CN101272586A - Radio communication system, access network, access terminal and its method for acquiring information - Google Patents
Radio communication system, access network, access terminal and its method for acquiring information Download PDFInfo
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- CN101272586A CN101272586A CNA2007100272805A CN200710027280A CN101272586A CN 101272586 A CN101272586 A CN 101272586A CN A2007100272805 A CNA2007100272805 A CN A2007100272805A CN 200710027280 A CN200710027280 A CN 200710027280A CN 101272586 A CN101272586 A CN 101272586A
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Abstract
The invention discloses a method for obtaining information from an access terminal in a wireless communication system, which comprises the following steps: after the access terminal is accessed in an access network, the access network monitors reverse signaling of the access terminal in a real-time manner and obtains deviation information of the access terminal; the access network generates corresponding deviation regulating information according to the deviation information; the access network assembles and generates deviation regulating messages according to the deviation regulating information and sends the deviation regulating messages to the access terminal; the access terminal receives the deviation regulating messages and obtains the deviation regulating information from the deviation regulating messages. The invention also discloses the corresponding access network, the access terminal and a wireless communication system. The access terminal of the invention can obtain the time deviation regulating information and/or frequency deviation regulating information and/or the power deviation regulating information from the access network rapidly and effectively.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of wireless communication system, access network, access terminal and obtain the method for information.
Background technology
In December, 2006, the 3G (Third Generation) Moblie collaborative project organizes the formal promulgation of 3GPP2 (3rd generationpartnership project 2) to propose UMB (Ultra Mobile Broadband, ultra broadband mobile communication system) system.UMB ultra broadband mobile communication system is in multiplexing OFDMA (the Orthogonal Frequency Division Multiplexing Access orthogonal frequency division multiplexing multiple access) technology that all adopts of preceding reverse data, promptly by different users being distributed different subcarriers be used for transmission and receiving data, thereby guarantee the orthogonality of each user resource allocation, realize the data multiplexing transmission.In UMB ultra broadband mobile communication system, resource allocating message all sends by forward shared channel, system can once send a plurality of resource allocating message, can be as shown in Figure 1 for the resource allocating message type structure of supporting, wherein BlockType type of message 0000～1101 totally 14 kinds of type of message sign indicating numbers all be defined, as BlockType type of message sign indicating number is to represent that this message was that AccessGrant inserts and permits message at 0000 o'clock, in existing UMB ultra broadband mobile communication system, the particular content of 1110 and 1,111 two type of message sign indicating numbers is also undefined.
In the conventional OFDMA system, in order to guarantee reliably transmission efficiently of data, time and Frequency Synchronization seem and are even more important.At backward channel, in order to realize time synchronized, the time that must guarantee the data arrival access network AN that all access terminal AT send in same time slot is synchronous, but because different AT is in different positions in inserting the sub-district, the former time from sub-district access point AT emission data far away can be early, and the time of nearer AT emission data then can be later relatively from the sub-district.
In existing UMB ultra broadband mobile communication system, when AT initially inserts AN, AT inserts UMB ultra broadband mobile communication system by send access probe on Reverse Access Channel RACH, AN is behind the reverse access probe that receives the AT emission, time and fiducial time according to its arrival compare, the propagation delay that draws AT also is the time offset information, AN sends the AccessGrant that carries the time adjustment information by forward shared channel to AT and inserts allowance message then, AT will adjust the launch time of data according to the time adjustment information, thereby all AT that guaranteed each diverse location are when initially inserting AN, the data of its back emitted can arrive AN at synchronization, thereby realized time synchronized, the form that message is permitted in the access of prior art is as shown in Table 1: wherein Block Type represents the type codes of resource assignation piece, its length is 4bit, the type codes that AccessGrant inserts the resource assignation piece of permitting message is 0000, MACID is a resource assignment information, is used to AT to distribute Reverse Dedicated Traffic Channel.
Table one:
| Block Type | MACID | Shortiming | |
| Length(bit) | 4(0000) | 9～11 | 6 |
Successfully insert AN at AT, also be after AT and AN are in connected state, because AT may constantly move, so the position of AT distance A N also may constantly change, therefore AT also is that time skew meeting constantly changes to the propagation delay of AN, so AN also needs constantly to send message to AT, inform its time offset information of AT, having defined the 3 signaling TimingCorrection time an of layer in existing UMB ultra broadband mobile communication system adjusts message, this signaling message sends by layer 3 Dedicated Traffic Channel, AN is before sending this message, must send layer 2 signaling FLAM resource allocating message to AT by forward shared channel and carry out the forward direction resource assignation, as can be seen, in the existing UMB system, AT and AN are when connection status, AN sends layer 2 resource allocating message by shared channel to AT earlier, and then according to described layer 2 resource allocating message distribute Dedicated Traffic Channel send the layer 3TimingCorrection time and adjust message, its implementation procedure more complicated, efficient is lower.
