CN101453757A - Method and system for HSDPA flow control - Google Patents
Method and system for HSDPA flow control Download PDFInfo
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- CN101453757A CN101453757A CNA2007101790182A CN200710179018A CN101453757A CN 101453757 A CN101453757 A CN 101453757A CN A2007101790182 A CNA2007101790182 A CN A2007101790182A CN 200710179018 A CN200710179018 A CN 200710179018A CN 101453757 A CN101453757 A CN 101453757A
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Abstract
The invention provides an HSDPA flow control method, which comprises: a step 1 of expanding the length of a user cache size field in a high-speed downlink shared channel data frame or a high-speed downlink shared-channel capacity request frame to 4 bytes and filling the number of the bytes of a user cache in the user cache size field, or judging whether or not the number of the bytes of the user cache is larger than 65535, and filling 65535 in the user cache size field in the high-speed downlink shared-channel data frame or the high-speed downlink shared-channel capacity request frame to indicate that the number of the bytes of the user cache is larger than 65535 if the number of the bytes of the user cache is larger than 65535, or filling the actual number of the bytes of the user cache in the user cache size field; and a step 2 of transmitting the high-speed downlink shared-channel data frame or the high-speed downlink shared-channel capacity request frame to a base station for HSDPA flow control. Therefore, high-efficiency and accurate HSDPA flow control is realized.
Description
Technical field
The present invention relates to 3-G (Generation Three mobile communication system), relate in particular to the method and system of a kind of HSDPA (high speed downlink packet access) flow control.
Background technology
In 3GPP agreement TS25.435 and TS25.425, defined HS-DSCH (high speed descending sharing channel) data frame structure, and HS-DSCH capability requests frame structure, wherein defined User BufferSize (user cache size), its objective is the metadata cache situation of each user of informing base station in RNC (radio network controller) side, implement corresponding scheduling strategy thereby help the base station, such as distribution of interface-free resources or the like.At the base station buffer memory, the data volume that each user of RNC side can issue at most will be controlled according to resource allocation result in the base station, and feed back to RNC by the HS-DSCH capability distribution frame, thereby reach the purpose of Flow Control for fear of too much data stacking.
The unit of field User Buffer Size is a byte, and length of field is 16 bits, and promptly the maximum of field UserBuffer Size is 65535.Yet, under the situation of signal quality variation of eating dishes without rice or wine, may cause user data at RNC side bulk deposition, promptly the user cache data volume may surpass 65535 bytes.Such as, equal 656 bits with RLC (Radio Link control) PDU (protocol Data Unit) size and calculate, if the RLC PDU of RNC buffer memory outnumbers 800, then the data volume of user cache can surpass 65535 bytes.Particularly along with the introducing of HSPA+ (high-speed packet inserts and strengthens) technology, the ability of eating dishes without rice or wine strengthens greatly, and professional peak rate also can improve a lot, and the data volume of RNC side user cache will correspondingly increase, and is easy to surpass 65535 bytes.The real cache that at this time can't correctly reflect the user by 16 field User Buffer Size.
Summary of the invention
For addressing the above problem the method and system that the invention provides a kind of HSDPA flow control, its purpose is to make field User Buffer Size as far as possible correctly to reflect each user's of RNC side real cache, thereby helps improving the effect of HSDPA flow control.
The invention discloses a kind of method of high speed downlink packet access flow control, comprise the steps:
Step 1, the length of user cache size field is 4 bytes in expansion high speed descending sharing channel Frame or the high speed descending sharing channel capability requests frame, and the byte number of user cache is filled up to described user cache size field,
Perhaps, whether the byte number of judging user cache is greater than 65535, if the byte number of described user cache is greater than 65535, then user cache size field in high speed descending sharing channel Frame or the high speed descending sharing channel capability requests frame is extended this as 65535 with the expression user cache byte number greater than 65535, otherwise, the user cache byte number of reality is filled up to described user cache size field;
Step 2 sends to the base station to carry out the control of high speed downlink packet access flow with described high speed descending sharing channel Frame or high speed descending sharing channel capability requests frame.
