WO2017024431A1 - 传输数据的方法和设备 - Google Patents
传输数据的方法和设备 Download PDFInfo
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- WO2017024431A1 WO2017024431A1 PCT/CN2015/086327 CN2015086327W WO2017024431A1 WO 2017024431 A1 WO2017024431 A1 WO 2017024431A1 CN 2015086327 W CN2015086327 W CN 2015086327W WO 2017024431 A1 WO2017024431 A1 WO 2017024431A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- Embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and an apparatus for transmitting data.
- Wi-Fi Wireless Fidelity
- the 802.11 standard after 802.11a, 802.11b, 802.11g, 802.11n and 802.11ac and other versions, the technology is more and more mature, and the system transmission speed is also increasing.
- 802.11ac is running in the 5GHz band. The maximum can already support 1.3Gbps.
- 802.11ad is a branch of IEEE 802.11 (or WLAN, WLAN) system. It works in the 60 GHz high frequency band and is mainly used to realize wireless high-definition audio and video signals transmission in the home, bringing more complete HD to home multimedia applications.
- the video solution also known as WiGig (60GHz Wi-Fi).
- WiGig 60GHz Wi-Fi
- 802.11ad technology has high capacity and high rate in multimedia applications (the highest transmission rate can reach 7Gbps when PHY adopts OFDM multi-carrier scheme, and the maximum transmission rate can reach 4.6Gbps when single-carrier modulation scheme is used), Low latency, low power consumption and more.
- the IEEE 802.11 standards organization created the new Next Generation 60GHz Study Group (NG60SG) in May 2014, and the first formal meeting of the NG60SG in September 2014, plans to develop the NG60 standard as the next generation evolution technology for 802.11ad 60GHz WLAN. Its main goal is to increase the peak rate from 7Gbps to more than 20Gbps. In addition, it also hopes to expand the application range. In addition to continuing to support 802.11ad point-to-point close-range wireless high-definition audio and video signals, it also introduces wireless access, backhaul, and point. To a variety of scenarios.
- the peak rate in the existing 802.11ad is at most 7 Gbps, and in the next generation 802.11ad can also be called NG60, which is required to be raised to more than 20 Gbps. Therefore, in the NG60 standard protocol, how to increase the data transmission rate has become an urgent problem to be solved.
- Embodiments of the present invention provide a method and device for transmitting data, which can improve data transmission rate.
- a method for data transmission over a wireless local area network comprising:
- Generating a first channel estimation CE sequence where the first CE sequence includes M groups of second CE sequences, the second CE sequence is transformed by a third CE sequence, the third CE sequence satisfies an 802.11ad standard, and the third CE sequence includes : [-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128] or [-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128Gb128-Ga128-Gb128], wherein M is a positive integer greater than or equal to 2;
- a physical layer protocol data unit (PPDU) to the receiving device, where the PPDU includes the first CE sequence, wherein a channel bandwidth carrying the PPDU is a sum of M consecutive frequency bands, and the M group second CE sequence is consecutive to the M
- the frequency bands correspond one-to-one.
- the generating the first channel estimation CE sequence comprises:
- the first CE sequence is generated according to the M group second CE sequence.
- the generating the first CE sequence according to the M group second CE sequence includes:
- the M group second CE sequence is arranged in an interleaved manner to generate the first CE sequence.
- the generating the first CE sequence according to the M group second CE sequence includes:
- the M group second CE sequence is arranged in series to generate the first CE sequence.
- the determining the M group second according to the third CE sequence and the phase shift signal sequence includes determining the second CE sequence of the M group according to the following formula:
- N 1 is a preset optimization value, 0 ⁇ N 1 ⁇ N, where N represents the total number of characters in the third CE sequence;
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal. Delay.
- the M group second CE sequence is arranged in an interleaving manner to generate the first CE sequence, including generating the first CE sequence according to the following formula :
- n' nM+m-1
- 0 ⁇ n' ⁇ NM 0 ⁇ n ⁇ N
- n' denotes the label of the character in the first CE sequence
- p(n') denotes the first CE sequence
- the M-group second CE sequence is arranged in a series manner to generate the first CE sequence, and the first CE sequence is generated according to the following formula:
- n' denotes the label of the character in the first CE sequence
- n' (m-1)M+n, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N
- p(n') denotes the first CE sequence
- the generating the first channel estimation CE sequence comprises:
- the generating the first CE sequence of each antenna in the multiple antenna according to the third CE sequence and the phase shift signal sequence includes:
- the first CE sequence of each antenna is generated by cyclic shift.
- the number of the multiple antennas is K
- M represents the number of the mth second CE sequence in the second CE sequence of the M group
- N represents the number of the second CE sequence
- N 1 is a preset optimized value. , 0 ⁇ N 1 ⁇ N
- n 0, ..., N-1, indicating the label of the character in the third CE sequence
- p 0 (n) indicates the third CE sequence
- p m (n) indicates the M group
- the mth second CE sequence in the second CE sequence, And representing the phase shift signal sequence corresponding to the mth second CE sequence, wherein when m m 1 or m 2 , ⁇ m is determined by the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the M group second CE sequence is arranged in an interleaved manner to generate an initial CE sequence of each antenna, including determining the initial CE sequence according to the following formula:
- n' 0 nM + m-1, 0 ⁇ n' 0 ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Representing the initial CE sequence,
- n represents the label of the character in the first CE sequence of each antenna
- p k (n) represents the first CE sequence of the kth antenna of the K antennas, 1 ⁇ k ⁇ K
- c ⁇ (y) is based on the initial CE sequence
- c ⁇ k (z) represents the base sequence of the kth antenna of the K antennas.
- Generating the first CE sequence of each antenna of the multiple antennas according to the third CE sequence and the phase shift signal sequence including:
- the M sets of second CE sequences are arranged in an interleaved manner to generate the first CE sequence of each antenna.
- the number of the multiple antennas is K
- the initial CE sequence of each antenna is generated by cyclic shifting, including determining an initial CE sequence of each antenna according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the M-group second CE sequence is arranged in an interleaving manner to generate the first CE sequence of each antenna, including determining the first CE sequence of each antenna according to the following formula:
- the generating the first CE sequence of each antenna in the multiple antenna according to the third CE sequence and the phase shift signal sequence includes:
- the first CE sequence of each antenna is generated according to the initial CE sequence and a preset coefficient.
- the number of the multiple antennas is K
- M represents the number of the mth second CE sequence in the second CE sequence of the M group
- N represents the number of the second CE sequence
- p 0 (n) represents the third CE sequence
- p m (n) represents the mth second CE sequence in the M group second CE sequence
- N 1 is The preset optimization value, 0 ⁇ N 1 ⁇ N
- And representing the phase shift signal sequence corresponding to the mth second CE sequence, wherein when m m 1 or m 2 , ⁇ m is determined by the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the M-group second CE sequence is arranged in series to generate an initial CE sequence for each antenna of the antenna, including determining the initial CE sequence according to the following formula:
- n' 0 (m - 1) M + n ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Representing the initial CE sequence;
- F(k,m) represents the preset coefficient
- n′′ (m ⁇ 1)M+n, 0 ⁇ n′′ ⁇ N*M
- n′′ represents the character in the first CE sequence of each antenna
- the label, 1 ⁇ k ⁇ K, p k (n") represents the first CE sequence of the kth antenna of the K antennas.
- the preset coefficients are:
- an apparatus for data transmission of a wireless local area network including:
- a generating unit configured to generate a first channel estimation CE sequence, where the first CE sequence includes M groups of second CE sequences, where the second CE sequence is transformed by a third CE sequence, where the third CE sequence satisfies the 802.11ad standard,
- the third CE sequence includes: [-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128-Ga128-Gb128] or [-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128-Gb128], where M is a positive integer greater than or equal to 2. ;
- a sending unit configured to send a physical layer protocol data unit PPDU to the receiving end device, where the PPDU includes the first CE sequence, where a channel bandwidth carrying the PPDU is a sum of bandwidths of M consecutive frequency bands, and the M group second CE sequence One-to-one correspondence with the M consecutive frequency bands.
- the generating unit determines the M group second CE sequence according to the third CE sequence and the phase shift signal sequence
- the first CE sequence is generated according to the M group second CE sequence.
- the generating unit arranges the M group second CE sequence by using an interlace manner to generate the first CE sequence.
- the generating unit is configured to perform the first CE sequence by arranging the M groups of second CE sequences in a series manner.
- the generating unit determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal. Delay.
- the generating unit generates the first CE sequence according to the following formula:
- n' nM+m-1
- 0 ⁇ n' ⁇ NM 0 ⁇ n ⁇ N
- n' denotes the label of the character in the first CE sequence
- p(n') denotes the first CE sequence
- the generating unit generates the first CE sequence according to the following formula:
- n' denotes the label of the character in the first CE sequence
- n' (m-1)M+n, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N
- p(n') denotes the first CE sequence
- the generating unit generates the first CE sequence of each antenna of the multiple antennas according to the third CE sequence and the phase shift signal sequence.
- the generating unit determines, according to the third CE sequence and the phase shift signal sequence, the M group second CE of each antenna sequence,
- the first CE sequence of each antenna is generated by cyclic shift.
- the number of the multiple antennas is K
- the generating unit determines the M group second CE sequence according to the following formula:
- M represents the number of the mth second CE sequence in the second CE sequence of the M group
- N represents the number of the second CE sequence
- N 1 is a preset optimized value. , 0 ⁇ N 1 ⁇ N
- n 0, ..., N-1, indicating the label of the character in the third CE sequence
- p 0 (n) represents the third CE sequence
- p m (n) represents the M group
- the mth second CE sequence in the second CE sequence, And representing the phase shift signal sequence corresponding to the mth second CE sequence, wherein when m m 1 or m 2 , ⁇ m is determined by the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the generating unit determines the initial CE sequence according to the following formula:
- n' 0 nM + m-1, 0 ⁇ n' 0 ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Representing the initial CE sequence,
- the generating unit determines the first CE sequence of each antenna according to the following formula:
- n represents the label of the character in the CE sequence of each antenna
- p k (n′′) represents the first CE sequence of the kth antenna among the K antennas, 1 ⁇ k ⁇ K
- c ⁇ (y) is based on the initial CE sequence
- c ⁇ k (z) represents the base sequence of the kth antenna of the K antennas.
- the M sets of second CE sequences are arranged in an interleaved manner to generate the first CE sequence of each antenna.
- the number of the multiple antennas is K
- the generating unit determines the initial CE sequence of each antenna according to the following formula:
- the generating unit generates the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the generating unit determines the first CE sequence of each antenna according to the following formula:
- the generating unit determines, according to the third CE sequence and the phase shift signal sequence, the M group second CE of each antenna sequence,
- the CE sequence of each antenna is generated according to the initial CE sequence and the preset coefficients.
