CN101651516B - Method and system for encoding modulation - Google Patents
Method and system for encoding modulation Download PDFInfo
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- CN101651516B CN101651516B CN 200810130811 CN200810130811A CN101651516B CN 101651516 B CN101651516 B CN 101651516B CN 200810130811 CN200810130811 CN 200810130811 CN 200810130811 A CN200810130811 A CN 200810130811A CN 101651516 B CN101651516 B CN 101651516B
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Abstract
The invention discloses a method and a system for encoding modulation. The method comprises the following steps that: a transceiver determines the efficiency of frequency spectrums and the encoding packet length of transmission according to channel quality information acquired by the transceiver; and the transceiver determines a modulation mode according to the efficiency of the frequency spectrums, determines usable physical channel resources according to the efficiency of the frequency spectrums and the encoding packet length of the transmission, and determines the encoding code rate according to the encoding packet length of the transmission, the determined modulation mode and the determined usable physical channel resources. The method and a system determine the modulation mode and the encoding code rate by reasonably selecting the efficiency of the frequency spectrums and the size of a transmission block, transmit data through the determined modulation mode and the determined encoding code rate, and can effectively utilize the physical channel resources and save signaling overhead.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of code modulating method and system.
Background technology
Third generation affiliate (3rd Generation Partnership Project, referred to as 3GPP) (Long Term Evolution, referred to as LTE) systems such as system and WIMAX are by using adaptive coding and modulating (Adaptive Modulation and Coding, referred to as AMC) scheme replaces power control (Power Control, referred to as PC), utilized fully the transmitting power of base station, like this, when the user who sits pretty and channel condition are good, can take full advantage of system resource, improve transmission rate, and when bad channel conditions, can not improve power, can not increase the interference to other users and residential quarter.
Wherein, the basic principle of AMC is to select suitable modulation and coded set (Modulation and Coding Scheme according to the variation of wireless channel, referred to as MCS), network side is selected only down link modulation and coded system according to user's instantaneous channel quality status and present resource, AMC utilizes the characteristic of channel of fading channel between correlatoin fading channel constant, by the measurement to current channel quality, the code modulation mode of real time altering system makes the throughput of system reach maximum.
Fig. 1 shows complete AMC process, and as shown in Figure 1, at first, base station A is to signal that is used for channel measurement of travelling carriage B emission, and travelling carriage B calculates the channel quality of current time according to the signal that receives; Then, travelling carriage B reports base station A according to predetermined mode with the channel quality reporting of current time; At last, base station A selects suitable code modulation mode to send data to travelling carriage B according to this channel quality reporting.Wherein, spectrum efficiency, namely order of modulation code check long-pending (Modulation order Product code Rate is referred to as MPR) determines that by channel quality channel quality is better, and the MPR value is higher, and channel quality is poorer, and the MPR value is lower.
In 3GPP LTE system, the base station is by channel quality indication (the Channel Quality Indicator of travelling carriage feedback, referred to as CQI), determine suitable MCS (being MPR), then according to operational Physical Resource Block (Physical Resource Block, referred to as PRB) number, table look-up and obtain current time transmission block size (Transfer BlockSize, referred to as TBS), the base station is notified travelling carriage with MCS and PRB in the mode of signaling, and sends business datum to travelling carriage, after travelling carriage obtains the MCS and PRB signaling of base station transmission, can obtain by tabling look-up current TBS and correct receive data.But the modulation coding mode that each TBS is corresponding is limited, so that it is relatively poor to adaptive HARQ support, and when operational Physical Resource Block number was more, the signaling consumption of system can be larger.
In the Wimax system, the base station is the spendable coded block size N of current business to the signaling that travelling carriage sends
EPWith spendable subchannel number N
SCH, and pass through N
EPAnd N
SCHDetermine MPR, then determine modulation system according to the span of MPR, and then definite encoder bit rate; Travelling carriage obtains N
EPAnd N
SCHAfter the signaling, obtain corresponding modulation system and encoder bit rate by same mode.But this method can not reflect the condition of channel intuitively, the inhomogeneous situation of granularity also can appear in MPR, the obvious corresponding relation that lacks simultaneously the adjustment power adjustment of equal value (perhaps signal to noise ratio adjustment) of MCS grade, be unfavorable for the combination of the multiple strategy of link circuit self-adapting, thereby can reduce the efficient of transfer of data and the throughput of link.
