invention, as shown in the figure:
At step S100, obtain encoding information of frame control heads FCH.
At step S101, the described FCH that obtains is merged.
In embodiment provided by the invention, the mode that FCH is merged includes but not limited to: high specific merging, equal gain combining, selecting type merging or switching merging etc.
At step S102, the FCH after merging is deciphered the back resolve its information of carrying.
The method of the parsing FCH that the enforcement embodiment of the invention provides, by merging to FCH, improve its signal to noise ratio, the demodulation performance of FCH is also improved thereupon, thereby solve the demodulation performance that is lower than DL-MAP because of the demodulation performance of FCH, and the problem of restriction terminal parses DL-MAP.
Referring to Fig. 2, the another kind that provides for the embodiment of the invention is resolved the schematic flow sheet of the method for FCH.Among this embodiment, specifically the method that provides with the enforcement embodiment of the invention in the WIMAX network is that example is elaborated, and only is not only applicable to the WIMAX network but do not limit the embodiment of the invention, as shown in the figure:
At step S200, obtain encoding information of frame control heads FCH.
As, can be the FCH that terminal is obtained the channel in the WIMAX network.
At step S201, the FCH that obtains is divided into two sections of front and back, the front and back of this FCH have identical encoded content for two sections.
Particularly, FCH can be 24 bits (bit) in the WIMAX network, can not carry out scrambling earlier to before the FCH coding, encodes after described 24bit is repeated one times.The coded system of FCH is tail biting codes (tail-biting convolutional encoder) among the WIMAX, the shift register that is encoder carries out initialization with the last 6bit of block to be encoded, so the FCH behind the coding is 96bit, and front and back 48bit is identical.Die in this step, after two sections, the front and back of this FCH had identical encoded content for two sections before and after FCH was divided into.
At step S202, the front and back of described FCH are merged for two sections.
Being described terminal merges for two sections the front and back of FCH, in the present embodiment, to two sections modes that merge in front and back of FCH can be: high specific merging, equal gain combining, selecting type merge or switch and merge etc.Wherein, it is optimum merging mode that high specific merges, and under ideal conditions, the signal to noise ratio after the merging is the signal to noise ratio sum of the two sections coded messages in front and back of former FCH.
At step S203, the FCH after merging is deciphered the back resolve.
Because after through step S202 two sections of the front and back of FCH being merged, merge back FCH signal to noise ratio and improve, make described terminal to the decoding of FCH and resolve easier.
The method of the parsing FCH that the enforcement embodiment of the invention provides, merge for two sections by the front and back that the FCH encoded content in the WIMAX network is identical, improve the signal to noise ratio of FCH, the demodulation performance of FCH is also improved thereupon, reduced the thresholding of terminal parses FCH, thereby solve because the demodulation performance of FCH is lower than the demodulation performance to DL-MAP, and restrict the problem of terminal parses DL-MAP, enlarged the coverage of WIMAX network.
Referring to Fig. 3, the other method schematic flow sheet of the parsing FCH that provides for the embodiment of the invention.
Among this embodiment, specifically the method that provides with the enforcement embodiment of the invention in the WIMAX network is that example is elaborated, but do not limit the embodiment of the invention and only be used for the WIMAX network, the method of the parsing FCH that present embodiment provides is with the difference of method as shown in Figure 2, method in the present embodiment is not that the front and back two parts with FCH merge, and after will encoded content by FCH in the fixing WIMAX network, then can merge a plurality of FCH, improve its signal to noise ratio, thereby improved its demodulation performance.Certainly, method shown in Figure 3 and method shown in Figure 2 can be implemented simultaneously, to obtain better demodulation performance.
In the WIMAX network, can adopt compressing mapping to cooperate secondary mapping (Compressed MAP+SubMAP, Compressed Mapping and Sub Mapping) mode is described the MAP of ascending-descending subframes, be downlink map information (DL-MAP) and uplink map information (UL-MAP), this moment, the unfixed reason of encoded content of FCH was: the length of DL-MAP and UL-MAP can change because of the different of regional switch unit (Zone Switch IE) number in every frame, the change of DL-MAP and UL-MAP length can make the length of compressing mapping information (Compressed MAP) change thereupon, thereby makes the encoded content of the associated byte of describing Compressed MAP length among the FCH also unfixing.In the present embodiment, the fixedly method of FCH encoded content will be set forth emphatically.