- the number of the multiple antennas is K
- the generating unit determines the M group second CE sequence according to the following formula:
- M represents the number of the mth second CE sequence in the second CE sequence of the M group
- N represents the number of the second CE sequence
- p 0 (n) represents the third CE sequence
- p m (n) represents the mth second CE sequence in the M group second CE sequence
- N 1 is The preset optimization value, 0 ⁇ N 1 ⁇ N
- And representing the phase shift signal sequence corresponding to the mth second CE sequence, wherein when m m 1 or m 2 , ⁇ m is determined by the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the generating unit determines the initial CE sequence according to the following formula:
- n' 0 (m - 1) M + n ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Representing the initial CE sequence;
- the generating unit determines the first CE sequence according to the following formula:
- F(k,m) represents the preset coefficient
- 0 ⁇ n" (m-1)M+n ⁇ N*M
- n" represents the label of the character in the first CE sequence of each antenna
- p k (n") represents the first CE sequence of the kth antenna of the K antennas.
- the preset coefficients are:
- the embodiment of the present invention can improve the data transmission rate by generating a first CE sequence supporting multiple channels, thereby enabling the transceiver to support data transmission and reception of multiple channels at the same time.
- FIG. 1 is a schematic diagram of a scenario for transmitting data applicable to an embodiment of the present invention.
- FIG. 2 is a schematic flow chart of a method of transmitting data according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a CE sequence in a conventional 802.11ad.
- FIG. 4 is a schematic diagram of a CE sequence in a conventional 802.11ad.
- FIG. 5 is a schematic diagram showing the structure of a first CE according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of a first CE structure according to another embodiment of the present invention.
- FIG. 7 is a schematic diagram of a first CE structure according to another embodiment of the present invention.
- Figure 8 is a schematic block diagram of an apparatus for data transmission in accordance with one embodiment of the present invention.
- FIG. 9 is a schematic block diagram of an apparatus for data transmission in accordance with another embodiment of the present invention.
- the technical solution of the present invention can be applied to an Orthogonal Frequency Division Multiplexing (OFDM) system, for example, a WLAN system, in particular, Wireless Fidelity (WiFi), etc.; Can be applied to single carrier (Single Carrier, SC) system.
- OFDM Orthogonal Frequency Division Multiplexing
- WLAN Wireless Fidelity
- SC Single Carrier
- the method of the embodiment of the present invention may also be applied to other types of OFDM systems, and the embodiments of the present invention are not limited herein.
- the sender device and the receiver device may be user stations (Stations, STAs) in the WLAN, and the user sites may also be referred to as systems, subscriber units, access terminals, mobile stations, mobile stations, remote stations, and remote terminals.
- a mobile device a user terminal, a terminal, a wireless communication device, a user agent, a user device, or a user equipment (User Equipment, UE).
- User Equipment User Equipment
- the STA may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a wireless local area network (A handheld device such as a Wi-Fi) communication function, a computing device, or other processing device connected to a wireless modem.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- a handheld device such as a Wi-Fi communication function
- computing device or other processing device connected to a wireless modem.
- the sending end device and the receiving end device may also be an access point (AP, Access Point) in the WLAN, and the access point may be used to communicate with the access terminal through the wireless local area network, and transmit the data of the access terminal to the network side. Or transmit data from the network side to the access terminal.
- AP Access Point
- the access point may be used to communicate with the access terminal through the wireless local area network, and transmit the data of the access terminal to the network side. Or transmit data from the network side to the access terminal.
- the receiving end device may be a communication peer corresponding to the sending end device.
- FIG. 1 is a schematic diagram of a scenario for transmitting data applicable to an embodiment of the present invention.
- the scenario system shown in FIG. 1 may be a WLAN system.
- the system of FIG. 1 includes one or more access points AP 101 and one or more site STAs 102.
- FIG. 1 exemplifies one access point and two sites.
- Wireless communication can be made between the access point 101 and the site 102 by various standards.
- the access point 101 and the site 102 can be wirelessly communicated by using a multi-user multiple-input multiple-output (MU-MIMO).
- MU-MIMO multi-user multiple-input multiple-output
- FIG. 2 is a schematic flow chart of a method of transmitting data according to an embodiment of the present invention.
- the method shown in Figure 2 is performed by the source device, and the sender device can be a site or an access point.
- the sender device is an access point
- the receiver device is a site; when the sender device is a site, the receiver device is For the access point.
- the method shown in FIG. 2 is applied to a wireless local area network WLAN in the 60 GHz band, including:
- first CE sequence includes M groups of second CE sequences
- the second CE sequence is transformed by a third CE sequence
- the third CE sequence satisfies the 802.11ad standard
- the third CE sequence includes: -Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128] or [-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128 -Ga128Gb128 -Ga128 -Gb128], where M is a positive integer greater than or equal to 2.
- the physical layer protocol data unit PPDU is sent to the receiving end device, where the PPDU includes a first CE sequence, where the channel bandwidth carrying the PPDU is the sum of the bandwidths of the M consecutive frequency bands, and the M group second CE sequence and the M consecutive frequency bands are one by one. correspond.
- the embodiment of the present invention can improve the data transmission rate by generating a first CE sequence supporting multiple consecutive frequency bands, thereby enabling the transceiver to support data transmission and reception on multiple consecutive frequency bands simultaneously.
- the M consecutive frequency bands may also be referred to as M consecutive subchannels, that is, the multiple CE sequences included in the first CE sequence in the embodiment of the present invention are respectively associated with multiple subchannels.
- M consecutive subchannels that is, the multiple CE sequences included in the first CE sequence in the embodiment of the present invention are respectively associated with multiple subchannels.
- the multi-channel in the embodiment of the present invention is relative to the existing 802.11ad, for example, the physical layer protocol data unit frame in the existing 802.11ad, that is, the physical layer convergence procedure (PLCP).
- the PLCP Protocol Data Unit (PPDU) occupies only one channel, for example, only one channel with a channel bandwidth of 2.16 GHz, and the PPDU in the embodiment of the present invention can occupy an existing multi-channel, for example, can occupy multiple channels.
- a channel having a bandwidth of 2.16 GHz for example, a channel occupying 2, 3 or 4 channels with a bandwidth of 2.16 GHz
- the channel bandwidth in the embodiment of the present invention may be the sum of the bandwidths of the occupied multiple channels, for example, the present invention
- the channel bandwidth in the embodiment may be 4.32GHZ, 6.48GHZ or 8.64GHZ. That is to say, in the embodiment of the present invention, the (one) channel carrying the PPDU in the embodiment of the present invention may be regarded as existing. The sum of multiple channels.
- the CE in 802.11ad supports only one channel of data transmission.
- the CE estimates the CE sequence by generating a channel supporting multiple channels, thereby enabling the transceiver to support data transmission and reception of multiple channels simultaneously. Increase the data transfer rate.
- the third CE sequence in the embodiment of the present invention may be, for example, a CE sequence in the existing 802.11ad.
- the third CE sequence may be a structure as shown in FIG. 3, where FIG. 3 is a schematic diagram of a structure of a CE transmitted by using a single carrier in the 802.11ad system.
- the third CE sequence shown in FIG. 3 includes Gu 512 , Gv 512 , and Gv 128 , where
- Gu 512 [-Gb 128 -Ga 128 Gb 128 -Ga 128 ]
- Gv 512 [-Gb 128 Ga 128 - Gb 128 - Ga 128 ]
- Gv 128 [-Gb 128 ]
- the third CE sequence may be a structure as shown in FIG. 4, wherein FIG. 4 is a schematic diagram of a configuration of a CE transmitted by using an OFDM method in the 802.11ad system.
- the third CE sequence as shown in FIG. 4 includes Gv 512 , Gu 512 , and Gv 128 .
- the third CE sequence in the embodiment of the present invention may also be a sequence corresponding to single carrier and multiple carrier (OFDM) obtained by multiplying the corresponding phase shift signal on the basis of the CE sequence in FIG. 3 and FIG. :
- OFDM single carrier and multiple carrier
- the third CE sequence in the embodiment of the present invention may be:
- n 0,1...1151
- n 0,1...1151
- rCE sc (n) is a single-carrier corresponding CE 802.11ad sequence (Pilot), CE sequence to that of the third embodiment of the present invention, rCE OFDM (n) is 802.11ad multicarrier (OFDM)
- the corresponding CE sequence (pilot) may be the third CE sequence in the embodiment of the present invention, and n represents the label of the character in the third CE sequence.
- the foregoing third CE sequence is only exemplified by the CE sequence in the existing 802.11ad, and the third CE sequence in the embodiment of the present invention may also be in the form thereof, as long as the above-mentioned nine Gray sequences are included. That is, the order of the nine Gray sequences is not limited in the embodiment of the present invention.
- the number of the third CE sequence in the embodiment of the present invention is not limited to 1152. That is to say, the third CE sequence in the embodiment of the present invention may further include other Gray sequence, which is not limited by the embodiment of the present invention.
- the embodiment of the present invention can be applied to a scenario using a single antenna and multiple channels, and can also be applied to a scenario of multiple antennas and multiple channels.
- the following is a detailed description of the scenarios applicable to the embodiments of the present invention.
- a first CE sequence is generated based on the M group second CE sequence.
- Determining the M group second CE sequence according to the third CE sequence and the phase shift signal sequence including The following formula determines the second CE sequence of the M group:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal. Delay.
- N when the third CE sequence is the CE sequence in the above existing 802.11ad, N may be 1152, the value of M may be any integer of [1, 4], and N 1 may be 1024.
- the CE sequence may be generated according to the M group second CE sequence in multiple manners, which is exemplified in the following.
- the first manner generating the first CE sequence according to the M group second CE sequence, including:
- the M sets of second CE sequences are arranged in an interleaved manner to generate a first CE sequence.
- the second manner generating the first CE sequence according to the M group second CE sequence, including:
- the first CE sequence is generated according to the M group second CE sequence arranged in series.
- the M group second CE sequence is arranged in an interleaved manner to generate a first CE sequence, including generating a first CE sequence according to the following formula:
- n' nM+m-1, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N, n' denotes a label of a character in the first CE sequence, and p(n') denotes a first CE sequence.
- FIG. 5 is a schematic diagram of a first CE structure in accordance with one embodiment of the present invention.
- the arrows of the same thickness represent a set of second CE sequences.
- the first CE sequence in FIG. 5 is composed of four sets of second CE sequences arranged in an interlace.
- the M group second CE sequence is arranged in a series manner to generate a first CE sequence, including generating a CE sequence according to the following formula:
- n' denotes the label of the character in the first CE sequence
- n' (m-1)M+n, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N
- p(n') represents the first CE sequence
- FIG. 6 is a schematic structural view of a first CE according to another embodiment of the present invention.
- the arrows of the same thickness represent a set of second CE sequences.
- the first CE sequence in FIG. 6 is composed of four sets of second CE sequences arranged in series.
- a first CE sequence for each of the plurality of antennas is generated based on the third CE sequence and the phase shifted signal sequence.
- the CE sequence of each antenna in the multiple antennas may be generated according to the third CE sequence and the phase-shifted signal sequence in multiple manners, which will be described below by way of example.
- the CE sequence of each antenna in the multiple antennas is generated according to the third CE sequence and the phase-shifted signal sequence, including:
- a first CE sequence of each antenna is generated in a cyclic shift manner.