Summary of the invention
Consider that the existing modulation coding mode that exists in the correlation technique is unfavorable for the combination of the multiple strategy of link circuit self-adapting, reduce the efficient of transfer of data and link throughput problem and the present invention is proposed, for this reason, main purpose of the present invention is to provide a kind of code modulating method and system, to address the above problem.
According to an aspect of the present invention, provide a kind of code modulating method.
Code modulating method according to the present invention comprises: transceiver is determined the encoded packets length of spectrum efficiency and transmission according to its channel quality information that obtains; Transceiver is determined modulation system according to spectrum efficiency, encoded packets length according to spectrum efficiency and transmission is determined spendable physical channel resources, and determines encoder bit rate according to the encoded packets length of transmission, definite modulation system and definite spendable physical channel resources.
Wherein, above-mentioned transceiver determines that according to spectrum efficiency modulation system specifically comprises: the segmented node that the transceiver basis is scheduled to is divided into three sections with the span of spectrum efficiency, wherein, when 0＜MPR＜a, the modulation system of employing is the QPSK modulation of order of modulation MOD=2, when a≤MPR＜b, the modulation system that adopts is the 16QAM modulation of order of modulation MOD=4, when b≤MPR＜c, the modulation system of employing is the 64QAM modulation of order of modulation MOD=6, wherein, MPR represents spectrum efficiency, a, b, c are segmented node, a, b, the c value is arithmetic number, and a＜b＜c.
Preferably, determine that according to the encoded packets length of spectrum efficiency and transmission spendable physical channel resources specifically comprises: the encoded packets length to data symbolic number, spectrum efficiency, transmission rounds, and determines spendable physical channel resources.
Preferably, can determine physical channel resources according to following formula: N=ceil (N
EP/ (N
Data* MPR)), wherein, N represents spendable physical channel resources, and ceil represents to round up, N
EPThe encoded packets length of expression transmission, N
DataExpression data symbol number, MPR represents spectrum efficiency.
Preferably, determine that according to the encoded packets length of transmission, definite modulation system and definite spendable physical channel resources encoder bit rate specifically comprises: encoder bit rate is by formula Rate=N
EP/ (N
Data* N*MOD) determine, wherein, Rate presentation code code check, N
EPThe encoded packets length of expression transmission, N represents that the spendable physical channel resources determined, MOD represent the modulation system of determining.
Further, the method also comprises: transceiver sends data to other transceivers, or receives the data from other transceivers according to the modulation system of determining, definite spendable physical channel resources, definite encoder bit rate.
According to an aspect of the present invention, provide a kind of code modulating method.
Code modulating method according to the present invention comprises: transceiver is determined the encoded packets length of spectrum efficiency and transmission according to its channel quality information that obtains, and notifies to other transceivers; Other transceivers are determined modulation system according to spectrum efficiency, encoded packets length according to spectrum efficiency and transmission is determined spendable physical channel resources, and determines encoder bit rate according to the encoded packets length of transmission, definite modulation system and definite spendable physical channel resources.
According to an aspect of the present invention, provide a kind of code modulation system.
Code modulation system according to the present invention comprises: transceiver is used for determining the encoded packets length of spectrum efficiency and transmission according to its channel quality that obtains, or further the encoded packets length of spectrum efficiency and transmission is notified to other transceivers; Other transceivers are used for according to transceiver the spectrum efficiency of its notice and the encoded packets length of transmission being determined modulation system, spendable physical channel resources and encoder bit rate.
Wherein, other transceivers are according to determining modulation system, spendable physical channel resources and encoder bit rate from the spectrum efficiency of transceiver and encoded packets length and the predetermined information table of transmission.
In addition, transceiver also is used for sending data to other transceivers, or receiving the data from other transceivers according to the modulation system of determining, definite spendable physical channel resources, definite encoder bit rate.
Preferably, transceiver also is used for determining modulation system, spendable physical channel resources and encoder bit rate according to the encoded packets length of spectrum efficiency and transmission by the mode of tabling look-up.
