CN101242346B - Method for mapping logic channel data to high-speed physical downlink share channel and transmitting it - Google Patents
Method for mapping logic channel data to high-speed physical downlink share channel and transmitting it Download PDFInfo
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- CN101242346B CN101242346B CN2007100075614A CN200710007561A CN101242346B CN 101242346 B CN101242346 B CN 101242346B CN 2007100075614 A CN2007100075614 A CN 2007100075614A CN 200710007561 A CN200710007561 A CN 200710007561A CN 101242346 B CN101242346 B CN 101242346B
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Abstract
The invention provides a transmitting method for mapping logical channel to a high speed physical down share channel, wherein (1) a high speed down share channel media access controlling entity seals a control head comprising n high speed down share channel media access control sub heads of a dedicated control logical channel or a dedicated service logical channel and n high speed down share channel media access control operation data units corresponding to n control sub heads to a media access control protocol data unit, wherein n is a natural number, and the control sub heads are put at front of the corresponding media access control operation data units, comprising: a logical channel identification number for identifying the logical channel sent to here; a data unit length representing the size of wireless chain circuit control heads and effective loads; a sectional identification for identifying a sectional number of upper layer data; and a district wireless network temporary identification number for identifying the user equipment; and (2) the sealed media access control protocol data unit is transmitted in a high speed down share channel.
Description
Technical field
The present invention relates to a kind of method that logical channel data is mapped to the high-speed physical downlink shared channel (HS-PDSCH) transmission.
Background technology
In order to improve the throughput of high data traffic of user and system, the R5 standard agreement of 3GPP has been introduced a kind of high-speed packet and has been shared transmission channel (High Speed Downlink Shared Channel: high speed shared channels), the physical channel that this channel shone upon adopts time-division and sign indicating number branch mode, and this channel has adopted and has mixed (HARQ) and Adaptive Modulation and Coding (AMC) technology of retransmitting automatically, makes peak rate can reach 10.8Mbps～30Mbps.Its final purpose is by providing the access to high speed packet service to increase the capacity of system and reduce transmission delay, thereby, improve the requirement of user to service quality (Qos).
The 3GPP consensus standard to Radio Resource control (RRC) connection mode down front access state (CELL_FACH) and (or) paging state (CELL_PCH/URA_PCH) controlled under (RRC) connection mode of Radio Resource strengthens, promptly CELL_FACH and (or) CELL_PCH/URA_PCH also can use high speed downlink packet to insert (HSDPA) technology (at this, will be in CELL-FACH and (or) CELL_PCH/URA_PCH state use and to share grouping at a high speed and insert (HSDPA) technology, abbreviate as and strengthen the connection mode common condition).When subscriber equipment was in reinforcement connection mode common condition, the data of public control logic channel (CCCH), special-purpose control logic channel (DCCH), dedicated service logic channel (DTCH), multimedia control logic channel (MCCH) and multimedia service logic channel logic channels such as (MTCH) all can be mapped on the high-speed physical downlink shared channel (HS-PDSCH) and send.
In the prior art, the CCCH logic channel is not mapped to the application on the HS-DSCH.Therefore, need packaged media access control protocol data cell again, make it can be mapped to the enterprising line data of high-speed physical downlink shared channel (HS-PDSCH) and send.
Summary of the invention
The technical problem to be solved in the present invention provides and a kind of logical channel data is mapped to the method that high speed descending sharing channel sends, and CCCH can be mapped on the high speed descending sharing channel media access control protocol entity.
In order to address the above problem, the present invention proposes and a kind of logical channel data is mapped to the method that high speed descending sharing channel sends, may further comprise the steps:
(1) medium access control entity of high speed descending sharing channel is encapsulated in the media access control protocol data unit with the control head that comprises n high speed descending sharing channel medium access control head of public control logic channel with a n control n corresponding respectively high speed descending sharing channel medium access control Service Data Unit, described n is a natural number, described control head is placed on before the respective media access control Service Data Unit, at least comprise: Logic Channel Identifier number, being used to identify is the data that send over from which public control logic channel; Data unit length is represented the size of Radio Link control head and payload; Divide segment identification, be used to indicate the fragment number of the medium access control entity of high speed descending sharing channel the last layer data;
(2) packaged media access control protocol data unit is sent on high speed descending sharing channel.
Further, said method also can have following characteristics: in the step (1), described control head also comprises version sign, and described version sign is encapsulated in before first control head.
Further, said method also can have following characteristics: during step (1) encapsulation, when medium access control head added n group media access control Service Data Unit sum less than the total length of media access control protocol data unit, then in the end the afterbody of a medium access control Service Data Unit used filler to fill.
