CN101409926B - Method for requesting and distributing carrier resource - Google Patents
Method for requesting and distributing carrier resource Download PDFInfo
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- CN101409926B CN101409926B CN2007101525558A CN200710152555A CN101409926B CN 101409926 B CN101409926 B CN 101409926B CN 2007101525558 A CN2007101525558 A CN 2007101525558A CN 200710152555 A CN200710152555 A CN 200710152555A CN 101409926 B CN101409926 B CN 101409926B
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Abstract
The invention discloses a method for applying for and allocating carrier wave resources. In the process of continuous service connection, a user station selects to send a relative carrier wave resources application message or an absolute carrier wave resources application message according to the quality of a communication link to request a base station to allocate the carrier wave resources. By adopting the method, in the process of the continuous service connection, the quality of the current communication link is taken as a basic for determining whether the absolute or relative carrier wave resources application message is sent to the base station, thus reducing the volume of the carrier wave resources application message and ensuring the purpose that the base station can timely and accurately connect and allocate the volume of the carrier wave resources to the user station.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of carrier resource applying and distribution method.
Background technology
In recent years, in the new generation broadband wireless communication system, OFDM (OFDM) technology had become the basic transmission technology of main flow.
Next generation mobile communication system is mainly based on the mode of OFDMA (orthogonal frequency division multiplexing multiple access access); Under given system bandwidth; See that from the angle of frequency domain different subscriber stations is realized the purpose that multiple access inserts through the different orthogonal sub-carrier resources that takies some.Usually, when the business connection is set up and in the professional connection time-continuing process, subscriber station applies for to the base station that through sending carrier resource applying message to the base station orthogonal sub-carriers resource of some is come service data transmission.Set up in the process in the business connection, usually owing to the variation of required data amount transmitted, subscriber station connects required carrier resource to be changed in time and changes.In case if the carrier resource demand changes, subscriber station just sends the carrier resource of new size again to the base station, then the expense of carrier resource applying message can be bigger.A kind of feasible solution is to connect in the time-continuing process in business, and carrier resource applying message only need be carried relative carrier resource size.Yet the carrier resource mode of this relative size is connected actual want to apply for different owing to the reason of information drop-out can cause the base station to connect the carrier resource that distributes to subscriber station with subscriber station when bad channel conditions.
In order to overcome the big or insecure shortcoming of message overhead that above-mentioned carrier resource applying and distribution method exist; A kind of carrier resource applying and distribution method need be provided; It is big to extenuate the carrier resource applying message overhead, can avoid the unreliable inconsistent situation of resource size that causes base station actual allocated resource to be connected application with subscriber station of transmission of messages again.
Summary of the invention
The technical problem that the present invention will solve provides a kind of carrier resource applying and distribution method, and it is big to extenuate the carrier resource applying message overhead, can avoid the unreliable base station actual allocated resource that causes of transmission of messages to be connected the inconsistent situation of application with subscriber station again.
In order to address the above problem; The invention provides a kind of carrier resource applying and distribution method; In business connected time-continuing process, subscriber station was selected to send relative carrier resource applying message or absolute carrier resource applying message is asked the base station assigns carrier resource to the base station according to communication link quality.
Carrier resource applying of the present invention and distribution method wherein, may further comprise the steps:
(1) subscriber station is set up professional the connection with the base station, and subscriber station sends absolute carrier resource applying message to the base station, and said absolute carrier resource applying message is carried the absolute carrier resource size of application; The base station is the carrier resource that the business of subscriber station connects the absolute carrier resource size of distributing said application;
(2) connect in the time-continuing process in business; Subscriber station is judged when the carrier resource of base station assigns can not satisfy the needs of professional connection; The signal to noise ratio of the communication link of current detection and the thresholding that is provided with are in advance compared; When the signal to noise ratio of detected communication link during, go to step (3) greater than the thresholding that is provided with in advance; When the signal to noise ratio of detected communication link during, go to step (4) less than the thresholding that is provided with in advance; When business connects disconnection, process ends;
(3) subscriber station sends relative carrier resource applying message to the base station, and said relative carrier resource applying message is carried the relative carrier resource size of application; The base station connects in business on the basis of carrier resource of current use, is the professional carrier resource that distributes said relative carrier resource size that connects of said subscriber station again; Go to step (2);
(4) subscriber station sends absolute carrier resource applying request message to the base station, and said absolute carrier resource applying message is carried the absolute carrier resource size of application; The base station is the carrier resource that the business of subscriber station connects the absolute carrier resource size of distributing said application; Go to step (2).
