CN101610131B - Method for sending uplink extended control bits of half-rate TRAU frame - Google Patents

Method for sending uplink extended control bits of half-rate TRAU frame Download PDF

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CN101610131B
CN101610131B CN 200810100468 CN200810100468A CN101610131B CN 101610131 B CN101610131 B CN 101610131B CN 200810100468 CN200810100468 CN 200810100468 CN 200810100468 A CN200810100468 A CN 200810100468A CN 101610131 B CN101610131 B CN 101610131B
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frame
sid
trau
rate
extended control
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CN 200810100468
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CN101610131A (en
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董勇
马俊峰
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中兴通讯股份有限公司
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Abstract

The invention discloses a method for sending uplink extended control bits of a half-rate TRAU frame, which avoids the different understandings of a sender and a receiver to the uplink extended control bits. The method comprises the following steps: setting 3 bits of the uplink extended control bits XC1-XC5 of the TRAU frames of a half-rate code pattern conversion and rate adaptation unit as a UFI identification bit, a BFI identification bit and a TAF identification bit respectively, and setting the combination of the other 2 bits as an identification bit of SID and O&M frames; and setting the UFI identification bit, the BFI identification bit, the TAF identification bit and the identification bit of the SID and O&M frames according to the reliability and the serviceability of the decoded data, whether the decoded data is a new SID frame, and the type of the decoded data when a channel processor CHP of a channel encoding and decoding unit CCU performs uplink channel decoding on data received by an empty port, and sending out the set uplink extended control bits of the half-rate TRAU frame.

Description

A kind of sending method of uplink extended control bit of half-rate TRAU frame

Technical field

The present invention relates to wireless communication technology field, relate in particular to a kind of sending method of uplink extended control bit of half-rate TRAU frame.

Background technology

Current GSM (Global System for Mobile Communications, global system for mobile communications) in the system, as TRAU (Transcoder/Rate Adaptation Unit, code conversion and Rate Adapter Unit) unit is away from BTS (Base Transceiver Station, when base station transceiver) holding, the control information exchange of voice, data and TRAU unit between the CCU of BTS (Channel Coding Unit, Channel Codec Unit) and the TRAU unit is carried out in the trau frame mode.The transmission of trau frame both can also can be carried out in the transmission channel of 8kbit/s at 16kbit/s.Agreement 3GPP (3rd Generation Partnership Project, third generation partner program) TS 48.060 and 3GPP TS 48.061 have stipulated the concrete trau frame form of transfer of data in the band.Trau frame has the fixed frame length of 20ms:

160bit (20ms)----8kbit/s (half rate)

320bit (20ms)----16kbit/s (full rate)

What agreement 3GPP TS 48.061 described is the frame format definition of the half rate transmission channel (Traffic Channel-Half-rate is abbreviated as TCH/H) of the voice-and-data of CCU unit and TRAU unit.The frame structure definition of the trau frame of HR (Half Rate, half rate) voice is as shown in table 1, and in the table 1, XC1~XC6 is the uplink extended control bit.The implication of in the prior art uplink extended control bit being stipulated is the mapping relations (as shown in table 2) of an one-to-many, ambiguity will occur like this when the TRAU cell side is resolved.In the table 2, UFI is unreliable frame identification (Unreliable Frame Indication), BFI is bad frame indication (Bad Frame Indicator), TAF is time unifying sign (Time Alignment Flag), SID is silence descriptor (Silence Descriptor), and OP is parity check bit (Odd Parity of bits).The uplink extended control bit is filled by the CHP (ChannelProcessor, channel processor) of CCU unit.

The frame structure definition of table 1TRAU frame

The below has provided and has occurred a different example when TRAU cell side is resolved the uplink extended control bit.