- the number of multiple antennas is K,
- Determining M sets of second CE sequences for each antenna based on the third CE sequence and the phase shifted signal sequence including determining the M sets of second CE sequences according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the M sets of second CE sequences are arranged in an interleaved manner to generate an initial CE sequence for each antenna, including determining an initial CE sequence according to the following formula:
- n' 0 nM + m-1, 0 ⁇ n' 0 ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Indicates the initial CE sequence,
- the CE sequence of each antenna is generated by cyclic shift, including determining the CE sequence of each antenna according to the following formula:
- n represents the label of the character in the CE sequence of each antenna
- p k (n′′) represents the CE sequence of the kth antenna among the K antennas, 1 ⁇ k ⁇ K
- c ⁇ (y) is based on the initial CE sequence
- c ⁇ k (z) represents the base sequence of the kth antenna of the K antennas.
- the base sequence of the first antenna is shown in Table 1.
- each small cell in the table represents 128*M data.
- the base sequence of the second antenna is obtained by shifting based on the first antenna.
- the base sequence of the second antenna is as shown in Table 2.
- the base sequence of the third to eighth antennas can be obtained by the above-described shifting method.
- generating a first CE sequence of each antenna in the multiple antennas according to the third CE sequence includes:
- the M sets of second CE sequences are arranged in an interleaved manner to generate a first CE sequence for each antenna.
- the number of multiple antennas is K,
- an initial CE sequence of each antenna is generated by cyclic shifting, including determining an initial CE sequence of each antenna according to the following formula:
- Generating a second set of M CE sequences for each antenna based on the initial CE sequence and the phase shifted signal including generating M sets of second CE sequences according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the M sets of second CE sequences are arranged in an interleaved manner to generate a CE sequence for each antenna, including determining a first CE sequence for each antenna according to the following formula:
- n′′ nM+m-1 ⁇ N*M
- n′′ denotes the label of the character in the CE sequence of each antenna, 1 ⁇ k ⁇ K
- the number of the mth second CE sequence in the two CE sequences, p k (n") represents the first CE sequence of the kth antenna of the K antennas.
- generating a first CE sequence of each antenna in the multiple antennas according to the third CE sequence and the phase shift signal sequence includes:
- a first CE sequence for each antenna is generated based on the initial CE sequence and the preset coefficients.
- the number of multiple antennas is K,
- Determining M sets of second CE sequences for each antenna based on the third CE sequence and the phase shifted signal sequence including determining the M sets of second CE sequences according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the M sets of the second CE sequence are arranged in series, and the initial CE sequence of each antenna of the antenna is generated, including determining the initial CE sequence according to the following formula:
- n' 0 (m-1)M+n ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Indicates the initial CE sequence;
- F(k,m) denotes a preset coefficient
- n′′ (m ⁇ 1)M+n, 0 ⁇ n′′ ⁇ N*M
- n′′ denotes the label of the character in the first CE sequence of each antenna, 1 ⁇ k ⁇ K, p k (n") represents the first CE sequence of the kth antenna among the K antennas.
- the preset coefficients are:
- N when the third CE sequence is the CE sequence in the above existing 802.11ad, N may be 1152, N 1 may be 1024, and the value of K may be any integer in [1, 8], and M is taken.
- the preset coefficient is The CE sequences of the first to fourth antennas are respectively shown in FIG.
- FIG. 1 to FIG. 7 are merely intended to assist those skilled in the art to understand the embodiments of the present invention, and the embodiments of the present invention are not limited to the specific numerical values or specific examples illustrated. A person skilled in the art will be able to make various modifications and changes in the embodiments according to the examples of FIG. 1 to FIG. 7 , and such modifications or variations are also within the scope of the embodiments of the present invention.
- the method for transmitting data in the embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 7.
- the device for transmitting data according to the embodiment of the present invention is described in detail below with reference to FIG. 8 and FIG.
- the device 800 shown in FIG. 8 may also be referred to as a sender device, and the sender device may be a site or an access point.
- the sender device is an access point
- the receiver device is a site; when the sender device is a site,
- the receiving device is an access point.
- the device 800 shown in FIG. 8 corresponds to the method shown in FIG. 1 and can implement various processes in the method embodiment of FIG. 1.
- the specific functions of the device 800 can be referred to the corresponding description in FIG. The detailed description is omitted as appropriate.
- the device 800 shown in FIG. 8 includes a generating unit 810 and a transmitting unit 820.
- the generating unit 810 is configured to generate a first channel estimation CE sequence, where the first CE sequence includes M groups of second CE sequences, the second CE sequence is transformed by a third CE sequence, and the third CE sequence satisfies the 802.11ad standard, and the third CE sequence Including: [-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128] or [-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128-Gb128], wherein M is a positive integer greater than or equal to 2;
- the sending unit 820 is configured to send a physical layer protocol data unit PPDU to the receiving end device, where the PPDU includes a first CE sequence, where the channel bandwidth carrying the PPDU is the sum of the bandwidths of the M consecutive frequency bands, and the M group of the second CE sequence and the M consecutive The frequency bands correspond one-to-one. Therefore, the embodiment of the present invention can improve the data transmission rate by generating a first CE sequence supporting multiple consecutive frequency bands, thereby enabling the transceiver to support data transmission and reception on multiple consecutive frequency bands simultaneously.
- the generating unit 810 determines the M group second CE sequence according to the third CE sequence and the phase shift signal sequence;
- a first CE sequence is generated based on the M group second CE sequence.
- the generating unit 810 arranges the M groups of second CE sequences in an interleaved manner to generate a first CE sequence.
- the generating unit 810 generates a CE sequence according to the M group second CE sequence by serially arranged.
- the generating unit 810 determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal. Delay.
- the generating unit 810 generates a first CE sequence according to the following formula:
- n' nM+m-1, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N, n' denotes a label of a character in the first CE sequence, and p(n') denotes a first CE sequence.
- the generating unit 810 generates a CE sequence according to the following formula:
- n' denotes the label of the character in the first CE sequence
- n' (m-1)M+n, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N
- p(n') represents the first CE sequence
- the generating unit 810 generates a first CE sequence of each of the plurality of antennas according to the third CE sequence and the phase shift signal sequence.
- the generating unit 810 determines the M group second CE sequence of each antenna according to the third CE sequence and the phase shift signal sequence,
- a first CE sequence of each antenna is generated in a cyclic shift manner.
- the number of multiple antennas is K,
- the generating unit 810 determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the generating unit 810 determines an initial CE sequence according to the following formula:
- n' nM+m-1, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N, n' denotes a label of a character in the first CE sequence, and p(n') denotes a first CE sequence.
- the generating unit 810 determines each antenna according to the following formula.
- First CE sequence :
- n represents the label of the character in the CE sequence of each antenna
- p k (n′′) represents the first CE sequence of the kth antenna among the K antennas, 1 ⁇ k ⁇ K
- c ⁇ (y) is based on the initial CE sequence
- c ⁇ k (z) represents the base sequence of the kth antenna of the K antennas.
- the generating unit 810 generates an initial CE sequence of each antenna by using a cyclic shift manner according to the third CE sequence;
- the M sets of second CE sequences are arranged in an interleaved manner to generate a first CE sequence for each antenna.
- the number of multiple antennas is K,
- the generating unit 810 determines an initial CE sequence for each antenna according to the following formula:
- the generating unit 810 generates M sets of second CE sequences according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the generating unit 810 determines the CE sequence of each antenna according to the following formula:
- n′′ nM+m-1 ⁇ N*M
- n′′ denotes the label of the character in the CE sequence of each antenna, 1 ⁇ k ⁇ K
- the number of the mth second CE sequence in the two CE sequences, p k (n") represents the first CE sequence of the kth antenna of the K antennas.
- the generating unit 810 determines, according to the third CE sequence and the phase shift signal sequence, the M group second CE sequence of each antenna,
- a first CE sequence for each antenna is generated based on the initial CE sequence and the preset coefficients.
- the number of multiple antennas is K,
- the generating unit 810 determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the delay, generating unit 810 determines the initial CE sequence according to the following formula:
- n' 0 (m-1)M+n ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Indicates the initial CE sequence;
- the generating unit 810 determines the CE sequence according to the following formula:
- the preset coefficients are:
- FIG. 9 is a schematic block diagram of an apparatus for data transmission of a wireless local area network according to another embodiment of the present invention.
- the device 900 shown in FIG. 9 may also be referred to as a sender device, and the sender device may be a site or an access point.
- the sender device is an access point
- the receiver device is a site; when the sender device is a site,
- the receiving device is an access point.
- the device 900 shown in FIG. 9 corresponds to the method shown in FIG. 1 and can implement various processes in the method embodiment of FIG. 1.
- the specific functions of the device 900 can be referred to the corresponding description in FIG. The detailed description is omitted as appropriate.
- the device 900 shown in FIG. 9 includes a processor 910, a memory 920, a bus system 930, and a transceiver 940.
- the processor 910 calls the code stored in the memory 920 by the bus system 930 to generate a first channel estimation CE sequence, the first CE sequence includes M sets of second CE sequences, and the second CE sequence is transformed by the third CE sequence.
- the third CE sequence satisfies the 802.11ad standard, and the third CE sequence includes: [-Gb128-Ga128 Gb128-Ga128-Gb128 Ga128-Gb128-Ga128-Gb128] or [-Gb128 Ga128-Gb128-Ga128-Gb128-Ga128 Gb128-Ga128 –Gb128], where M is a positive integer greater than or equal to 2;
- the transceiver 940 is configured to send a physical layer protocol data unit PPDU to the receiving end device, where the PPDU includes a first CE sequence, where the channel bandwidth carrying the PPDU is the sum of the bandwidths of the M consecutive frequency bands, and the M group second CE sequence and the M consecutive The frequency bands correspond one-to-one.
- the embodiment of the present invention can improve the data transmission rate by generating a first CE sequence supporting multiple consecutive frequency bands, thereby enabling the transceiver to support data transmission and reception on multiple consecutive frequency bands simultaneously.
- Processor 910 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 910 or an instruction in a form of software.
- the processor 910 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
- DSP digital signal processor
- ASIC application specific integrated circuit
- FPGA field programmable gate array
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc. In the storage medium.
- the storage medium is located in the memory 920.
- the processor 910 reads the information in the memory 920 and completes the steps of the foregoing method in combination with hardware.
- the bus system 930 may include a power bus, a control bus, and a status signal bus in addition to the data bus. Wait. However, for clarity of description, various buses are labeled as bus system 930 in the figure.
- the processor 910 determines, according to the third CE sequence and the phase shift signal sequence, the M group second CE sequence
- a first CE sequence is generated based on the M group second CE sequence.
- the processor 910 arranges the M groups of second CE sequences in an interleaved manner to generate a first CE sequence.
- the processor 910 generates a first CE sequence according to the M group second CE sequence by serially arranged.
- the processor 910 determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal. Delay.
- the processor 910 generates a CE sequence according to the following formula:
- n' nM+m-1, 0 ⁇ n' ⁇ NM, 0 ⁇ n ⁇ N, n' denotes a label of a character in the first CE sequence, and p(n') denotes a first CE sequence.
- the processor 910 generates a CE sequence according to the following formula:
- n' denotes the label of the character in the CE sequence
- the processor 910 generates a first CE sequence for each of the plurality of antennas based on the third CE sequence and the phase shifted signal sequence.