By above-mentioned at least one technical scheme of the present invention, the present invention is by reasonably selecting spectrum efficiency and transmission block size to determine modulation system and encoder bit rate, and carry out data transfer by modulation system and the encoder bit rate of determining, can effectively utilize physical channel resources, save signaling consumption.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the AMC process of correlation technique;
Fig. 2 is the flow chart according to the code modulating method of the inventive method embodiment one;
Fig. 3 is the flow chart according to the code modulating method of the inventive method embodiment two;
Fig. 4 is the structural framing figure of the code modulation system of system according to the invention embodiment.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing.
Embodiment of the method one
According to the embodiment of the invention, provide a kind of code modulating method.
Fig. 2 is the flow chart according to the code modulating method of the embodiment of the invention, and as shown in Figure 2, the method may further comprise the steps:
Step S202, transceiver determine the encoded packets length of spectrum efficiency and transmission according to its channel quality that obtains;
Step S204, above-mentioned transceiver is determined modulation system according to spectrum efficiency, encoded packets length according to spectrum efficiency and transmission is determined spendable physical channel resources, and determine encoder bit rate according to the encoded packets length of transmission, definite modulation system and definite spendable physical channel resources, transceiver sends data to other transceivers, or receives the data from other transceivers according to the modulation system of determining, definite spendable physical channel resources, definite encoder bit rate.
The technical scheme that provides by the embodiment of the invention, the present invention is by reasonably selecting spectrum efficiency and transmission block size to determine modulation system and encoder bit rate, and carry out data transfer by modulation system and the encoder bit rate of determining, can effectively utilize physical channel resources, save signaling consumption.
Wherein, in step S204, transceiver determines that according to spectrum efficiency modulation system specifically comprises: transceiver can be divided into three sections with the span of described spectrum efficiency according to predetermined segmented node, wherein, and when 0＜MPR＜a, the modulation system that adopts is the QPSK modulation of order of modulation MOD=2, when a≤MPR＜b, the modulation system of employing is the 16QAM modulation of order of modulation MOD=4, when b≤MPR＜c, the modulation system that adopts is the 64QAM modulation of order of modulation MOD=6, wherein, MPR represents described spectrum efficiency, a, b, c is described segmented node, a, b, the c value is arithmetic number, and a＜b＜c.
For example, can make when 0＜MPR＜1.5, the modulation system that adopts is the QPSK modulation of order of modulation MOD=2, when 1.5≤MPR＜3.0, the modulation system that adopts is the 16QAM modulation of order of modulation MOD=4, and when 3.0≤MPR＜5.6, the modulation system of employing is the 64QAM modulation of order of modulation MOD=6, wherein, MPR represents spectrum efficiency.
Wherein, in step S204, determine that according to the encoded packets length of spectrum efficiency and transmission spendable physical channel resources specifically comprises: N=ceil (N
EP/ (N
Data* MPR)), wherein, N represents spendable physical channel resources, and ceil represents to round up, N
EPThe encoded packets length of expression transmission, N
DataExpression data symbol number, MPR represents spectrum efficiency.
Wherein, in step S204, determine that according to the encoded packets length of transmission, definite modulation system and definite spendable physical channel resources encoder bit rate specifically comprises: Rate=N
EP/ (N
Data* N*MOD), wherein, Rate presentation code code check, N
EPThe encoded packets length of expression transmission, N represents that the spendable physical channel resources determined, MOD represent the modulation system of determining.
The below is elaborated to the code modulating method according to the inventive method embodiment, and this example is with the follow-up evolution version of Wimax, and namely the standard of IEEE 802.16m is that example describes:
In IEEE 802.16m standard, physical source distributing is to be unit with Resource Unit (Resource Unit is referred to as RU), and wherein, a RU is by the P on the frequency domain
ScN on individual subcarrier and the time domain
SymIndividual OFDM symbol forms, and establishing the data symbol number that can carry among the RU is N
Data
The base station (namely, transceiver mentioned above) to mobile phone (namely, other transceivers mentioned above) send the signal that is used for channel measurement, mobile phone is according to the channel quality of the intensity measuring and calculating current time down link that receives signal, and channel-quality feedback that will this current moment down link is to the base station;
After the base station receives feedback information, determine the Target MPR of current time and the media access control of this transmission (Media Access Control, MAC) layer protocol data cell (Protocol Data Units, PDU) size, and utilize Target MPR and PDU to determine MOD (modulation system), N
RU(physical channel resources), Rate (encoder bit rate) for example, can utilize following method to determine MOD, N
RU, Rate value:
When 0＜MPR＜1.5, adopt the QPSK modulation of order of modulation MOD=2; When 1.5≤MPR＜3.0, adopt the 16QAM modulation of order of modulation MOD=4; When 3.0≤MPR＜5.6, adopt the 64QAM modulation of order of modulation MOD=6, and count N according to the definite RU of this MPR value
RU=ceil (N
EP/ (N
Data* MPR)), wherein ceil represents to round up; Encoder bit rate Rate=N
EP/ (N
Data* N
RU* MOD), the base station is according to the MOD, the N that determine
RU, Rate sends data to mobile phone.
