WO2010069224A1

WO2010069224A1 - Method, device and terminal for differentiating modulation coding schemes corresponding to radio blocks

Info

Publication number: WO2010069224A1
Application number: PCT/CN2009/075263
Authority: WO
Inventors: 王之曦
Original assignee: 华为技术有限公司
Priority date: 2008-12-19
Filing date: 2009-12-02
Publication date: 2010-06-24
Also published as: CN101753257B; CN101753257A

Abstract

A method for differentiating modulation coding schemes corresponding to radio blocks, includes that: a stealing bit sequence in a RTTI Block is obtained; the stealing bit sequence is compared respectively with all stealing bit sequences which may be carried by the RTTI Block, the closest stealing bit sequence to the stealing bit sequence is found from all the stealing bit sequences which may be carried; and a modulation coding scheme corresponding to the RTTI Block is determined according to the closest stealing bit sequence to the stealing bit sequence. A device and terminal for differentiating the modulation coding schemes corresponding to the radio blocks are also provided in the present invention. In the embodiments of the present invention, the modulation coding scheme corresponding to the obtained RTTI Block is accordingly determined by comparing the obtained stealing bit sequence with all stealing bit sequences which may be carried by the RTTI Block.

Description

Method, device and terminal for distinguishing modulation coding scheme corresponding to radio block

This application claims priority to Chinese Patent Application No. 200810207529.5, entitled "Method, Apparatus and Terminal for Distinguishing Modulation and Coding Scheme Corresponding to Radio Blocks", filed on December 19, 2008, the entire contents of which are hereby incorporated by reference. This is incorporated herein by reference. TECHNICAL FIELD The present invention relates to wireless communication technologies, and more particularly to techniques for distinguishing a modulation coding scheme used by a radio block. Background technique

In Global Mobile for Mobile Communications (GSM), General Packet Radio Service (GPRS), and Enhanced GPRS (EPPS) networks, Temporary Block Flow (TBF) is a mobile station. Temporary connection between (MS, Mobile Station) and the network side, only exists during data forwarding. A TBF can use radio resources on one or more Packet Data Channels (PDCHs). The smallest scheduling unit for data transmission at the physical layer is a radio block. Each radio block consists of 4 time slots (TS, Timeslot) (burst Burst) and is located in 4 consecutive Time Division Multiple Access (TDMA) frames. A TDMA frame consists of 8 time slots, generally 5 ms. Therefore, the transmission timing interval (TTI, Transmission Timing Interval) of each radio block is 20 ms. Such a radio block can also be called a basic transmission time interval (BTTI, Basic TTI) Block.

One of the goals of GPRS and EGPRS evolution is to reduce the delay of the transmission time interval. In order to reduce the delay of the transmission time interval of the radio block, those skilled in the art propose a technique of reducing the transmission time interval (RTTI, Reduced TTI). In the RTTI technology, the size of each radio block is kept unchanged. By increasing the multi-slot bandwidth in the time domain, the TTI is reduced to 10 ms by using multiple slots. BTTI Block is shown in Figure 1B1; RTTI Block is shown as B2 in Figure 1. As shown, the radio block using the RTTI technique consists of 4 slots distributed in two consecutive TDMA frames. As can be seen from Figure 1, the RTTI technique does reduce the TTI to 10ms. After the introduction of RTTI technology, a radio block is transmitted either on one PDCH (in BTTI configuration) or on one PDCH pair (RTTI configuration), that is, one radio block is in one time slot (BTI configuration) The uplink transmission is either transmitted on a time slot pair (RTTI configuration). The network side uses the control information for the PDCH (or PDCH pair) used by the MS. When the TBF is a TBTI configured TBF (hereinafter referred to as BTTI TBF), the radio block transmitted on the channel is a BTTI Block; when the TBF is an RTTI configured TBF (hereinafter referred to as RTTI TBF), the radio block transmitted on the channel is an RTTI Block. In addition, the RTTI TBF has two Uplink State Flag (USF) modes: BTTI USF mode and RTTI USF mode. After the introduction of the RTTI technology, for the Gaussian Filtered Minimum Shift Keying (GMSK) modulation, the modulation coding scheme corresponding to the RTTI block used for signaling transmission is the Modulation and Coding Scheme (MCS). 0 or coding scheme (CS, Coding Scheme)-1, the modulation coding scheme corresponding to the RTTI block used for data transmission is MCS-1, MCS-2, MCS-3 or MCS-4 (hereinafter referred to as MCS-1~4) ). It should be noted that when the network side (generally refers to the base station) sends information to the MS, it needs to use the RLC/MAC of the Radio Link Control (RLC)/Media Access Control (MAC) layer. The block modulation is coded as a radio block of the physical layer. When modulation coding is used, a modulation coding scheme is needed. Thus, the radio block obtained after modulation and coding corresponds to a modulation coding scheme. In the uplink assignment process (when the MS sends information to the base station), the MS can determine whether the USF mode is the RTTI USF mode or the BTTI USF mode. In the BTTI USF mode, the RTTI Block used for signaling transmission always corresponds to the MCS-0; In RTTI USF mode, the RTTI block used for signaling transmission corresponds to CS-1 or MCS-0. The MS can distinguish the letter by checking the RTTI Block's Stealing Flags/Stealing Bits. Let the transmitted RTTI block correspond to CS-1 or MCS-0 o. During the downlink assignment process (when the base station sends information to the MS), although the MS can determine that the network side has assigned the RTTI TBF, the MS cannot determine the RTTI Block corresponding. Which modulation coding scheme is used, MS cannot determine whether the Stealing Bits in the RTTI Block are in the 20ms format (if the RTTI TBF is BTTI USF mode) or the 10ms format (if the RTTI TBF is the RTTI USF mode). In short, when the MS receives the RTTI Block sent by the network side, it cannot determine which modulation and coding scheme corresponds to the RTTI Block. Summary of the invention