The method of the parsing FCH that the embodiment of the invention provides, idiographic flow be as shown in Figure 3:
At step S300, adopt compressing mapping to cooperate the mode of secondary mapping Compressed MAP+Sub MAP to describe map information (as ascending-descending subframes DL-MAP and/or UL-MAP).
In the embodiment of the invention, the mode that pre-determines WIMAX network using Compressed MAP+Sub MAP is described DL-MAP and/or UL-MAP, describes DL-MAP and/or UL-MAP as the mode of the CompressedMAP+Sub MAP that can adopt agreement regulation.For the various information units that comprise among the described CompressedMAP (IE, Information Element), except that regional switch unit (ZoneSwitch IE), other IE length is fixed, and can the length of Compressed MAP not impacted.
At step S301, preestablish maximum region switch unit Zone Switch IE number N.
In the embodiment of the invention, the value of described N is no more than the maximum of stipulating in the agreement 8, but the value of N is got the specification that reference system designs when implementing the embodiment of the invention.
At step S302, in compressing mapping Compressed MAP, reserve and the corresponding byte of described predefined maximum Zone Switch IE number N, when reality is used, can only take in the byte of described reservation and the corresponding part of actual Zone Switch IE number, the byte of all the other reservations can be sky, thereby the length of compressing mapping Compressed MAP is fixed.Because have only the encoded content of the associated byte of describing CompressedMAP length fixing in the prior art among the FCH, by the embodiment of the invention, along with fixing of CompressedMAP length, then the encoded content of FCH is also identical thereupon.
Need to prove step S300 to step S302 for presetting step, the method that implementing the embodiment of the invention provides does not need at every turn all execution in step S300 to step S302.
At step S303, obtain at least two encoding information of frame control heads FCH.
Be that terminal is obtained at least two FCH in the WIMAX network channel, according to aforementioned operation of presetting step, the described a plurality of FCH that then obtain in this step have identical encoded content.
At step S304, described at least two FCH that obtain are merged.
Described terminal merges described at least two FCH that obtain, and the mode of described merging can merge etc. for: high specific merging, equal gain combining, selecting type merge or switch.Wherein, it is optimum merging mode that high specific merges, and under ideal conditions, the FCH signal to noise ratio after the merging is the signal to noise ratio sum of former a plurality of FCH.
At step S305, the FCH after being combined deciphers, and resolves the entrained information of this FCH then.Because the FCH signal to noise ratio after merging improves, it is easier to make terminal must decipher and resolve FCH.
The method of FCH by the length of fixation of C ompressed MAP, makes FCH have fixing encoded content, thereby a plurality of FCH can be merged, to improve its signal to noise ratio in the parsing WIMAX network that the enforcement embodiment of the invention provides.The method that present embodiment provides can also be used in combination with the method that provides among the embodiment one, two, further improve the signal to noise ratio of FCH, reduce the demodulation threshold of FCH, thereby solve because the demodulation performance of FCH is lower than the demodulation performance to DL-MAP, and the problem of restriction terminal parses DL-MAP has enlarged the coverage of WIMAX network.
Referring to Fig. 4, the schematic flow sheet of another embodiment of FCH in the parsing WIMAX network that provides for the embodiment of the invention.
The difference of the method for FCH and method as shown in Figure 3 is in the parsing WIMAX network that present embodiment provides, method in the present embodiment is not to make Compressed MAP have fixing length by reserving fixing Zone Switch IE number, but with Zone Switch IE at secondary map information (SubMAP, Sub Mapping) issues in, thereby the length of fixation of C ompressed MAP, and then make the FCH that describes Compressed MAP relevant information have fixing encoded content.