Further, said method also can have following characteristics: in the step (1), described control head and medium access control Service Data Unit are staggered and control son head and the corresponding adjacent setting of medium access control Service Data Unit, also comprise the data indication in each control head, be used to indicate follow-up whether also have control head and corresponding medium access control Service Data Unit; Perhaps control head is placed on the front entirely, after described control head,, comprise also in each control head that being used to indicate follow-up is the medium access control head or the sign of medium access control Service Data Unit by arranging the corresponding service data cell with the same sequence of control head.
Further, said method also can have following characteristics: in the step (2), described medium access control head and high speed descending sharing channel medium access control Service Data Unit all are variable-lengths.
Further, said method also can have following characteristics: in the step (1), when radio bearer identification number 1, it is the data map to high speed descending sharing channel media access control protocol entity the time that RB1 is mapped to public control logic channel, described control head also comprises radio network temporary identifier, is used for identifying user equipment.
Compared with prior art, the present invention proposes and a kind of logical channel data is mapped to the method that high-speed physical downlink shared channel (HS-PDSCH) sends, the CCCH logic channel is mapped on the high speed descending sharing channel media access control protocol entity.
Description of drawings
Fig. 1 is the structure chart of the media access control protocol data unit in first example.
Fig. 2 is the structure chart of the media access control protocol data unit in second example.
Fig. 3 is the structure chart of the media access control protocol data unit in the 3rd example.
Fig. 4 is the structure chart of the media access control protocol data unit in the 4th example.
Embodiment
The invention provides and a kind of logical channel data is mapped to the method that high-speed physical downlink shared channel (HS-PDSCH) sends, the data map that radio bearer identification number 0 (RB0) and radio bearer identification number 1 (RB1) are mapped on the public control logic channel CCCH arrives high speed descending sharing channel media access control protocol entity.
The present invention is described in further detail below in conjunction with drawings and Examples.
A kind of logical channel data is mapped to the method that high-speed physical downlink shared channel (HS-PDSCH) sends, may further comprise the steps:
Step 110, medium access control entity (MAC-hs) by high speed descending sharing channel is encapsulated in the media access control protocol data unit with the control head that comprises n high speed descending sharing channel medium access control head of public control logic channel with a n control n corresponding respectively high speed descending sharing channel medium access control Service Data Unit, described control head is placed on before the respective media access control Service Data Unit, described control head comprises Logic Channel Identifier number (logicalchannel id) at least, data unit length (length) divides segment identification (SC);
Wherein, Logic Channel Identifier number is 4 bits, and being used to identify is the data that send over from which logic channel, and its span is 0～15; Data unit length is 11 bits, represents the size of Radio Link control (RLC) head and payload, is the length of each control head medium access control Service Data Unit corresponding with it, and its span is 0～2047; Segmentation is designated 2 bits, the segmentation identification number that is used to indicate the medium access control entity of high speed descending sharing channel that the last layer data are carried out segmentation, UE according to this minute segment identification receive merging.
Described control head can also comprise version sign (VF), is 1 bit, the effective mac-hs pdu of 0 representative, and 1 representative keeps; When comprising version sign, this version sign is encapsulated in before first control head.
First example
CCCH need distinguish radio bearer identification number 0 (RB0) and radio bearer identification number 1 (RB1), the data map that is mapped to the CCCH logic channel as RB0 is to high speed descending sharing channel media access control protocol entity, the high speed descending sharing channel media access control protocol data unit, as shown in Figure 1.Described control head and medium access control Service Data Unit are staggered and control son head and the corresponding adjacent setting of medium access control Service Data Unit, also comprise the data indication in each control head, be used to indicate follow-up whether also have control head and corresponding medium access control Service Data Unit.
Second example
CCCH need distinguish radio bearer identification number 0 (RB0) and radio bearer identification number 1 (RB1), the data map that is mapped to the CCCH logic channel as RB0 is to high speed descending sharing channel media access control protocol entity, the high speed descending sharing channel media access control protocol data unit, as shown in Figure 2.Described control head is arranged in the front entirely, after described control head, arrange the corresponding service data cell, comprise also in each control head that being used to indicate follow-up is the medium access control head or the sign of medium access control data cell by the same sequence of control head.
The 3rd example
Radio bearer identification number 1 (RB1) is mapped to the data map of CCCH logic channel to high speed descending sharing channel media access control protocol entity, the high speed descending sharing channel media access control protocol data unit, on the basis of first example, described control head also comprises UTRAN radio network temporary identifier (U-RNTI), as shown in Figure 3, described U-RNTI is 32 bits, is used for identifying user equipment.
