CN101998507A - Transmission method and system of downlink control signalling - Google Patents
Transmission method and system of downlink control signalling Download PDFInfo
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- CN101998507A CN101998507A CN2009101626384A CN200910162638A CN101998507A CN 101998507 A CN101998507 A CN 101998507A CN 2009101626384 A CN2009101626384 A CN 2009101626384A CN 200910162638 A CN200910162638 A CN 200910162638A CN 101998507 A CN101998507 A CN 101998507A
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Abstract
The invention discloses a transmission method of a downlink control signalling, comprising the following steps of: setting a mode select bit in a grouping special control channel by an eNode B according to an uplink transmitting mode to be configured for UE (User Equipment), forming the transmitting format of the DCI (Downlink Control Signalling) by using the mode select bit and an uplink authorization information bit and transmitting to the UE; and configuring the uplink transmitting mode by the UE according to the analyzed value of the mode select bit, the information of the uplink authorization information bit and the information of an ACK/NACK (Acknowledgement /Negative Acknowledgement) bit. The invention also discloses a transmission system of the downlink control signalling. The invention can be used for realizing that the eNode B enables the uplink authorizations of a mode 1 and a mode 2 of the UE to be compatible through the uniform DCI transmitting mode.
Description
Technical field
The present invention relates to the transmission technology in the radio communication, relate in particular to a kind of transmission method and system of descending control signaling.
Background technology
Improved Long Term Evolution (LTE-A, Long Term Evolution-Advance) in the system, subscriber equipment (UE) is supported more transmitting antenna, such as: support up 44 antenna configurations of receiving, with respect to LTE release8 version, improved the upstream data throughput like this.The needed uplink authorization information of subscriber equipment (UL grant) is included in the descending control signaling (DCI), evolution base station (eNode B) is by sending DCI to subscriber equipment, information such as the resource allocation that notifying user equipment is relevant, emission mode, re-transmission form.
In 56 meetings of 3GPP, for up emission mode, just like drawing a conclusion:
1, selects two modulating-codings (MCS, Modulation code Scheme) scheme for use;
2, continue two kinds of emission modes of research, comprising: pattern 1 and pattern 2.
Wherein, pattern 1 is space packing that does not mix automatic repeat requests response (HARQ-ACK) and the pattern that does not have layer exchange; Do not adopt space packing and layer exchange, can bring the flexibility of scheduling, make pattern 1 use higher MCS scheme under the situation preferably, increase system flexibility at channel condition.When uplink authorization is pattern 1, the DCI of eNode B emission needs affirmation/non-affirmation (ACK/NACK) information of independent retransmission indicating chanel (PHICH), new data indication (NDI) information and redundancy versions (RV) information of grouping Dedicated Control Channel (PDCCH) respectively to the transmission block of each code word (CW).
DCI emission form in the pattern 1 as shown in Figure 1, in the mode of using among the 3GPP release8, use redundancy versions (MCS-RV) information of the modulating-coding of 5bits information representation CW1 and CW2 transmission block respectively, use the NDI information of 1bit information representation CW1 and CW2 transmission block respectively, this 12bits information is included among the PDCCH; Use the ACK/NACK information of 1bit information representation CW1 and CW2 transmission block respectively, this 2bits information is included among the PHICH.
Pattern 2 is the pattern of the HARQ-ACK space packing of belt exchange; Adopt the HARQ-ACK space packing of belt exchange,, the channel-decoding accuracy is improved by exchange for the unbalanced situation of channel, improve overall performance, but this kind mode has reduced the flexibility of system, is the expense of saving DCI with the partial properties of sacrificial system.When uplink authorization is pattern 2, the DCI of eNo de B emission, it mainly influences NDI information among the DCI of PDCCH and the ACK/NACK information of PHICH, the transmission block of two code words uses same NDI position and ACK/NACK position, like this, just can save the expense of the DCI of 1bit NDI position and 1bitACK/NACK position;
DCI emission form in the pattern 2 as shown in Figure 2, in the mode of using among the 3GPP release8, use the MCS-RV information of 5bits information representation CW1 transmission block and CW2 respectively, use 1bit information representation CW1 and the shared NDI information of CW2 transmission block, this 11bits information is included among the PDCCH; Re-use the shared ACK/NACK information of 1bit information representation CW1 and CW2 transmission block, this 1bit information is included among the PHICH.