- the processor 910 determines, according to the third CE sequence and the phase shift signal sequence, the M group second CE sequence of each antenna,
- a first CE sequence of each antenna is generated in a cyclic shift manner.
- the number of multiple antennas is K,
- the processor 910 determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- Processor 910 determines the initial CE sequence according to the following formula:
- n' 0 nM + m-1, 0 ⁇ n' 0 ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Indicates the initial CE sequence,
- the processor 910 determines a first CE sequence for each antenna according to the following formula:
- n represents the label of the character in the CE sequence of each antenna
- p k (n′′) represents the first CE sequence of the kth antenna among the K antennas, 1 ⁇ k ⁇ K
- c ⁇ (y) is based on the initial CE sequence
- c ⁇ k (z) represents the base sequence of the kth antenna of the K antennas.
- the processor 910 generates an initial CE sequence of each antenna by using a cyclic shift according to the third CE sequence.
- the M sets of second CE sequences are arranged in an interleaved manner to generate a CE sequence for each antenna.
- the number of multiple antennas is K,
- Processor 910 determines an initial CE sequence for each antenna according to the following formula:
- the processor 910 generates M sets of second CE sequences according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- the processor 910 determines a first CE sequence for each antenna according to the following formula:
- the processor 910 determines, according to the third CE sequence and the phase shift signal sequence, the M group second CE sequence of each antenna,
- a first CE sequence for each antenna is generated based on the initial CE sequence and the preset coefficients.
- the number of multiple antennas is K,
- the processor 910 determines the M group second CE sequence according to the following formula:
- ⁇ m represents the value of the smallest signal interference between the channels m 1 and m 2 among the M channels
- l 1 and l 2 represent the delays of the channels m 1 and m 2 respectively
- N g represents the maximum caused by the multipath of the transmission signal.
- Processor 910 determines the initial CE sequence according to the following formula:
- n' 0 (m-1)M+n ⁇ NM, n' 0 represents the label of the character in the initial CE sequence, Indicates the initial CE sequence;
- the processor 910 determines the CE sequence according to the following formula:
- F(k,m) represents a preset coefficient
- 0 ⁇ n" (m-1)M+n ⁇ N*M
- n" represents the number of characters in the first CE sequence of each antenna
- 1 ⁇ k ⁇ K,p k (n") represents the first CE sequence of the kth antenna of the K antennas.
- the preset coefficients are:
- system and “network” are used interchangeably herein.
- the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
- the character "/" in this article generally indicates that the contextual object is an "or" relationship.
- B corresponding to A means that B is associated with A, and B can be determined according to A.
- determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of cells is only a logical function division.
- multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication through some interface, device or unit.
- the letter connection can also be electrical, mechanical or other form of connection.
- the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
- a storage medium may be any available media that can be accessed by a computer.
- computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
- connection may suitably be a computer readable medium.
- the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
- coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media.
- a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.
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Abstract
本发明实施例提供了一种传输数据的方法和设备,该方法包括生成第一信道估计CE序列,第一CE序列包括M组第二CE序列,第二CE序列由第三CE序列变换得到,第三CE序列满足802.11ad标准,其中M为大于或等于2的正整数;向接收端设备发送物理层协议数据单元PPDU,PPDU包括第一CE序列,其中,承载PPDU的信道带宽为M个连续频段带宽之和,M组第二CE序列与M个连续频段一一对应。本发明实施例通过生成支持多个信道的第一CE序列,进而使得收发信机支持同时多个信道的数据收发,能够提高数据的传输速率。
Description
本发明实施例涉及通信技术领域,特别涉及一种传输数据的方法和设备。
802.11系列标准对无线局域网络(Wireless Local Area Networks,WLAN)的标准化使得WLAN技术的成本大大降低。采用无线保真(Wireless Fidelity,Wi-Fi)无线通信技术的产品,需要通过Wi-Fi联盟认证,目的是改善基于802.11标准的无线网络产品之间的互通性,使用802.11系列协议的无线局域网可以称为Wi-Fi网络。
目前,802.11标准,历经802.11a,802.11b,802.11g,802.11n和802.11ac等各个版本,技术发展越来越成熟,提供的系统传输速度也越来越大,目前运行于5GHz频段的802.11ac最大已经可以支持1.3Gbps。另一方面,由于其特有的灵活性,在家用和商用环境中得到了越来越多的应用。
802.11ad是IEEE 802.11(或称为WLAN,无线局域网)系统中的一个分支,工作于60GHz高频段,主要用于实现家庭内部无线高清音视频信号的传输,为家庭多媒体应用带来更完备的高清视频解决方案,也称作WiGig(60GHz Wi-Fi)。相对于目前的WiFi技术,802.11ad技术在多媒体应用方面具有高容量、高速率(PHY采用OFDM多载波方案时最高传输速率可达7Gbps、采用单载波调制方案时最高传输速率可达4.6Gbps)、低延迟、低功耗等特点。IEEE802.11标准组织在2014年5月创建新的Next Generation60GHz Study Group(NG60SG),并2014年9月NG60SG召开了第一次正式会议,计划开发NG60标准作为802.11ad 60GHz WLAN下一代的演进技术,其主要目标为峰值速率从7Gbps提升到大于20Gbps,另外还希望扩展应用范围,除继续支持802.11ad点对点近距离的无线高清音视频信号为主的应用外,还引入无线接入,回传,点到多点等各种情景。
然而,现有802.11ad中的峰值速率最大为7Gbps,而在下一代的802.11ad也可以称为NG60中,要求将其提升到大于20Gbps。因此,在NG60标准协议中,如何提高数据的传输速率成为亟待解决的问题。
发明内容
本发明实施例提供了一种传输数据的方法和设备,该方法能够提高数据的传输速率。
第一方面,提供了一种用于无线局域网的数据传输的方法,包括:
生成第一信道估计CE序列,该第一CE序列包括M组第二CE序列,该第二CE序列由第三CE序列变换得到,该第三CE序列满足802.11ad标准,该第三CE序列包括:[-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128]或[-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128–Gb128],其中M为大于或等于2的正整数;
向接收端设备发送物理层协议数据单元PPDU,该PPDU包括该第一CE序列,其中,承载该PPDU的信道带宽为M个连续频段带宽之和,该M组第二CE序列与该M个连续频段一一对应。
结合第一方面,在第一种可能的实现方式中,应用于单天线多信道的场景时,
该生成第一信道估计CE序列,包括:
根据该第三CE序列与相移信号序列,确定该M组第二CE序列;
根据该M组第二CE序列生成该第一CE序列。
结合第一种可能的实现方式,在第二种可能的实现方式中,该根据该M组第二CE序列生成该第一CE序列,包括:
采用交织的方式排列该M组第二CE序列,生成该第一CE序列。
结合第一种可能的实现方式,在第三种可能的实现方式中,该根据该M组第二CE序列生成该第一CE序列,包括:
采用串联的方式排列该M组第二CE序列,生成该第一CE序列。
结合第一至第三种可能的实现方式中的任一种可能的实现方式,在第四种可能的实现方式中,该根据该第三CE序列和相移信号序列,确定该M组第二CE序列,包括根据以下公式确定该M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;n=0,…,N-1,表示该第三CE序列中字符的标号;N1为预设的优
化值,0<N1≤N,其中,N表示该第三CE序列中字符的总个数;p0(n)表示该第三CE序列,pm(n)表示该M组第二CE序列中的第m第二CE序列,表示与该第m第二CE序列对应的该相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
结合第四种可能的实现方式,在第五种可能的实现方式中,该采用交织的方式排列该M组第二CE序列,生成该第一CE序列,包括根据以下公式生成该第一CE序列:
p(n′)=p(nM+m-1)=pm(n)
其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示该第一CE序列中的字符的标号,p(n′)表示该第一CE序列。
结合第四种可能的实现方式,在第六种可能的实现方式中,
该采用串联的方式排列该M组第二CE序列,生成该第一CE序列,包括根据以下公式生成该第一CE序列:
p(n′)=p((m-1)N+n)=pm(n)
其中,n′表示该第一CE序列中的字符的标号,n′=(m-1)M+n,0≤n′<NM,0≤n<N,p(n′)表示该第一CE序列。
结合第一方面,在第七种可能的实现方式中,应用于多天线多信道的场景时,