Example 1: when uplink extended control bit XC1~XC5 was 01000 respectively, this can have three kinds of implications according to agreement:

(1)UFI=0,BFI=0,SID=1,TAF=0;

(2)UFI=0,BFI=1,SID=1,TAF=0;

(3)UFI=0,BFI=1,SID=2,TAF=0。

This needs the scheduler module oneself of TRAU unit force to determine a kind of implication, selects implication (3) such as the scheduler module of TRAU unit, and the decoding unit of then giving the TRAU unit UFI=0 of correspondence, BFI=1, SID=2 and TAF=0 is processed.This be just so that the real meaning of the uplink extended control bit representative of half-rate TRAU frame can't be determined in the TRAU unit, thereby causes TRAU unit and CCU unit can't be consistent to the understanding of half-rate TRAU frame.

The implication of table 2 uplink extended control bit

Summary of the invention

The technical problem to be solved in the present invention provides a kind of sending method of uplink extended control bit of half-rate TRAU frame, avoids transmit leg different to the understanding of uplink extended control bit from the recipient.

In order to address the above problem, the invention provides a kind of sending method of uplink extended control bit of half-rate TRAU frame, comprise the steps:

With the uplink extended control bit XC1-XC5 of half rate code conversion and Rate Adapter Unit trau frame wherein 3 be set to respectively unreliable frame identification UFI flag, bad frame indication BFI flag and time unifying sign TAF flag, other 2 combination is set to silence descriptor SID and Operation and Maintenance frame O﹠amp; M frame identification position;

The channel processor CHP of Channel Codec Unit CCU is carrying out up channel when decoding to the data of eating dishes without rice or wine to receive, respectively according to decoded the reliability of the data, availability, whether type arranges described UFI flag, BFI flag, TAF flag and SID and O﹠amp under new SID frame and the decoded data; M frame identification position, then the uplink extended control bit with the half-rate TRAU frame that sets sends.

Further, described reliability refers to that decoded data are reliable frame or unreliable frame, if reliable frame then the UFI flag be set to effectively, if unreliable frame then the UFI flag be set to invalid.

Further, described availability refers to that decoded data have been frame or bad frame, if good frame then the BFI flag be set to effectively, if bad frame then the BFI flag be set to invalid.

Further, if decoded data be new SID frame then the TAF flag be set to effectively, otherwise that the TAF flag is set to is invalid.

Further, type comprises good speech frame, acceptable SID frame, effective SID frame and O﹠amp under the described decoded data; M frame, CHP according to the particular type under the decoded data with SID and O﹠amp; The combination of M frame identification bit representation corresponding types is set to effectively.

Further, the method of reseptance of the uplink extended control bit of half-rate TRAU frame is as follows: when the TRAU unit receives half-rate TRAU frame, reading the value of XC1~XC5 in the uplink extended control bit resolves, if the UFI flag is effective, know that then described half-rate TRAU frame is reliable frame, otherwise be unreliable frame; If the BFI flag is effective, knows that then described half-rate TRAU frame has been frame, otherwise be bad frame; If the TAF flag is effective, knows that then described half-rate TRAU frame is new SID frame, otherwise be not new SID frame; SID and O﹠amp; The combination of M frame identification bit representation corresponding types is effective, knows that then described half-rate TRAU frame belongs to this corresponding types.

Further, the uplink extended control bit of half-rate TRAU frame is set as follows: the XC1 position is unreliable frame identification UFI flag: XC1=1 represents unreliable frame, and XC1=0 represents reliable frame; The XC2 position is bad frame indication BFI flag: XC2=1 represents bad frame, and XC2=0 has represented frame; The SID frame identification position whether the XC3 position is new for: XC3=1 represents new SID frame, and XC3=0 represents the SID frame that is not new; Two of XC4 and XC5 are SID and O﹠amp; M frame identification position, wherein: XC4, XC5 are 00 o'clock SID=0, the speech frame that expression is good, XC4, XC5 are 01 o'clock SID=1, represent acceptable SID frame, and XC4, XC5 are 10 o'clock SID=2, represent effective SID frame, and XC4, XC5 represented O﹠amp at 11 o'clock; The M frame.