Embodiments of the present invention provide a method, apparatus, and terminal for distinguishing a modulation and coding scheme corresponding to a radio block, to determine a modulation and coding scheme corresponding to the radio block. An aspect of the present invention provides a method for distinguishing a modulation and coding scheme corresponding to a radio block, including: obtaining a frame stealing bit sequence in an RTTI block; and respectively, the stealing frame bit sequence and all stealing frame bit sequences that may be carried by the RTTI block Performing an alignment, finding a frame stealing bit sequence closest to the frame stealing bit sequence from all the stolen frame bit sequences that may be carried; determining the according to the stealing frame bit sequence closest to the stealing frame bit sequence The modulation coding scheme corresponding to the RTTI Block. Another aspect of the present invention provides an apparatus for distinguishing a modulation and coding scheme corresponding to a radio block, including: an obtaining unit, configured to obtain a frame stealing bit sequence in an RTTI Block; and a matching unit, configured to obtain the obtained unit The frame stealing bit sequence is compared with all the stealing frame bit sequences that the RTTI block may carry, and the stealing frame bit sequence closest to the stealing frame bit sequence is found from all the stolen frame bit sequences that may be carried; a determining unit, configured to determine, according to the stealing frame bit sequence that is found by the comparing unit and closest to the stealing frame bit sequence, a modulation and coding scheme corresponding to the RTTI block. Still another aspect of the present invention provides a terminal comprising the above-described apparatus for distinguishing a modulation coding scheme corresponding to a radio block. In the embodiment of the present invention, the obtained punctured frame bit sequence is compared with all the sneak frame bit sequences that the RTTI block may carry, thereby determining the modulation coding scheme corresponding to the obtained RTTI block. . BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a schematic diagram of a prior art BTTI Block; FIG. 2A is a schematic diagram of a format of Stealing Bits in a BTTI Block corresponding to MCS-1~4; 2B is a schematic diagram of a format of Stealing Bits in a BTTI Block corresponding to CS-1; FIG. 3 is a schematic diagram of a format of Stealing Bits corresponding to an RTTI Block of MCS-0~4 in a BTTI USF mode;

4A is a schematic diagram of a format of Stealing Bits corresponding to the RT-1 block of the CS-1 in the RTTI USF mode;

4B is a schematic diagram showing the format of Stealing Bits corresponding to the RTS Block of the MCS-0~4 in the RTTI USF mode;

FIG. 5 is a flowchart of a method for distinguishing a modulation and coding scheme corresponding to a radio block according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of an apparatus for distinguishing a modulation and coding scheme corresponding to a radio block according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

In order to facilitate a clear understanding of the embodiments of the present invention by those skilled in the art, some technical points involved in the following embodiments are first described herein. The modulation coding scheme corresponding to the BTTI Block used for signaling transmission is CS-1, and the modulation coding scheme corresponding to the BTTI Block for data transmission is MCS-1~4. The MS can use the Stealing Bits in the BTTI Block to distinguish between CS-1 and MCS-1~4. The format of Stealing Bits using BTTI Block of MCS-1~4 is shown as 8 bits in Figure 2A, ie 00010110; the format of Stealing Bits using BTTI Block of CS-1 is as shown in the 8 bits of Figure 2B, ie 11111111. In addition, TB represents a tail bit, TS represents a training sequence, and B0, Bl, B2, and B3 represent a 0th Burst, a 1st Burst, a 2nd Burst, and a 3rd Burst, respectively.

When the RTTI TBF uses the BTTI USF mode, the modulation coding scheme corresponding to the RTTI block used for signaling transmission is MCS-0, and the modulation coding scheme corresponding to the RTTI Block for data transmission is MCS-1~4. The MS may use the coded puncturing scheme indication in the RLC/MAC header of the RLC/MAC block (CPS, Coding and Puncturing Scheme) to distinguish between MCS-0 and MCS-1~4. At this point, MS cannot use Stealing Bits to distinguish between MCS-0 and MCS-1 to 4 because they correspond to the same Stealing Bits. As shown in Figure 3, the format of the Stealing Bits in the RTTI Block corresponding to the first 10 milliseconds (ms) of MCS-1~4 or MCS-0 is as shown by the 8 bits in the dotted line box, ie 00000101; corresponding to MCS The format of Stealing Bits in the RTTI Block of -1-4 or MCS-0 is as follows: 8 bits in the dotted line box, that is, 01011010; where, the first 10ms and the last 10ms refer to the same 20ms period. The first 10 ms and the last 10 ms, the 20 ms period starts from the base station to start transmitting information to the MS.

When the RTTI TBF uses the RTTI USF mode, the modulation coding scheme corresponding to the RTTI block used for signaling transmission is CS-1 or MCS-0, and the modulation coding scheme corresponding to the RTTI block used for data transmission is MCS-1~4. If the MS finds that the Stealing Bits in the RTTI Block correspond to CS-1, the MS can distinguish the RTTI Block corresponding to CS-1 from the RTTI Block corresponding to MCS-l~4/MCS-0; if the MS finds RTTI The Stealing Bits in the Block correspond to MCS-1~4/MCS-0, then the MS can check the CPS in the RLC/MAC block header, so that the RTTI Block corresponding to MCS-0 and the RTTI Block corresponding to MCS1-4 can be obtained. differentiate. The format of the Stealing Bits in the RTTI Block corresponding to the first 10 ms and the last 10 ms of MCS-1~4 or MCS-0 is as shown in the 8 bits of FIG. 4A, that is, 00010110; corresponding to the first 10 ms and the last 10 ms RTTI of CS-1 The format of the Stealing Bits in the Block is shown in the 8 bits of Figure 4B, which is 11111111.

Since the format of the Stealing Bits (which may also be referred to as a Stealing Bits sequence;) is referred to below, in order to facilitate the reference to the format of the Stealing Bits, the embodiment of the present invention uses the form of Table 1 to describe the format of the Stealing Bits.

The definition of Stealing Bits is 20ms. The last 10ms of the 20ms block period is 10ms. The first 10ms corresponds to MCS-1~4. ©ο,ο,ο,ο,ο,ι,ο,ι 4 0,1,0,1, 1, 0,1,0

RTTI Block at BTTI USF

In mode, it corresponds to 0,0,0,0,0,1,0,1 0,1,0,1,1,0,1,0 of MCS-0.