Above-mentioned two kinds of patterns all adopt to be mixed automatic repeat requests (HARQ) technology and are realized to the adaptivity of channel condition and the modulation algorithm of high-order more, with the message transmission rate and the spectrum efficiency of raising system.Wherein, HARQ is as a kind of link adaptation techniques, for system provides accurate data rate adjustment based on channel condition, and main through-rate coupling of this function and bit rearrangement, control data retransmission version is realized.Wherein, HARQ-ACK represents the block of information of bust this is not retransmitted, and HARQ-NACK represents the block of information of bust this is retransmitted.
From the above mentioned, based on current LTE-A Progress in technique, pattern 1 and pattern 2 all have advantage separately under different scenes, but also do not have a kind of unified DCI emission form at present, can compatibility mode 1, the uplink authorization of two kinds of uplink modes of pattern 2.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of transmission method and system of descending control signaling, makes the DCI can compatibility mode 1 and the uplink authorization of 2 two kinds of uplink modes of pattern.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of transmission method of descending control signaling, this method comprises:
ENode B is provided with the model selection position in PDCCH, and model selection position and uplink authorization information bit composition DCI emission form are sent to UE;
UE is according to the value of model selection position among the DCI that parses, according to the information of the uplink authorization information bit of DCI and the up emission mode of information configuration of affirmation/non-affirmation ACK/NACK position.
In the such scheme, described eNode B is provided with the model selection position and is specially in PDCCH: eNode B be a model selection position assignment according to the up emission mode that will dispose to UE;
In the time of will being pattern 1 to the up emission mode of UE configuration, the value of described model selection position is changed to 1; In the time of will being pattern 2 to the up emission mode of UE configuration, the value of described model selection position is changed to 0.
In the such scheme, before UE sends DCI, eNode B to the uplink authorization information bit among the DCI, and PHICH in the ACK/NACK position be configured; Wherein, the uplink authorization information bit comprises: the MCS-RV position of the 5bits of each code word and the NDI position of 1bit, two code words are 12bits altogether.
In the such scheme, described uplink authorization information bit among the DCI and the ACK/NACK position among the PHICH are configured is specially:
In the time of will being pattern 1 to the up emission mode of UE configuration, to the MCS-RV position of the independent 5bits of each code word configuration and the NDI position of 1bit, and the ACK/NACK position that each code word is disposed independent 1bit; In the time of will being pattern 2 to the up emission mode of UE configuration, to the MCS-RV position of the independent 5bits of each code word configuration, and only dispose the NDI position of 1bit of first code word and the ACK/NACK position of 1bit, shared by two code words, the NDI position of second code word be a sky.
In the such scheme, described when UE sends DCI, the information that sends the ACK/NACK position is to UE.
In the such scheme, the described DCI that sends to UE comprises: model selection position, first code word and second code word; Wherein, highest order is the model selection position, and value is 1 or 0; In the remaining bit, high 6 is the 5bits MCS-RV position and the 1bitNDI position of first code word; The model selection position is 0 o'clock, and the NDI position is that two code words are shared; Low 6 is the 5bits MCS-RV position and the 1bit NDI position of second code word; The model selection position is 0 o'clock, and the NDI position is empty.
In the such scheme, the information of described uplink authorization information bit according to DCI and the up emission mode of information configuration of ACK/NACK position are specially:
The value of model selection position is 1 o'clock among the DCI that parses, respectively according to the up emission mode of information configuration of 5bitsMCS-RV position, 1bit NDI position and the 1bitACK/NACK position of each code word;
The value of model selection position is 0 o'clock among the DCI that parses, respectively according to the up emission mode of information configuration of the 5bitsMCS-RV position of each code word, and according to the up emission mode of information configuration of the information of the shared 1bit NDI position of two code words and shared 1bit ACK/NACK position.
The present invention also provides a kind of transmission system of descending control signaling, and this system comprises:
ENode B is used at PDCCH the model selection position being set, and model selection position and uplink authorization information bit composition DCI emission form are sent to UE;
UE is used to receive DCI and according to the emission form of DCI DCI is decoded, according to the value of model selection position among the DCI that parses, according to the information of uplink authorization information bit and the up emission mode of information configuration of ACK/NACK position.