Further, the sending method of the uplink extended control bit of half-rate TRAU frame comprises the steps: that the CHP of CCU unit carries out the up channel decoding to the data of eating dishes without rice or wine to receive; CHP judges whether unreliable frame of decoded data, if unreliable frame is 1 with the XC1 position in the half-rate TRAU frame then, otherwise is 0 with the XC1 position in the trau frame; CHP judges whether bad frame of decoded data, if bad frame, then the XC2 position with half-rate TRAU frame is 1, otherwise is 0 with the XC2 position of half-rate TRAU frame; CHP judges whether new SID frame of decoded data, is to be 1 with the XC3 position of half-rate TRAU frame then, otherwise is 0 with the XC3 position of half-rate TRAU frame; CHP judges the affiliated type of decoded data, if good speech frame is 00 with XC4, the XC5 position of half-rate TRAU frame then, if acceptable SID frame, be 01 with XC4, XC5 position then, if effectively the SID frame is 10 with XC4, XC5 position then, if O﹠amp; The M frame is set to 11 with XC4, XC5; The uplink extended control bit of the half-rate TRAU frame that sets is sent.

Further, when the method for reseptance of the uplink extended control bit of half-rate TRAU frame comprises the steps: that the TRAU unit receives half-rate TRAU frame, reading the value of XC1~XC5 in the uplink extended control bit resolves, the value of TRAU unit judges XC1, if the XC1 value is 1, then described half-rate TRAU frame is unreliable frame, if the XC1 value is 0, then is reliable frame; The value of TRAU unit judges XC2, if the XC2 value is 1, then described half-rate TRAU frame is bad frame, if the XC2 value is 0, then has been frame; The value of TRAU unit judges XC3, if the XC3 value is 1, then described half-rate TRAU frame is new SID frame, if the XC3 value is 0, then is not new SID frame; The value of TRAU unit judges XC4, XC5, if the value of XC4, XC5 is 00, then described half-rate TRAU frame is good speech frame, if the value of XC4, XC5 is 01, then be acceptable SID frame, if the value of XC4, XC5 is 10, then being effective SID frame, if the value of XC4, XC5 is 11, then is O﹠amp; The M frame is resolved and is finished.

Further, the implication of the uplink extended control bit of described half-rate TRAU frame and its representative has man-to-man mapping relations.

Therefore, the method of the invention can make the uplink extended control bit of half-rate TRAU frame have man-to-man mapping relations, eliminate the mapping of the uplink extended control bit one-to-many in the existing protocol to the uncertainty that the TRAU unit resolves causes, avoided owing to understanding differently between CCU unit and the TRAU unit causes the up decoding problem that causes.

Embodiment

Main design of the present invention is that the sending method of the uplink extended control bit of half-rate TRAU frame is as follows:

With the uplink extended control bit XC1-XC5 of half-rate TRAU frame wherein 3 be set to respectively UFI flag, BFI flag and TAF flag, other 2 combination is set to SID and O﹠amp; M frame (Operation and Maintenance frame) flag; The CHP of CCU unit is carrying out up channel when decoding to the data of eating dishes without rice or wine to receive, respectively according to decoded the reliability of the data, availability, whether type arranges described UFI flag, BFI flag, TAF flag and SID and O﹠amp under new SID frame and the decoded data; M frame identification position, then the uplink extended control bit with the half-rate TRAU frame that sets sends.After the configuration, the uplink extended control bit of half-rate TRAU frame and the implication of its representative have just had man-to-man mapping relations like this.

Described reliability refers to that decoded data are reliable frame or unreliable frame, if reliable frame then the UFI flag be set to effectively, if unreliable frame then the UFI flag be set to invalid.Described availability refers to that decoded data have been frame or bad frame, if good frame then the BFI flag be set to effectively, if bad frame then the BFI flag be set to invalid.If decoded data be new SID frame then the TAF flag be set to effectively, otherwise that the TAF flag is set to is invalid.Type comprises good speech frame (non-SID frame), acceptable SID frame, effective SID frame and O﹠amp under the decoded data; M frame, CHP according to the particular type under the decoded data with SID and O﹠amp; The combination of M frame identification bit representation corresponding types is set to effectively.