The 4th example
Radio bearer identification number 1 (RB1) is mapped to the data map of CCCH logic channel to high speed descending sharing channel media access control protocol entity, the high speed descending sharing channel media access control protocol data unit, on the basis of second example, described control head also comprises UTRAN radio network temporary identifier (U-RNTI), as shown in Figure 4, described U-RNTI is 32 bits, is used for identifying user equipment.
Step 120, when medium access control head adds n group media access control Service Data Unit sum less than the total length of media access control protocol data unit, then in the end the afterbody of a medium access control Service Data Unit uses Padding (filler) to fill, and described n is a natural number.
Described n control son head is corresponding n medium access control Service Data Unit, described medium access control head and high speed descending sharing channel medium access control Service Data Unit all are variable-lengths, and in a protocol Data Unit, each control head or Service Data Unit can be unequal.
The total length of media access control protocol data unit is that predefined is good in the agreement, can be with reference to this consensus standard, add under the situation of n group media access control Service Data Unit sum smaller or equal to the total length of media access control protocol data unit at the medium access control head that guarantees encapsulation, the length value of as far as possible selecting the total length with media access control protocol data unit to be close compares, and adds filler.
Step 130 sends packaged media access control protocol data unit on high speed descending sharing channel.
Should be understood that above-mentioned description at specific embodiment of the present invention is comparatively concrete, should not be defined in embodiment described in the invention.Those skilled in the art are when making corresponding distortion according to the present invention, and scope of patent protection of the present invention should be as the criterion with claims.
Claims (6)
1. one kind is mapped to the method that high speed descending sharing channel sends with logical channel data, may further comprise the steps:
(1) medium access control entity of high speed descending sharing channel is encapsulated in the media access control protocol data unit with the control head that comprises n high speed descending sharing channel medium access control head of public control logic channel with a n control n corresponding respectively high speed descending sharing channel medium access control Service Data Unit, described n is a natural number, described control head is placed on before the respective media access control Service Data Unit, at least comprise: Logic Channel Identifier number, being used to identify is the data that send over from which public control logic channel; Data unit length is represented the size of Radio Link control head and payload; Divide segment identification, be used to indicate the fragment number of the medium access control entity of high speed descending sharing channel the last layer data;
(2) packaged media access control protocol data unit is sent on high speed descending sharing channel.
2. method according to claim 1 is characterized in that:
In the step (1), described control head also comprises version sign, and described version sign is encapsulated in before first control head.
3. method according to claim 1 is characterized in that:
During step (1) encapsulation, when medium access control head added n group media access control Service Data Unit sum less than the total length of media access control protocol data unit, then in the end the afterbody of a medium access control Service Data Unit used filler to fill.
4. method according to claim 1 is characterized in that:
In the step (1), described control head and medium access control Service Data Unit are staggered and control son head and the corresponding adjacent setting of medium access control Service Data Unit, also comprise the data indication in each control head, be used to indicate follow-up whether also have control head and corresponding medium access control Service Data Unit;
Perhaps control head is placed on the front entirely, after described control head,, comprise also in each control head that being used to indicate follow-up is the medium access control head or the sign of medium access control Service Data Unit by arranging the corresponding service data cell with the same sequence of control head.
5. as method as described in the claim 3, it is characterized in that:
In the step (2), described medium access control head and high speed descending sharing channel medium access control Service Data Unit all are variable-lengths.
6. method according to claim 1 is characterized in that:
In the step (1), when radio bearer identification number 1, be the data map to high speed descending sharing channel media access control protocol entity the time that RB1 is mapped to public control logic channel, described control head also comprises radio network temporary identifier, is used for identifying user equipment.
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| CN101867871B (en) * | 2009-04-17 | 2013-02-13 | 电信科学技术研究院 | Method, system and equipment for selecting logical channels to perform data processing |
| CN102196361A (en) * | 2010-03-05 | 2011-09-21 | 中兴通讯股份有限公司 | Sending and receiving methods, devices and systems of MBS (Multicasting Broadcasting Service) protocol data unit |
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| CN1859077A (en) * | 2005-04-30 | 2006-11-08 | 华为技术有限公司 | Time division multiplex data transmitting method based on packet exchanging |
| CN1878129A (en) * | 2005-06-08 | 2006-12-13 | 中兴通讯股份有限公司 | Isolation method for two-layer service between websites in RPR |
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| CN1859077A (en) * | 2005-04-30 | 2006-11-08 | 华为技术有限公司 | Time division multiplex data transmitting method based on packet exchanging |
| CN1878129A (en) * | 2005-06-08 | 2006-12-13 | 中兴通讯股份有限公司 | Isolation method for two-layer service between websites in RPR |
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