RTTI Block at BTTI USF

Mode Corresponding to MCS-1~4 ©ο,ο,ο,ι,ο,ι,ι,ο 0,0,0,1,0,1,1,0

RTTI Block at RTTI USF

Mode

0,0,0,1,0,1,1,0 0,0,0,1,0,1,1,0 corresponding to MCS-0

RTTI Block at RTTI USF

Mode

Corresponding to CS-1 RTTI ® 1,1,1,1,1,1,1,1 1,1,1,1,1,1,1,1

Block in RTTI USF mode

Time

A method for distinguishing a modulation and coding scheme corresponding to a radio block according to an embodiment of the present invention is described below. As shown in Figure 5, it includes:

S501: Obtain a frame stealing bit sequence in the RTTI Block. In practical applications, when the base station sends information to the MS, it first needs to use a modulation and coding scheme to modulate the RLC/MAC block into a radio block, and then send the radio block to the MS, where the radio block carries the Stealing Bits sequence. After the MS obtains the TTI Block, the Stealing Bits sequence can be completely obtained.

In addition, according to the existing protocol, the base station transmits one RTC block every 20 ms from the time when the base station starts transmitting information to the MS (ie, the BTTI Block period), and every 20 ms period, the base station sends two RTTI blocks to the MS, and each The RTTI Blocks correspond to a 10ms (ie, RTTI Block period), and the modulation coding schemes corresponding to the two RTTI Blocks are the same. Therefore, the obtained RTTI Block can also be said to be the first 10ms RTTI Block of a 20ms period or the last 10ms RTTI Blocko of a 20ms period.

S502: Compare the frame stealing bit sequence with all stealing frame bit sequences that may be carried by the RTTI block, and find a frame stealing frame closest to the stealing frame bit sequence from all the stolen frame bit sequences that may be carried. Bit sequence.

If the obtained RTTI Block is the first 10 ms RTTI Block in the 20 ms period, then All Stealing Bits sequences that may be carried by the RTTI Block are the three Stealing Bits sequences that may be carried by the first 10 ms RTTI Block shown in Table 1 (123 in Table 1); if the obtained RTTI Block is after the 20 ms period For a 10 ms RTTI block, all Stealing Bits sequences that the obtained RTTI Block may carry are the three Stealing Bits sequences that may be carried by the RTIO Block of the last 10 ms shown in Table 1 (124 in Table 1). In practical applications, information transmitted through the wireless channel may be interfered, which may cause the received bit sequence not to be completely consistent with the originally transmitted bit sequence. In this regard, the receiver may determine the possible value closest to the received value as Originally sent value. Therefore, in the embodiment of the present invention, after obtaining the Stealing Bits sequence, the Stealing Bits sequence can be compared with all Stealing Bits sequences that the RTTI Block may carry. For example, if the obtained RTTI block is a first 10 ms RTTI block of a 20 ms period, the obtained Stealing Bits sequence is respectively compared with the three Stealing Bits sequences that may be carried by the first 10 ms RTTI Block shown in Table 1; If the obtained RTTI Block is an RTTI Block of the last 10 ms of the 20 ms period, the Stealing Bits sequence obtained is compared with the three Stealing Bits sequences that may be carried by the RTIO Block of the last 10 ms shown in Table 1. After the alignment, the Stealing Bits sequence closest to the obtained Stealing Bits sequence was found from all Stealing Bits sequences that the RTTI Block may carry. The proximity between the obtained Stealing Bits sequence and all Stealing Bits sequences that the RTTI Block may carry can be measured using the Hamming distance. Thus, the Stealing Bits sequence closest to the Stealing Bits sequence obtained from all the Stealing Bits sequences that the RTTI Block may carry is essentially the Stealing Bits sequence found between the Stealing Bits sequence that may be carried by the RTTI Block. The Steinging Bits sequence with the smallest distance. The following describes the Hamming distance.

In a code group set, the number of bits whose values on the corresponding bits between any two code words are different is defined as the Hamming distance between the two code words. That is, d(x, y) = ∑ x [i] y [i] , where i = 0, l, .. n - l, x, y are all n-bit codes, indicating exclusive OR. For example, the distance between 00 and 01 is 1, and the distance between 110 and 101 is 2.

In a set of code groups, the minimum Hamming distance between any two codes is called the minimum Hamming distance of this code group. In short, in the embodiment of the present invention, the Hamming distance is a number of corresponding bit values between two bit sequences, for example, the bit sequence "1, 1, 1, 1, 1, 1, 1, The Hamming distance between 1 " and 0,0,0,1,0,1,1,0" is 5, "0,0,0,1,0,1,1,0" and "0,0, The Hamming distance of 0,0,0,1,0,1 " is 3. The larger the Hamming distance between two bit sequences, the easier it is to distinguish. A Hamming distance between two bit sequences is zero, indicating that the two bit sequences are identical. The smaller the Hamming distance between two bit sequences, the closer the two bit sequences are.

S503: Determine a modulation and coding scheme corresponding to the RTTI block according to the stealing frame bit sequence closest to the stealing frame bit sequence. Specifically, if the found Stealing Bits sequence closest to the obtained Stealing Bits sequence only corresponds to one modulation coding scheme, it may be determined that the modulation and coding scheme is a modulation coding scheme corresponding to the obtained RTTI Block. For example, the RTTI block obtained by the device is a first 10 ms RTTI block in a 20 ms period, and the Stealing Bits sequence in the obtained RTTI block and the three Stealings that may be carried in the first 10 ms RTTI block shown in Table 1 respectively. After the alignment of the Bits sequence, if the Stealing Bits sequence in the obtained RTTI Block is closest to the sequence 1, since the sequence 1 only corresponds to CS-1, it can be directly determined that the obtained RTTI Block corresponds to CS-1.

If the found Stealing Bits sequence closest to the obtained Stealing Bits sequence corresponds to a plurality of modulation coding schemes, the obtained RTTI Block correspondence is obtained according to the CPS in the block header of the RLC/MAC block of the obtained RTTI Block obtained by the modulation coding. Modulation coding scheme. For example, if the obtained RTTI block is a RTTI block of the last 10 ms in a 20 ms period, the Stealing Bits sequence in the obtained RTTI Block and the three Stealing Bits sequences that may be carried in the last 10 ms RTTI Block shown in Table 1 respectively. After the comparison, if the Stealing Bits sequence in the obtained RTTI Block is closest to the sequence 2, since the sequence 2 corresponds to the five modulation coding schemes of MCS-0 or MCS-1~4, it is necessary to use the RLC. The CPS in the block header of the /MAC block distinguishes which modulation coding scheme corresponds to the obtained RTTI Block.