Accordingly, the method for reseptance of the uplink extended control bit of half-rate TRAU frame is as follows:

When the TRAU unit receives half-rate TRAU frame, read the value of XC1~XC5 in the uplink extended control bit and resolve, if the UFI flag is effective, knows that then described half-rate TRAU frame is reliable frame, otherwise be unreliable frame; If the BFI flag is effective, knows that then described half-rate TRAU frame has been frame, otherwise be bad frame; If the TAF flag is effective, knows that then described half-rate TRAU frame is new SID frame, otherwise be not new SID frame; SID and O﹠amp; The combination of M frame identification bit representation corresponding types is effective, knows that then described half-rate TRAU frame belongs to this corresponding types.

Need to prove that the XC6 of uplink extended control bit still is OP flag, i.e. parity check bit.Among the present invention, the implication of the uplink extended control bit of half-rate TRAU frame is as shown in table 3.

Table 3

Below in conjunction with embodiment method of the present invention is further described in detail.

In the present embodiment, to the work of the uplink extended control bit of half-rate TRAU frame following setting:

The XC1 position is that UFI flag: XC1=1 represents unreliable frame, and XC1=0 represents reliable frame;

The XC2 position is the BFI flag: XC2=1 represents bad frame, and XC2=0 has represented frame;

Whether new the XC3 position be SID frame identification position: the SID frame that the XC3=1 representative is new, and the XC3=0 representative is not new SID frame;

Two of XC4 and XC5 are SID and O﹠amp; The flag of M frame:

XC4, XC5 are 00 o'clock SID=0, the speech frame that representative is good,

XC4, XC5 are 01 o'clock SID=1, represent acceptable SID frame,

XC4, XC5 are 10 o'clock SID=2, represent effective SID frame,

XC4, XC5 are 11 interval scale O﹠amp; (cancelled in the prior art XC1-XC5 is 11111 expression O﹠amp to the M frame; The method of M frame),

XC6 still is parity check bit OP flag with stipulating in the existing protocol.

Therefore, the uplink extended control bit of rear half-rate TRAU frame and the implication of its representative are set have just had man-to-man mapping relations.

On the basis that arranges in the above, the sending method of the uplink extended control bit of half-rate TRAU frame comprises the steps: in the present embodiment

The first step, the CHP of CCU unit is carrying out up channel when decoding to the data of eating dishes without rice or wine to receive, judge whether unreliable frame of decoded data, if unreliable frame (being that UFI is 1), be 1 with the XC1 position in the half-rate TRAU frame then, otherwise be 0 with the XC1 position in the trau frame;

Second step, CHP are further judged whether bad frame of decoded data, if bad frame (being that BFI is 1), then the XC2 position with half-rate TRAU frame is 1, otherwise are 0 with the XC2 position of half-rate TRAU frame;

In the 3rd step, CHP further judges whether new SID frame of decoded data, is to be 1 with the XC3 position of half-rate TRAU frame then, otherwise is 0 with the XC3 position of half-rate TRAU frame;

In the 4th step, CHP further judges the affiliated type of decoded data, and type comprises good speech frame (non-SID frame), acceptable SID frame, effective SID frame and O﹠amp under the described decoded data; The M frame, if good speech frame is 00 with XC4, the XC5 position of half-rate TRAU frame then, if acceptable SID frame, then XC4, the XC5 position with half-rate TRAU frame is 01, if effectively the SID frame is 10 with XC4, the XC5 position of half-rate TRAU frame then, if O﹠amp; The M frame is set to 11 with XC4, the XC5 of half-rate TRAU frame, finishes.

Need to prove that each top step does not have sequencing, here we just for the convenience on narrating is described the method for the invention with step by step form, in other embodiments, each step can be carried out with other order.