In existing UMB ultra broadband mobile communication system, when AT and AN are in connected state, how definition does not realize that AT obtains frequency offset information and power offset information from AN, and because the complexity and the irregularities of wireless environment, and AT also may produce Doppler frequency shift constantly moving, therefore, frequency shift (FS) may take place, and simultaneously because AT may constantly move, the distance of itself and AN may constantly change, therefore, power excursion also may take place.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of access network, has accessed terminal, the method for wireless communication system and the information of obtaining that accesses terminal, be used for being implemented in wireless communication systems such as ultra broadband mobile communication system or OFDMA system, access terminal insert access network after, promptly access terminal when being in connected state, access terminal from access network acquisition time skew adjustment information and/or frequency shift (FS) adjustment information and/or power excursion adjustment information with access network.
In order to reach the foregoing invention purpose, the embodiment of the invention proposed to access terminal in the wireless communication system method of the information of obtaining, this method may further comprise the steps:
Behind the access access network that accesses terminal, access network is monitored in real time and is accessed terminal reverse signal and obtain the offset information that accesses terminal;
Access network generates corresponding skew adjustment information according to described offset information;
Access network generates skew according to described skew adjustment information assembling and adjusts message, and adjusts message to the described skew of transmission that accesses terminal;
Accessing terminal receives described skew adjustment message, and obtains the skew adjustment information from described skew adjustment message.
Wherein, described offset information comprises at least a in time migration information, frequency offset information and the power offset information;
Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information.
Correspondingly, the embodiment of the invention has proposed a kind of access network, comprising:
Offset information monitoring acquiring unit is used for after the access that accesses terminal, and monitors in real time to access terminal reverse signal and obtain the offset information that accesses terminal;
Skew adjustment information generation unit is used for generating corresponding skew adjustment information according to the described offset information monitoring described offset information that acquiring unit obtained;
Be offset and adjust the message module units, link to each other with described skew adjustment information generation unit, be used for assembling and generate skew adjustment message, described skew is adjusted message and is comprised skew adjustment information sign and identify corresponding skew adjustment information with this skew adjustment;
Message sending unit is adjusted in skew, is used for sending described skew to accessing terminal and adjusts message.
Wherein, described offset information comprises at least a in time migration information, frequency offset information and the power offset information;
Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information.
In addition, the embodiment of the invention has also proposed a kind of accessing terminal, and comprising:
The message sink unit is adjusted in skew, and message is adjusted in the skew that is used to receive from access network;
Skew adjustment information acquiring unit is used for the skew adjustment information sign according to received skew adjustment message, obtains with this skew adjustment information and identifies corresponding skew adjustment information;
Adjust performance element, be used for adjusting accordingly according to the skew adjustment information of obtaining.
Further, the embodiment of the invention has also proposed a kind of wireless communication system, comprising:
Access network, be used for behind this access network of access that accesses terminal, monitor in real time and access terminal reverse signal and obtain the offset information that accesses terminal, and according to the corresponding skew of described offset information generation adjustment information, and assemble the generation skew according to described skew adjustment information and adjust message, and send described skew adjustment message to accessing terminal;
Access terminal, message is adjusted in the skew that is used to receive from access network, and, obtain with this skew adjustment information and identify corresponding skew adjustment information, and adjust accordingly according to the offset information that obtains according to the skew adjustment information sign in the received skew adjustment message.
From technique scheme as can be seen, in embodiments of the present invention, behind the access access network that accesses terminal, access network is monitored in real time and is accessed terminal reverse signal and obtain the offset information that accesses terminal, described offset information comprises at least a in time migration information, frequency offset information and the power offset information, and generating corresponding skew adjustment information according to described offset information, described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information; And according to described skew adjustment information assembling generates skew and adjusts message, and send described skew to accessing terminal and adjust message, access terminal receive described skew and adjust message after, adjust the message from described skew and to obtain the skew adjustment information.Therefore, the embodiment of the invention, be implemented in the wireless communication systems such as ultra broadband mobile communication system or OFDMA system, access terminal insert access network after, promptly access terminal when being in connected state with access network, access terminal can be fast and efficiently from access network acquisition time skew adjustment information and/or frequency shift (FS) adjustment information and/or power excursion adjustment information can adjust corresponding launch time and/or tranmitting frequency and/or transmitting power according to the skew adjustment information so that access terminal.