If the Stealing Bits sequence found closest to the obtained Stealing Bits sequence is a plurality of Stealing Bits sequences, the obtained Stealing Bits sequence of the 10 ms RTTI Block in the same 20 ms period may be obtained with the additional The modulation coding scheme corresponding to the closest Stealing Bits sequence among the three Stealing Bits sequences that may be carried by the 10 ms RTTI Block is used as the modulation coding scheme corresponding to the obtained RTTI Block. As mentioned above, two wireless in the same 20ms period The modulation coding scheme of the block is the same, so that the modulation coding scheme corresponding to the RTTI block cannot be unambiguously determined by the Stealing Bits sequence in an RTTI block obtained, and then the other RTTI block of the same 20 ms period can be obtained. The Stealing Bits sequence determines which modulation coding scheme the RTTI Block corresponds to. The specific logical relationship is that the sequence corresponding to 10ms before and after CS-1 is 1; the sequence corresponding to 10ms before and after the RTTI USF mode of MCS-0 or MCS1-4 is 2; ΒΤΉ USF mode of MCS-0 or MCS1-4 The sequence corresponding to the first 10ms is 3, and the sequence corresponding to the last 10ms is 4.

For example, suppose that the Stealing Bits sequence in the first 10 ms RTTI Block obtained is the same as Sequence 1 and Sequence 2 shown in Table 1. At this time, the Stealing Bits sequence in the RTTI Block obtained in the last 10 ms is shown in Table 1. The three Stealing Bits sequences that the last 10 ms RTTI Block may carry are compared. If the Stealing Bits sequence in the RTTI Block of the last 10 ms is closest to the sequence 1, it can be determined that the obtained RTTI Block corresponds to CS-1. . Similarly, if the Stealing Bits sequence in the RTTI Block of the last 10 ms is closest to the sequence 2, it can be preliminarily determined that the Stealing Bits sequence in the obtained first 10 ms RTTI Block is closest to the sequence 2, and then the RLC/MAC is used. The CPS in the block header of the block distinguishes the modulation coding scheme corresponding to the obtained RTTI Block. Of course, the Stealing Bits sequence in the first 10ms RTTI Block may be closest to Sequence 3. In this case, the corresponding method can be adopted according to the actual situation. For example, if the Stealing Bits sequence in the RTTI Block of the last 10 ms is closer to the sequence 4 than the Stealing Bits sequence in the RTTI Block of the last 10 ms is close to the sequence 1 or the sequence 2, the obtained first 10 ms RTTI can be initially determined. The Stealing Bits sequence in the Block is closest to Sequence 3, and then the modulation coding scheme corresponding to the obtained RTTI Block is distinguished according to the CPS in the block header of the RLC/MAC block. For another example, if the Stealing Bits sequence in the first 10 ms RTTI Block is close to the sequence 3, the Stealing Bits sequence in the RTTI Block of the first 10 ms is close to the sequence 1 or the sequence 2, and after 10 ms, 10 ms later. The closeness of the Stealing Bits sequence in the TTI Block to the sequence 4 is equal to the proximity of the Stealing Bits sequence in the RTTI Block of the last 10 ms to the sequence 1 or the sequence 2, indicating that the bit error rate is likely to be large. The three choose one or use blind detection to determine the modulation coding scheme corresponding to the obtained RTTI block. Of course, if the obtained Stealing Bits sequence in the first 10 ms RTTI Block is the closest to Sequence 1 and Sequence 2 shown in Table 1, and the 10 ms after the combination, the Stealing Bits sequence and Sequence 1 in the RTM Block after 10 ms. The proximity is equal to the proximity of sequence 2, then you can choose either directly or use blind detection. A method is to determine a modulation coding scheme corresponding to the obtained RTTI block. For a description of the blind test, please refer to the following, and I will not repeat them here. In practical applications, those skilled in the art can also use other methods to solve the problem of determining the modulation coding scheme when the obtained Stealing Bits sequence is the same as the multiple sequences, and no longer, more embodiments are listed. It should be noted that the execution body of steps S501, S502, and S503 may be a terminal, such as an MS. The method shown in FIG. 5 can be implemented by multiple forms of devices. One device for distinguishing the modulation and coding scheme corresponding to the radio block is as shown in FIG. 6, and includes: an obtaining unit 601 for obtaining the steal in the RTTI Block. a frame bit sequence; the comparing unit 602, configured to compare the frame stealing bit sequence obtained by the obtaining unit 601 with all the stealing frame bit sequences that may be carried by the RTTI block, from all the stolen frames that may be carried A sequence of stealing frame bits closest to the sequence of the stolen frame bits is found in the bit sequence; determining unit 603 is configured to use at least the frame stealing bit sequence found by the comparing unit 602 and the stolen frame bit sequence as at least Based on a determination, a modulation coding scheme corresponding to the RTTI Block is determined. In practical applications, when the base station sends information to the MS, it first needs to use a modulation and coding scheme to modulate the RLC/MAC block into a radio block, and then send the radio block to the MS, where the radio block carries the Stealing Bits sequence. In this embodiment, the RTTI Block is obtained by the obtaining unit 601, and after the obtaining unit 601 obtains the RTTI Block, the Stealing Bits sequence therein can be completely obtained. If the RTTI block obtained by the obtaining unit 601 is the first 10 ms RTTI block in the 20 ms period, all the Stealing Bits sequences that the RTTI Block obtained by the obtaining unit 601 may carry are the possible TTI blocks of the first 10 ms shown in Table 1. Three Stealing Bits sequences (in Table 1)

123); if the RTTI block obtained by the obtaining unit 601 is the RTTI block of the last 10 ms in the 20 ms period, all the Stealing Bits sequences that the RTTI Block obtained by the obtaining unit 601 may carry are the last 10 ms TTI Block shown in Table 1. Three Stealing Bits sequences that may be carried (in Table 1)

