WO2013104272A1 - Procédé, système et dispositif de transmission et de réception d'informations relatives à une liaison montante - Google Patents

Procédé, système et dispositif de transmission et de réception d'informations relatives à une liaison montante Download PDF

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Publication number
WO2013104272A1
WO2013104272A1 PCT/CN2013/070040 CN2013070040W WO2013104272A1 WO 2013104272 A1 WO2013104272 A1 WO 2013104272A1 CN 2013070040 W CN2013070040 W CN 2013070040W WO 2013104272 A1 WO2013104272 A1 WO 2013104272A1
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WIPO (PCT)
Prior art keywords
uplink
subframe
fdma symbols
current
carrier
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PCT/CN2013/070040
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English (en)
Chinese (zh)
Inventor
高雪娟
林亚男
沈祖康
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Publication of WO2013104272A1 publication Critical patent/WO2013104272A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for transmitting and receiving uplink information. Background technique
  • LTE-A Release 10 Long Term Evolution-Advanced (LTE-A) Release 10 (Release-10, Rel-10) uplink only supports Intra-band Carrier Aggregation (CA), which is considered to be wireless for each carrier.
  • CA Intra-band Carrier Aggregation
  • each carrier adjusts the uplink transmission time based on the Time Advance (TA) obtained by the Random Access (RA) process on the Primary Component Carrier (PCC). That is, the uplink transmission time of multiple carriers is aligned, so the uplink transmission time on different carriers is aligned, and the uplink channel/signal in the current uplink subframe on different carriers and the previous and/or next adjacent uplink are not present. Upstream channel/signal collision in the frame.
  • TA Time Advance
  • RA Random Access
  • PCC Primary Component Carrier
  • LTE-ARel-11 CAs with different inter-band uplinks and CA deployment schemes of macro base station (Macro e B) and remote radio head (RRH) can be supported. Since the propagation characteristics of the wireless signals in different frequency bands are different, and the propagation paths of the macro base station and the RRH are different, the time when the signals transmitted by different carriers arrive at the base station is different, that is, the transmission delay is different. Therefore, in Rel-11, different carriers may use different TAs (ie, Multi-TA) for uplink transmission time adjustment, and uplink TAs of multiple carriers may not be the same. To this end, the TA group concept is introduced. The carriers with the same or similar transmission delay are grouped into one group, which is called a TA group.
  • a TA group The carriers with the same or similar transmission delay are grouped into one group, which is called a TA group.
  • the carriers belonging to the same TA group use the same uplink TA through the TA group.
  • the group of carriers includes a PCC
  • the PRACH is sent on the PCC to obtain a TA corresponding to the group of carriers, when the group of carriers is supplemented
  • the component carrier the SCO
  • 3GPP TS 36.300 specifies that for an inter-band non-contiguous carrier aggregation scenario, the downlink transmission delay difference between different downlink carriers does not exceed 30 microseconds without using a unidirectional repeater (microsecond).
  • the downlink carrier transmission time error of the base station side is up to 1.3 us. Therefore, the downlink reception time difference of each downlink carrier of the user equipment (User Equipment, UE) does not exceed 31.3 us.
  • the uplink TA of each carrier is about twice the downlink transmission delay of the carrier, the uplink TA difference of different carriers is not More than 61.3us.
  • SC-FDMA Single Carrier-Frequency Division Multiple Access
  • CP Cyclic Prefix
  • the carriers belonging to the same TA group have the same uplink TA, and the uplink transmission times of multiple carriers are aligned. Therefore, the uplink channel/signal on different carriers in the current uplink subframe does not overlap with the previous and/or the next adjacent uplink. Upstream channel/signal collision in the frame.
  • the carriers belonging to different TA groups have different uplink TAs, and the uplink transmission times of multiple carriers are not aligned. Therefore, the uplink channel/signal on different carriers in the current uplink subframe and the previous and/or next adjacent uplink subframes.
  • the uplink channel/signal in the partial SC-FDMA symbol collision considering that the difference of the uplink TA of different carriers does not exceed 1 SC-FDMA symbol, that is, the uplink channel/signal on different carriers in the current uplink subframe will be the same as the previous one.
  • the uplink channel/signal in the adjacent uplink subframe collides with the first SC-FDMA symbol, and/or the uplink channel/signal on the different carriers in the current uplink subframe and the uplink channel in the next adjacent uplink subframe
  • the /signal collides in the last SC-FDMA symbol, as shown in Figure 1A.
  • the Physical Uplink Control CHannel (PUCCH) and the Physical Uplink Shared CHannel (PUSCH) in the current uplink subframe may also be related to the sounding reference signal (SRS).