The method of FCH is as shown in Figure 4 in the parsing WIMAX network that the embodiment of the invention provides:
At step S400, adopt compressing mapping to cooperate the mode of secondary mapping (Compressed MAP+Sub MAP, Compressed Mapping and Sub Mapping) to describe map information (as DL-MAP and/or UL-MAP).
In the embodiment of the invention, the mode that pre-determines WIMAX network using Compressed MAP+Sub MAP is described map information (as DL-MAP and/or UL-MAP), mode as the Compressed MAP+Sub MAP that can adopt agreement regulation is described, among the IE that this moment, described Compressed MAP comprised, except that Zone Switch IE number, other IE is that length is fixing, can't the length of MAP be impacted.
At step S401, described Zone Switch IE is carried among the Sub MAP issues.
When the mode of WIMAX network using Compressed MAP+Sub MAP is described MAP, only describe the relevant information of Compressed MAP among the FCH, and do not describe the relevant information of Sub MAP.Therefore will cause the uncertain Zone Switch of MAP length IE to change into to be carried on issue among the Sub MAP after, the length of Compressed MAP just can not change, then the encoded content among the FCH is also just determined thereupon.
Need to prove step S400 to step S401 for presetting step, the method that implementing the embodiment of the invention provides does not need at every turn all execution in step S400 to step S401.
At step S402, obtain at least two encoding information of frame control heads FCH.
Be that terminal is obtained at least two FCH in the WIMAX network channel, according to aforementioned operation of presetting step, a plurality of FCH that then obtain in this step have identical encoded content.
At step S403, at least two FCH that obtain are merged.
Described terminal merges described at least two FCH that obtain, and the mode of described merging can merge etc. for: high specific merging, equal gain combining, selecting type merge or switch.Wherein, it is optimum merging mode that high specific merges, and under ideal conditions, the FCH signal to noise ratio after the merging is the signal to noise ratio sum of former a plurality of FCH.
At step S404, the FCH after being combined deciphers, and resolves the entrained information of FCH then, because make terminal more accurate when FCH is resolved in decoding through the FCH signal to noise ratio raising after merging.
The method of FCH in the parsing WIMAX network that the enforcement embodiment of the invention provides, by in SubMAP, issuing Zone Switch IE, the length of Compressed MAP is fixed, also just make FCH have identical encoded content, thereby a plurality of FCH can be merged to improve its signal to noise ratio.The method that present embodiment provides can also cooperate enforcement with the method that provides among the embodiment one, two, further reduce the thresholding of terminal demodulation FCH, thereby solve because the demodulation performance of FCH is lower than the demodulation performance to DL-MAP, and the problem of restriction terminal parses DL-MAP, the coverage of expansion WIMAX network.
Referring to Fig. 5, the structural representation of the system of the parsing FCH that provides for the embodiment of the invention.As shown in Figure 5, this system comprises: the device 1 of analyzing frame control head coded message and the network equipment 2;
The described network equipment 2 is used for sending encoding information of frame control heads to the device 1 of described analyzing frame control head coded message;
The device 1 of described analyzing frame control head coded message is used to obtain the encoding information of frame control heads that the network equipment 2 sends, and the encoding information of frame control heads of obtaining is merged, and the encoding information of frame control heads after the described merging is deciphered and resolved.
In the system that present embodiment provides, the mode that encoding information of frame control heads is merged includes but not limited to: high specific merging, equal gain combining, selecting type merging or switching merging etc., after described encoding information of frame control heads merged, described encoding information of frame control heads has higher signal to noise ratio, and its demodulation performance is also higher.The device 1 of described analyzing frame control head coded message can be a terminal, and the described network equipment 2 can be the base station.