Carrier resource applying of the present invention and distribution method, wherein,
In step (1) and step (4), said subscriber station sends absolute carrier resource applying messages step to the base station and comprises: subscriber station sends carrier resource applying message to the base station, and in said carrier resource applying message, the application category indicating bit is set; With said application category indicating bit is 1;
In step (3), said subscriber station sends relative carrier resource applying messages step to the base station and comprises: subscriber station sends carrier resource applying message to the base station, and in said carrier resource applying message, the application category indicating bit is set; With said application category indicating bit is 0.
Carrier resource applying of the present invention and distribution method, wherein, the described thresholding that is provided with in advance is default default settings or dynamically arranges and notify subscriber station by base station system.
Carrier resource applying of the present invention and distribution method, wherein, said absolute carrier resource size is a positive number.
Carrier resource applying of the present invention and distribution method, wherein, said relative carrier resource size is positive number or negative.
Adopt the method for the invention, in professional connection procedure,, confirm to send absolute still relative carrier resource applying message to the base station according to the quality of current communication link; Both reduce the carrier resource applying message size thereby reach, guarantee that again the base station can promptly and accurately connect the purpose of distributing carrier wave resource size for subscriber station.
Description of drawings
Fig. 1 is a kind of practical implementation flow chart of the method for the invention.
Embodiment
The present invention further sets forth a kind of carrier resource applying of the present invention and distribution method in order to solve the drawback that conventional solution exists through following examples, below embodiment is described in detail, but not as to qualification of the present invention.
The described method of the embodiment of the invention is selected to send relative carrier resource applying message or absolute carrier resource applying message is asked the base station assigns carrier resource to the base station according to communication link quality.
In the said method of the embodiment of the invention; Said relative carrier resource applying message is carried relative carrier resource size; Be after the base station receives relative resource bid message, for subscriber station connects the carrier resource that the carrier resource that distributes current required distributing carrier wave resource size adds relative carrier resource size; Said absolute carrier resource applying message is carried absolute carrier resource size, after promptly the base station receives absolute resource bid message, connects the carrier resource that distributes absolute carrier resource size for subscriber station.
A kind of practical implementation of the method for the invention may further comprise the steps:
Step 1, subscriber station comes to base station application distributing carrier wave resource through send carrier resource applying message to the base station; Through being set, the application category indicating bit identifies absolute carrier resource applying or relative carrier resource applying in carrier resource applying message;
Step 2, subscriber station be connected with business between the base station set up at the beginning of, subscriber station sends absolute carrier resource applying message to the base station; Said absolute carrier resource applying message is carried the absolute carrier resource size of application; The base station is the business connection distributing carrier wave resource of subscriber station based on the absolute carrier resource size of said application; Said absolute carrier resource size is a positive number;
Step 3, in professional connection procedure, subscriber station judges that the carrier resource of base station assigns can not satisfy the professional needs that connect, and based on the quality of current communication link, confirms to send absolute still relative carrier resource applying message to the base station;
With current detection to the signal to noise ratio of communication link compare with the thresholding that sets in advance; If current detection to the signal to noise ratio of communication link greater than the thresholding that sets in advance; Illustrate that current communication link quality is better; Subscriber station is by sending relative carrier resource applying message to the base station, said relative carrier resource applying message is carried the relative carrier resource size of application; After the relative carrier resource applying message of subscriber station was received in the base station, the base station connected in business on the basis of carrier resource of current use, was the professional carrier resource that distributes said relative carrier resource size that connects of said subscriber station again;
Said relative carrier resource size can be positive number, also can be negative, decides according to the relative value of the big or small and current carrier resource size of the carrier resource of current application;
If the signal to noise ratio of the communication link that current detection arrives is less than the thresholding that is provided with in advance; Explain that current communication link quality is relatively poor; Subscriber station sends the absolute carrier resource applying message request of the absolute carrier resource size of carrying application to the base station, and the distributing carrier wave resource is come according to the absolute carrier resource size of the application that said absolute carrier resource applying message is carried in the base station.