  • SRS sounding reference signal
  • the transmission is not in the last SC-FDMA collision.
  • the shortened PUCCH format (truncated PUCCH format) and the PUSCH based on the last SC-FDMA symbol transmission SRS rate matching cannot avoid the SRS and the PUCCH and PUSCH in the same uplink. Collision in the frame.
  • the PUCCH and PUSCH in the current uplink subframe may also collide with the SRS transmission in the current uplink subframe at the same time in the last two SC-FDMAs, or The PUCCH and PUSCH in the uplink subframe may also collide with the SRS transmission in the previous adjacent uplink subframe in the first SC-FDMA, as shown in FIG. 1B. Since excessive discarding of SRS will affect uplink scheduling, in multi-TA, SRS and PUCCH/PUSCH belonging to different TA groups should be supported for simultaneous transmission.
  • Rel-11 needs to support the PRACH transmission on the SCC, and it has been determined that the PRACH is not supported on multiple carriers in one uplink subframe at the same time, and the uplink of the PCC is out of synchronization, the UE is out of synchronization (requires the PC to pass the RA).
  • the uplink data transmission can exist. That is, the PUSCH on the PCC and the PUSCH/SRS on the SCC are not transmitted at the same time.
  • the collision situation of the uplink channel/signal in the same uplink subframe is shown in Table 1. .
  • the fifth last SC of the PRACH collides with the first SC-FDMA symbol of the PUCCH on carrier 1 in subframe i+i, the last 4 SC-FDMA symbols of PRACH and the PUCCH and carrier 2 on carrier 1 in subframe i+1
  • the partial SC-FDMA symbols of the PUSCH collide at the same time.
  • Table 1 Possible collision scenarios of different uplink channels/signals in the same uplink subframe Under Rel-11 multi-TA, when uplink channels/signals supporting PRACH, PUCCH, PUSCH, SRS, etc. are simultaneously transmitted in the same uplink subframe,
  • the power control method in the subframe of Rel-10 is no longer applicable, so that in Rel-11, the uplink transmission times of carriers belonging to different TA groups are not aligned, and the uplink channel on different carriers in the current uplink subframe/ The signal will collide with the partial SC-FDMA symbol with the upstream channel/signal in the previous and/or next adjacent uplink subframe.
  • the uplink transmission time misalignment of carriers belonging to different TA groups causes the uplink channel/signal to collide in part of the SC-FDMA symbol.
  • a method, a system, and a device for transmitting and receiving uplink information provided by the embodiments of the present invention are used to solve the problem that the carriers belonging to different TA groups are not aligned due to uplink transmission time in the Rel-11 existing in the prior art.
  • a user equipment having multiple uplink timing advance TAs determining that the uplink carrier reserves K single-carrier frequency division multiple access in the current uplink subframe, and does not transmit uplink information, where K is a non-negative integer;
  • the user equipment maps the uplink information to be transmitted to the uplink carrier, and transmits the SC-FDMA symbol for transmitting uplink information except the K SC-FDMA symbols in the current uplink subframe.
  • the network side device determines that the uplink carrier reserves K SC-FDMA symbols in the current uplink subframe, and does not transmit uplink information, where K is a non-negative integer;
  • the network side device receives the uplink information transmitted by the user equipment with multiple uplink TAs in the current uplink subframe by using the SC-FDMA symbol other than the SC-FDMA symbol that does not transmit the uplink information.
  • a user equipment for transmitting uplink information which is provided by the embodiment of the present invention, includes:
  • a first determining module configured to: when there are multiple uplink TAs, determine that the uplink carrier reserves K in the current uplink subframe
  • the SC-FDMA symbol does not transmit uplink information, where K is a non-negative integer
  • a network side device for receiving uplink information which is provided by the embodiment of the present invention, includes:
  • a second determining module configured to determine that the uplink carrier reserves K SC-FDMA symbols in the current uplink subframe, and does not transmit uplink information, where K is a non-negative integer;
  • a receiving module configured to receive uplink information sent by the user equipment that has multiple uplink TAs by using an SC-FDMA symbol other than the SC-FDMA symbol that does not transmit uplink information in the current uplink subframe by using the uplink carrier.
  • the uplink carrier reserves K uplink symbols in the current uplink subframe, does not transmit uplink information, and maps the uplink information to be transmitted to the uplink carrier in the current uplink subframe. Transmitting on an SC-FDMA symbol for transmitting uplink information other than the K SC-FDMA symbols, where K is a non-negative integer;
  • the network side device is configured to determine that the uplink carrier reserves K uplink symbols in the current uplink subframe, does not transmit uplink information, and uses the uplink carrier to save the uplink information in the current uplink subframe except for the SC-FDMA symbol that does not transmit the uplink information.