124). In practical applications, information transmitted through the wireless channel may be interfered, which may cause the received bit sequence not to be completely consistent with the originally transmitted bit sequence. In this regard, the receiver may determine the possible value closest to the received value as Originally sent value. Therefore, in the embodiment of the present invention, after the obtaining unit 601 obtains the Stealing Bits sequence, the comparison list Element 602 can compare the Stealing Bits sequence to all Stealing Bits sequences that the RTTI Block may carry. For example, if the RTTI block obtained by the obtaining unit 601 is an RTTI block of the first 10 ms of a 20 ms period, the Stealing Bits sequence that the matching unit 602 will obtain is respectively three types that may be carried by the first 10 ms RTTI Block shown in Table 1. The Stealing Bits sequence is compared; if the RTTI Block obtained by the 杲 obtaining unit 601 is an RTTI Block of the last 10 ms of the 20 ms period, the Stealing Bits sequence obtained by the matching unit 602 and the RTTI of the last 10 ms shown in Table 1 respectively. The three Stealing Bits sequences that the Block may carry are compared. After comparison by the matching unit 602, the Stealing Bits sequence closest to the obtained Stealing Bits sequence is found from all Stealing Bits sequences that the RTTI Block may carry. The proximity between the Stealing Bits sequence obtained by the acquisition unit 601 and all Stealing Bits sequences that the RTTI Block may carry can be measured using the Hamming distance. Thus, the matching unit 602 finds that the Stealing Bits sequence closest to the obtained Stealing Bits sequence from all Stealing Bits sequences that the RTTI Block may carry is substantially obtained from the Stealing Bits sequence that may be carried by the RTTI Block and obtained by the obtaining unit 601. The Stealing Bits sequence with the smallest Hamming distance between the Stealing Bits sequences. The determining unit 603 may include a distinguishing module, if the Stealing Bits sequence closest to the Stealing Bits sequence found by the comparing unit 602 corresponds to only one modulation and coding scheme, the distinguishing module may directly determine the modulation and coding scheme. That is, the modulation coding scheme corresponding to the RTTI block. For example, assuming that the RTTI block obtained by the obtaining unit 601 is an RTTI block of the first 10 ms in a 20 ms period, the comparison unit 602 obtains the Stealing Bits sequence in the RTTI Block obtained by the unit 601 and the first 10 ms shown in Table 1, respectively. After the three Stealing Bits sequences that the RTTI Block may carry are compared, if the Stealing Bits sequence in the RTTI Block obtained by the obtaining unit 601 is closest to the sequence 1, then since the sequence 1 only corresponds to CS-1, the distinguishing module can directly determine The obtained RTTI Block corresponds to CS-1. If the Stealing Bits sequence closest to the Stealing Bits sequence found by the comparing unit 602 corresponds to multiple modulation and coding schemes, the distinguishing module may encode the CPS in the block header of the RLC/MAC block of the RTTI Block according to the modulation. To distinguish the modulation coding scheme corresponding to the RTTI Block. For example, assuming that the RTTI Block obtained by the obtaining unit 601 is an RTTI Block of the last 10 ms in a 20 ms period, the matching unit 602 will obtain the Stealing Bits in the RTTI Block obtained by the unit 601. After the sequence is compared with the three Stealing Bits sequences that may be carried by the RTIO block of the last 10 ms shown in Table 1, if the Stealing Bits sequence in the RTTI Block obtained by the obtaining unit 601 is closest to the sequence 2, then the sequence 2 corresponds to The five modulation coding schemes are MCS-0 or MCS-1~4, so the distinguishing module also needs to use the CPS in the block header of the RLC/MAC block to distinguish which modulation coding scheme corresponds to the obtained RTTI Block.

The determining unit 603 may also include a distinguishing module, if the Stealing Bits sequence that is closest to the Stealing Bits sequence obtained by the obtaining unit 601 by the comparing unit 602 is a plurality of Stealing Bits sequences, the distinguishing module may obtain the same The modulation coding scheme corresponding to the Stealing Bits sequence of the other 10 ms RTTI Block in a 20 ms period and the closest Stealing Bits sequence among the three Stealing Bits sequences that the other 10 ms RTTI Block may carry as the modulation corresponding to the obtained RTTI Block Coding scheme. As mentioned above, the modulation coding schemes of the two radio blocks in the same 20 ms period are the same, so that if the distinguishing module passes the Stealing Bits sequence in an RTTI block obtained by the obtaining unit 601, the modulation corresponding to the RTTI block cannot be unambiguously determined. For the coding scheme, the distinguishing module can determine which modulation coding scheme corresponds to the RTTI Block by obtaining the Stealing Bits sequence in another RTTI block of the same 20 ms period obtained by the unit 601. For example, it is assumed that the Stealing Bits sequence in the first 10 ms RTTI Block obtained by the obtaining unit 601 is the same as the sequence 1 and the sequence 2 shown in Table 1, and the matching unit 602 will again obtain the last 10 ms RTTI Block. The Stealing Bits sequence is compared with the three Stealing Bits sequences that may be carried by the last 10 ms RTTI Block shown in Table 1. If the Stealing Bits sequence in the RTTI Block of the last 10 ms is closest to Sequence 1, the distinguishing module can determine the obtained The RTTI Block corresponds to CS-1. Similarly, if the Stealing Bits sequence in the RTTS block of the last 10 ms is closest to the sequence 2, the distinguishing module can initially determine that the Stealing Bits sequence in the obtained first 10 ms RTTI Block is closest to the sequence 2, and then according to the RLC/MAC. The CPS in the block header of the block distinguishes the modulation coding scheme corresponding to the obtained RTTI Block. Of course, the Stealing Bits sequence in the first 10ms RTTI Block may be closest to the sequence 3. In this case, the distinguishing module can take corresponding measures according to the actual situation. For example, if the Stealing Bits sequence in the RTTI Block of the last 10 ms is closer to the sequence 4 than the Stealing Bits sequence in the RTTI Block of the last 10 ms is close to the sequence 1 or the sequence 2, the distinguishing module can initially determine the first 10 ms obtained. The Stealing Bits sequence in the RTTI Block is closest to Sequence 3, and then the modulation coding scheme corresponding to the obtained RTTI Block is distinguished according to the CPS in the block header of the RLC/MAC block. For another example, if in the first 10ms of the RTTI Block The closeness of the Stealing Bits sequence to Sequence 3 is equal to the proximity of the Stealing Bits sequence in the RTTI Block of the first 10 ms to Sequence 1 or Sequence 2, and the 10 ms after the combination, the Stealing Bits sequence and the Sequence 4 in the RTT Block after 10 ms. The proximity is equal to the proximity of the Stealing Bits sequence in the RTTI Block to the sequence 1 or sequence 2 in the last 10 ms, indicating that the bit error rate is likely to be large. In this case, the distinguishing module can directly select one or use the blind check. The way to determine the modulation coding scheme corresponding to the obtained RTTI Block. Of course, if the obtained Stealing Bits sequence in the first 10 ms RTTI Block is the same as Sequence 1 and Sequence 2 shown in Table 1, and the 10 ms after the combination, the Stealing Bits sequence and Sequence 1 in the RTIO Block after 10 ms. The proximity is equal to the proximity of the sequence 2, and the distinguishing module can directly determine the modulation coding scheme corresponding to the obtained RTTI block by using the blind detection method. In practical applications, the distinguishing module may also use other methods to solve the problem of determining the modulation coding scheme when the obtained Stealing Bits sequence is the closest to the multiple sequences, and no longer, more embodiments are listed.