Description of drawings
Fig. 1 is the resource allocating message piece schematic diagram that defines in the ultra broadband mobile communication system in the prior art;
Fig. 2 is that a kind of wireless communication system of the embodiment of the invention is formed schematic diagram;
Fig. 3 is the composition schematic diagram of a kind of access network of the embodiment of the invention;
Fig. 4 is a kind of composition schematic diagram that accesses terminal of the embodiment of the invention;
Fig. 5 is the access terminal first embodiment schematic flow sheet of method of the information of obtaining of the present invention;
Fig. 6 is the access terminal second embodiment schematic flow sheet of method of the information of obtaining of the present invention.
Embodiment
For the technical scheme and the advantage that make the embodiment of the invention is clearer, the embodiment of the invention is further elaborated below in conjunction with the accompanying drawing embodiment that develops simultaneously.
In wireless communication systems such as ultra broadband mobile communication system or OFDMA system, access network and access terminal between business datum by a plurality of Dedicated Traffic Channels parallel transmissions simultaneously, in order to realize Control on Communication, at first need each to be accessed terminal and carry out Dedicated Traffic Channel resource assignation and scheduling by shared channel to Dedicated Traffic Channel.
Fig. 2 is that a kind of wireless communication system of the embodiment of the invention is formed schematic diagram, and as shown in the figure, wireless communication system mainly comprises among this embodiment: access network 1 and access terminal 2, wherein:
Herein, described offset information comprises at least a in time migration information, frequency offset information and the power offset information; Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information.Described skew adjustment information sign is used to distinguish the particular type of skew adjustment information, and its specific implementation form is explained in further detail below.
Below the access network in the above-mentioned wireless communication system 1 is elaborated, Fig. 3 is the composition schematic diagram of a kind of access network of the embodiment of the invention, and as shown in the figure, this access network mainly comprises:
Offset information monitoring acquiring unit 11, be used for access terminal 2 insert these access networks after, access terminal 1 offset information of the reverse signal that monitoring in real time accesses terminal and obtaining.
Herein, described offset information comprises at least a in time migration information, frequency offset information and the power offset information.Described time migration information is that the business datum that sends that accesses terminal arrives the real time of access network access point and the side-play amount of fiducial time, because the moving direction that accesses terminal is uncertain, may be towards moving near access network access point direction, also may be towards moving away from access network access point direction, the time of the therefore described business datum arrival access network access point that accesses terminal may be in advance fiducial time, therefore also may be delayed fiducial time, the described time migration information data message that is a tape symbol (plus or minus).Described frequency offset information is the side-play amount of actual bearer subcarrier centre frequency and the corresponding subcarrier reference center frequency of system assignment of each sub-carrier channels of the described access network that accesses terminal, with the time migration info class seemingly, when the present invention specifically implemented, described frequency offset information also was the data message of signed (plus or minus).The deviation of the described power offset information sub-carrier signal transmitting power that accesses terminal that to be the power of sub-carrier signal of the received emission that accesses terminal of described access network and system determine with the factors such as distance of access network according to accessing terminal, similar with time migration information and frequency offset information, described power offset information also is the data message of signed (plus or minus).Behind the access access network that accesses terminal, also promptly access terminal and access network when being in connected state, access network needs in real time constantly monitoring to estimate from each reverse signal that accesses terminal and to the time migration information that accesses terminal and/or frequency offset information and/or power offset information, its specific implementation process belongs to prior art and does not belong to the place of core of the present invention, so do not repeat them here.
Skew adjustment information generation unit 12 is used for generating corresponding skew adjustment information according to the described offset information that described offset information monitoring acquiring unit 11 is obtained.
Herein, described access network sends described skew by forward shared channel to accessing terminal and adjusts message.Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information.The skew adjustment information sign that message carries the skew adjustment information and is used to distinguish this skew adjustment information type is adjusted in described skew, to 2 purposes that send described skew adjustment message that access terminal is the skew adjustment information to be informed access terminal, and finishes the adjustment of corresponding launch time, tranmitting frequency or transmitting power according to the skew adjustment information so that access terminal.Be that UMB ultra broadband mobile communication system is an example with the described wireless communication system of the embodiment of the invention below, described wireless communication system is further elaborated.