  • the SC-FDMA symbol receives the uplink information transmitted by the user equipment having multiple uplink TAs.
  • the uplink carrier reserves K uplink symbols in the current uplink subframe, the uplink information is not transmitted, thereby avoiding the Rel-11, the carriers belonging to different TA groups are in the adjacent subframes caused by the uplink transmission time misalignment.
  • the upstream channel/signal collides in a portion of the SC-FDMA symbol.
  • 1A is a schematic diagram of simultaneous transmission under the first Multi-TA in the background art
  • 1B is a schematic diagram of simultaneous transmission under a second Multi-TA in the background art
  • 1C is a schematic diagram of simultaneous transmission under the second Multi-TA in the background art
  • FIG. 2 is a schematic structural diagram of a system for transmitting uplink information according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for transmitting uplink information according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a method for receiving uplink information according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a first transmission according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a second transmission according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a third transmission according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a fourth transmission according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a fifth transmission according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a sixth transmission according to an embodiment of the present invention.
  • 13A is a schematic diagram of a seventh transmission according to an embodiment of the present invention
  • 13B is a schematic diagram of an eighth transmission according to an embodiment of the present invention
  • FIG. 13C is a schematic diagram of a ninth transmission according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention has a plurality of user equipments of the uplink TA, and determines that the uplink carrier reserves K uplink symbols in the current uplink subframe, does not transmit uplink information, and maps the uplink information to be transmitted to the uplink carrier in the current uplink.
  • the transmission is performed on SC-FDMA symbols for transmitting uplink information except for K SC-FDMA symbols.
  • the uplink subframe is reserved for the K-FDMA symbols in the current uplink subframe, and the uplink information is not transmitted, thereby avoiding adjacent subframes in the Rel-11, the carriers belonging to different TA groups are not aligned due to the uplink transmission time.
  • the upstream channel/signal in the collision occurs in the partial SC-FDMA symbol.
  • the system for transmitting uplink information in the embodiment of the present invention includes: a user equipment 10 and a network side device 20.
  • the user equipment 10 with multiple uplink TAs is configured to determine that the uplink carrier reserves K uplink symbols in the current uplink subframe, does not transmit uplink information, and maps the uplink information to be transmitted to the uplink carrier in the current uplink subframe.
  • the transmission is performed on SC-FDMA symbols other than K SC-FDMA symbols for transmitting uplink information, where K is a non-negative integer.
  • SC-FDMA symbols for transmitting uplink information except for the K SC-FDMA symbols are: in the SC-FDMA symbol included in the uplink channel in one uplink subframe, except for the reserved K SC-FDMA symbols, SC-FDMA symbols for transmitting Reference Signals (RS), and SC-FDMA symbols reserved for SRS transmission when there is an SRS transmission or when the current subframe is a system SRS subframe SC-FDMA symbol.
  • RS Reference Signals
  • the network side device 20 is configured to determine that the uplink carrier reserves K uplink symbols in the current uplink subframe, and does not transmit uplink information, and the uplink carrier does not transmit the uplink information in the current uplink subframe except the SC-FDMA symbol.
  • the other SC-FDMA symbols receive the uplink information transmitted by the user equipment 10 having a plurality of uplink TAs.
  • the uplink information of the embodiment of the present invention includes but is not limited to at least one of the following information:
  • CSI includes channel quality indicator (CQI), pre-coding matrix indicator (PMI), rank indicator ( Rank) Indication, RI), Precoding Type Indicator (PTI) and other information.
  • CQI channel quality indicator
  • PMI pre-coding matrix indicator
  • Rank rank indicator
  • PTI Precoding Type Indicator
  • the uplink information transmitted on the PUCCH refers to: one or more combinations of ACK/NACK, periodic CSI, and SR; the uplink information transmitted on the PUSCH refers to: uplink data or uplink data and ACK/NACK, periodic/non- One or more combinations of periodic CSIs; SRS is an uplink signal that occupies only one SC-FDMA symbol transmission in one uplink subframe.
  • the network side device 20 directly configures K SC-FDMA symbols for the user equipment by using high-level signaling or physical downlink control channel (PDCCH) signaling;
  • PDCCH physical downlink control channel
  • the user equipment 10 directly determines K SC-FDMA symbols according to the configuration of the high layer signaling or the PDCCH signaling.