In the such scheme, described eNode B is further used for according to will uplink authorization information bit among the DCI and the ACK/NACK position among the PHICH being configured to the up emission mode of UE configuration; Also be used for when sending DCI, sending the information of ACK/NACK position to UE; Described UE is further used for receiving the information of ACK/NACK position.
In the such scheme, described eNode B further comprises:
Pattern position configuration module is used for according to defining 1bit and be configured as the model selection position in PDCCH to the up emission mode of UE configuration;
The uplink authorization configuration module is used for the uplink authorization information bit of DCI is configured;
The ACK/NACK configuration module is used for the ACK/NACK position of PHICH is configured;
The DCI sending module is used for the 12bits uplink authorization information bit of the 1bit model selection position of pattern position configuration module and uplink authorization configuration module is formed the emission form of DCI, is transmitted to UE;
The ACK/NACK sending module is used for the information of the ACK/NACK position of ACK/NACK configuration module configuration is sent to UE.
In the such scheme, described UE further comprises:
Receiver module is used to receive the DCI of eNode B transmission and the information of ACK/NACK position;
Decoder module is used for the DCI that receiver module receives is decoded;
First configuration module is used for the value of the model selection position of the DCI that parses according to decoder module, according to the up emission mode of uplink authorization information configuration of DCI;
Second configuration module is used for the value of the model selection position of the DCI that parses according to decoder module, the up emission mode of information configuration of the ACK/NACK position that receives according to receiver module.
The transmission method of descending control signaling provided by the present invention and system, will be by eNode B basis to the up emission mode of UE configuration, the model selection position is set in PDCCH, the emission form of model selection position and uplink authorization information bit composition DCI is sent to UE, and the information that sends the ACK/NACK position simultaneously is to UE; UE is according to the value that parses model selection position among the DCI, according to the information of DCI uplink authorization information bit and the up emission mode of information configuration of ACK/NACK position.Like this, just can realize eNode B with unified DCI emission form, the uplink authorization of the pattern 1 of compatible UE, 2 two kinds of up emission modes of pattern makes the base station under different scenes, can carry out the configuration of different up emission modes to UE, obtain preferable system gain.
Description of drawings
Fig. 1 is the DCI emission form schematic diagram of pattern 1 for uplink authorization in the prior art;
Fig. 2 is the DCI emission form schematic diagram of pattern 2 for uplink authorization in the prior art;
Fig. 3 is for realizing the schematic flow sheet of descending control signaling transmission method among the present invention;
Fig. 4 is the DCI emission form schematic diagram of uplink authorization compatibility mode 1 among the present invention and pattern 2;
Fig. 5 is for realizing the structural representation of descending control signaling transmission system among the present invention.
Embodiment
Basic thought of the present invention is: eNode B is provided with the model selection position in PDCCH, and model selection position and uplink authorization information bit composition DCI emission form are sent to UE; UE is according to the value of model selection position among the DCI that parses, according to the information of the uplink authorization information bit of DCI and the up emission mode of information configuration of ACK/NACK position, thereby realize that eNode B is with unified DCI emission form, the uplink authorization of the pattern 1 of compatible UE, 2 two kinds of up emission modes of pattern.
Here, model selection bit stealing 1bit, and eNode B is according to will be to the up emission mode of UE configuration to model selection position assignment; The value of model selection position is among the described DCI of parsing: UE decodes to DCI according to the emission form of DCI.
Further, eNode B is configured uplink authorization information bit among the DCI and the ACK/NACK position among the PHICH, and sends the information of ACK/NACK position to UE in transmission DCI.
Below in conjunction with drawings and the specific embodiments the present invention is described in further detail again.
The transmission method that the present invention realizes a kind of descending control signaling may further comprise the steps as shown in Figure 3:
Step 301:eNode B is provided with the model selection position in PDCCH, and according to will be to the up emission mode of UE configuration to model selection position assignment;
Wherein, model selection bit stealing 1bit; Described model selection position assignment is specially: when eNode B will be pattern 1 to the up emission mode of UE configuration, the value of model selection position among the PDCCH is changed to 1; When eNode B will be pattern 2 to the up emission mode of UE configuration, the value of model selection position among the PDCCH is changed to 0.