The base station receives mobile phone behind feedback information, determine target MPR (TargetMPR) and this transmission PDU of current time, for example, current MPR is that 1.92, PDU size is 2800 bits, the base station tables look-up 1 according to the size of MPR and MAC PDU, the corresponding index value of this MPR is 8, can be expressed as 1000 with binary system, and the corresponding index of this PDU is 7, be shown 0111 with binary form, and determine MOD, N by this MPR and PDU
RU, Rate; The base station can send to mobile phone by signaling with MPR and index corresponding to PDU, and according to the MOD, the N that determine
RU, Rate sends data to mobile phone; After mobile phone received the signaling (index of MPR and coded block size) of sending the base station, tabling look-up obtained PDU size and MPR value, and determines MOD, N according to this MPR value
RU, Rate, and according to the MOD, the N that determine
RU, Rate receives the data that send the base station.
The below is elaborated to the code modulating method according to the inventive method embodiment, and this example adopts in the downlink transfer of Wimax system the embodiment of the invention to describe as example:
The distribution of physical resource is to be unit with subchannel (Sub-channel, be called for short SCH) in the Wimax system, can carry 48 data symbols among the SCH.
The base station sends a signal that is used for channel measurement to mobile phone, and mobile phone is calculated the channel quality of current time down link according to the intensity that receives signal, and feeds back to the base station;
After the base station receives feedback information, determine the size of the mac-layer protocol PDU of the Target MPR of current time and this transmission, and utilize Target MPR and PDU to determine MOD (modulation system), N
SCH(number of subchannels), Rate (encoder bit rate) for example, can utilize following method to determine MOD, N
SCH, Rate value:
When 0＜MPR＜1.5, adopt the QPSK modulation of order of modulation MOD=2; When 1.5≤MPR＜3.0, adopt the 16QAM modulation of order of modulation MOD=4; When 3.0≤MPR＜5.6, adopt the 64QAM modulation of order of modulation MOD=6, and according to the definite number of subchannels N of this MPR value
SCH=ceil (N
EP/ (48*MPR)), wherein ceil represents to round up; Encoder bit rate Rate=N
EP/ (48*N
SCH* MOD), the base station is according to the MOD, the N that determine
SCH, Rate sends data to mobile phone.
The base station receives mobile phone behind feedback information, determine Target MPR and this transmission PDU of current time, for example, current MPR is that 1.92, PDU size is 2800 bits, the base station tables look-up 1 according to the size of MPR and MAC PDU, the corresponding index value of this MPR is 8, can be expressed as 1000 with binary system, and the corresponding index of this PDU is 7, be shown 0111 with binary form, and determine MOD, N by this MPR and PDU
SCH, Rate; The base station can send to mobile phone by signaling with MPR and index corresponding to PDU, and according to the MOD, the N that determine
SCH, Rate sends data to mobile phone; After mobile phone received the signaling (index of MPR and coded block size) of sending the base station, tabling look-up obtained PDU size and MPR value, and determines MOD, N according to this MPR value
SCH, Rate, and according to the MOD, the N that determine
SCH, Rate receives the data that send the base station.
Equally, also can adopt code modulating method of the present invention in 3GPP LTE system, difference is that channel resource is take PRB as unit among the LTE, the number P RBS=ceil of PRB (TBS/ (N
Symbol* MPR)), N wherein
SymbolRepresent to be used among each PRB RE (Resource Element) number of bearing data service.
Need to prove; the embodiment of the invention take transceiver as the base station, other transceivers describe as the downlink transfer of terminal equipment as example; but be not limited to this; transceiver is that base station, other transceivers are that the uplink of terminal equipment is subject to protection of the present invention equally; its specific implementation process and the embodiment of the invention are identical, repeat no more here.