  • the high layer signaling is Radio Resource Control (RRC) signaling or Medium Access Control (MAC) signaling.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the second mode, the user equipment 10 and the network side device 20 pre-arrange K K-FDMA symbols;
  • the user equipment 10 and the network side device 20 determine K SC-FDMA symbols according to the prior agreement with the other party, respectively.
  • the network side device 20 notifies the K SC-FDMA symbols to the user equipment in advance through the high layer signaling or the PDCCH signaling, and further configures whether the user equipment 10 reserves K in the current uplink subframe by using a specific bit field in the PDCCH signaling. SC-FDMA symbols.
  • the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe (including but not limited to a PDCCH carrying a DL grant (downlink scheduling grant) and/or indicating a downlink semi-persistent scheduling (Semi-Persistent) Scheduling, SPS) PDCCH of resource release, and/or PDCCH corresponding to PUSCH in the current uplink subframe.
  • the user equipment 10 determines, according to a specific bit field in the PDCCH signaling, whether there is a reserved in the current uplink subframe.
  • the SC-FDMA symbol when it is determined to exist, further determines that the K SC-FDMA symbols pre-configured by the high layer signaling or the PDCCH signaling are the reserved K SC-FDMA symbols, and when the determination does not exist, determine the current uplink subframe. There is no reserved SC-FDMA symbol, wherein the PDCCH is defined as the above network side.
  • the original 1 bit is reused or a new 1 bit is added as the indication information of whether there is a reserved SC-FDMA symbol.
  • different uplink carriers correspond in the same uplink subframe.
  • the Ks are the same or different; the same uplink carrier is the same or different in the corresponding uplink subframes.
  • the two SC-FDMA symbols are the first SC-FDMA symbols in the current uplink subframe;
  • SC one SC-FDMA symbol is the last K SC-FDMA symbols in the current uplink subframe.
  • K SC-FDMA symbols are the first K1 SC-FDMA symbols and the last K2 in the current uplink subframe
  • the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or the SRS is transmitted in the first SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are The last K SC-FDMA symbols in the current uplink subframe; specifically, if the SRS is transmitted in the last SC-FDMA symbol in the current uplink subframe, the K SC-FDMA symbols are in the current uplink subframe.
  • the first K SC-FDMA symbols; if the SRS is transmitted in the first SC-FDMA symbol in the current uplink subframe, the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.
  • the SRS is the last SC-FDMA symbol transmission in the current uplink subframe; if the K SC-FDMA symbols are the current uplink subframes The last K SC-FDMA symbols in the frame, then the first SC-FDMA symbol transmission of the SRS in the current uplink subframe.
  • the user equipment 10 determines that only the uplink carrier except the uplink carrier with the smallest uplink TA is in one uplink subframe. Reserving K SC-FDMA symbols, correspondingly, the network side device 20 determines to reserve K SC-FDMA symbols in one uplink subframe only for uplink carriers other than the uplink carrier with the smallest uplink TA; or the user equipment 10 Determining that the uplink carrier with the smallest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe, and correspondingly, the network side device 20 determines that the uplink carrier with the smallest uplink TA does not need to be reserved in one uplink subframe. SC-FDMA symbol.
  • the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, for one uplink carrier, if the uplink TA is smaller than the other uplink carriers of the uplink carrier, the previous one of the current uplink subframes
  • the uplink information is not transmitted on the last K SC-FDMA symbols in the adjacent uplink subframe, and the user equipment 10 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe; correspondingly, the network side
  • the device 20 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.
  • the user equipment 10 determines that only the uplink carrier except the uplink carrier with the largest uplink TA is in one uplink subframe. Reserving K SC-FDMA symbols, correspondingly, the network side device 20 determines to reserve K SC-FDMA symbols in one uplink subframe only for uplink carriers other than the uplink carrier having the largest uplink TA; or the user equipment 10 Determining that the uplink carrier with the largest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe; correspondingly, the network side device 20 determines that the uplink carrier with the largest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe.
  • the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, for one uplink carrier, if the uplink TA is greater than the other uplink carriers of the uplink carrier, the latter one of the current uplink subframes.
  • the uplink information is not transmitted on the first K SC-FDMA symbols in the adjacent uplink subframe, and the user equipment 10 determines that the K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe; correspondingly, the network side
  • the device 20 determines that the K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.
  • ⁇ is generally the difference between the uplink transmission timing advances of different TA groups (if there are more than three TA groups, two or two differences are needed. For one carrier, if there are 2 differences, the maximum value is determined.
  • the user equipment 10 performs time-domain orthogonal spreading by using SC-FDMA symbols for transmitting uplink information in addition to the reserved SC-FDMA symbols in one uplink subframe.