The BlockType message blocks type identification of the resource allocating message that defines in existing UMB ultra broadband mobile communication system standard is 4 Bit datas, its maximum can provide 16 types forward direction resource allocating message, and described forward direction resource allocating message all is to access terminal to finish corresponding resource assignation to sending to by forward shared channel.1 as can be known with reference to the accompanying drawings, the all occupied definition of 14 kinds of message blocks type identifications of 0000 to 1101 scope, consider that in order to guarantee the extensibility of UMB ultra broadband mobile communication system standard one embodiment of the present invention are for by being that 0000 AccessGrant inserts and permits expanding on the message basis improvement and adjust message to realize the described skew of the embodiment of the invention at existing BlockType message blocks type identification.AccessGrant in the existing UMB ultra broadband mobile communication system insert permit message structure as shown in Table 2:
Table two:
| BlockType | MACID | Shortiming | |
| Length(bit) | 4(0000) | 9～11 | 6 |
The described AccessGrant of the embodiment of the invention insert permit message structure as table three to shown in the table six:
Table three:
| BlockType | Flag | MACID | Shortiming | Total Length |
| Length | 4(0000) | 2 | 9～11 | 6 | |
| AccessGrant | 0000 | 00 | Resource assignment information | Time adjustment amount information | 19～21 |
Table four:
| Block Type | Flag | Adjuestment | Total Length | |
| Length | 4(0000) | 2 | 16 | |
| |
0000 | 01 | The time migration adjustment information | 22 |
Table five:
| BlockType | Flag | Adjuestment | Total Length | |
| Length | 4(0000) | 2 | 16 | |
| |
0000 | 10 | The frequency shift (FS) adjustment information | 22 |
Table six:
| Block Type | Flag | Adjuestment | Total Length | |
| Length | 4(0000) | 2 | 16 | |
| |
0000 | 11 | The power excursion adjustment information | 22 |
Wherein, Flag is skew adjustment information sign, when being designated 00, Flag skew adjustment information represents that this message is that message is permitted in the AccessGrant access of access network when response accesses terminal initially access request, at this moment, access terminal and to resolve MACID resource assignment information and the Shortiming time adjustment amount information obtained according to existing mode.
Represent that when Flag skew adjustment information is designated 01 this message is that message is adjusted in the access network time migration that access network sends to accessing terminal when being in connected state in accessing terminal, the Adjuestment adjustment information of resolving 16 bits that obtain of accessing terminal this moment is the time migration adjustment information of 16 bits.
Represent that when Flag skew adjustment information is designated 10 this message is that message is adjusted in the access network frequency shift (FS) that access network sends to accessing terminal when being in connected state in accessing terminal, the Adjuestment adjustment information of resolving 16 bits that obtain of accessing terminal this moment is the frequency shift (FS) adjustment information of 16 bits.
Represent that when Flag skew adjustment information is designated 11 this message is that the access network power excursion that access network sends to accessing terminal when being in connected state in accessing terminal is adjusted message, the Adjuestment adjustment information of resolving 16 bits that obtain of accessing terminal this moment is the power excursion adjustment information of 16 bits.
Access network with access terminal when being in disconnected attitude, access terminal when receiving Flag=01,10 or 11 AccessGrant message, access terminal and will directly abandon this message; Access network with access terminal when being in connected state, when accessing terminal the AccessGrant message that receives Flag=00, accessing terminal also will directly abandon this message.
The skew adjustment information of described 16 bits of the embodiment of the invention is one the data message of symbol to be arranged, promptly have just having negative, for the time migration adjustment information, if adjustment amount is a positive number, represent that then shifting to an earlier date so much time sends, if adjustment amount is a negative, represent that then delaying so much time sends, for more precise time adjustment information is provided, described time adjustment information can be the data message of a tape unit, and access network also can consult to determine the unit of described time adjustment amount in advance with accessing terminal certainly.
For the frequency adjustment information, if adjustment amount is a positive number, so much frequency of then representing to move to right sends, if adjustment amount is a negative, so much frequency of then representing to move to left sends, for more accurate frequency adjustment information is provided, described frequency adjustment information can be the data message of a tape unit, and access network also can consult to determine the unit of described frequency adjustment amount in advance with accessing terminal certainly.
For the power adjustment information, if adjustment amount is a positive number, then the so much power of expression increase sends, if adjustment amount is a negative, then the so much power of expression reduction sends, for more accurate power adjustment information is provided, described power adjustment information can be the data message of a tape unit, and access network also can consult to determine the unit of described power adjustment in advance with accessing terminal certainly.
The another kind of execution mode of the embodiment of the invention is forward direction resource allocating message based on shared channel of redetermination, as message is adjusted in the Adjuestment skew that increases a piece of news block type BlockType=1110 (can certainly be 1111), in one embodiment, its structure as shown in Table 7.
Table seven:
| Block Type | SubType | Adjuestment | Total Length |
| Length(bit) | 4 | 2 | 16 | |
| |
1110 | 00 | The time migration adjustment information | 22 |
| |
1110 | 01 | The frequency shift (FS) adjustment information | 22 |
| |
1110 | 10 | The power excursion adjustment information | 22 |
Wherein when message identifier SubType=00 is adjusted in skew, represent that this message is that message TimingAdjuestment is adjusted in time migration, the structure of the 16 bit time migration adjustment information that it carries is identical or similar when insert permitting based on AccessGrant that extension of message realizes, so this will not give unnecessary details again; When message identifier SubType=01 is adjusted in skew, represent that this message is that message OffFrequencyAdjuestment is adjusted in frequency shift (FS), its 16 bit frequencies of carrying are identical or similar when being offset the structure of adjustment information and inserting the realization of allowance extension of message based on AccessGrant, so do not repeat them here; When message identifier SubType=10 is adjusted in skew, represent that this message is that power excursion is adjusted message PowerAdjuestment, its 16 bit powers that carry are identical or similar when being offset the structure of adjustment information and inserting the realization of allowance extension of message based on AccessGrant, so do not repeat them here.