Accordingly, in the present embodiment, the method for reseptance of the uplink extended control bit of half-rate TRAU frame comprises the steps:

The first step when TRAU unit receives half-rate TRAU frame, reads the value of XC1~XC5 in the uplink extended control bit and resolves, and judges the value of XC1, if the XC1 value is 1, then described half-rate TRAU frame is unreliable frame, if the XC1 value is 0, then is reliable frame;

Second step, the value of XC2 is further judged in the TRAU unit, if the XC2 value is 1, then described half-rate TRAU frame is bad frame, if the XC2 value is 0, then has been frame;

In the 3rd step, the value of XC3 is further judged in the TRAU unit, if the XC3 value is 1, then described half-rate TRAU frame is new SID frame, if the XC3 value is 0, then is not new SID frame;

The 4th step, the value of the further XC4 in TRAU unit, XC5, if the value of XC4, XC5 is 00, then described half-rate TRAU frame is good speech frame, if the value of XC4, XC5 is 01, then is acceptable SID frame, if the value of XC4, XC5 is 10, then being effective SID frame, if the value of XC4, XC5 is 11, then is O﹠amp; The M frame is resolved and is finished.

Below example 2 are situations for front example 1, again with the present invention to the uplink extended control bit arrange the transmitting half-rate trau frame, the uncertain problem of uplink extended control bit implication can not appear during the TRAU unit resolves.

Example 2: suppose that to the setting of uplink extended control bit, we just can parse unique implication according to the present invention when uplink extended control bit XC1~XC5 is 01000 respectively in the half-rate TRAU frame that up BTS sends up:

(1)UFI=0,BFI=1,TAF=0,SID=0。

As seen, the TRAU unit just can ambiguity not occur when resolving the implication of uplink extended control bit like this.

The present invention is on the basis that the uplink extended control bit is redefined, as long as the corresponding control bit filling in TRAU unit and CCU unit and resolution unit are done very little code revision, the uncertain problem of implication of uplink extended control bit before just can solving.

Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (10)