  • the transmission format transmits uplink information.
  • the network side device 20 performs time domain positive based on other SC-FDMA symbols for transmitting uplink information except for the reserved K SC-FDMA symbols in one uplink subframe.
  • the transport format of the interleaved spread spectrum receives the uplink information; or, for PUSCH transmission, the user equipment 10 uses other SCs for transmitting uplink information except for the reserved K SC-FDMA symbols in one uplink subframe.
  • the FDMA symbol performs rate matching to transmit uplink information; correspondingly, the network side device 20 uses the SC-FDMA symbol for transmitting uplink information except for the reserved K SC-FDMA symbols in one uplink subframe. Rate matching receives uplink information.
  • the user equipment 10 transmits the uplink information in the PUCCH using the shortened PUCCH format (for example, shortened) PUCCH format l/la/lb/3, of course, if the shortened format is also defined for format 2/2a/2b, the newly defined shortened PUCCH format 2/2a/2b is not excluded; correspondingly, the network side device 20 is at PUCCH.
  • the shortened PUCCH format for example, shortened
  • the shortened format is also defined for format 2/2a/2b
  • the newly defined shortened PUCCH format 2/2a/2b is not excluded; correspondingly, the network side device 20 is at PUCCH.
  • the uplink information is received by using the shortened PUCCH format; or, for the PUSCH transmission, the user equipment 10 performs rate matching transmission uplink information on the PUSCH based on the last SC-FDMA symbol reserved for transmission (ie, reuses Rel-8/9/10)
  • the transmission mode of the PUSCH transmitted in the system SRS subframe, the last SC-FDMA symbol reservation on the PUSCH is used for transmitting the SRS, and the remaining SC-FDMA symbols (except the pilot symbols) can be used for transmitting uplink data and/or uplink control.
  • the network side device 20 reserves the SRS based on the last SC-FDMA symbol reservation on the PUSCH. Receives uplink information.
  • the user equipment 10 determines that no uplink information is transmitted in the current uplink subframe on the uplink carrier except the uplink carrier where the PRACH is located.
  • the network side device 20 determines that no uplink information is transmitted in the current uplink subframe on the uplink carrier except the uplink carrier where the PRACH is located; or the user equipment 10 only has the last uplink carrier except the uplink carrier where the PRACH is located.
  • An SC-FDMA ie, the last SC-FDMA symbol capable of transmitting upstream information, The SRS is transmitted in the same symbol.
  • the network side device 20 receives the SRS only in the last SC-FDMA symbol of the uplink carrier except the uplink carrier where the PRACH is located.
  • the FDMA symbol overlaps with a persistently transmitted PRACH.
  • the PRACH does not necessarily start transmission in the current uplink subframe, and may start transmission in the previous one or more uplink subframes of the current uplink subframe, and continues for multiple uplink subframes. You can use one of the following processing methods:
  • Mode A The user equipment 10 determines that no uplink information is transmitted in the current uplink subframe on the uplink carrier except the uplink carrier where the PRACH is located.
  • the network side device 20 determines that the uplink carrier is other than the uplink carrier where the PRACH is located. No uplink information is received in the current uplink subframe;
  • Mode C The user equipment 10 performs power control on the uplink channel/signal in the current uplink subframe based on the transmit power of the PRACH, and transmits the uplink channel/signal in the current uplink subframe according to the power controllized transmit power, correspondingly, the network
  • the side device 20 determines to receive uplink information on all uplink carriers in the current uplink subframe.
  • the uplink channel/signal that may overlap with the PRACH includes at least one or more of PUCCH, PUSCH, and SRS.
  • the foregoing manners A and B correspond to the case where the PRACH and other uplink channels/signals are not simultaneously transmitted.
  • the uplink channel/signal without any reserved SC-FDMA symbols still overlaps with the PRACH on all or part of the SC-FDMA symbols, and the network side device 20 can be restricted by scheduling, or pre-configured or agreed to K for these carriers.
  • the user equipment 10 can normally transmit the uplink channel/signal in the current uplink subframe, for example, transmit the SRS in the last SC-FDMA symbol (ie, configure the current uplink subframe as an SRS subframe).
  • the network side device 10 can receive the uplink channel/signal on the corresponding carrier.
  • the above manner C corresponds to the case where the PRACH and other uplink channels/signals are simultaneously transmitted.
  • the user equipment 10 performs power control on the uplink channel/signal in the current uplink subframe based on the transmit power of the PRACH, that is, if the total transmit power of the UE in the current uplink subframe exceeds the preset maximum transmit power, in the current uplink subframe.