In addition, in existing UMB ultra broadband mobile communication system, in the implementation method that accesses terminal and do not provide when being in connected state the frequency adjustment that accesses terminal and power to adjust with access network, also proposed in embodiments of the present invention to realize corresponding tranmitting frequency adjustment and transmitting power adjustment based on layer 3 message of Dedicated Traffic Channel, keeping on the layer 3TimingCorrection message basis based on Dedicated Traffic Channel of prior art, the embodiment of the invention has defined layer 3OffFrequencyAdjustment frequency shift (FS) adjustment message and layer 3PowerAdjustment power excursion adjustment message is respectively applied for the adjustment that realizes corresponding tranmitting frequency and transmitting power, the similar that message and PowerAdjustment power excursion are adjusted the TimingCorrection message of the structure of message and prior art is adjusted in described OffFrequencyAdjustment frequency shift (FS), this not with give unnecessary details.
Below accessing terminal in the described wireless communication system of the embodiment of the invention 2 is elaborated, Fig. 4 is a kind of composition schematic diagram that accesses terminal of the embodiment of the invention, and as shown in the figure, this accesses terminal and mainly comprises:
Message sink unit 21 is adjusted in skew, and message is adjusted in the skew that is used to receive from access network.
Skew adjustment information acquiring unit 22 is used for the skew adjustment information sign according to received skew adjustment message, obtains with this skew adjustment information and identifies corresponding offset information.
Adjust performance element 23, be used for adjusting accordingly according to the skew adjustment information of obtaining.
Herein, described adjustment performance element 23 comprises that adjusting performance element 231, tranmitting frequency launch time adjusts performance element 232 and transmitting power and adjust at least a in the performance element 233.
Adjust performance element 231 launch time, be used for according to described time migration adjustment information adjusting accordingly launch time.
Tranmitting frequency is adjusted performance element 232, is used for according to described frequency shift (FS) adjustment information tranmitting frequency being adjusted accordingly.
Transmitting power is adjusted performance element 233, is used for according to described power excursion adjustment information transmitting power being adjusted accordingly.
In addition, the embodiment of the invention also provides in a kind of wireless communication system, access terminal and obtain the method for offset information, during concrete enforcement, described method is applied in OFDMA system and/or the ultra broadband mobile communication system, below by embodiment it is specifically described, Fig. 5 is the access terminal first embodiment schematic flow sheet of method of the information of obtaining of the present invention, may further comprise the steps:
Step s301, the access access network that accesses terminal is set up session connection with access network.
Step s302, access network monitor and access terminal reverse signal and obtain the offset information that accesses terminal.
Herein, described offset information comprises at least a in time migration information, frequency offset information and the power offset information.Described time migration information is that the business datum that sends that accesses terminal arrives the real time of access network access point and the side-play amount of fiducial time, because the moving direction that accesses terminal is uncertain, may be towards moving near access network access point direction, also may be towards moving away from access network access point direction, the time of the therefore described business datum arrival access network access point that accesses terminal may be in advance fiducial time, therefore also may be delayed fiducial time, the described time migration information data message that is a tape symbol (plus or minus).Described frequency offset information is the side-play amount of actual bearer wavelet centre frequency and the corresponding subcarrier reference center frequency of system assignment of each sub-carrier channels of the described access network that accesses terminal, with the time migration info class seemingly, when the present invention specifically implemented, described frequency offset information also was the data message of signed (plus or minus).The deviation of the described power offset information sub-carrier signal transmitting power that accesses terminal that to be the power of sub-carrier signal of the received emission that accesses terminal of described access network and system determine with the factors such as distance of access network according to accessing terminal, similar with time migration information and frequency offset information, described power offset information also is the data message of signed (plus or minus).Behind the access access network that accesses terminal, also promptly access terminal and access network when being in connected state, access network needs in real time access terminal reverse signal and from wherein obtaining time migration information and/or frequency offset information and/or the power offset information that accesses terminal of constantly monitoring, its specific implementation process is similar to prior art and does not belong to the place of core of the present invention, thus this not with give unnecessary details.
Step s303, access network generates corresponding skew adjustment information according to described offset information.
Step s304, the AccessGrant that the access network assembling generates based on forward shared channel inserts allowance message, and described AccessGrant access is permitted message and comprised skew adjustment information sign and identify corresponding skew adjustment information with this skew adjustment information.