In the embodiment of the invention, the device 1 of described analyzing frame control head coded message is when merging described encoding information of frame control heads, can be earlier described encoding information of frame control heads to be divided into two sections of front and back, the front and back of described encoding information of frame control heads are merged for two sections, particularly, encoding information of frame control heads can be 24 bits (bit) in the WIMAX network, can not carry out scrambling earlier to before the encoding information of frame control heads coding, encodes after described 24bit is repeated one times.The coded system of encoding information of frame control heads is tail biting codes (tail-biting convolutional encoder) among the WIMAX, the shift register that is encoder carries out initialization with the last 6bit of block to be encoded, so the encoding information of frame control heads behind the coding is 96bit, and front and back 48bit is identical.Die in this step, after two sections, the front and back of this encoding information of frame control heads had identical encoded content for two sections before and after encoding information of frame control heads was divided into.The device 1 of then described analyzing frame control head coded message merges the front and back of described encoding information of frame control heads for two sections, and under ideal conditions, the signal to noise ratio after the merging is the signal to noise ratio sum of the two sections coded messages in front and back of former encoding information of frame control heads.
Further, the mode that the described network equipment 2 also is used to select compressing mapping to cooperate secondary mapping is described the map information of ascending-descending subframes, the fixing length of compressing mapping information, generate encoding information of frame control heads according to described compressing mapping information, then described encoding information of frame control heads is sent to the device 1 of described analyzing frame control head coded message, the device 1 of then described analyzing frame control head coded message, also be used to obtain at least two described encoding information of frame control heads with fixing encoded content, at least two encoding information of frame control heads obtaining are merged, the encoding information of frame control heads after the described merging is deciphered and resolved.
Wherein, optionally, the described network equipment 2 fixedly length of compressing mapping information can be in the following way: the maximum Zone Switch IE number N that preestablishes ascending-descending subframes, in described compressing mapping Compressed MAP, reserve and the corresponding byte of described predefined maximum Zone Switch IE number N, when the device 1 to described analyzing frame control head coded message sends encoding information of frame control heads, can only take in the byte of described reservation and the corresponding part of actual Zone Switch IE number, the byte of all the other reservations can be sky, thereby makes the length of corresponding compressing mapping Compressed MAP also just fixing.Because have only the encoded content of the associated byte of describing Compressed MAP length fixing in the prior art in each encoding information of frame control heads, existing fixing along with Compressed MAP length, the encoded content of each encoding information of frame control heads is also identical thereupon.
The device 1 of described analyzing frame control head coded message is specially when merging described encoding information of frame control heads, obtain at least two encoding information of frame control heads, described at least two encoding information of frame control heads obtaining are merged, and the mode of described merging can merge etc. for: high specific merging, equal gain combining, selecting type merge or switch.Wherein, it is optimum merging mode that high specific merges, and under ideal conditions, the encoding information of frame control heads signal to noise ratio after the merging is the signal to noise ratio sum of former a plurality of encoding information of frame control heads.Encoding information of frame control heads after being combined is deciphered, and resolves the entrained information of this encoding information of frame control heads then.Because the encoding information of frame control heads signal to noise ratio after merging improves, it is easier to make terminal must decipher and resolve encoding information of frame control heads.
Wherein, optionally, the described network equipment 2 fixedly length of compressing mapping information can also be in the following way: described Zone Switch IE is carried among the Sub MAP issues, like this, the length of described CompressedMAP just can not change, and then the encoded content in the encoding information of frame control heads is also just determined thereupon.
The device 1 of described analyzing frame control head coded message is specially when merging described encoding information of frame control heads, obtain at least two encoding information of frame control heads, described at least two encoding information of frame control heads obtaining are merged, and the mode of described merging can merge etc. for: high specific merging, equal gain combining, selecting type merge or switch.Wherein, it is optimum merging mode that high specific merges, and under ideal conditions, the encoding information of frame control heads signal to noise ratio after the merging is the signal to noise ratio sum of former a plurality of encoding information of frame control heads.Encoding information of frame control heads after being combined is deciphered, and resolves the entrained information of this encoding information of frame control heads then.Because the encoding information of frame control heads signal to noise ratio after merging improves, it is easier to make terminal must decipher and resolve encoding information of frame control heads.
Because in the WIMAX network, after needing the entrained information of analyzing frame control head coded message, could correctly resolve the information among the DL-MAP, so system of the parsing FCH that the embodiment embodiment of the invention provides, can avoid having enlarged the coverage of network because the demodulation performance of FCH is lower than the problem that the demodulation performance of DL-MAP is restricted terminal parses DL-MAP.