  • the transmit power of the PRACH is required, regardless of whether the PRACH is transmitted in the current uplink subframe (that is, the PRACH is also transmitted in the previous one or more uplink subframes, but due to If the value of the uplink channel/signal on the uplink carrier other than the uplink carrier of the PRACH is overlapped, If the channel priority of the PRACH is the highest, when the power channel is upgraded for the uplink channel/signal in the current uplink subframe, the remaining available transmit power after the PRACH transmit power is subtracted based on the preset maximum transmit power (linear region) : P emax -P P R ACH ), that is, in order of channel/signal priority from low to high, first to low priority The upstream channel/signal is scaled down until the total transmit power of the UE does not exceed the remaining available transmit power.
  • the user equipment 10 determines that the uplink carrier other than the uplink carrier having the largest uplink TA is further reserved after the uplink channel in the current uplink subframe, and the two SC-FDMA symbols are not
  • the uplink information is further transmitted (that is, further reserved on the basis of the reserved K SC-FDMA symbols); correspondingly, the network side device 20 determines the uplink of the uplink carrier in the current uplink subframe except the uplink carrier having the largest uplink TA.
  • the two SC-FDMA symbols do not transmit uplink information (ie, further reserved based on the reserved K SC-FDMA symbols).
  • the uplink channel includes at least one of PUCCH,
  • the uplink carrier other than the uplink carrier with the largest uplink transmission timing advance in the current uplink subframe may be further configured or agreed.
  • the last 2 SC-FDMA symbols of the uplink channel are vacant and do not transmit any uplink channel bearer information (such as UCI and uplink data).
  • the SRS can be transmitted in the last SC-FDMA symbol to avoid SRS and other carriers with different TAs. Upstream channel collision on.
  • the first SC-FDMA symbol in the current uplink subframe ie, the first one capable of transmitting uplink information
  • SC-FDMA symbol the same as the first SC-FDMA symbol transmission in which the SRS transmission is present or the current uplink subframe is an SRS transmission subframe and the SRS is in one uplink subframe, and the user equipment 10 determines the uplink except the minimum uplink TA.
  • the uplink carrier other than the carrier further reserves the first two SC-FDMA symbols in the uplink channel in the current uplink subframe, and does not transmit the uplink information (that is, further reserved on the basis of the reserved K SC-FDMA symbols); correspondingly,
  • the network side device 20 determines that the uplink carrier other than the uplink carrier with the smallest uplink TA further reserves the uplink information in the first two SC-FDMA symbols in the uplink channel in the current uplink subframe (that is, reserves K SC-FDMA). Further reservation based on the symbol).
  • the uplink channel includes at least one of PUCCH, PUSCH, and PRACH.
  • SRS can be transmitted in the first SC-FDMA symbol to avoid collision of SRS with uplink channels on other carriers with different TAs.
  • the user equipment 10 transmits only the SRSs of the uplink carriers having the same uplink TA in the same uplink subframe.
  • the network side device 20 only receives the uplink carriers with the same uplink TA in the same uplink subframe.
  • SRS SRS. That is, the network side device 20 may be configured in one uplink subframe, and only the carrier with the same TA transmits the SRS, and the SRSs of the carriers with different TAs are transmitted in different uplink subframes to avoid multiple carriers caused by multiple TAs.
  • the upper SRS is not aligned in one uplink subframe, resulting in more complicated power control.
  • the user equipment 10 maps the uplink information to be transmitted to the uplink carrier on the SC-FDMA symbol except the K SC-FDMA symbols on the uplink channel in the current uplink subframe, and further includes the user equipment 10
  • the actual transmit power of each upstream channel/signal is determined as follows, and each upstream channel/signal is transmitted according to the power:
  • the user equipment determines the sum of the target transmit power of the uplink channel transmitted in the current uplink subframe (ie, the transmit power of the uplink channel on each carrier calculated based on the correlation power control parameter of each carrier and the uplink channel on the carrier) Whether the preset maximum transmission power is exceeded;
  • the target transmission power of the uplink channel having the same uplink channel/signal priority transmitted in the current uplink subframe is gradually reduced in proportion according to the order of the uplink channel/signal priority from low to high (ie, First, the transmit power of the uplink channel with the lowest priority is reduced.
  • the power is reduced to 0, the total transmit power of the UE exceeds the preset maximum transmit power, and the transmit power of the lower priority uplink channel is further reduced, and so on.
  • the sum of the transmit powers of the uplink channels transmitted in the current uplink subframe does not exceed the preset maximum transmit power, and the transmit power after the power reduction is used as the actual transmit power of the uplink channel; Performing a high-priority uplink channel with reduced power, and using its target transmit power as its actual transmit power;
  • the target transmit power of each upstream channel is taken as its actual transmit power.