该生成第一信道估计CE序列,包括:
根据该第三CE序列与相移信号序列,生成该多天线中每个天线的该第一CE序列。
结合第七种可能的实现方式,在第八种可能的实现方式中,该根据该第三CE序列与相移信号序列生成该多天线中每个天线的该第一CE序列,包括:
根据该第三CE序列和相移信号序列,确定该每个天线的该M组第二
CE序列,
采用交织的方式排列该M组第二CE序列,生成该每个天线的初始CE序列;
根据该初始CE序列,采用循环移位的方式生成该每个天线的该第一CE序列。
结合第八种可能的实现方式,在第九种可能的实现方式中,该多天线的个数为K,
该根据该第三CE序列和相移信号序列,确定该每个天线的M组第二CE序列,包括根据以下公式确定该M组第二CE序列:
其中,m=1,2,…,M,表示该M组第二CE序列中的第m第二CE序列的编号;N表示该第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示该第三CE序列中字符的标号;p0(n)表示该第三CE序列,pm(n)表示该M组第二CE序列中的第m第二CE序列,表示与该第m第二CE序列对应的该相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
该采用交织的方式排列该M组第二CE序列,生成该每个天线的初始CE序列,包括根据以下公式确定该初始CE序列:
该根据该初始CE序列,采用循环移位的方式生成该每个天线的该第一CE序列,包括根据以下公式确定该每个天线的该第一CE序列:
0≤n″<N*M,n″表示该每个天线的该第一CE序列中的字符的标号,
pk(n″)表示K个天线中第k天线的该第一CE序列,1≤k≤K
其中,a和b均为常数,a+b=N,且a>b;
cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
结合第七种可能的实现方式,在第十种可能的实现方式中,
该根据该第三CE序列与相移信号序列生成该多天线中每个天线的该第一CE序列,包括:
根据该第三CE序列,采用循环移位的方式生成该每个天线的初始CE序列;
根据该初始CE序列和相移信号,生成该每个天线的M组第二CE序列,
采用交织的方式排列该M组第二CE序列,生成该每个天线的该第一CE序列。
结合第十种可能的实现方式,在第十一种可能的实现方式中,该多天线的个数为K,
该根据该第三CE序列,采用循环移位的方式生成该每个天线的初始CE序列,包括根据以下公式确定该每个天线的初始CE序列:
p0(n)表示该第三CE序列,0≤n<Nn=0,…,N-1,n表示该第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;
该根据该初始CE序列和相移信号,生成该每个天线的M组第二CE序列,包括根据以下公式生成该M组第二CE序列:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
该采用交织的方式排列该M组第二CE序列,生成该每个天线的该第一CE序列,包括根据以下公式确定该每个天线的该第一CE序列:
0≤n″=nM+m-1<N*M,n″表示该每个天线的该第一CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的该第一CE序列。
结合第七种可能的实现方式,在第十二种可能的实现方式中,该根据该第三CE序列与相移信号序列生成该多天线中每个天线的该第一CE序列,包括:
根据该第三CE序列和相移信号序列,确定该每个天线的M组第二CE序列,
采用串联的方式排列该M组第二CE序列,生成该天线每个天线的初始CE序列;
根据该初始CE序列和预设系数生成该每个天线的该第一CE序列。
结合第十二种可能的实现方式,在第十三种可能的实现方式中,该多天线的个数为K,
该根据该第三CE序列和相移信号序列,确定该每个天线的M组第二CE序列,包括根据以下公式确定该M组第二CE序列:
其中,m=1,2,…,M,表示该M组第二CE序列中的第m第二CE序列的编号;N表示该第二CE序列的个数;n=0,…,N-1,表示该第三CE序列中字符的标号;p0(n)表示该第三CE序列,pm(n)表示该M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与该第m第二CE序列对应的该相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
该采用串联的方式排列该M组第二CE序列,生成该天线每个天线的初始CE序列,包括根据以下公式确定该初始CE序列:
该根据该初始CE序列和预设系数生成该每个天线的该第一CE序列,包括根据以下公式确定该第一CE序列:
F(k,m)表示该预设系数,n″=(m-1)M+n,0≤n″<N*M,n″表示该每个天线的该第一CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的该第一CE序列。
结合第十三种可能的实现方式,在第十四种可能的实现方式中,当K的取值分别为2、3和4时,
该预设系数分别为:
第二方面,提供了一种用于无线局域网的数据传输的设备,包括:
生成单元,用于生成第一信道估计CE序列,该第一CE序列包括M组第二CE序列,该第二CE序列由第三CE序列变换得到,该第三CE序列满足802.11ad标准,该第三CE序列包括:[-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128]或[-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128–Gb128],其中M为大于或等于2的正整数;
发送单元,用于向接收端设备发送物理层协议数据单元PPDU,该PPDU包括该第一CE序列,其中,承载该PPDU的信道带宽为M个连续频段带宽之和,该M组第二CE序列与该M个连续频段一一对应。
结合第一方面,在第一种可能的实现方式中,应用于单天线多信道的场景时,
该生成单元根据该第三CE序列与相移信号序列,确定该M组第二CE序列;
根据该M组第二CE序列生成该第一CE序列。
结合第二方面的第一种可能的实现方式,在第二种可能的实现方式中,该生成单元采用交织的方式排列该M组第二CE序列,生成该第一CE序列。
结合第二方面的第一种可能的实现方式,在第三种可能的实现方式中,该生成单元采用串联的方式排列该M组第二CE序列,生成该第一CE序列。
结合第二方面的第一至第三种可能的实现方式中的任一种可能的实现方式,在第四种可能的实现方式中,该生成单元根据以下公式确定该M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;n=0,…,N-1,表示该第三CE序列中字符的标号;N1为预设的优化值,0<N1≤N,其中,N表示该第二CE序列的个数;p0(n)表示该第三CE序列,pm(n)表示该M组第二CE序列中的第m第二CE序列,表示与该第m第二CE序列对应的该相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
结合第二方面的第四种可能的实现方式,在第五种可能的实现方式中,该生成单元根据以下公式生成该第一CE序列:
p(n′)=p(nM+m-1)=pm(n)
其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示该第一CE序列中的字符的标号,p(n′)表示该第一CE序列。
结合第二方面的第四种可能的实现方式,在第六种可能的实现方式中,
该生成单元根据以下公式生成该第一CE序列:
p(n′)=p((m-1)N+n)=pm(n)
其中,n′表示该第一CE序列中的字符的标号,n′=(m-1)M+n,0≤n′<NM,0≤n<N,p(n′)表示该第一CE序列。
结合第二方面,在第七种可能的实现方式中,应用于多天线多信道的场景时,
该生成单元根据该第三CE序列与相移信号序列,生成该多天线中每个天线的该第一CE序列。
结合第二方面的第七种可能的实现方式,在第八种可能的实现方式中,该生成单元根据该第三CE序列和相移信号序列,确定该每个天线的该M组第二CE序列,
采用交织的方式排列该M组第二CE序列,生成该每个天线的初始CE序列;
根据该初始CE序列,采用循环移位的方式生成该每个天线的该第一CE序列。
结合第八种可能的实现方式,在第九种可能的实现方式中,该多天线的个数为K,
该生成单元根据以下公式确定该M组第二CE序列:
其中,m=1,2,…,M,表示该M组第二CE序列中的第m第二CE序列的编号;N表示该第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示该第三CE序列中字符的标号;p0(n)表示该第三CE
序列,pm(n)表示该M组第二CE序列中的第m第二CE序列,表示与该第m第二CE序列对应的该相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
该生成单元根据以下公式确定该初始CE序列:
该生成单元根据以下公式确定该每个天线的第一CE序列:
0≤n″<N*M,n″表示该每个天线的CE序列中的字符的标号,
pk(n″)表示K个天线中第k天线的第一CE序列,1≤k≤K
其中,a和b均为常数,a+b=N,且a>b;
cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
结合第二方面的第七种可能的实现方式,在第十种可能的实现方式中,
该生成单元根据该第三CE序列,采用循环移位的方式生成该每个天线的初始CE序列;
根据该初始CE序列和相移信号,生成该每个天线的M组第二CE序列,
采用交织的方式排列该M组第二CE序列,生成该每个天线的该第一CE序列。
结合第二方面的第十种可能的实现方式,在第十一种可能的实现方式中,该多天线的个数为K,
该生成单元根据以下公式确定该每个天线的初始CE序列:
p0(n)表示该第三CE序列,0≤n<Nn=0,…,N-1,n表示该第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;
该生成单元根据以下公式生成该M组第二CE序列:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
该生成单元根据以下公式确定该每个天线的该第一CE序列:
其中,n″=nM+m-1,0≤n″<N*M,n″表示该每个天线的CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的该第一CE序列。
结合第二方面的第七种可能的实现方式,在第十二种可能的实现方式中,该生成单元根据该第三CE序列和相移信号序列,确定该每个天线的M组第二CE序列,
采用串联的方式排列该M组第二CE序列,生成该天线每个天线的初始CE序列;
根据该初始CE序列和预设系数生成该每个天线的CE序列。
结合第二方面的第十二种可能的实现方式,在第十三种可能的实现方式中,该多天线的个数为K,
该生成单元根据以下公式确定该M组第二CE序列:
其中,m=1,2,…,M,表示该M组第二CE序列中的第m第二CE序列的编号;N表示该第二CE序列的个数;n=0,…,N-1,表示该第三CE序列中字符的标号;p0(n)表示该第三CE序列,pm(n)表示该M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与该第m第二CE序列对应的该相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
该生成单元根据以下公式确定该初始CE序列:
该生成单元根据以下公式确定该第一CE序列:
F(k,m)表示该预设系数,0≤n″=(m-1)M+n<N*M,n″表示该每个天线的该第一CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的该第一CE序列。
结合第二方面的第十三种可能的实现方式,在第十四种可能的实现方式中,当K的取值分别为2、3和4时,
该预设系数分别为:
基于上述技术方案,本发明实施例通过生成支持多个信道的第一CE序列,进而使得收发信机支持同时多个信道的数据收发,能够提高数据的传输速率。
为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例可应用的传输数据的场景示意图。
图2是根据本发明一个实施例的传输数据的方法的示意性流程图。
图3是一种现有802.11ad中的CE序列示意图。
图4是一种现有802.11ad中的CE序列示意图。
图5是根据本发明一个实施例的第一CE结构示意图。
图6是根据本发明另一实施例的第一CE结构示意图。
图7是根据本发明另一实施例的第一CE结构示意图。
图8是根据本发明一个实施例的用于数据传输的设备的示意框图。
图9是根据本发明另一实施例的用于数据传输的设备的示意框图。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都应属于本发明保护的范围。
本发明的技术方案,可以应用于正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)系统中,例如,WLAN系统,特别是无线保真(Wireless Fidelity,WiFi)等;本发明的技术方法还可以应用于单载波
(Single Carrier,SC)系统中。当然,本发明实施例的方法还可应用其它类型的OFDM系统中,本发明实施例在此不作限制。
相对应的,发送端设备和接收端设备可以是WLAN中用户站点(Station,STA),该用户站点也可以称为系统、用户单元、接入终端、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理、用户装置或用户设备(User Equipment,UE)。该STA可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字助理(Personal Digital Assistant,PDA)、具有无线局域网(例如Wi-Fi)通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备。
另外,发送端设备和接收端设备也可以是WLAN中接入点(AP,Access Point),接入点可用于与接入终端通过无线局域网进行通信,并将接入终端的数据传输至网络侧,或将来自网络侧的数据传输至接入终端。
接收端设备可以是与发送端设备相对应的通信对端。
以下,为了便于理解和说明,作为示例而非限定,以将本发明的传输数据的方法和装置在Wi-Fi系统中的执行过程和动作进行说明。
图1是本发明实施例可应用的传输数据的场景示意图。如图1所示的场景系统可以是WLAN系统,图1的系统包括一个或者多个接入点AP101和一个或者多个站点STA102,图1以一个接入点和两个站点为例。接入点101和站点102之间可以通过各种标准进行无线通信。其中,接入点101和站点102之间可以采用多用户多入多出技术(Multi-User Multiple-Input Multiple-Output,MU-MIMO)进行无线通信。