Referring to Fig. 6, the device example structure schematic diagram of the analyzing frame control head coded message that provides for the embodiment of the invention.As shown in Figure 6, this device comprises:
Decoding parsing module 12 is used for the encoding information of frame control heads after merging through message processing module 11 is deciphered and resolved.
The device of the analyzing frame control head coded message that the embodiment of the invention provides, by merging to encoding information of frame control heads FCH, improve its signal to noise ratio, the demodulation performance of encoding information of frame control heads FCH is also improved thereupon, thereby solve because the demodulation performance of FCH is lower than the demodulation performance to DL-MAP, and the problem of restriction terminal parses DL-MAP, the coverage of expansion WIMAX network.
Referring to Fig. 7, another structural representation of device of the parsing FCH that provides for the embodiment of the invention.
The device of the parsing FCH that present embodiment provides comprises information acquisition module 10, message processing module 11, decoding parsing module 12 in the device as shown in Figure 6, and its difference is that the message processing module 11 that present embodiment provides specifically comprises:
The device of the analyzing frame control head coded message that the embodiment of the invention provides, merge for two sections by the front and back that encoded content among the FCH is identical, improved the signal to noise ratio of FCH, the demodulation performance of FCH is improved thereupon, reduce the thresholding of resolving FCH, thereby solve because the demodulation performance of FCH is lower than the demodulation performance to DL-MAP, and the problem of restriction terminal parses DL-MAP, the coverage of expansion WIMAX network.
Referring to Fig. 6, another embodiment of the device of the parsing FCH that the embodiment of the invention provides is as follows equally:
Be with the difference of former device shown in Figure 6, message processing module 11 is not to merge after FCH is divided into identical two sections in the device that present embodiment provides, but at least two FCH with same-code content that utilize information acquisition module 10 to obtain merge, to improve the signal to noise ratio of FCH.
First kind of mode is: adopt Compressed MAP+Sub MAP mode to describe the MAP of ascending-descending subframes.Except that Zone Switch IE, other IE length is all fixed among this moment Compressed MAP.Set the maximum Zone Switch IE number N of an ascending-descending subframes then, in Compressed MAP, reserve and the corresponding byte length of setting of maximum Zone Switch IE number N, actual when issuing Compressed MAP, take in the reserved byte and the corresponding partial bytes of actual Zone Switch IE number, the byte of all the other reservations is empty, makes MAP have fixing length.When the mode of WIMAX network using Compressed MAP+Sub MAP is described MAP, the relevant information of CompressedMAP is only described among the FCH, the length of Compressed MAP is fixed, and the encoded content among the FCH is also just determined thereupon.
Mode is in second: adopt Compressed MAP+Sub MAP mode to describe the MAP of ascending-descending subframes, the Zone Switch IE that requires in the former agreement to issue in Compressed MAP changed into being carried among the Sub MAP issue, make Compressed MAP have fixing length, thereby the encoded content among the FCH is determined thereupon.
Decoding parsing module 12 is used for that the FCH after merging through message processing module 11 is deciphered the back and resolves.
The device of the parsing FCH that the enforcement embodiment of the invention provides has at FCH under the situation of identical encoded content, and a plurality of FCH are merged so that its signal to noise ratio to be provided.The device that present embodiment is carried can also be used with device as shown in Figure 7, further improve the signal to noise ratio of FCH, reduce the thresholding of resolving FCH, thereby solve because the demodulation performance of FCH is lower than the demodulation performance to DL-MAP, and the problem of restriction terminal parses DL-MAP, the coverage of expansion WIMAX network.
Referring to Fig. 8, be the network equipment example structure schematic diagram that the embodiment of the invention provides, as shown in the figure, this device comprises:
Map information describing module 20 is used for cooperating the mode of secondary mapping (CompressedMAP+Sub MAP) to describe DL-MAP and UL-MAP with compressing mapping.
Map information processing module 21, the map information that is used for ascending-descending subframes that described map information describing module 20 is described is handled the length of fixing described compressing mapping.