Step s305, access network send described AccessGrant and insert allowance message to accessing terminal.
Herein, the access network of setting send AccessGrant message by forward control channel to described accessing terminal.
Step s306, accessing terminal receives described AccessGrant access allowance message.
Step s307 accesses terminal and inserts the skew adjustment information sign of permitting in the message according to described AccessGrant, obtains with this skew adjustment information and identifies corresponding skew adjustment information.
Described AccessGrant insert permit message as table three to shown in the table six, wherein, Flag is skew adjustment information sign, when being designated 00, Flag skew adjustment information represents that this message is that the AccessGrant of access network when response accesses terminal the access request inserts allowance message, at this moment, access terminal and to resolve MACID resource assignment information and the Shortiming time adjustment amount information obtained according to existing mode.
Represent that when Flag skew adjustment information is designated 01 this message is that message is adjusted in the access network time migration that access network sends to accessing terminal when being in connected state in accessing terminal, the Adjuestment adjustment information of resolving 16 bits that obtain of accessing terminal this moment is the time migration adjustment information of 16 bits.
Represent that when Flag skew adjustment information is designated 10 this message is that message is adjusted in the access network frequency shift (FS) that access network sends to accessing terminal when being in connected state in accessing terminal, the Adjuestment adjustment information of resolving 16 bits that obtain of accessing terminal this moment is the frequency shift (FS) adjustment information of 16 bits.
Represent that when Flag skew adjustment information is designated 11 this message is that the access network power excursion that access network sends to accessing terminal when being in connected state in accessing terminal is adjusted message, the Adjuestment adjustment information of resolving 16 bits that obtain of accessing terminal this moment is the power excursion adjustment information of 16 bits.
Access network with access terminal when being in disconnected attitude, access terminal when receiving Flag=01,10 or 11 AccessGrant message, access terminal and will directly abandon this message; Access network with access terminal when being in connected state, when accessing terminal the AccessGrant message that receives Flag=00, accessing terminal also will directly abandon this message.
The skew adjustment information of described 16 bits of the embodiment of the invention is one the data message of symbol to be arranged, promptly have just having negative, for the time migration adjustment information, if adjustment amount is a positive number, represent that then shifting to an earlier date so much time sends, if adjustment amount is a negative, represent that then delaying so much time sends, for more precise time adjustment information is provided, described time adjustment information can be the data message of a tape unit, and access network also can consult to determine the unit of described time adjustment amount in advance with accessing terminal certainly.
For the frequency adjustment information, if adjustment amount is a positive number, so much frequency of then representing to move to right sends, if adjustment amount is a negative, so much frequency of then representing to move to left sends, for more accurate frequency adjustment information is provided, described frequency adjustment information can be the data message of a tape unit, and access network also can consult to determine the unit of described frequency adjustment amount in advance with accessing terminal certainly.
For the power adjustment information, if adjustment amount is a positive number, then the so much power of expression increase sends, if adjustment amount is a negative, then the so much power of expression reduction sends, for more accurate power adjustment information is provided, described power adjustment information can be the data message of a tape unit, and access network also can consult to determine the unit of described power adjustment in advance with accessing terminal certainly.
In addition, in conjunction with Fig. 6, access terminal second embodiment of the method for obtaining offset information of the present invention is elaborated, Fig. 6 is the schematic flow sheet of second embodiment of the present invention's method of obtaining offset information, during specific implementation, mainly may further comprise the steps:
Step s401, the access access network that accesses terminal is set up session connection with access network.
Step s402, access network monitor and access terminal reverse signal and obtain the offset information that accesses terminal.
Herein, the offset information that described offset information and the present invention obtain described in first embodiment of method of offset information is identical or similar, no longer repeats to give unnecessary details at this.
Step s403, access network generates corresponding skew adjustment information according to described offset information.
Step s404, the access network assembling generates based on the Adjuestment skew of shared channel and adjusts message, and described Adjuestment skew is adjusted message and is comprised skew adjustment information sign and identify corresponding skew adjustment information with this skew adjustment information.
Step s405, access network send described Adjuestment skew and adjust message to accessing terminal.
Herein, described access network sends Adjuestment skew adjustment message by forward control channel to described accessing terminal.
Step s406, accessing terminal receives described Adjuestment skew adjustment message.
Step s407, the skew adjustment information of adjusting in the message according to described Adjuestment skew that accesses terminal identifies, and obtains with this skew adjustment information and identifies corresponding skew adjustment information.
It is a forward direction resource allocating message based on shared channel of present embodiment redetermination that message is adjusted in described Adjuestment skew, during specific implementation, and its message blocks type B lockType=1110 (can certainly be 1111).In one embodiment, its structure as shown in Table 7.