It should be noted that each unit in the apparatus shown in FIG. 6 may be disposed in a terminal (for example, an MS), and the units work in the terminal in the same manner as in the apparatus shown in FIG. Narration. The embodiments of the present invention will be described in detail below in conjunction with the processing techniques of Hamming distance.

Assume that the Stealing Bits sequence in the RTTI Block received by the MS is A, and the Hamming distance between A and the sequence 1 "1,1,1,1,1,1,1,1" shown in Table 1 is dl, A. The Hamming distance from the sequence 2 "0,0,0,1,0,1,1,0" is denoted as d2, A and the sequence 3 "0,0,0,0,0,1,0,1" The Hamming distance is recorded as d3, and the Hamming distance between A and the sequence 4 "0,1,0,1,1,0,1,0" is recorded as d4, and the minimum value in dl, d2, d3, d4 can indicate A. Which sequence is closest to it.

For the first 10ms RTTI Block, it is judged which of the sequences 1, 2, and 3 is closest to A, that is, which of dl, d2, and d3 is the smallest. Similarly, for the last 10ms RTTI Block, it is judged which sequence of A, 1, 2, and 4 is closest to A, that is, which of dl, d2, and d4 is the smallest. Meanwhile, regardless of the USF mode, the MS uses the CPS in the block header of the RLC/MAC block to distinguish the RTTI block for signaling transmission corresponding to the MCS-0 and the RTTI for data transmission corresponding to the MCS-1~4. Block.

One way to judge the Hamming distance is as follows: For the first 10ms RTTI Block:

If dl<=2, then dl<d2,d3 , indicating that A is closest to sequence 1.

Else if 2<dl=d3 , and dl<d2, indicating that A is closest to sequence 1 or 3. In this case, it is preferable that A is sequence 3 or A is sequence 1;

5136 should be the sequence corresponding to 11101 ((11, d2, d3).

For the last 10ms RTTI Block:

If dl=l , then dl<d2,d4, indicating that A is closest to sequence 1.

Else if Kdl =d4<d2, indicating that A is closest to sequence 1 or 4;

Else A should be the sequence corresponding to min(dl, d2, d4).

The above judgment method can also be compressed into the following form:

For the first 10ms RTTI Block:

IF 2 < dl = d3 < d2, which means that A should be 1 or 3, and it can be taken that A is 3 or A is 1;

Else A should be the sequence corresponding to min(dl, d2, d3).

For the last 10ms RTTI Block:

IF Kdl=d4<d2, indicating that A should be 1 or 4;

Else A should be the sequence corresponding to min(dl, d2, d4).

More simply, the above determination method can be further compressed into the following form:

For the first 10ms RTTI Block:

IF dl=d3<d2, indicating that A should be 1 or 3, but A is 3 or A is 1;

Else A should be the sequence corresponding to min(dl, d2, d3).

For the last 10ms RTTI Block:

IF dl=d4<d2, indicating that A should be 1 or 4; Else A should be the sequence corresponding to min(dl, d2, d4).

It should be noted that the Stealing Bits obtained in the first 10 ms and the last 10 ms may be different, but their corresponding modulation and coding schemes must be the same. If the Stealing Bits obtained in the first 10ms are sequence 1, then according to Table 1, the Stealing Bits obtained in the last 10ms are also listed as 1. In the same way, if the Stealing Bits obtained in the first 10ms are the sequence 3, then the Stealing obtained in the last 10ms Bits is sequence 4. Similarly, if the Stealing Bits obtained in the first 10ms are sequence 2, the Stealing Bits obtained in the last 10ms are also sequence 2. It should also be noted that if it is determined that A is sequence 1, then the corresponding modulation and coding scheme is CS-1, and the corresponding radio block is the CSTI coded RTTI block of the RTTI USF mode for signaling transmission; A is sequence 2, and the corresponding modulation and coding scheme is MCS-0 or MCS-1 4. The corresponding radio block is the MCTI-0 coded RTTI block of the RTTI USF mode for signaling transmission or the MCTI of the RTTI USF mode. -1~4 encoded RTTI block for data transmission; if it is judged that A is sequence 3, the corresponding modulation and coding scheme is MCS-0 or MCS-1~4, and the corresponding radio block is MCS-0 of BTTI USF mode. The encoded RTTI Block for signaling transmission is the RTTI Block for data transmission encoded by MCS-1~4 of BTTI USF mode; if it is determined that A is sequence 4, the corresponding modulation and coding scheme is MCS-0 or MCS-1~4, the corresponding radio block is an RTTI block for signaling transmission of MCS-0 code of BTTI USF mode or an RTTI block for data transmission of MCS-1-4 code of BTTI USF mode; The first 10ms of the 20ms period can correspond to 1, 2, 3, 20 The last 10ms of the ms period can correspond to 1, 2, and 4.

If it is determined that the Stealing Bits obtained in the first 10 ms is the sequence 2, and the MCS-0 is determined by the CPS, it may be determined that the corresponding radio block is the MCTI-0 coded RTTI block for signaling transmission in the RTTI USF mode; The Stealing Bits obtained in 10ms is sequence 3, and the MCS-0 is determined by CPS, then it can be determined that the corresponding radio block is the MCTI-0 encoded BTTI USF mode for the RTTI Block for signaling transmission; if it is determined that the last 10 ms is obtained The Stealing Bits is sequence 4, and the MCS-0 is determined by CPS, and it can be determined that the corresponding radio block is the MCTS-0 encoded BTTI USF mode for the RTTI Block for signaling transmission.