When using described high speed descending sharing channel Frame and carrying out flow control, also comprise before the described step 1:
Step 21 according to high-level signaling, is set up corresponding each protocol entity of subscriber equipment, comprises PDCP entity, radio link control entity and medium access control entity;
Step 22, after the packet data protocol activation success, radio network controller receives data from the Iu interface, puts into the metadata cache of described PDCP entity;
Step 23, described PDCP entity is put into the buffer memory to be sent of described radio link control entity with data, and the data that fail to lay down still are stored in the buffer memory of described PDCP entity;
Step 24, described radio link control entity is put into the logic channel buffer memory with data to be sent, and the data that fail to lay down still are stored in the buffer memory to be sent of described radio link control entity;
Step 25, the medium access control entity takes out data from logic channel.
The byte number of described user cache is that the PDCP entity is not put into radio link control entity data in buffer amount size, radio link control entity data volume size and logic channel data volume size to be sent sum to be sent.
The invention also discloses a kind of system of high speed downlink packet access flow control, comprise base station and radio network controller, described radio network controller comprises the medium access control entity, and described medium access control entity comprises:
Operational module, the length that is used for expanding high speed descending sharing channel Frame or high speed descending sharing channel capability requests frame user cache size field is 4 bytes, and the byte number of user cache is filled up to described user cache size field,
Perhaps, whether the byte number of judging user cache is greater than 65535, if the byte number of user cache is greater than 65535, with user cache size field in high speed descending sharing channel Frame or the high speed descending sharing channel capability requests frame extend this as 65535 with the expression user cache byte number greater than 65535, otherwise, the user cache byte number of reality is filled up to described user cache size field;
Sending module is used for described high speed descending sharing channel Frame or high speed descending sharing channel capability requests frame are sent to the base station to carry out the control of high speed downlink packet access flow.
When using described high speed descending sharing channel Frame and carrying out flow control, described radio network controller also is used for according to high-level signaling, set up corresponding each protocol entity of subscriber equipment, comprise PDCP entity, radio link control entity and described medium access control entity, and after the packet data protocol activation success, receive data from the Iu interface, put into the metadata cache of described PDCP entity;
Described PDCP entity is used for data are put into the buffer memory to be sent of described radio link control entity, and the data that fail to lay down still are stored in the buffer memory of described PDCP entity;
Described radio link control entity is used for data to be sent are put into the logic channel buffer memory, and the data that fail to lay down still are stored in the buffer memory to be sent of described radio link control entity;
Described medium access control entity also is used for taking out data from logic channel.
The byte number of described user cache is that the PDCP entity is not put into radio link control entity data in buffer amount size, radio link control entity data volume size and logic channel data volume size to be sent sum to be sent.
Beneficial effect of the present invention is to make application field User Buffer Size as far as possible correctly to reflect each user's of RNC side real cache, thus the resource allocation of accurate instruction base station as far as possible, to improve HSDPA flow control effect.
Embodiment
A kind of system of high speed downlink packet access flow control comprises base station and radio network controller.
Described radio network controller comprises the medium access control entity, and the medium access control entity comprises:
Operational module, length in order to User BufferSize field in expansion HS-DSCH Frame or the HS-DSCH capability requests frame is 4 bytes, the byte number of user cache is filled up to User Buffer Size field, perhaps, whether the byte number of judging user cache is greater than 65535, if the byte number of user cache is greater than 65535, with User Buffer Size field extend this as 65535 with the expression user cache byte number greater than 65535, otherwise, the user cache byte number of reality is filled up to User Buffer Size field;
Sending module is used for described HS-DSCH Frame or HS-DSCH capability requests frame are sent to the base station to carry out the control of high speed downlink packet access flow.