  • SRS transmission there may be one or more):
  • the user equipment 10 determines whether the sum of the target transmit powers of the uplink channels transmitted in the current uplink subframe exceeds a preset maximum transmit power
  • the target transmission power of the uplink channel having the same uplink channel/signal priority transmitted in the current uplink subframe is gradually reduced in proportion according to the order of the uplink channel/signal priority from low to high, to After the power reduction is satisfied, the sum of the transmit powers of the uplink channels transmitted in the current uplink subframe does not exceed the preset maximum transmit power. Rate, and the power of the reduced power is taken as the actual transmit power of the uplink channel; for the high priority uplink channel without power reduction, the target transmit power is taken as its actual transmit power;
  • the target transmit power of each uplink channel is taken as its actual transmit power
  • the user equipment 10 determines the target transmit power of the SRS in the current uplink subframe and the actual transmit of the uplink channel on the uplink carrier except the uplink carrier where the SRS is located, that is, the uplink channel that overlaps with the SRS in the current uplink subframe. Whether the sum of the power (that is, the transmit power determined after the power control process for the uplink channel described above) exceeds a preset maximum transmit power;
  • the target transmit power of the SRS transmitted in the current uplink subframe is subjected to equal power reduction (where the periodic SRS and the aperiodic SRS can be further distinguished, and the priority of the aperiodic SRS is higher than the periodic SRS, that is, the priority guarantee is non-
  • the transmit power of the periodic SRS is not reduced.
  • the sum of the transmit powers of the SRSs transmitted in the current uplink subframe does not exceed the preset maximum transmit power minus the uplink carrier except the uplink carrier where the SRS is located.
  • the actual transmit power of the uplink channel, and the transmit power after the power reduction is taken as the actual transmit power of the SRS; when not exceeded, the target transmit power of each SRS is taken as its actual transmit power;
  • the uplink channel/signal priority may be at least one of the following definitions:
  • PUCCH>PUSCH carrying UCI>PUSCH SRS not carrying UCI;
  • the uplink channel/signal priority may be at least one of the following definitions:
  • PUCCH>PRACH> PUSCH carrying UCI> PUSCH SRS not carrying UCI.
  • the SRS includes an aperiodic SRS (Aperiodic-SRS) and a periodic SRS (Responsive SRS), and the aperiodic SRS priority may be higher than or equal to the periodic SRS; the aperiodic SRS priority may also be higher than or equal to the PUSCH not carrying the UCI. ;
  • the preset maximum transmit power may be the maximum transmit power allowed by the user equipment 10, and/or the maximum transmit power allowed in each frequency band; if the uplink channel/signal in the current uplink subframe overlaps with the PRACH, If the priority of the PRACH is high (the priority of the transmit power is not required to be reduced), then all uplink channels/signals in the current uplink subframe or uplink channels/signals overlapping with the PRACH in the current uplink subframe are present according to the foregoing.
  • the SRS and the method in the absence of SRS transmission perform power control, and the preset maximum transmit power used may also be the maximum transmit power allowed by the user equipment 10 or the maximum transmit power allowed by the frequency band minus the transmit power of the PRACH.
  • the Rel-10 power control method is reused in the current uplink subframe as much as possible to determine the transmit power of each uplink channel/signal, the standardization complexity is ensured, and the user equipment is guaranteed to work normally.
  • the SRS is in the uplink carrier of the last SC-FDMA symbol transmission, and the K vacant SC-FDMA symbols are the first K symbols in the current uplink subframe, and at the same time, in order to avoid introducing new due to SC-FDMA symbol vacancy
  • the carrier with the smallest TA should be selected as the uplink primary component carrier.
  • the SRS is in the uplink carrier of the first SC-FDMA symbol transmission, and the K vacant SC-FDMA symbols are the last K symbols in the current uplink subframe, and at the same time, in order to avoid preserving excessive SC-FDMA symbols. Affecting PUCCH transmission, and avoiding introducing a new PUCCH format definition in a non-SRS subframe, the carrier with the largest TA should be selected as the uplink primary component carrier.
  • the foregoing uplink channel/signal includes but is not limited to the uplink channel PUCCH, PUSCH, PRACH, and the uplink signal SRS, etc.; wherein the meaning of the above “uplink channel/signal” means: only the uplink channel exists, or only the uplink signal exists, or the uplink channel and The upstream signals are present at the same time.
  • the uplink information includes uplink control information and uplink data; the uplink control information includes ACK/NACK, periodic/aperiodic CSI, and SR; and the CSI includes CQI information, PMI information, RI information, and PTI information.