Frame control head generation module 22 is used for generating the encoding information of frame control heads FCH with fixing encoded content according to map information processing module 21 compressing mapping that handle, that have regular length.
Concrete, in the invention process, the mode of the length of map information processing module 21 fixing described compressing mapping is:
The Zone Switch IE that issues in compressing mapping Compressed MAP in the prior art changed into being carried among the Sub MAP issue.Because map information describing module 20 is described DL-MAP and UL-MAP in the mode of Compressed MAP+SubMAP, among the IE that comprise among the Compressed MAP this moment, except that Zone Switch IE number, other IE is that length is fixing, can't the length of MAP be impacted, therefore map information processing module 21 issues Zone Switch IE in Sub MAP, can make Compressed MAP have regular length, thereby the encoded content of FCH that is used to describe Compressed MAP relevant information is also fixing thereupon naturally.
Optionally, referring to Fig. 9, another example structure schematic diagram of the network equipment that provides for the embodiment of the invention, as shown in the figure, this network equipment comprises map information describing module 20, map information processing module 21, frame control head generation module 22 as shown in Figure 8 equally, difference is, the mode difference that the fixing described compressing mapping Compressed MAP length of the network equipment that present embodiment provides is adopted, thus make the structure of map information processing module 21 also different.
Map information processing module 21 comprises in the present embodiment:
Switch preset unit 210, be used to preset maximum region switch unit Zone Switch IE number N.The value of N depends on the specification of system design when implementing the embodiment of the invention, but is no more than the maximum of stipulating in the agreement.
Mapping processing unit 211, be used for according to switching the maximum region switch unit number N that preset unit 210 presets, in described compressing mapping Compressed MAP, reserve corresponding fixed byte, because among the IE that described compressing mapping Compressed MAP comprises, except that Zone Switch IE number, other IE is that length is fixing, can't the length of MAP be impacted, therefore in described compressing mapping CompressedMAP the byte that Zone Switch IE reserves regular length, just fixed the length of Compressed MAP, then the encoded content of FCH is also just fixing thereupon.When reality sends FCH, according to actual ZoneSwitch IE number, take part corresponding in the reserved byte, the byte of all the other reservations can be sky.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above disclosed is a kind of preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (14)
1, a kind of method of analyzing frame control head coded message is characterized in that, comprising:
Obtain encoding information of frame control heads;
The encoding information of frame control heads of obtaining is merged;
Encoding information of frame control heads after being combined is deciphered and is resolved.
2, the method for analyzing frame control head coded message as claimed in claim 1 is characterized in that, the described encoding information of frame control heads of obtaining is merged comprises:
The described encoding information of frame control heads of obtaining is divided into two sections of front and back, and the front and back of described encoding information of frame control heads have identical encoded content for two sections;
Front and back to described encoding information of frame control heads merge for two sections.
3, the method for analyzing frame control head coded message as claimed in claim 1 is characterized in that, the described encoding information of frame control heads of obtaining comprises:
Obtain at least two encoding information of frame control heads;
The then described encoding information of frame control heads of obtaining is merged comprises:
At least two encoding information of frame control heads obtaining are merged.
4, the method for analyzing frame control head coded message as claimed in claim 3 is characterized in that, the described encoding information of frame control heads of obtaining also comprises before:
Adopt compressing mapping to cooperate the mode of secondary mapping to describe the map information of ascending-descending subframes;
Preset the maximum region switch unit number in the ascending-descending subframes;
In described compressing mapping, reserve and the corresponding byte length of described maximum region switch unit number the actual regional switch unit that need issue of carrying in the byte length of described reservation;
Send described encoding information of frame control heads, comprise the relevant information of described compressing mapping in the described encoding information of frame control heads.
5, the method for analyzing frame control head coded message as claimed in claim 3 is characterized in that, the described encoding information of frame control heads of obtaining comprises before:
Adopt compressing mapping to cooperate the mode of secondary mapping to describe the map information of ascending-descending subframes;
Bearing area switch unit in described secondary map information,
Send encoding information of frame control heads, comprise the relevant information of described compressing mapping in the described encoding information of frame control heads.