A kind of method of high speed downlink packet access flow control comprises:
Step 1, the length of User Buffer Size field is 4 bytes in expansion HS-DSCH Frame or the HS-DSCH capability requests frame, the byte number of user cache is filled up to User Buffer Size field, perhaps, whether the byte number of judging user cache is greater than 65535, if the byte number of described user cache is greater than 65535, then User Buffer Size field in HS-DSCH Frame or the HS-DSCH capability requests frame is extended this as 65535 with the expression user cache byte number greater than 65535, otherwise, the user cache byte number of reality is filled up to User Buffer Size field;
Step 2 sends to the base station to carry out the control of high speed downlink packet access flow with HS-DSCH Frame or HS-DSCH capability requests frame.
With the example that extends this as of field User Buffer Size in the HS-DSCH Frame, provide specific embodiment respectively below.
Specific embodiment one
According to high-level signaling, set up corresponding each protocol entity of UE (subscriber equipment), comprise PDCP (PDCP) entity, RLC entity and MAC (medium access control) entity etc.Wherein the PDCP buffer memory is relevant with professional signatory speed; The RLC buffer memory is relevant with the send window of high-rise configuration, but comprising sending does not also obtain the metadata cache confirmed the opposite end and metadata cache two parts to be sent.
After PDP (packet data protocol) activated successfully, RNC received data from the Iu interface, puts into the PDCP metadata cache.
The PDCP entity is put into RLC buffer memory to be sent with data, and the data that fail to lay down still are stored in the PDCP buffer memory.
The RLC entity is put into the logic channel buffer memory with data to be sent, and the data that fail to lay down still are stored in RLC buffer memory to be sent.
The MAC entity takes out data from logic channel, encapsulates according to improving later HS-DSCH data frame structure.Wherein field User Buffer Size accounts for 4 bytes, and its value equals PDCP and do not put into RLC data in buffer amount size, RLC data volume size and logic channel data volume size sum to be sent to be sent.
Specific embodiment two
According to high-level signaling, set up corresponding each protocol entity of UE, comprise PDCP entity, RLC entity and MAC entity, wherein the PDCP buffer memory is relevant with professional signatory speed, the RLC buffer memory is relevant with the send window of high-rise configuration, but comprises and send not the metadata cache confirmed by the opposite end and metadata cache two parts to be sent.
After PDP activated successfully, RNC received data from the IU mouth, puts into the PDCP metadata cache.
The PDCP entity is put into RLC buffer memory to be sent with data, and the data that fail to lay down still are stored in the PDCP buffer memory.
The RLC entity is put into the logic channel buffer memory with data to be sent, and the data that fail to lay down still are stored in RLC buffer memory to be sent.
The MAC entity takes out data from logic channel, and the HS-DSCH data frame structure encapsulates.Judge user cache, its value is not put into RLC data in buffer amount size, RLC data volume size and logic channel data volume size to be sent sum to be sent for PDCP, whether greater than 65535 bytes, if, then field User Buffer Size fills in 65535, otherwise field User Buffer Size fills in actual user cache byte number.
Claims (6)
1. the method for a high speed downlink packet access flow control is characterized in that, comprises the steps:
Step 1, the length of user cache size field is 4 bytes in expansion high speed descending sharing channel Frame or the high speed descending sharing channel capability requests frame, and the byte number of user cache is filled up to described user cache size field,
Perhaps, whether the byte number of judging user cache is greater than 65535, if the byte number of described user cache is greater than 65535, then user cache size field in high speed descending sharing channel Frame or the high speed descending sharing channel capability requests frame is extended this as 65535 with the expression user cache byte number greater than 65535, otherwise, the user cache byte number of reality is filled up to described user cache size field;
Step 2 sends to the base station to carry out the control of high speed downlink packet access flow with described high speed descending sharing channel Frame or high speed descending sharing channel capability requests frame.
2. the method for high speed downlink packet access flow as claimed in claim 1 control is characterized in that, when using described high speed descending sharing channel Frame and carrying out flow control, also comprises before the described step 1:
Step 21 according to high-level signaling, is set up corresponding each protocol entity of subscriber equipment, comprises PDCP entity, radio link control entity and medium access control entity;
Step 22, after the packet data protocol activation success, radio network controller receives data from the Iu interface, puts into the metadata cache of described PDCP entity;
Step 23, described PDCP entity is put into the buffer memory to be sent of described radio link control entity with data, and the data that fail to lay down still are stored in the buffer memory of described PDCP entity;
Step 24, described radio link control entity is put into the logic channel buffer memory with data to be sent, and the data that fail to lay down still are stored in the buffer memory to be sent of described radio link control entity;
Step 25, the medium access control entity takes out data from logic channel.