图2是根据本发明一个实施例的传输数据的方法的示意性流程图。图2所示的方法由发送端设备执行,发送端设备可以为站点或接入点,当发送端设备为接入点时,接收端设备为站点;当发送端设备为站点时,接收端设备为接入点。具体地,如图2所示的方法应用于60GHz频段的无线局域网WLAN中,包括:
210,生成第一信道估计CE序列,第一CE序列包括M组第二CE序列,第二CE序列由第三CE序列变换得到,第三CE序列满足802.11ad标准,第三CE序列包括:[-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128]或[-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128
-Ga128–Gb128],其中M为大于或等于2的正整数。
220,向接收端设备发送物理层协议数据单元PPDU,PPDU包括第一CE序列,其中,承载PPDU的信道带宽为M个连续频段带宽之和,M组第二CE序列与M个连续频段一一对应。
因此,本发明实施例通过生成支持多个连续频段的第一CE序列,进而使得收发信机支持同时多个连续频段上的数据收发,能够提高数据的传输速率。
应理解,本发明实施例中,M个连续频段也可以称为M个连续子信道,也就是说,本发明实施例中的第一CE序列包括的多个第二CE序列分别与多个子信道一一对应。
应理解,本发明实施例中的多信道是相对现有802.11ad而言的,例如,在现有802.11ad中物理层协议数据单元帧,也即物理层汇聚过程(physical layer convergence procedure,PLCP)协议数据单元(PLCP Protocol Data Unit,PPDU)仅占用一个信道,例如仅占用一个信道带宽为2.16GHZ的信道,而本发明实施例中的PPDU可以占用现有的多信道,例如可以占用多个信道带宽为2.16GHZ的信道,例如,占用2、3或4个信道带宽为2.16GHZ的信道,那么在本发明实施例中的信道带宽可以为占用的多个信道的带宽之和,例如,本发明实施例中的信道带宽可以为4.32GHZ、6.48GHZ或8.64GHZ,也就是说在本发明实施例中,为了描述方便,本发明实施例中的承载PPDU的(一个)信道可以看成是现有的多个信道之和。
目前802.11ad中的CE只支持一个信道的数据传输,在本发明实施例中的CE,通过生成支持多个信道的信道估计CE序列,进而使得收发信机支持同时多个信道的数据收发,能够提高数据的传输速率。
应理解,本发明实施例中的第三CE序列例如可以为现有的802.11ad中的CE序列。例如第三CE序列可以为如图3所示结构,其中,图3是802.11ad系统中采用单载波方式发送的CE的构成示意图。如图3所示的第三CE序列包括Gu512、Gv512和Gv128,其中,
Gu512=[-Gb128 -Ga128 Gb128 -Ga128]
Gv512=[-Gb128 Ga128 -Gb128 -Ga128]
Gv128=[-Gb128]
再例如,第三CE序列可以为如图4所示结构,其中,图4是802.11ad系统
中采用多载波(OFDM)方式发送的CE的构成示意图。如图4所示的第三CE序列包括Gv512、Gu512和Gv128。
更进一步的,本发明实施例中的第三CE序列也可以是在图3和图4中的CE序列的基础上乘上相应的相移信号而获得的单载波和多载波(OFDM)对应的序列:
即本发明实施例中的第三CE序列可以为:
n=0,1...1151
或者可以为:
n=0,1...1151
其中,rCEsc(n)为802.11ad中单载波对应的CE序列(导频),即可以为本发明实施例中的第三CE序列,rCEOFDM(n)为802.11ad中多载波(OFDM)对应的CE序列(导频),即可以为本发明实施例中的第三CE序列,n表示第三CE序列中字符的标号。
应理解,上述的第三CE序列仅是以现有的802.11ad中的CE序列举例来说明,在本发明实施例中的第三CE序列还可以为其形式,只要包括上述的九个格雷序列即可,该九个格雷序列的顺序本发明实施例并不限定。且本发明实施例中的第三CE序列的个数不限于1152,也就是说本发明实施例的第三CE序列还可以包括其他的格雷序列,本发明实施例并不对此做限定。
应注意,本发明实施例可以应用用单天线多信道的场景中,也可以应用于多天线多信道的场景中。下面针对本发明实施例可应用的场景,分别举例进行详细说明。
可选地,作为另一实施例,应用于单天线多信道的场景时,
在210中,根据第三CE序列与相移信号序列,确定M组第二CE序列;
根据M组第二CE序列生成第一CE序列。
可选地,作为另一实施例,
根据第三CE序列和相移信号序列,确定M组第二CE序列,包括根据
以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;n=0,…,N-1,表示第三CE序列中字符的标号;N1为预设的优化值,0<N1≤N;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
举例而言,当m1=1,m2=2时,选择Δ1与Δ2的取值满足上述公式。如果m1=2,m2=3时,选择Δ2与Δ3的取值满足上述,依次类推。
例如,当第三CE序列为上述现有的802.11ad中的CE序列时,N可以为1152,M取值可以为[1,4]中的任一整数,N1可以为1024。
需要说明的是,本发明实施例中可以采用多种方式根据M组第二CE序列生成CE序列,下面举例进行说明。
可选地,第一种方式:根据M组第二CE序列生成第一CE序列,包括:
采用交织的方式排列M组第二CE序列,生成第一CE序列。
可替代地,第二种方式:根据M组第二CE序列生成第一CE序列,包括:
采用串联的方式排列根据M组第二CE序列,生成第一CE序列。
具体而言,在第一种方式中,采用交织的方式排列M组第二CE序列,生成第一CE序列,包括根据以下公式生成第一CE序列:
p(n′)=p(nM+m-1)=pm(n)
其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示第一CE序列中的字符的标号,p(n′)表示第一CE序列。
例如,当第三CE序列为上述现有的802.11ad中的CE序列时,N可以为1152,N1可以为1024,M取值可以为[1,4]中的任一整数,n′∈[0,NM)例如,M=4,n′∈[0,4608)。
例如,如图5所示,图5是根据本发明一个实施例的第一CE结构示意图。其中,粗细相同的箭头代表一组第二CE序列,由图5可以看出,图5中的第一CE序列是由交织排列的4组第二CE序列构成。
在第二种方式中,采用串联的方式排列M组第二CE序列,生成第一CE序列,包括根据以下公式生成CE序列:
p(n′)=p((m-1)N+n)=pm(n)
其中,n′表示第一CE序列中的字符的标号,n′=(m-1)M+n,0≤n′<NM,0≤n<N,p(n′)表示第一CE序列。
例如,当第三CE序列为上述现有的802.11ad中的CE序列时,N可以为1152,N1可以为1024,M取值可以为[1,4]中的任一整数,n′∈[0,NM)例如,M=4,n′∈[0,4608)。
例如,如图6所示,图6是根据本发明另一实施例的第一CE结构示意图。其中,粗细相同的箭头代表一组第二CE序列,由图6可以看出,图6中的第一CE序列是由串联排列的4组第二CE序列构成。
可选地,作为另一实施例,应用于多天线多信道的场景时,
在210中,根据第三CE序列与相移信号序列,生成多天线中每个天线的第一CE序列。
需要说明的是,本发明实施例中可以采用多种方式根据第三CE序列与相移信号序列,生成多天线中每个天线的CE序列,下面举例进行说明。
第一种方式,作为另一实施例,根据第三CE序列与相移信号序列,生成多天线中每个天线的CE序列,包括:
根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,
采用交织的方式排列M组第二CE序列,生成每个天线的初始CE序列;
根据初始CE序列,采用循环移位的方式生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,包括根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示第三CE序列中字符的标号;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
采用交织的方式排列M组第二CE序列,生成每个天线的初始CE序列,包括根据以下公式确定初始CE序列:
根据初始CE序列,采用循环移位的方式生成每个天线的CE序列,包括根据以下公式确定每个天线的CE序列:
0≤n″<N*M,n″表示每个天线的CE序列中的字符的标号,
pk(n″)表示K个天线中第k天线的CE序列,1≤k≤K
其中,a和b均为常数,a+b=N,且a>b;
cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
例如,当第三CE序列为上述现有的802.11ad中的CE序列时,N可以为1152,a可以为1024,b可以为128,N1可以为1024,K的取值可以为[1,
8]中的任一整数,M取值可以为[1,4]中的任一整数,n″∈[0,NM),例如,M=4,n″∈[0,4608)。
其中,对如何获得上述K个天线中第k天线的基序列进行详细说明,当k=1时,cε1(z)=cε(z)
例如,第一个天线的基序列如表一所示。
表一,第一个天线的基序列
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
其中,表格中每一个小格代表128*M个数据。
第二个天线的基序列为第一个天线的基础上移位获得,例如,第二个天线的基序列如表二所示。
表二,第二个天线的基序列
2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
同理,第三到第八个天线的基序列由上述移位方式可获得。
第二种方式,作为另一实施例,根据第三CE序列生成多天线中每个天线的第一CE序列,包括:
根据第三CE序列,采用循环移位的方式生成每个天线的初始CE序列;
根据初始CE序列和相移信号,生成每个天线的M组第二CE序列,
采用交织的方式排列M组第二CE序列,生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
根据第三CE序列,采用循环移位的方式生成每个天线的初始CE序列,包括根据以下公式确定每个天线的初始CE序列:
p0(n)表示第三CE序列,0≤n<Nn=0,…,N-1,n表示第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;
根据初始CE序列和相移信号,生成每个天线的M组第二CE序列,包括根据以下公式生成M组第二CE序列:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
采用交织的方式排列M组第二CE序列,生成每个天线的CE序列,包括根据以下公式确定每个天线的第一CE序列:
0≤n″=nM+m-1<N*M,n″表示每个天线的CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的第一CE序列,。
例如,当第三CE序列为上述现有的802.11ad中的CE序列时,N可以为1152,a可以为1024,b可以为128,N1可以为1024,K的取值可以为[1,8]中的任一整数,M取值可以为[1,4]中的任一整数,n″∈[0,NM),例如,M=4,n″∈[0,4608)。
第三种方式,作为另一实施例,根据第三CE序列与相移信号序列生成多天线中每个天线的第一CE序列,包括:
根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,
采用串联的方式排列M组第二CE序列,生成天线每个天线的初始CE序列;
根据初始CE序列和预设系数生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,包括根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;n=0,…,N-1,表示第三CE序列中字符的标号;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
采用串联的方式排列M组第二CE序列,生成天线每个天线的初始CE序列,包括根据以下公式确定初始CE序列:
根据初始CE序列和预设系数生成每个天线的第一CE序列,包括根据以下公式确定第一CE序列:
F(k,m)表示预设系数,n″=(m-1)M+n,0≤n″<N*M,n″表示每个天线的第一CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的第一CE序列。
可选地,作为另一实施例,当K的取值分别为2、3和4时,
预设系数分别为:
例如,当第三CE序列为上述现有的802.11ad中的CE序列时,N可以为
1152,N1可以为1024,K的取值可以为[1,8]中的任一整数,M取值可以为[1,4]中的任一整数,n″∈[0,NM),例如,M=4,n″∈[0,4608)。
应注意,图1至图7的例子仅仅是为了帮助本领域技术人员理解本发明实施例,而非要将本发明实施例限于所例示的具体数值或具体场景。本领域技术人员根据所给出的图1至图7的例子,显然可以进行各种等价的修改或变化,这样的修改或变化也落入本发明实施例的范围内。
上文中结合图1至图7详细描述了本发明实施例中的传输数据的方法,下面结合图8和图9详细描述本发明实施例的传输数据的设备。
图8是根据本发明一个实施例的用于无线局域网的数据传输的设备的示意框图。图8所示的设备800也可以称为发送端设备,发送端设备可以为站点或接入点,当发送端设备为接入点时,接收端设备为站点;当发送端设备为站点时,接收端设备为接入点。应理解图8所示的设备800与图1所示的方法相对应,能够实现图1方法实施例中的各个过程,设备800的具体功能可参见图1中的相应描述,为避免重复,此处适当省略详细描述。
具体地,如图8所示的设备800包括:生成单元810和发送单元820。
生成单元810用于生成第一信道估计CE序列,第一CE序列包括M组第二CE序列,第二CE序列由第三CE序列变换得到,第三CE序列满足802.11ad标准,第三CE序列包括:[-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128]或[-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128–Gb128],其中M为大于或等于2的正整数;