If it is determined that the Stealing Bits obtained in the first 10 ms is the sequence 2, and the CPS determines that it is MCS-1~4, it can be determined that the corresponding radio block is the MCS-1~4 code of the RTTI USF mode. RTTI Block for data transmission; If it is determined that the Stealing Bits obtained in the first 10ms are sequence 3, and it is determined by CPS that it is MCS-1~4, it can be determined that the corresponding radio block is the MCS-1~4 code of BTTI USF mode. RTTI Block for data transmission; if it is determined that the Stealing Bits obtained in the last 10ms is sequence 4, and the MCS-0 is determined by CPS, the corresponding radio block is encoded by MCS-1~4 of BTTI USF mode for data transmission. RTTI Block. The derivation process for the above judgment method is as follows: For the first 10ms, A should be close to the bit sequence 1 "1,1,1,1,1,1,1,1", 2 "0,0,0,1, 0,1,1,0" ,

3 "0,0,0,0,0,1,0,1". If dl=l or 2, it means that A should have 7 1 or 6 1s, and sequences 2 and 3 have only 3 1s or 2s, so d2>=3, d3>=4, ie dl< d2, d3 , so, A should be 1. For the last 10ms, A should be close to the bit sequence 1 "1,1,1,1,1,1,1,1", 2 "0,0,0,1,0,1,1,0",

4 A type of "0,1,0,1,1,0,1,0". If dl=l, it means that A should have 7 1s, and the sequence 2, 4 has only 3 1 or 4 1s, so d2>=4, d4>=3, ie dl< d2, d4, so A should be 1 . If dl=2, it means that A has 6 1s, and the sequence 2, 4 has only 3 1 or 4 1s, so d2>=3, d4>=2, ie dl< d2, d4, or dl=d4= 2<d2, so A should be 1 or 4. If dl=3, it means that A has 5 1s, and the sequence 2, 4 has only 3 1 or 4 1s, so d2>=2, d4>=l, ie dl< d2, d4, or dl=d4=2 <d2, so A should be 1 or 4. In summary, in the embodiment of the present invention, the MS only needs to detect the Stealing Bits sequence in the RTTI Block. Of course, sometimes it is necessary to detect the CPS in the RLC/MAC header of the RLC/MAC block, and the received RTTI can be received. The modulation coding scheme of the Block is distinguished. In the prior art, the modulation assignment scheme corresponding to the RTTI block used for signaling transmission may be explicitly indicated in the downlink assignment message, but this scheme excessively occupies the air interface resource, and the embodiment of the present invention is relative to this. A technical solution can save air interface resources. In addition, the scenario considered by the embodiment of the present invention covers all GMSK modulated RTTI TBF scenarios, and the embodiment of the present invention effectively ensures the correctness and success rate of the modulation and coding scheme corresponding to the MIMO-modulated RTTI block. In addition, the embodiment of the present invention further provides a method for distinguishing a modulation and coding scheme corresponding to a radio block, including: first checking whether an RTTI block corresponds to a certain modulation and coding scheme, and if yes, determining corresponding to the RTTI block. Is such a modulation and coding scheme, otherwise, it is checked whether it is another modulation and coding scheme, and if so, it is determined that the RTTI block corresponds to the other modulation and coding scheme. Solution, otherwise, continue to check if it is another modulation and coding scheme, and so on, until it is determined which modulation coding scheme corresponds to the RTTI Block. Here, this technical solution is simply referred to as blind detection. A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM). It should be noted that the embodiments of the present invention may be implemented by using hardware or by software. The units are functional units, may be physically combined into one module, or may be split into multiple sub-modules.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make thousands of improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

Rights request

A method for distinguishing a modulation and coding scheme corresponding to a radio block, comprising: obtaining a frame sequence of stealing frames in a radio block RTTI block of a reduced transmission time interval; and carrying the frame sequence of the stealth frame with an RTTI block respectively Aligning all the stealing frame bit sequences, and finding the stealing frame bit sequence closest to the stealing frame bit sequence from all the stolen frame bit sequences that may be carried;

And determining, according to the stealing frame bit sequence closest to the stealing frame bit sequence, a modulation and coding scheme corresponding to the RTTI block.

The method for distinguishing a modulation coding scheme corresponding to a radio block according to claim 1, wherein if the RTTI Block is an RTTI Block of a first 10 ms in a 20 millisecond ms period, the RTTI Block may carry All stealing frame bit sequences are three stealing frame bit sequences that may be carried by the first 10 ms RTTI block; if the RTTI block is the last 10 ms RTTI block in the 20 ms period, all the stealing frames that the RTTI block may carry The bit sequence is a sequence of three stealing frame bits that may be carried by the RTTI Block of the last 10 ms; wherein the 20 ms period is a period calculated when the base station starts transmitting the RTTI Block.

The method for determining a modulation and coding scheme corresponding to a radio block according to claim 1, wherein determining, according to the frame stealing bit sequence closest to the frame stealing bit sequence, the modulation and coding scheme corresponding to the RTTI block comprises: And determining, if the found stealing frame bit sequence closest to the stealing frame bit sequence, a modulation and coding scheme, determining that the modulation and coding scheme is a modulation and coding scheme corresponding to the RTTI block; The frame stealing bit sequence closest to the stealing frame bit sequence corresponds to a plurality of modulation and coding schemes, and the coded in the block header of the radio link control RLC/media access control MAC block of the RTTI block according to the modulation code The hole scheme instructs the CPS to distinguish the modulation coding scheme corresponding to the RTTI Block.

The method for determining a modulation and coding scheme corresponding to a radio block according to claim 1, wherein the determining a modulation and coding scheme corresponding to the RTTI block according to the sequence of stealing frame bits closest to the frame stealing bit sequence comprises: : if the stolen frame bit sequence found closest to the stolen frame bit sequence is a plurality of stealing frame bit sequences, then another 10 ms RTTI in the same 20 ms period to be obtained is obtained. The modulation frame coding sequence corresponding to the closest frame stealing bit sequence of the three stealing frame bit sequences that the other 10 ms RTTI block may carry is the modulation coding scheme corresponding to the RTTI block.