Step 302: according to will uplink authorization information bit among the DCI and the ACK/NACK position among the PHICH being configured to the up emission mode of UE configuration;
Concrete, described uplink authorization information bit comprises: the MCS-RV position of the 5bits of each code word and the NDI position of 1bit, and two code words are 12bits altogether;
In the time will being pattern 1, each code word all being disposed the MCS-RV position of independent 5bits and the NDI position of 1bit, and each code word is disposed the ACK/NACK position of independent 1bit to the up emission mode of UE configuration;
In the time will being pattern 2 to the up emission mode of UE configuration, each code word is all disposed the MCS-RV of independent 5bits, only dispose the NDI position of 1bit of first code word and the ACK/NACK position of 1bit, give two code words shared, the NDI position of second code word be a sky.
Step 303: model selection position and uplink authorization information bit composition DCI emission form are sent to UE;
In this step, described DCI emission form comprises model selection position, CW1 and CW2 as shown in Figure 4, and wherein, the model selection position is a highest order, and value is 1 or 0; Value is 1 o'clock, and expression collocating uplink emission mode is a pattern 1; Value is 0 o'clock, and expression collocating uplink emission mode is a pattern 2;
In all the other 12, high 6 is 5bits MCS-RV position and the 1bit NDI position of CW1; In the model selection position is 0 o'clock, and the NDI position is that CW1 and CW2 are shared; Low 6 is 5bits MCS-RV position and the 1bit NDI position of CW2; Is 0 o'clock in model selection for the position, and the NDI position is empty;
In this step, can further send the information of ACK/NACK position simultaneously to UE.
Step 304:UE is according to the value of the model selection position of the DCI that parses, according to the information of the uplink authorization information bit of DCI and the up emission mode of information configuration of ACK/NACK position;
Concrete, when UE receives the information of DCI and ACK/NACK position, carry out the decoding of DCI according to the emission form of DCI, the value of model selection position is 1 o'clock in the DCI that parses, show that up emission mode is a pattern 1, do not adopt space packing and layer exchange, then respectively according to the up emission mode of information configuration of 5bits MCS-RV position, 1bit NDI position and the 1bit ACK/NACK position of each code word; The value of model selection position is 0 o'clock in the DCI that parses, show that up emission mode is a pattern 2, adopt the HARQ-ACK space packing of belt exchange, then respectively according to the up emission mode of information configuration of the 5bits MCS-RV position of each code word, and according to the up emission mode of information configuration of the information of the shared 1bit NDI position of two code words and shared 1bitACK/NACK position.So far, the UE configuration is finished.
For realizing said method, the present invention also proposes a kind of transmission system of descending control signaling, and as shown in Figure 5, this system comprises: eNode B 51, UE 52; Wherein,
Here, model selection bit stealing 1bit; ENode B 51 is a model selection position assignment according to the up emission mode that will give UE 52 configurations;
Described eNode B 51 further comprises: pattern position configuration module 511, uplink authorization configuration module 512, ACK/NACK configuration module 513, DCI sending module 514, ACK/NACK sending module 515;
Pattern position configuration module 511 is used at PDCCH the model selection position being set according to the up emission mode that will give UE 52 configurations;
Concrete, when described pattern position configuration module 511 be pattern 1 at the up emission mode that will give UE 52 configurations, the value of model selection position among the PDCCH is changed to 1; When the up emission mode that will give UE 52 configurations be pattern 2, the value of model selection position among the PDCCH is changed to 0.
Uplink authorization configuration module 512 is used for being configured according to the uplink authorization information bit of the up emission mode that will give UE 52 configurations to DCI;
Concrete, when described uplink authorization configuration module 512 is pattern 1 at the up emission mode that will give UE 52 configurations, each code word is all disposed the MCS-RV position of independent 5bits and the NDI position of 1bit; When the up emission mode that will give UE 52 configurations be pattern 2, each code word is all disposed the MCS-RV position of independent 5bits, but the NDI position that only disposes the 1bit of first code word gives two code words shared, the NDI position of second code word be a sky;
ACK/NACK configuration module 513 is used for being configured according to the ACK/NACK position of the up emission mode that will give UE 52 configurations to PHICH;
Concrete, when described ACK/NACK configuration module 513 is pattern 1 at the up emission mode that will give UE 52 configurations, the ACK/NACK position that in PHICH, each code word is all disposed independent 1bit; When the up emission mode that will give UE 52 configurations was pattern 2, the ACK/NACK position that only disposes 1bit in PHICH gave two code words shared.