发送单元820用于向接收端设备发送物理层协议数据单元PPDU,PPDU包括第一CE序列,其中,承载PPDU的信道带宽为M个连续频段带宽之和,M组第二CE序列与M个连续频段一一对应。因此,本发明实施例通过生成支持多个连续频段的第一CE序列,进而使得收发信机支持同时多个连续频段上的数据收发,能够提高数据的传输速率。
可选地,作为另一实施例应用于单天线多信道的场景时,
生成单元810根据第三CE序列与相移信号序列,确定M组第二CE序列;
根据M组第二CE序列生成第一CE序列。
进一步地,作为另一实施例,生成单元810采用交织的方式排列M组第二CE序列,生成第一CE序列。
可替代地,作为另一实施例,生成单元810采用串联的方式排列根据M组第二CE序列,生成CE序列。
可选地,作为另一实施例,
生成单元810根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;n=0,…,N-1,表示第三CE序列中字符的标号;N1为预设的优化值,0<N1≤N;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
可选地,作为另一实施例,
生成单元810根据以下公式生成第一CE序列:
p(n′)=p(nM+m-1)=pm(n)
其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示第一CE序列中的字符的标号,p(n′)表示第一CE序列。
可选地,作为另一实施例,
生成单元810根据以下公式生成CE序列:
p(n′)=p((m-1)N+n)=pm(n)
其中,n′表示第一CE序列中的字符的标号,n′=(m-1)M+n,0≤n′<NM,0≤n<N,p(n′)表示第一CE序列。
可选地,作为另一实施例,应用于多天线多信道的场景时,
生成单元810根据第三CE序列与相移信号序列,生成多天线中每个天线的第一CE序列。
进一步地,作为另一实施例,
生成单元810根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,
采用交织的方式排列M组第二CE序列,生成每个天线的初始CE序列;
根据初始CE序列,采用循环移位的方式生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
生成单元810根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示第三CE序列中字符的标号;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
可选地,作为另一实施例,生成单元810根据以下公式确定初始CE序列:
其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示第一CE序列中的字符的标号,p(n′)表示第一CE序列。
可选地,作为另一实施例,生成单元810根据以下公式确定每个天线的
第一CE序列:
0≤n″<N*M,n″表示每个天线的CE序列中的字符的标号,
pk(n″)表示K个天线中第k天线的第一CE序列,1≤k≤K
其中,a和b均为常数,a+b=N,且a>b;
cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
可选地,作为另一实施例,生成单元810根据第三CE序列,采用循环移位的方式生成每个天线的初始CE序列;
根据初始CE序列和相移信号,生成每个天线的M组第二CE序列,
采用交织的方式排列M组第二CE序列,生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
生成单元810根据以下公式确定每个天线的初始CE序列:
p0(n)表示第三CE序列,0≤n<Nn=0,…,N-1,n表示第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;
生成单元810根据以下公式生成M组第二CE序列:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
生成单元810根据以下公式确定每个天线的CE序列:
0≤n″=nM+m-1<N*M,n″表示每个天线的CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的第一CE序列,。
可选地,作为另一实施例,生成单元810根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,
采用串联的方式排列M组第二CE序列,生成天线每个天线的初始CE序列;
根据初始CE序列和预设系数生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
生成单元810根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;n=0,…,N-1,表示第三CE序列中字符的标号;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
生成单元810根据以下公式确定初始CE序列:
生成单元810根据以下公式确定CE序列:
F(k,m)表示预设系数,0≤n″=(m-1)M+n<N*M,n″表示每个天线的CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的第一CE序列。
可选地,作为另一实施例,当K的取值分别为2、3和4时,
预设系数分别为:
图9是根据本发明另一实施例的用于无线局域网的数据传输的设备的示意框图。图9所示的设备900也可以称为发送端设备,发送端设备可以为站点或接入点,当发送端设备为接入点时,接收端设备为站点;当发送端设备为站点时,接收端设备为接入点。应理解图9所示的设备900与图1所示的方法相对应,能够实现图1方法实施例中的各个过程,设备900的具体功能可参见图1中的相应描述,为避免重复,此处适当省略详细描述。
如图9所示的设备900包括处理器910、存储器920、总线系统930和收发器940。
具体地,处理器910通过总线系统930调用存储在存储器920中的代码,生成第一信道估计CE序列,第一CE序列包括M组第二CE序列,第二CE序列由第三CE序列变换得到,第三CE序列满足802.11ad标准,第三CE序列包括:[-Gb128-Ga128 Gb128-Ga128-Gb128 Ga128-Gb128-Ga128-Gb128]或[-Gb128 Ga128-Gb128-Ga128-Gb128-Ga128 Gb128-Ga128–Gb128],其中M为大于或等于2的正整数;
收发器940用于向接收端设备发送物理层协议数据单元PPDU,PPDU包括第一CE序列,其中,承载PPDU的信道带宽为M个连续频段带宽之和,M组第二CE序列与M个连续频段一一对应。
因此,本发明实施例通过生成支持多个连续频段的第一CE序列,进而使得收发信机支持同时多个连续频段上的数据收发,能够提高数据的传输速率。
上述本发明实施例揭示的方法可以应用于处理器910中,或者由处理器910实现。处理器910可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器910中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器910可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read-Only Memory,ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器920,处理器910读取存储器920中的信息,结合其硬件完成上述方法的步骤,该总线系统930除包括数据总线之外,还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见,在图中将各种总线都标为总线系统930。
可选地,作为另一实施例,应用于单天线多信道的场景时,
处理器910根据第三CE序列与相移信号序列,确定M组第二CE序列;
根据M组第二CE序列生成第一CE序列。
进一步地,作为另一实施例,处理器910采用交织的方式排列M组第二CE序列,生成第一CE序列。
可替代地,作为另一实施例,处理器910采用串联的方式排列根据M组第二CE序列,生成第一CE序列。
可选地,作为另一实施例,处理器910根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;n=0,…,N-1,表示第三CE序列中字符的标号;N1为预设的优化值,0<N1≤N;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
可选地,作为另一实施例,处理器910根据以下公式生成CE序列:
p(n′)=p(nM+m-1)=pm(n)
其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示第一CE序列中的字符的标号,p(n′)表示第一CE序列。
可选地,作为另一实施例,处理器910根据以下公式生成CE序列:
p(n′)=p((m-1)N+n)=pm(n)
其中,n′表示CE序列中的字符的标号,0≤n′=(m-1)M+n<NM,0≤n<N,p(n′)=p((m-1)N+n)表示CE序列。
可选地,作为另一实施例,应用于多天线多信道的场景时,
处理器910根据第三CE序列与相移信号序列,生成多天线中每个天线的第一CE序列。
进一步地,作为另一实施例,
处理器910根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,
采用交织的方式排列M组第二CE序列,生成每个天线的初始CE序列;
根据初始CE序列,采用循环移位的方式生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
处理器910根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示第三CE序列中字符的标号;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
处理器910根据以下公式确定初始CE序列:
处理器910根据以下公式确定每个天线的第一CE序列:
0≤n″<N*M,n″表示每个天线的CE序列中的字符的标号,
pk(n″)表示K个天线中第k天线的第一CE序列,1≤k≤K
其中,a和b均为常数,a+b=N,且a>b;
cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
可选地,作为另一实施例,处理器910根据第三CE序列,采用循环移位的方式生成每个天线的初始CE序列;
根据初始CE序列和相移信号,生成每个天线的M组第二CE序列,
采用交织的方式排列M组第二CE序列,生成每个天线的CE序列。
进一步地,作为另一实施例,多天线的个数为K,
处理器910根据以下公式确定每个天线的初始CE序列:
p0(n)表示第三CE序列,0≤n<Nn=0,…,N-1,n表示第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;
处理器910根据以下公式生成M组第二CE序列:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
处理器910根据以下公式确定每个天线的第一CE序列:
其中,n″=nM+m-1,0≤n″<N*M,n″表示每个天线的CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的第一CE序列。
可选地,作为另一实施例,处理器910根据第三CE序列和相移信号序列,确定每个天线的M组第二CE序列,
采用串联的方式排列M组第二CE序列,生成天线每个天线的初始CE序列;
根据初始CE序列和预设系数生成每个天线的第一CE序列。
进一步地,作为另一实施例,多天线的个数为K,
处理器910根据以下公式确定M组第二CE序列:
其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;N表示第二CE序列的个数;n=0,…,N-1,表示第三CE序列中字符的标号;p0(n)表示第三CE序列,pm(n)表示M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与第m第二CE序列对应的相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:
m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}
Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,
处理器910根据以下公式确定初始CE序列:
处理器910根据以下公式确定CE序列:
F(k,m)表示预设系数,0≤n″=(m-1)M+n<N*M,n″表示每个天线的第一CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的第一CE序列。
可选地,作为另一实施例,当K的取值分别为2、3和4时,
预设系数分别为:
应理解,说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。应理解,在本发明的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,在本发明实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通
信连接,也可以是电的,机械的或其它的形式连接。
作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本发明可以用硬件实现,或固件实现,或它们的组合方式来实现。当使用软件实现时,可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于:计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如,如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的,那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本发明所使用的,盘(Disk)和碟(disc)包括压缩光碟(CD)、激光碟、光碟、数字通用光碟(DVD)、软盘和蓝光光碟,其中盘通常磁性的复制数据,而碟则用激光来光学的复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。
总之,以上所述仅为本发明技术方案的较佳实施例而已,并非用于限定本发明的保护范围。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (30)