The method for distinguishing a modulation coding scheme corresponding to a radio block according to claim 1, wherein the RTTI block is determined according to the frame stealing bit sequence closest to the frame stealing bit sequence. The modulation coding scheme includes: if the found stealing frame bit sequence closest to the stealing frame bit sequence is a plurality of stealing frame bit sequences, and possibly carrying another 10 ms RTTI block in the same 20 ms period A plurality of stealing frame bit sequences closest to the obtained stealing frame bit sequence of another 10 ms RTTI block in the same 20 ms period are found in the stealing frame bit sequence, and then one of the three stealing frame bit sequences is arbitrarily selected. The frame stealing bit sequence is used as a corresponding modulation and coding scheme as a modulation and coding scheme corresponding to the RTTI block.

The method for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 1, wherein the RTTI block is determined according to the frame stealing bit sequence closest to the frame stealing bit sequence. The modulation coding scheme includes: if the found stealing frame bit sequence closest to the stealing frame bit sequence is a plurality of stealing frame bit sequences, and possibly carrying another 10 ms RTTI block in the same 20 ms period In the stealing frame bit sequence, a plurality of stealing frame bit sequences closest to the obtained stealing frame bit sequence of the other 10 ms RTTI block in the same 20 ms period are found, and then it is checked whether the RTTI block corresponds to the three types of stealing. One of the modulation and coding schemes corresponding to the frame bit sequence respectively, if yes, determining that the RTTI block corresponds to the one of the modulation and coding schemes, otherwise, checking whether the RTTI block corresponds to One of the three modulation coding schemes corresponding to the three types of stealing frame bit sequences respectively, if yes, then The RTTI block is determined to be another one of the modulation and coding schemes. Otherwise, it is determined that the RTTI block corresponds to the remaining one of the modulation coding schemes corresponding to the three types of frame stealing bit sequences respectively. .

The method for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 1 or 2, wherein the stolen frame bit sequence is compared with all stolen frame bit sequences that the RTTI block may carry, respectively. The stolen frame bit sequence that is closest to the stolen frame bit sequence in the sequence of all stolen frame bits that may be carried includes: calculating, respectively, between the stolen frame bit sequence and all stolen frame bit sequences that the RTTI block may carry Hamming distance, looking for all the stolen frame bit sequences that may be carried A sequence of stealing frame bits with a minimum Hamming distance from the stolen frame bit sequence.

8. The apparatus for distinguishing a modulation and coding scheme corresponding to a radio block, comprising: an obtaining unit, configured to obtain a frame stealing bit sequence in a TTI block; and a comparing unit, configured to obtain the obtained unit The stolen frame bit sequence is respectively compared with all the stealing frame bit sequences that the RTTI block may carry, and the stolen frame bit sequence closest to the stolen frame bit sequence is found from all the stolen frame bit sequences that may be carried; And a unit, configured to determine, according to the stealing frame bit sequence that is found by the comparing unit and closest to the stealing frame bit sequence, a modulation and coding scheme corresponding to the RTTI block.

The apparatus for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 8, wherein the determining unit comprises: a first distinguishing module, configured to: if the found bit and the stolen frame bit sequence are the most The close stealing frame bit sequence corresponds to only one modulation and coding scheme, and then the modulation and coding scheme is determined to be a modulation and coding scheme corresponding to the RTTI block; if the found stolen frame closest to the stolen frame bit sequence is found The bit sequence corresponds to a plurality of modulation and coding schemes, and the modulation and coding scheme corresponding to the RTTI block is distinguished according to the CPS in the block header of the RLC/MAC block of the RTTI block.

The apparatus for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 8, wherein the determining unit comprises: a second distinguishing module, configured to: if the comparison unit finds the stolen frame The closest frame stealing bit sequence of the bit sequence is two stealing frame bit sequences, and the obtained 10 ms RTTI Block stealing frame bit sequence in the same 20 ms period and the other 10 ms RTTI Block may carry The modulation coding scheme corresponding to the closest frame stealing bit sequence in the frame stealing bit sequence is used as the modulation coding scheme corresponding to the RTTI block.

The apparatus for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 8, wherein the determining unit comprises: a third distinguishing module, configured to: if the found bit and the stolen frame bit sequence are the most The close stealing frame bit sequence is a plurality of stealing frame bit sequences, and multiple of the three stealing frame bit sequences that may be carried in the other 10 ms RTTI block in the same 20 ms period are found in the same 20 ms period as obtained. In addition, the closest frame stealing bit sequence of the 10 bit RTTI block stealing frame bit sequence is arbitrarily selected from the three stealing frame bit sequences as a corresponding modulation and coding scheme as the modulation corresponding to the TTI block. Coding scheme.

The apparatus for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 8, wherein the determining unit comprises: a fourth distinguishing module, configured to: if the found bit and the stolen frame bit sequence are the most The close stealing frame bit sequence is a plurality of stealing frame bit sequences, and multiple of the three stealing frame bit sequences that may be carried in the other 10 ms RTTI block in the same 20 ms period are found in the same 20 ms period as obtained. In addition, the closest frame stealing bit sequence of the stealing frame bit sequence of the RTTI block of the 10 ms is first checked whether the RTTI block corresponds to one of the modulation and coding schemes corresponding to the three types of stealing frame bit sequences respectively. If yes, determining that the RTTI block corresponds to one of the modulation and coding schemes. Otherwise, checking whether the RTTI block corresponds to one of the modulation coding schemes corresponding to the three types of stolen frame bit sequences respectively. a modulation coding scheme, such as 杲, determining that the RTTI block corresponds to the other modulation coding scheme, otherwise Determining the RTTI Block corresponding to the remaining one modulation coding scheme is a modulation coding scheme corresponding to each frame bit sequence of the three kinds of stealing.

The apparatus for distinguishing a modulation and coding scheme corresponding to a radio block according to claim 8, wherein the comparison unit compares the frame stealing bit sequence with all stealing frame bit sequences that the RTTI block may carry, respectively. Opposing, respectively, calculating a Hamming distance between the stealing frame bit sequence and all the stealing frame bit sequences that the RTTI block may carry; the comparing unit is found from the all stolen frame bit sequences that may be carried When stealing the frame bit sequence closest to the frame bit sequence, the frame stealing bit sequence having the smallest Hamming distance from the stealing frame bit sequence is found from all the stealing frame bit sequences that may be carried.

A terminal, comprising the apparatus of any one of claims 8-13.

15. A computer readable storage medium, comprising: a program for performing the method of any of claims 1-7.