DCI sending module 514 is used for the 12bits uplink authorization information bit of the 1bit model selection position of pattern position configuration module 511 and uplink authorization configuration module 512 is formed the emission form of DCI, as shown in Figure 6, is transmitted to UE 52;
ACK/NACK sending module 515 is used for the information of the ACK/NACK position of ACK/NACK configuration module 513 configuration is sent to UE 52;
Described UE 52 further comprises: receiver module 521, decoder module 522, first configuration module 523, second configuration module 524;
Receiver module 521 is used to receive the DCI of eNode B 51 transmissions and the information of ACK/NACK position;
Decoder module 522 is used for the DCI that receiver module 521 receives is decoded;
First configuration module 523 is used for the value of the model selection position of the DCI that parses according to decoder module 522, according to the up emission mode of uplink authorization information configuration of DCI;
Concrete, the value of the model selection position of the DCI that described first configuration module 523 parses at decoder module 522 is 1 o'clock, show that up emission mode is a pattern 1, do not adopt space packing and layer exchange, then respectively according to the information of the 5bits MCS-RV position of each code word, the up emission mode of information configuration of 1bit NDI position; Value in the model selection position of the DCI that parses is 0 o'clock, show that up emission mode is a pattern 2, adopt the HARQ-ACK space packing of belt exchange, then respectively according to the up emission mode of information configuration of the 5bits MCS-RV position of each code word, and according to the up emission mode of information configuration of the shared 1bit NDI position of two code words.
Second configuration module 524 is used for the value of the model selection position of the DCI that parses according to decoder module, the up emission mode of information configuration of the ACK/NACK position that receives according to receiver module 521;
Concrete, the value of the model selection position of the DCI that described second configuration module 524 parses at decoder module 522 is 1 o'clock, show that up emission mode is a pattern 1, do not adopt space packing and layer exchange, then the up emission mode of information configuration of the 1bit ACK/NACK position of each code word that receives according to receiver module 521 respectively; Value in the model selection position of the DCI that parses is 0 o'clock, show that up emission mode is a pattern 2, adopt the HARQ-ACK space packing of belt exchange, then the up emission mode of information configuration of the ACK/NACK position of the shared 1bit of two code words that receive according to receiver module 521.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the transmission method of a descending control signaling is characterized in that, this method comprises:
Evolution base station eNode B is provided with the model selection position in grouping Dedicated Control Channel PDCCH, and model selection position and uplink authorization information bit composition descending control signaling DCI emission form are sent to user equipment (UE);
UE is according to the value of model selection position among the DCI that parses, according to the information of the uplink authorization information bit of DCI and the up emission mode of information configuration of affirmation/non-affirmation ACK/NACK position.
2. transmission method according to claim 1 is characterized in that, described eNode B is provided with the model selection position and is specially in PDCCH: eNode B be a model selection position assignment according to the up emission mode that will dispose to UE;
In the time of will being pattern 1 to the up emission mode of UE configuration, the value of described model selection position is changed to 1; In the time of will being pattern 2 to the up emission mode of UE configuration, the value of described model selection position is changed to 0.
3. transmission method according to claim 1 and 2 is characterized in that, before UE sends DCI, eNode B to the uplink authorization information bit among the DCI, and retransmission indicating chanel PHICH in the ACK/NACK position be configured; Wherein, the uplink authorization information bit comprises: the redundancy versions MCS-RV position of the modulating-coding of the 5bits of each code word and the new data of 1bit indication NDI position, two code words are 12bits altogether.
4. transmission method according to claim 3 is characterized in that, described uplink authorization information bit among the DCI and the ACK/NACK position among the PHICH are configured is specially:
In the time of will being pattern 1 to the up emission mode of UE configuration, to the MCS-RV position of the independent 5bits of each code word configuration and the NDI position of 1bit, and the ACK/NACK position that each code word is disposed independent 1bit;
In the time of will being pattern 2 to the up emission mode of UE configuration, to the MCS-RV position of the independent 5bits of each code word configuration, and only dispose the NDI position of 1bit of first code word and the ACK/NACK position of 1bit, shared by two code words, the NDI position of second code word be a sky.
5. transmission method according to claim 1 and 2 is characterized in that, described when UE sends DCI, the information that sends the ACK/NACK position is to UE.