Embodiment of the method two
According to the embodiment of the invention, provide a kind of code modulating method.
Fig. 3 is the flow chart according to the code modulating method of the embodiment of the invention, and as shown in Figure 3, the method may further comprise the steps:
Step S302, transceiver is determined the encoded packets length of spectrum efficiency and transmission according to its channel quality information that obtains, and notifies to other transceivers;
Step S304, above-mentioned other transceivers are determined modulation system according to spectrum efficiency, encoded packets length according to spectrum efficiency and transmission is determined spendable physical channel resources, and determines encoder bit rate according to the encoded packets length of transmission, definite modulation system and definite spendable physical channel resources.
The technical scheme that provides by the embodiment of the invention, the present invention is by reasonably selecting spectrum efficiency and transmission block size to determine modulation system and encoder bit rate, and carry out data transfer by modulation system and the encoder bit rate of determining, can effectively utilize physical channel resources, save signaling consumption.
System embodiment
Fig. 4 shows the structural framing figure according to the code modulation system of the embodiment of the invention, and as shown in Figure 4, this system comprises:
Transceiver 10 is used for determining the encoded packets length of spectrum efficiency and transmission according to its channel quality that obtains, or further the encoded packets length of spectrum efficiency and transmission is notified to other transceivers;
Other transceivers 20 are used for according to transceiver the spectrum efficiency of its notice and the encoded packets length of transmission being determined modulation system, spendable physical channel resources and encoder bit rate.
Wherein, transceiver 10 can also be used for sending data according to the modulation system of determining, definite spendable physical channel resources, definite encoder bit rate to other transceivers, or reception is from the data of other transceivers, and transceiver 10 can also be used for determining modulation system, spendable physical channel resources and encoder bit rate according to the encoded packets length of spectrum efficiency and transmission by the mode of tabling look-up.
In addition, other transceivers 20 are according to determining modulation system, spendable physical channel resources and encoder bit rate from the spectrum efficiency of transceiver and encoded packets length and the predetermined information table of transmission.
Need to prove that transceiver 10 can be the base station, other transceivers 20 can be terminal; Perhaps, transceiver 10 is terminal, and other transceivers 20 are the base station.
The code modulation system that provides by the embodiment of the invention, the present invention is by reasonably selecting spectrum efficiency and transmission block size to determine modulation system and encoder bit rate, and carry out data transfer by modulation system and the encoder bit rate of determining, can effectively utilize physical channel resources, save signaling consumption.
As mentioned above, by means of code modulating method provided by the invention and/or system, the present invention is by reasonably selecting spectrum efficiency and transmission block size to determine modulation system and encoder bit rate, and carry out data transfer by modulation system and the encoder bit rate of determining, can effectively utilize physical channel resources, save signaling consumption.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a code modulating method is characterized in that, comprising:
Transceiver is determined the encoded packets length of spectrum efficiency and transmission according to its channel quality information that obtains;
Described transceiver is determined modulation system according to described spectrum efficiency, encoded packets length according to described spectrum efficiency and described transmission is determined spendable physical channel resources, and determines encoder bit rate according to the encoded packets length of described transmission, described definite modulation system and described definite spendable physical channel resources.
2. method according to claim 1 is characterized in that, described transceiver determines that according to described spectrum efficiency modulation system specifically comprises:
The segmented node that described transceiver basis is scheduled to is divided into three sections with the span of described spectrum efficiency, wherein, when 0＜MPR＜a, the modulation system that adopts is the QPSK modulation of order of modulation MOD=2, when a≤MPR＜b, the modulation system of employing is the 16QAM modulation of order of modulation MOD=4, when b≤MPR＜c, the modulation system that adopts is the 64QAM modulation of order of modulation MOD=6, wherein, MPR represents described spectrum efficiency, a, b, c is described segmented node, a, b, the c value is arithmetic number, and a＜b＜c.
3. method according to claim 2 is characterized in that, described encoded packets length according to described spectrum efficiency and described transmission determines that spendable physical channel resources specifically comprises:
Encoded packets length to data symbolic number, described spectrum efficiency, described transmission rounds, and determines described spendable physical channel resources.