The described thresholding that is provided with in advance is default default settings or dynamically arranges and notify subscriber station by base station system.
As shown in Figure 1, be example with GSM based on OFDMA (OFDM access) standard, the another kind of practical implementation of the method for the invention may further comprise the steps:
Set up professional the connection between step 12, subscriber station and base station;
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art can make various corresponding changes and modification according to the present invention, but these corresponding changes and modification all should belong to the protection range of the appended claim of the present invention.
Claims (6)
1. carrier resource applying and distribution method; It is characterized in that; In business connected time-continuing process, subscriber station was selected to send relative carrier resource applying message or absolute carrier resource applying message is asked the base station assigns carrier resource to the base station according to communication link quality.
2. method according to claim 1 is characterized in that, may further comprise the steps:
(1) subscriber station is set up professional the connection with the base station, and subscriber station sends absolute carrier resource applying message to the base station, and said absolute carrier resource applying message is carried the absolute carrier resource size of application; The base station is the carrier resource that the business of subscriber station connects the absolute carrier resource size of distributing said application;
(2) connect in the time-continuing process in business; Subscriber station is judged when the carrier resource of base station assigns can not satisfy the needs of professional connection; The signal to noise ratio of the communication link of current detection and the thresholding that is provided with are in advance compared; When the signal to noise ratio of detected communication link during, go to step (3) greater than the thresholding that is provided with in advance; When the signal to noise ratio of detected communication link during, go to step (4) less than the thresholding that is provided with in advance; When business connects disconnection, process ends;
(3) subscriber station sends relative carrier resource applying message to the base station, and said relative carrier resource applying message is carried the relative carrier resource size of application; The base station connects in business on the basis of carrier resource of current use, is the professional carrier resource that distributes said relative carrier resource size that connects of said subscriber station again; Go to step (2);
(4) subscriber station sends absolute carrier resource applying message to the base station, and said absolute carrier resource applying message is carried the absolute carrier resource size of application; The base station is the carrier resource that the business of subscriber station connects the absolute carrier resource size of distributing said application; Go to step (2).
3. method as claimed in claim 2 is characterized in that,
In step (1) and step (4), said subscriber station sends absolute carrier resource applying messages step to the base station and comprises: subscriber station sends carrier resource applying message to the base station, and in said carrier resource applying message, the application category indicating bit is set; Said application category indicating bit is 1;
In step (3), said subscriber station sends relative carrier resource applying messages step to the base station and comprises: subscriber station sends carrier resource applying message to the base station, and in said carrier resource applying message, the application category indicating bit is set; Said application category indicating bit is 0.
4. method according to claim 2 is characterized in that, the described thresholding that is provided with in advance is default default settings or dynamically arranges and notify subscriber station by base station system.
5. method according to claim 2 is characterized in that, said absolute carrier resource size is a positive number.
6. method according to claim 2 is characterized in that, said relative carrier resource size is positive number or negative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101525558A CN101409926B (en) | 2007-10-11 | 2007-10-11 | Method for requesting and distributing carrier resource |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101525558A CN101409926B (en) | 2007-10-11 | 2007-10-11 | Method for requesting and distributing carrier resource |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101409926A CN101409926A (en) | 2009-04-15 |
| CN101409926B true CN101409926B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101525558A Expired - Fee Related CN101409926B (en) | 2007-10-11 | 2007-10-11 | Method for requesting and distributing carrier resource |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040213197A1 (en) * | 1999-05-21 | 2004-10-28 | Ofer Zimmerman | Method and apparatus for a self-correcting bandwidth request/grant protocol in a wireless communication system |
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- 2007-10-11 CN CN2007101525558A patent/CN101409926B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040213197A1 (en) * | 1999-05-21 | 2004-10-28 | Ofer Zimmerman | Method and apparatus for a self-correcting bandwidth request/grant protocol in a wireless communication system |
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| CN101409926A (en) | 2009-04-15 |
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