6. transmission method according to claim 1 and 2 is characterized in that, the described DCI that sends to UE comprises: model selection position, first code word and second code word; Wherein,
Highest order is the model selection position, and value is 1 or 0;
In the remaining bit, high 6 is the 5bits MCS-RV position and the 1bit NDI position of first code word; The model selection position is 0 o'clock, and the NDI position is that two code words are shared; Low 6 is the 5bits MCS-RV position and the 1bit NDI position of second code word; The model selection position is 0 o'clock, and the NDI position is empty.
7. transmission method according to claim 2 is characterized in that, the information of described uplink authorization information bit according to DCI and the up emission mode of information configuration of ACK/NACK position are specially:
The value of model selection position is 1 o'clock among the DCI that parses, respectively according to the up emission mode of information configuration of 5bitsMCS-RV position, 1bit NDI position and the 1bit ACK/NACK position of each code word;
The value of model selection position is 0 o'clock among the DCI that parses, respectively according to the up emission mode of information configuration of the 5bitsMCS-RV position of each code word, and according to the up emission mode of information configuration of the information of the shared 1bitNDI position of two code words and shared 1bit ACK/NACK position.
8. the transmission system of a descending control signaling is characterized in that, this system comprises:
ENode B is used at PDCCH the model selection position being set, and model selection position and uplink authorization information bit composition DCI emission form are sent to UE;
UE is used to receive DCI and according to the emission form of DCI DCI is decoded, according to the value of model selection position among the DCI that parses, according to the information of uplink authorization information bit and the up emission mode of information configuration of ACK/NACK position.
9. transmission system according to claim 8 is characterized in that, described eNode B is further used for according to will uplink authorization information bit among the DCI and the ACK/NACK position among the PHICH being configured to the up emission mode of UE configuration; Also be used for when sending DCI, sending the information of ACK/NACK position to UE;
Described UE is further used for receiving the information of ACK/NACK position.
10. according to Claim 8 or 9 described transmission systems, it is characterized in that described eNode B further comprises:
Pattern position configuration module is used for according to defining 1bit and be configured as the model selection position in PDCCH to the up emission mode of UE configuration;
The uplink authorization configuration module is used for the uplink authorization information bit of DCI is configured;
The ACK/NACK configuration module is used for the ACK/NACK position of PHICH is configured;
The DCI sending module is used for the 12bits uplink authorization information bit of the 1bit model selection position of pattern position configuration module and uplink authorization configuration module is formed the emission form of DCI, is transmitted to UE;
The ACK/NACK sending module is used for the information of the ACK/NACK position of ACK/NACK configuration module configuration is sent to UE.
11. transmission system according to claim 10 is characterized in that, described UE further comprises:
Receiver module is used to receive the DCI of eNode B transmission and the information of ACK/NACK position;
Decoder module is used for the DCI that receiver module receives is decoded;
First configuration module is used for the value of the model selection position of the DCI that parses according to decoder module, according to the up emission mode of uplink authorization information configuration of DCI;
Second configuration module is used for the value of the model selection position of the DCI that parses according to decoder module, the up emission mode of information configuration of the ACK/NACK position that receives according to receiver module.
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| US9571236B2 (en) | 2012-03-19 | 2017-02-14 | China Academy Of Telecommunications Technology | Downlink control signalling transmission method and device |
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| CN113630882A (en) * | 2016-03-02 | 2021-11-09 | 三星电子株式会社 | Method and apparatus for uplink channel access in wireless communication system |
| WO2018113589A1 (en) * | 2016-12-21 | 2018-06-28 | Jrd Communication (Shenzhen) Ltd | Ack/nack bundling in wireless communication systems |
| CN110140312A (en) * | 2017-01-07 | 2019-08-16 | Lg 电子株式会社 | The method of terminal retransmission data in wireless communication system and the communication equipment for using this method |
| CN110140312B (en) * | 2017-01-07 | 2022-01-11 | Lg 电子株式会社 | Method for retransmitting data by terminal in wireless communication system and communication apparatus using the same |
| US11283551B2 (en) | 2017-01-07 | 2022-03-22 | Lg Electronics Inc. | Method for terminal resending data in wireless communication system, and communication device using same |
| US11539469B2 (en) | 2017-01-07 | 2022-12-27 | Lg Electronics Inc. | Method for terminal resending data in wireless communication system, and communication device using same |
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