6, as the method for each described analyzing frame control head coded message in the claim 1 to 5, it is characterized in that described merging into:
High specific merging, equal gain combining, selecting type merge or switch and merge.
7, a kind of device of analyzing frame control head coded message is characterized in that, comprising:
The information acquisition module is used to obtain encoding information of frame control heads;
Message processing module is used for the encoding information of frame control heads that described information acquisition module obtains is merged;
The decoding parsing module is used for the encoding information of frame control heads after merging through described message processing module is deciphered and resolved.
8, the device of analyzing frame control head coded message as claimed in claim 7 is characterized in that, described message processing module comprises:
Pretreatment module is used for the encoding information of frame control heads that described information acquisition module obtains is divided into two sections of front and back, and the front and back of described encoding information of frame control heads have identical encoded content for two sections;
Merge module, the front and back that are used for encoding information of frame control heads that described pretreatment module is separated merge for two sections, and the mode of described merging is high specific merging, equal gain combining, selecting type merges or switch and merge.
9, the device of analyzing frame control head coded message as claimed in claim 7 is characterized in that,
Described message processing module is used at least two encoding information of frame control heads that the information acquisition module obtains are merged, and the mode of described merging is high specific merging, equal gain combining, selecting type merges or switch merging.
10, a kind of network equipment is characterized in that, comprising:
The map information describing module is used for cooperating the mode of secondary mapping to describe the map information of ascending-descending subframes with compressing mapping;
The map information processing module, the map information that is used for ascending-descending subframes that described map information describing module is described is handled the length of fixing described compressing mapping;
The frame control head generation module is used for the compressing mapping according to described regular length, generates encoding information of frame control heads.
11, the network equipment as claimed in claim 10 is characterized in that, described map information processing module comprises:
Switch preset unit, be used to preset maximum region switch unit number;
The mapping processing unit, the regional switch unit number that is used for presetting according to described switching preset unit is reserved corresponding byte in described compressing mapping, the length of fixing described compressing mapping.
12, the network equipment as claimed in claim 10 is characterized in that,
Described map information processing module is used for that regional switch unit is carried on secondary map information and issues, the length of fixing described compressing mapping.
13, a kind of system of analyzing frame control head coded message is characterized in that, comprising: the device of the network equipment and parsing encoding information of frame control heads;
The described network equipment is used for sending encoding information of frame control heads to the device of described analyzing frame control head coded message;
The device of described analyzing frame control head coded message is used to obtain the encoding information of frame control heads that the described network equipment sends, and the encoding information of frame control heads of obtaining is merged, and the encoding information of frame control heads after the described merging is deciphered and resolved.
14, the system of analyzing frame control head coded message as claimed in claim 13 is characterized in that,
The described network equipment, the mode that also is used to select compressing mapping to cooperate secondary mapping is described the map information of ascending-descending subframes, and the length of fixing described compressing mapping information generates encoding information of frame control heads according to the compressing mapping of described regular length;
The device of described analyzing frame control head coded message also is used to obtain at least two described encoding information of frame control heads, and at least two encoding information of frame control heads obtaining are merged, and the encoding information of frame control heads after the described merging is deciphered and resolved.
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| CN104218956A (en) * | 2013-06-05 | 2014-12-17 | 中兴通讯股份有限公司 | Soft-bit decoding method and soft-bit decoding device for wireless receiving equipment |
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| JP2008042553A (en) * | 2006-08-07 | 2008-02-21 | Sony Corp | Transmission device, reception device, transmission system, modulation method, and demodulation method |
| CN101286753B (en) * | 2007-04-11 | 2012-11-14 | 中兴通讯股份有限公司 | Lead code sending and receiving method for wideband wireless communication system |
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| CN104218956A (en) * | 2013-06-05 | 2014-12-17 | 中兴通讯股份有限公司 | Soft-bit decoding method and soft-bit decoding device for wireless receiving equipment |
| CN104218956B (en) * | 2013-06-05 | 2019-04-26 | 中兴通讯股份有限公司 | A kind of the soft bit interpretation method and device of radio receiver |
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