4. method according to claim 3, determine described physical channel resources according to following formula:
N=ceil (N
EP/ (N
Data* MPR)), wherein, N represents described spendable physical channel resources, and ceil represents to round up, N
EPThe encoded packets length that represents described transmission, N
DataRepresent described data symbol number, MPR represents described spectrum efficiency.
5. method according to claim 3 is characterized in that, described encoded packets length according to described transmission, described definite modulation system and described definite spendable physical channel resources determine that encoder bit rate specifically comprises:
Described encoder bit rate is by formula Rate=N
EP/ (N
Data* N*MOD) determine, wherein, Rate presentation code code check, N
EPThe encoded packets length that represents described transmission, N
DataRepresent described data symbol number, N represents described definite spendable physical channel resources, and MOD represents described definite modulation system.
6. each described method in 4 according to claim 1 is characterized in that, further comprises:
Described transceiver sends data according to described definite modulation system, described definite spendable physical channel resources, described definite encoder bit rate to other transceivers, or receives the data from other transceivers.
7. a code modulating method is characterized in that, comprising:
Transceiver is determined the encoded packets length of spectrum efficiency and transmission according to its channel quality information that obtains, and notifies to other transceivers;
Described other transceivers are determined modulation system according to described spectrum efficiency, encoded packets length according to described spectrum efficiency and described transmission is determined spendable physical channel resources, and determines encoder bit rate according to the encoded packets length of described transmission, described definite modulation system and described definite spendable physical channel resources.
8. a code modulation system is characterized in that, comprising:
Transceiver is used for determining the encoded packets length of spectrum efficiency and transmission according to its channel quality that obtains, or further the encoded packets length of described spectrum efficiency and transmission is notified to other transceivers;
Described other transceivers are used for according to described transceiver the described spectrum efficiency of its notice and the encoded packets length of transmission being determined modulation system, spendable physical channel resources and encoder bit rate.
9. system according to claim 8, it is characterized in that described other transceivers are used for according to determining described modulation system, described spendable physical channel resources and described encoder bit rate from the described spectrum efficiency of described transceiver and encoded packets length and the predetermined information table of described transmission.
10. system according to claim 8, it is characterized in that, described transceiver also is used for sending data according to described definite modulation system, described definite spendable physical channel resources, described definite encoder bit rate to described other transceivers, or receives the data from described other transceivers.
11. each described system in 10 according to claim 8, it is characterized in that described transceiver also is used for determining modulation system, spendable physical channel resources and encoder bit rate according to the encoded packets length of described spectrum efficiency and transmission by the mode of tabling look-up.
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| CN106792904A (en) * | 2016-11-23 | 2017-05-31 | 中国联合网络通信集团有限公司 | The transmission method of small bag data and base station |
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| CN102244628B (en) * | 2010-05-12 | 2014-11-05 | 中兴通讯股份有限公司 | Method and device for realizing service data transmission |
| CN102447522B (en) * | 2010-09-30 | 2016-03-23 | 上海贝尔股份有限公司 | The method and apparatus of multilayer transmission |
| EP3461042A4 (en) * | 2016-08-03 | 2019-08-07 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Data transmission method and device |
| WO2018053851A1 (en) * | 2016-09-26 | 2018-03-29 | Qualcomm Incorporated | Resource mapping based on spectral efficiency |
| CN108023676B (en) * | 2016-11-04 | 2022-11-22 | 中兴通讯股份有限公司 | Modulation mode control method, device and base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101030833A (en) * | 2006-03-01 | 2007-09-05 | 株式会社Ntt都科摩 | Adaptable space-time coding and modulation method and transmitter |
| CN101167289A (en) * | 2005-04-26 | 2008-04-23 | 松下电器产业株式会社 | Transmitting apparatus, receiving apparatus, and link adaptation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101167289A (en) * | 2005-04-26 | 2008-04-23 | 松下电器产业株式会社 | Transmitting apparatus, receiving apparatus, and link adaptation method |
| CN101030833A (en) * | 2006-03-01 | 2007-09-05 | 株式会社Ntt都科摩 | Adaptable space-time coding and modulation method and transmitter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792904A (en) * | 2016-11-23 | 2017-05-31 | 中国联合网络通信集团有限公司 | The transmission method of small bag data and base station |
| CN106792904B (en) * | 2016-11-23 | 2020-05-12 | 中国联合网络通信集团有限公司 | Small packet data transmission method and base station |
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