3. the method for high speed downlink packet access flow control as claimed in claim 2, it is characterized in that the byte number of described user cache is that the PDCP entity is not put into radio link control entity data in buffer amount size, radio link control entity data volume size and logic channel data volume size to be sent sum to be sent.
4. the system of a high speed downlink packet access flow control comprises base station and radio network controller, and described radio network controller comprises the medium access control entity, it is characterized in that, described medium access control entity comprises:
Operational module, the length that is used for expanding high speed descending sharing channel Frame or high speed descending sharing channel capability requests frame user cache size field is 4 bytes, and the byte number of user cache is filled up to described user cache size field,
Perhaps, whether the byte number of judging user cache is greater than 65535, if the byte number of user cache is greater than 65535, with user cache size field in high speed descending sharing channel Frame or the high speed descending sharing channel capability requests frame extend this as 65535 with the expression user cache byte number greater than 65535, otherwise, the user cache byte number of reality is filled up to described user cache size field;
Sending module is used for described high speed descending sharing channel Frame or high speed descending sharing channel capability requests frame are sent to the base station to carry out the control of high speed downlink packet access flow.
5. the system of high speed downlink packet access flow control as claimed in claim 4, it is characterized in that, when using described high speed descending sharing channel Frame and carrying out flow control, described radio network controller also is used for according to high-level signaling, set up corresponding each protocol entity of subscriber equipment, comprise PDCP entity, radio link control entity and described medium access control entity, and after the packet data protocol activation success, receive data from the Iu interface, put into the metadata cache of described PDCP entity;
Described PDCP entity is used for data are put into the buffer memory to be sent of described radio link control entity, and the data that fail to lay down still are stored in the buffer memory of described PDCP entity;
Described radio link control entity is used for data to be sent are put into the logic channel buffer memory, and the data that fail to lay down still are stored in the buffer memory to be sent of described radio link control entity;
Described medium access control entity also is used for taking out data from logic channel.
6. the system of high speed downlink packet access flow control as claimed in claim 4, it is characterized in that the byte number of described user cache is that the PDCP entity is not put into radio link control entity data in buffer amount size, radio link control entity data volume size and logic channel data volume size to be sent sum to be sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101790182A CN101453757B (en) | 2007-12-07 | 2007-12-07 | Method and system for HSDPA flow control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101790182A CN101453757B (en) | 2007-12-07 | 2007-12-07 | Method and system for HSDPA flow control |
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| CN101453757B CN101453757B (en) | 2011-03-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959245A (en) * | 2009-07-13 | 2011-01-26 | 中兴通讯股份有限公司 | Method, device and system for controlling flow in WiMAX (Worldwide Interoperability for Microwave Access) system |
| CN103281227A (en) * | 2011-11-04 | 2013-09-04 | 罗伯特·博世有限公司 | Method of driving bus arrangement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100512289C (en) * | 2005-07-18 | 2009-07-08 | 华为技术有限公司 | Processing method for communication system transmitting and receiving data using general frame forming rule |
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2007
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959245A (en) * | 2009-07-13 | 2011-01-26 | 中兴通讯股份有限公司 | Method, device and system for controlling flow in WiMAX (Worldwide Interoperability for Microwave Access) system |
| CN101959245B (en) * | 2009-07-13 | 2013-06-05 | 中兴通讯股份有限公司 | Method, device and system for controlling flow in WiMAX (Worldwide Interoperability for Microwave Access) system |
| CN103281227A (en) * | 2011-11-04 | 2013-09-04 | 罗伯特·博世有限公司 | Method of driving bus arrangement |
| CN103281227B (en) * | 2011-11-04 | 2018-11-09 | 罗伯特·博世有限公司 | Method for running bus unit |
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| CN101453757B (en) | 2011-03-16 |
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