Wherein when message identifier SubType=00 is adjusted in skew, represent that this message is that message TimingAdjuestment is adjusted in time migration, the structure of the 16 bit time migration adjustment information that it carries is identical or similar when insert permitting based on AccessGrant that extension of message realizes, so this will not give unnecessary details again; When message identifier SubType=01 is adjusted in skew, represent that this message is that message OffFrequencyAdjuestment is adjusted in frequency shift (FS), its 16 bit frequencies of carrying are identical or similar when being offset the structure of adjustment information and inserting the realization of allowance extension of message based on AccessGrant, so do not repeat them here; When message identifier SubType=10 is adjusted in skew, represent that this message is that power excursion is adjusted message PowerAdjuestment, its 16 bit powers that carry are identical or similar when being offset the structure of adjustment information and inserting the realization of allowance extension of message based on AccessGrant, so do not repeat them here.
Access terminal first embodiment of method of the information of obtaining and the skew described in second embodiment of the present invention adjusted the skew that message all is based on layer 2 shared channel and adjusted message in sum, thereby realized accessing terminal when being in connected state with access network, access terminal can be fast and efficiently from access network acquisition time skew adjustment information and/or frequency shift (FS) adjustment information and/or power excursion adjustment information can adjust corresponding launch time and/or tranmitting frequency and/or transmitting power according to the skew adjustment information so that access terminal.
Be similar in the prior art, when connected state, access terminal and adjust the implementation method of acquisition time offset information the message from the layer 3 signaling TimingCorrection time migration that come from access network, access terminal the 3rd embodiment of method of the information of obtaining of the present invention adjusts message and adjusts message based on the layer 3 signaling PowerAdjuestment power excursion of Dedicated Traffic Channel by the layer 3 signaling OffFrequencyAdjuestment frequency shift (FS) based on Dedicated Traffic Channel that increase redetermination, obtain correspondent frequency skew adjustment information and power excursion adjustment information to realize respectively accessing terminal, certainly access network also can be with time migration information, whole or any two kinds combination in frequency offset information and the power offset information is assembled in same layer 3 skew based on Dedicated Traffic Channel and adjusts in the message, obtains corresponding skew adjustment information to realize accessing terminal and is used to adjust accordingly.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. the method for the information of obtaining that accesses terminal in the wireless communication system is characterized in that this method may further comprise the steps:
Behind the access access network that accesses terminal, access network is monitored in real time and is accessed terminal reverse signal and obtain the offset information that accesses terminal;
Access network generates corresponding skew adjustment information according to described offset information;
Access network generates skew according to described skew adjustment information assembling and adjusts message, and adjusts message to the described skew of transmission that accesses terminal;
Accessing terminal receives described skew adjustment message, and obtains the skew adjustment information from described skew adjustment message.
2. the method for claim 1 is characterized in that:
Described offset information comprises at least a in time migration information, frequency offset information and the power offset information;
Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information.
3. method as claimed in claim 2, it is characterized in that, it is the message based on shared channel that the access network assembling generates that message is adjusted in described skew, and described skew is adjusted message and comprised skew adjustment information sign and identify corresponding skew adjustment information with this skew adjustment information; Or
It is the message based on Dedicated Traffic Channel that the access network assembling generates that message is adjusted in described skew, and described skew is adjusted message and comprised skew adjustment information sign and identify corresponding skew adjustment information with this skew adjustment information.
4. method as claimed in claim 3 is characterized in that, described step accesses terminal and receives described skew and adjust message, and adjusts from described skew and to obtain the skew adjustment information the message and be:
Accessing terminal receives described skew adjustment message, and according to the skew adjustment information sign in the received skew adjustment message, obtains and be offset adjustment information and identify corresponding skew adjustment information.
5. method as claimed in claim 4 is characterized in that, the length of described skew adjustment information sign is 2 bits; The length of described skew adjustment information is 16 bits.
6. as each described method of claim 1 to 5, it is characterized in that described access network sends described skew adjustment message by forward shared channel or Dedicated Traffic Channel to described accessing terminal.
7. as each described method of claim 1 to 5, it is characterized in that, be applied in the OFDMA system.
8. as each described method of claim 1 to 5, it is characterized in that, be applied in the ultra broadband mobile communication system.
9. an access network is characterized in that, comprising:
Offset information monitoring acquiring unit is used for after the access that accesses terminal, and monitors in real time to access terminal reverse signal and obtain the offset information that accesses terminal;
Skew adjustment information generation unit is used for generating corresponding skew adjustment information according to the described offset information monitoring described offset information that acquiring unit obtained;
Be offset and adjust the message module units, link to each other with described skew adjustment information generation unit, be used for assembling and generate skew adjustment message, described skew is adjusted message and is comprised skew adjustment information sign and identify corresponding skew adjustment information with this skew adjustment;
Message sending unit is adjusted in skew, is used for sending described skew to accessing terminal and adjusts message.