1. the sending method of the uplink extended control bit of a half-rate TRAU frame is characterized in that, comprises the steps:
With the uplink extended control bit XC1-XC5 of half rate code conversion and Rate Adapter Unit trau frame wherein 3 be set to respectively unreliable frame identification UFI flag, bad frame indication BFI flag and time unifying sign TAF flag, other 2 combination is set to silence descriptor SID and Operation and Maintenance frame O﹠amp; M frame identification position;
The channel processor CHP of Channel Codec Unit CCU is carrying out up channel when decoding to the data of eating dishes without rice or wine to receive, respectively according to decoded the reliability of the data, availability, whether type arranges described UFI flag, BFI flag, TAF flag and SID and O﹠amp under new SID frame and the decoded data; M frame identification position, then the uplink extended control bit with the half-rate TRAU frame that sets sends.
2. the method for claim 1 is characterized in that:
Described reliability refers to that decoded data are reliable frame or unreliable frame, if reliable frame then the UFI flag be set to effectively, if unreliable frame then the UFI flag be set to invalid.
3. the method for claim 1 is characterized in that:
Described availability refers to that decoded data have been frame or bad frame, if good frame then the BFI flag be set to effectively, if bad frame then the BFI flag be set to invalid.
4. the method for claim 1 is characterized in that:
If decoded data be new SID frame then the TAF flag be set to effectively, otherwise that the TAF flag is set to is invalid.
5. the method for claim 1 is characterized in that:
Type comprises good speech frame, acceptable SID frame, effective SID frame and O﹠amp under the described decoded data; M frame, CHP according to the particular type under the decoded data with SID and O﹠amp; The combination of M frame identification bit representation corresponding types is set to effectively.
6. such as the described method of the arbitrary claim of claim 1 to 5, it is characterized in that the method for reseptance of the uplink extended control bit of half-rate TRAU frame is as follows:
When the TRAU unit receives half-rate TRAU frame, read the value of XC1~XC5 in the uplink extended control bit and resolve, if the UFI flag is effective, knows that then described half-rate TRAU frame is reliable frame, otherwise be unreliable frame; If the BFI flag is effective, knows that then described half-rate TRAU frame has been frame, otherwise be bad frame; If the TAF flag is effective, knows that then described half-rate TRAU frame is new SID frame, otherwise be not new SID frame; SID and O﹠amp; The combination of M frame identification bit representation corresponding types is effective, knows that then described half-rate TRAU frame belongs to this corresponding types.
7. the method for claim 1 is characterized in that, the uplink extended control bit of half-rate TRAU frame is set as follows:
The XC1 position is unreliable frame identification UFI flag: XC1=1 represents unreliable frame, and XC1=0 represents reliable frame;
The XC2 position is bad frame indication BFI flag: XC2=1 represents bad frame, and XC2=0 has represented frame;
The SID frame identification position whether the XC3 position is new for: XC3=1 represents new SID frame, and XC3=0 represents the SID frame that is not new;
Two of XC4 and XC5 are SID and O﹠amp; M frame identification position, wherein:
XC4, XC5 are 00 o'clock SID=0, the speech frame that expression is good,
XC4, XC5 are 01 o'clock SID=1, represent acceptable SID frame,
XC4, XC5 are 10 o'clock SID=2, represent effective SID frame,
XC4, XC5 represented O﹠amp at 11 o'clock; The M frame.
8. method as claimed in claim 7 is characterized in that, the sending method of the uplink extended control bit of half-rate TRAU frame comprises the steps:
The CHP of CCU unit carries out the up channel decoding to the data of eating dishes without rice or wine to receive;
CHP judges whether unreliable frame of decoded data, if unreliable frame is 1 with the XC1 position in the half-rate TRAU frame then, otherwise is 0 with the XC1 position in the trau frame;
CHP judges whether bad frame of decoded data, if bad frame, then the XC2 position with half-rate TRAU frame is 1, otherwise is 0 with the XC2 position of half-rate TRAU frame;
CHP judges whether new SID frame of decoded data, is to be 1 with the XC3 position of half-rate TRAU frame then, otherwise is 0 with the XC3 position of half-rate TRAU frame;
CHP judges the affiliated type of decoded data, if good speech frame is 00 with XC4, the XC5 position of half-rate TRAU frame then, if acceptable SID frame, be 01 with XC4, XC5 position then, if effectively the SID frame is 10 with XC4, XC5 position then, if O﹠amp; The M frame is set to 11 with XC4, XC5;
The uplink extended control bit of the half-rate TRAU frame that sets is sent.
9. method as claimed in claim 8 is characterized in that, the method for reseptance of the uplink extended control bit of half-rate TRAU frame comprises the steps:
When the TRAU unit receives half-rate TRAU frame, read the value of XC1~XC5 in the uplink extended control bit and resolve,
The value of TRAU unit judges XC1, if the XC1 value is 1, then described half-rate TRAU frame is unreliable frame, if the XC1 value is 0, then is reliable frame;
The value of TRAU unit judges XC2, if the XC2 value is 1, then described half-rate TRAU frame is bad frame, if the XC2 value is 0, then has been frame;
The value of TRAU unit judges XC3, if the XC3 value is 1, then described half-rate TRAU frame is new SID frame, if the XC3 value is 0, then is not new SID frame;
The value of TRAU unit judges XC4, XC5, if the value of XC4, XC5 is 00, then described half-rate TRAU frame is good speech frame, if the value of XC4, XC5 is 01, then be acceptable SID frame, if the value of XC4, XC5 is 10, then being effective SID frame, if the value of XC4, XC5 is 11, then is O﹠amp; The M frame is resolved and is finished.
10. the method for claim 1 is characterized in that:
The uplink extended control bit of described half-rate TRAU frame and the implication of its representative have man-to-man mapping relations.
CN 200810100468 2008-06-16 2008-06-16 Method for sending uplink extended control bits of half-rate TRAU frame CN101610131B (en)

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