- 一种用于无线局域网的数据传输的方法,其特征在于,包括:生成第一信道估计CE序列,所述第一CE序列包括M组第二CE序列,所述第二CE序列由第三CE序列变换得到,所述第三CE序列满足802.11ad标准,所述第三CE序列包括:[-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128]或[-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128–Gb128],其中M为大于或等于2的正整数;向接收端设备发送物理层协议数据单元PPDU,所述PPDU包括所述第一CE序列,其中,承载所述PPDU的信道带宽为M个连续频段带宽之和,所述M组第二CE序列与所述M个连续频段一一对应。
- 根据权利要求1所述的方法,其特征在于,应用于单天线多信道的场景时,所述生成第一信道估计CE序列,包括:根据所述第三CE序列与相移信号序列,确定所述M组第二CE序列;根据所述M组第二CE序列生成所述第一CE序列。
- 根据权利要求2所述的方法,其特征在于,所述根据所述M组第二CE序列生成所述第一CE序列,包括:采用交织的方式排列所述M组第二CE序列,生成所述第一CE序列。
- 根据权利要求2所述的方法,其特征在于,所述根据所述M组第二CE序列生成所述第一CE序列,包括:采用串联的方式排列所述M组第二CE序列,生成所述第一CE序列。
- 根据权利要求2至4中任一项所述的方法,其特征在于,所述根据所述第三CE序列和相移信号序列,确定所述M组第二CE序列,包括根据以下公式确定所述M组第二CE序列:其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;n=0,…,N-1,表示所述第三CE序列中字符的标号;N1为预设的优化值,0<N1≤N,其中,N表示所述第三CE序列中字符的总个数;p0(n)表示所述第三CE序列,pm(n)表示所述M组第二CE序列中的第m第二CE序列,表示与所述第m第二CE序列对应的所述相移信号 序列,其中,当m=m1或m2时,Δm由以下公式确定:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
- 根据权利要求5所述的方法,其特征在于,所述采用交织的方式排列所述M组第二CE序列,生成所述第一CE序列,包括根据以下公式生成所述第一CE序列:p(n′)=p(nM+m-1)=pm(n)其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示所述第一CE序列中的字符的标号,p(n′)表示所述第一CE序列。
- 根据权利要求5所述的方法,其特征在于,所述采用串联的方式排列所述M组第二CE序列,生成所述第一CE序列,包括根据以下公式生成所述第一CE序列:p(n′)=p((m-1)N+n)=pm(n)其中,n′表示所述第一CE序列中的字符的标号,n′=(m-1)M+n,0≤n′<NM,0≤n<N,p(n′)表示所述第一CE序列。
- 根据权利要求1所述的方法,其特征在于,应用于多天线多信道的场景时,所述生成第一信道估计CE序列,包括:根据所述第三CE序列与相移信号序列,生成所述多天线中每个天线的所述第一CE序列。
- 根据权利要求8所述的方法,其特征在于,所述根据所述第三CE序列与相移信号序列生成所述多天线中每个天线的所述第一CE序列,包括:根据所述第三CE序列和相移信号序列,确定所述每个天线的所述M组第二CE序列,采用交织的方式排列所述M组第二CE序列,生成所述每个天线的初始CE序列;根据所述初始CE序列,采用循环移位的方式生成所述每个天线的所述 第一CE序列。
- 根据权利要求9所述的方法,其特征在于,所述多天线的个数为K,所述根据所述第三CE序列和相移信号序列,确定所述每个天线的M组第二CE序列,包括根据以下公式确定所述M组第二CE序列:其中,m=1,2,…,M,表示所述M组第二CE序列中的第m第二CE序列的编号;N表示所述第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示所述第三CE序列中字符的标号;p0(n)表示所述第三CE序列,pm(n)表示所述M组第二CE序列中的第m第二CE序列,表示与所述第m第二CE序列对应的所述相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,所述采用交织的方式排列所述M组第二CE序列,生成所述每个天线的初始CE序列,包括根据以下公式确定所述初始CE序列:所述根据所述初始CE序列,采用循环移位的方式生成所述每个天线的所述第一CE序列,包括根据以下公式确定所述每个天线的所述第一CE序列:0≤n″<N*M,n″表示所述每个天线的所述第一CE序列中的字符的标号,pk(n″)表示K个天线中第k天线的所述第一CE序列,1≤k≤K其中,a和b均为常数,a+b=N,且a>b;cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
- 根据权利要求8所述的方法,其特征在于,所述根据所述第三CE序列与相移信号序列生成所述多天线中每个天线的所述第一CE序列,包括:根据所述第三CE序列,采用循环移位的方式生成所述每个天线的初始CE序列;根据所述初始CE序列和相移信号,生成所述每个天线的M组第二CE序列,采用交织的方式排列所述M组第二CE序列,生成所述每个天线的所述第一CE序列。
- 根据权利要求11所述的方法,其特征在于,所述多天线的个数为K,所述根据所述第三CE序列,采用循环移位的方式生成所述每个天线的初始CE序列,包括根据以下公式确定所述每个天线的初始CE序列:p0(n)表示所述第三CE序列,0≤n<Nn=0,…,N-1,n表示所述第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;所述根据所述初始CE序列和相移信号,生成所述每个天线的M组第二CE序列,包括根据以下公式生成所述M组第二CE序列:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,所述采用交织的方式排列所述M组第二CE序列,生成所述每个天线的所述第一CE序列,包括根据以下公式确定所述每个天线的所述第一CE序列:0≤n″=nM+m-1<N*M,n″表示所述每个天线的所述第一CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的所述第一CE序列。
- 根据权利要求8所述的方法,其特征在于,所述根据所述第三CE序列与相移信号序列生成所述多天线中每个天线的所述第一CE序列,包括:根据所述第三CE序列和相移信号序列,确定所述每个天线的M组第二CE序列,采用串联的方式排列所述M组第二CE序列,生成所述天线每个天线的初始CE序列;根据所述初始CE序列和预设系数生成所述每个天线的所述第一CE序列。
- 根据权利要求13所述的方法,其特征在于,所述多天线的个数为K,所述根据所述第三CE序列和相移信号序列,确定所述每个天线的M组第二CE序列,包括根据以下公式确定所述M组第二CE序列:其中,m=1,2,…,M,表示所述M组第二CE序列中的第m第二CE序列的编号;N表示所述第二CE序列的个数;n=0,…,N-1,表示所述第三CE序列中字符的标号;p0(n)表示所述第三CE序列,pm(n)表示所述M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与所述第m第二CE序列对应的所述相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,所述采用串联的方式排列所述M组第二CE序列,生成所述天线每个天线的初始CE序列,包括根据以下公式确定所述初始CE序列:所述根据所述初始CE序列和预设系数生成所述每个天线的所述第一CE序列,包括根据以下公式确定所述第一CE序列:F(k,m)表示所述预设系数,n″=(m-1)M+n,0≤n″<N*M,n″表示所述每个天线的所述第一CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的所述第一CE序列。
- 一种用于无线局域网的数据传输的设备,其特征在于,包括:生成单元,用于生成第一信道估计CE序列,所述第一CE序列包括M组第二CE序列,所述第二CE序列由第三CE序列变换得到,所述第三CE序列满足802.11ad标准,所述第三CE序列包括:[-Gb128-Ga128Gb128-Ga128-Gb128Ga128-Gb128-Ga128-Gb128]或[-Gb128Ga128-Gb128-Ga128-Gb128-Ga128Gb128-Ga128–Gb128],其中M为大于或等于2的正整数;发送单元,用于向接收端设备发送物理层协议数据单元PPDU,所述PPDU包括所述第一CE序列,其中,承载所述PPDU的信道带宽为M个连续频段带宽之和,所述M组第二CE序列与所述M个连续频段一一对应。
- 根据权利要求16所述的设备,其特征在于,应用于单天线多信道的场景时,所述生成单元根据所述第三CE序列与相移信号序列,确定所述M组第二CE序列;根据所述M组第二CE序列生成所述第一CE序列。
- 根据权利要求17所述的设备,其特征在于,所述生成单元采用交织的方式排列所述M组第二CE序列,生成所述第一CE序列。
- 根据权利要求17所述的设备,其特征在于,所述生成单元采用串联的方式排列所述M组第二CE序列,生成所述第一CE序列。
- 根据权利要求17至19中任一项所述的设备,其特征在于,所述生成单元根据以下公式确定所述M组第二CE序列:其中,m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号;n=0,…,N-1,表示所述第三CE序列中字符的标号;N1为预设的优化值,0<N1≤N,其中,N表示所述第二CE序列的个数;p0(n)表示所述第三CE序列,pm(n)表示所述M组第二CE序列中的第m第二CE序列,表示与所述第m第二CE序列对应的所述相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延。
- 根据权利要求20所述的设备,其特征在于,所述生成单元根据以下公式生成所述第一CE序列:p(n′)=p(nM+m-1)=pm(n)其中,n′=nM+m-1,0≤n′<NM,0≤n<N,n′表示所述第一CE序列中的字符的标号,p(n′)表示所述第一CE序列。
- 根据权利要求20所述的设备,其特征在于,所述生成单元根据以下公式生成所述第一CE序列:p(n′)=p((m-1)N+n)=pm(n)其中,n′表示所述第一CE序列中的字符的标号,n′=(m-1)M+n,0≤n′<NM,0≤n<N,p(n′)表示所述第一CE序列。
- 根据权利要求16所述的设备,其特征在于,应用于多天线多信道的场景时,所述生成单元根据所述第三CE序列与相移信号序列,生成所述多天线中每个天线的所述第一CE序列。
- 根据权利要求23所述的设备,其特征在于,所述生成单元根据所述第三CE序列和相移信号序列,确定所述每个天线的所述M组第二CE序列,采用交织的方式排列所述M组第二CE序列,生成所述每个天线的初始CE序列;根据所述初始CE序列,采用循环移位的方式生成所述每个天线的所述第一CE序列。
- 根据权利要求24所述的设备,其特征在于,所述多天线的个数为K,所述生成单元根据以下公式确定所述M组第二CE序列:其中,m=1,2,…,M,表示所述M组第二CE序列中的第m第二CE序列的编号;N表示所述第二CE序列的个数;N1为预设的优化值,0<N1≤N;n=0,…,N-1,表示所述第三CE序列中字符的标号;p0(n)表示所述第三CE序列,pm(n)表示所述M组第二CE序列中的第m第二CE序列,表示与所述第m第二CE序列对应的所述相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,所述生成单元根据以下公式确定所述初始CE序列:所述生成单元根据以下公式确定所述每个天线的第一CE序列:0≤n″<N*M,n″表示所述每个天线的CE序列中的字符的标号,pk(n″)表示K个天线中第k天线的第一CE序列,1≤k≤K其中,a和b均为常数,a+b=N,且a>b;cεk(z)=cε(mod(z+(k-1)*b*M,a*M)),0≤z<a*M
- 根据权利要求23所述的设备,其特征在于,所述生成单元根据所述第三CE序列,采用循环移位的方式生成所述每个天线的初始CE序列;根据所述初始CE序列和相移信号,生成所述每个天线的M组第二CE序列,采用交织的方式排列所述M组第二CE序列,生成所述每个天线的所述第一CE序列。
- 根据权利要求26所述的设备,其特征在于,所述多天线的个数为K,所述生成单元根据以下公式确定所述每个天线的初始CE序列:p0(n)表示所述第三CE序列,0≤n<Nn=0,…,N-1,n表示所述第三CE序列中字符的标号;其中,a和b均为常数,a+b=N,且a>b;所述生成单元根据以下公式生成所述M组第二CE序列:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,所述生成单元根据以下公式确定所述每个天线的所述第一CE序列:其中,n″=nM+m-1,0≤n″<N*M,n″表示所述每个天线的CE序列中的字符的标号,1≤k≤K;m=1,2,…,M,表示M组第二CE序列中的第m第二CE序列的编号,pk(n″)表示K个天线中第k天线的所述第一 CE序列。
- 根据权利要求23所述的设备,其特征在于,所述生成单元根据所述第三CE序列和相移信号序列,确定所述每个天线的M组第二CE序列,采用串联的方式排列所述M组第二CE序列,生成所述天线每个天线的初始CE序列;根据所述初始CE序列和预设系数生成所述每个天线的CE序列。
- 根据权利要求28所述的设备,其特征在于,所述多天线的个数为K,所述生成单元根据以下公式确定所述M组第二CE序列:其中,m=1,2,…,M,表示所述M组第二CE序列中的第m第二CE序列的编号;N表示所述第二CE序列的个数;n=0,…,N-1,表示所述第三CE序列中字符的标号;p0(n)表示所述第三CE序列,pm(n)表示所述M组第二CE序列中的第m第二CE序列,N1为预设的优化值,0<N1≤N;表示与所述第m第二CE序列对应的所述相移信号序列,其中,当m=m1或m2时,Δm由以下公式确定:m1,m2∈{2,...,M}且m1≠m2;l1,l2∈{0,...,Ng-1}Δm表示M个信道中,信道m1与m2间信号干扰最小的取值,l1与l2分别表示信道m1与m2的时延,Ng表示传输信号由多径引起的最大时延,所述生成单元根据以下公式确定所述初始CE序列:所述生成单元根据以下公式确定所述第一CE序列:F(k,m)表示所述预设系数,0≤n″=(m-1)M+n<N*M,n″表示所述 每个天线的所述第一CE序列中的字符的标号,1≤k≤K,pk(n″)表示K个天线中第k天线的所述第一CE序列。
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