10. access network as claimed in claim 9 is characterized in that:
Described offset information comprises at least a in time migration information, frequency offset information and the power offset information;
Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information.
11. access network as claimed in claim 10 is characterized in that, described skew is adjusted message sending unit and is sent described skew adjustment message to accessing terminal by forward shared channel or Dedicated Traffic Channel.
12. one kind accesses terminal, and it is characterized in that, comprising:
The message sink unit is adjusted in skew, and message is adjusted in the skew that is used to receive from access network;
Skew adjustment information acquiring unit is used for the skew adjustment information sign according to received skew adjustment message, obtains with this skew adjustment information and identifies corresponding skew adjustment information;
Adjust performance element, be used for adjusting accordingly according to the skew adjustment information of obtaining.
13. as claimed in claim 12 accessing terminal is characterized in that:
Described skew adjustment information comprises at least a in time migration adjustment information, frequency shift (FS) adjustment information and the power excursion adjustment information;
Described adjustment performance element comprises that adjusting performance element, tranmitting frequency launch time adjusts performance element and transmitting power and adjust at least a in the performance element, wherein:
Adjust performance element launch time, be used for according to described time migration adjustment information adjusting accordingly launch time;
Tranmitting frequency is adjusted performance element, is used for according to described frequency shift (FS) adjustment information tranmitting frequency being adjusted accordingly;
Transmitting power is adjusted performance element, is used for according to described power excursion adjustment information transmitting power being adjusted accordingly.
14. a wireless communication system is characterized in that, comprising:
Access network, be used for after the access that accesses terminal, monitor in real time and access terminal reverse signal and obtain the offset information that accesses terminal, and according to the corresponding skew of described offset information generation adjustment information, and assemble the generation skew according to described skew adjustment information and adjust message, and send described skew adjustment message to accessing terminal;
Access terminal, message is adjusted in the skew that is used to receive from access network, and, obtain with this skew adjustment information and identify corresponding skew adjustment information, and adjust accordingly according to the offset information that obtains according to the skew adjustment information sign in the received skew adjustment message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100272805A CN101272586A (en) | 2007-03-23 | 2007-03-23 | Radio communication system, access network, access terminal and its method for acquiring information |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100272805A CN101272586A (en) | 2007-03-23 | 2007-03-23 | Radio communication system, access network, access terminal and its method for acquiring information |
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| CN101272586A true CN101272586A (en) | 2008-09-24 |
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| CNA2007100272805A Pending CN101272586A (en) | 2007-03-23 | 2007-03-23 | Radio communication system, access network, access terminal and its method for acquiring information |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017117812A1 (en) * | 2016-01-08 | 2017-07-13 | 华为技术有限公司 | Information sending method, apparatus and system |
| CN112911541A (en) * | 2019-11-19 | 2021-06-04 | 通用汽车环球科技运作有限责任公司 | Determination of local time at vehicle ignition |
| CN115039457A (en) * | 2020-12-25 | 2022-09-09 | 北京小米移动软件有限公司 | Communication processing method, communication processing device, communication equipment and storage medium |
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2007
- 2007-03-23 CN CNA2007100272805A patent/CN101272586A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017117812A1 (en) * | 2016-01-08 | 2017-07-13 | 华为技术有限公司 | Information sending method, apparatus and system |
| CN108432318A (en) * | 2016-01-08 | 2018-08-21 | 华为技术有限公司 | Method for sending information, device and system |
| CN108432318B (en) * | 2016-01-08 | 2021-01-01 | 华为技术有限公司 | Information sending method, device and system |
| CN113163373A (en) * | 2016-01-08 | 2021-07-23 | 华为技术有限公司 | Information sending method, device and system |
| US11678277B2 (en) | 2016-01-08 | 2023-06-13 | Huawei Technologies Co., Ltd. | Method, apparatus and system for indicating carrier frequency offset |
| CN112911541A (en) * | 2019-11-19 | 2021-06-04 | 通用汽车环球科技运作有限责任公司 | Determination of local time at vehicle ignition |
| CN112911541B (en) * | 2019-11-19 | 2024-04-19 | 通用汽车环球科技运作有限责任公司 | Determination of local time when vehicle is ignited |
| CN115039457A (en) * | 2020-12-25 | 2022-09-09 | 北京小米移动软件有限公司 | Communication processing method, communication processing device, communication equipment and storage medium |
| CN115039457B (en) * | 2020-12-25 | 2024-01-16 | 北京小米移动软件有限公司 | Communication processing method, device, communication equipment and storage medium |
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