  • the above method is applicable to both intra-band and inter-band CA; and is applicable to both Frequency Division Duplex (FDD) and Time Division Duplex (TDD) systems.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the network side device in the embodiment of the present invention may be a station (such as a macro base station, a home base station, etc.), a relay node (RN) device, or other network side devices.
  • a station such as a macro base station, a home base station, etc.
  • RN relay node
  • the user equipment in the system for transmitting uplink information in the embodiment of the present invention includes: a first determining module 300 and a transmitting module 310.
  • the first determining module 300 is configured to: when there are multiple uplinks, determine that the uplink carrier reserves, in the current uplink subframe, that the SC-FDMA symbols do not transmit uplink information, where K is a non-negative integer;
  • the transmitting module 310 is configured to map the uplink information to be transmitted to the uplink carrier, and transmit the SC-FDMA symbol for transmitting uplink information except the K SC-FDMA symbols in the current uplink subframe.
  • the first determining module 300 determines K SC-FDMA symbols according to the configuration of the high layer signaling or the PDCCH signaling; or determines K SC-FDMA symbols according to a pre-arrangement with the network side device; or according to the PDCCH letter
  • the specific bit field in the command determines whether there is a reserved SC-FDMA symbol in the current uplink subframe, and when it is determined to exist, determines that the K-SC-FDMA symbols pre-configured by the high-layer signaling or the PDCCH signaling are K SC-FDMA symbols.
  • the PDCCH is corresponding to The PDCCH in the downlink subframe in which the ACK/NACK feedback is performed in the current uplink subframe, and/or the PDCCH corresponding to the PUSCH in the current uplink subframe.
  • the higher layer signaling is RRC signaling or MAC signaling.
  • the corresponding uplinks of the different uplink carriers are the same or different in the same uplink subframe; the K corresponding to the different uplink carriers in the different uplink subframes are the same or different.
  • the K SC-FDMA symbols determined by the first determining module 300 are the first K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols determined by the first determining module 300 are the current uplink subframe.
  • the first determining module 300 determines the last SC-FDMA symbol transmission of the SRS in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or
  • the first determining module 300 determines the first SC-FDMA symbol transmission of the SRS in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.
  • the first determining module 300 determines that only the uplink carrier except the uplink carrier with the smallest uplink TA is in one uplink. K SC-FDMA symbols are reserved in the frame, or it is determined that the uplink carrier with the smallest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe.
  • the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, for one uplink carrier, if the uplink TA is smaller than the uplink carrier, the other uplink carriers are in the previous phase of the current uplink subframe.
  • the uplink information is not transmitted on the last K SC-FDMA symbols in the adjacent uplink subframe, and the first determining module 300 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.
  • the first determining module 300 determines that only the uplink carrier except the uplink carrier with the largest uplink TA is in one uplink.
  • the K SC-FDMA symbols are reserved in the frame, or it is determined that the uplink carrier with the largest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe.
  • the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, for one uplink carrier, if the uplink TA is greater than the uplink carrier, the other uplink carriers are in the next phase of the current uplink subframe.
  • the uplink information is not transmitted on the first K SC-FDMA symbols in the adjacent uplink subframe, and the first determining module 300 determines that the K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.
  • the transmission module 310 performs a time-domain orthogonal spreading transmission format for the PUCCH transmission by using SC-FDMA symbols for transmitting uplink information in addition to K SC-FDMA symbols in one uplink subframe. Transmitting uplink information; or, for PUSCH transmission, performing rate matching transmission uplink information based on SC-FDMA symbols for transmitting uplink information except for K SC-FDMA symbols in one uplink subframe.
  • the transmission module 310 is for! >1;. . 11 transmission, using shortened PUCCH format to transmit uplink information; or, for PUSCH transmission, based on the last SC-FDMA symbol reservation for SRS transmission for rate matching transmission uplink information.
  • the first determining module 300 determines that the uplink carrier is other than the uplink carrier where the PRACH is located.
  • No uplink information is transmitted in the current uplink subframe; or for an uplink carrier other than the uplink carrier where the PRACH is located, if the uplink channel is reserved for K SC-FDMA symbols on the uplink carrier in the current uplink subframe/ The signal still overlaps with the PRACH on all or part of the SC-FDMA symbol, determining that the uplink carrier does not transmit any uplink information in the current uplink subframe; or powering the uplink channel/signal in the current uplink subframe based on the transmit power of the PRACH. Controlling, and transmitting the uplink channel/signal in the current uplink subframe according to the power consumption after the power control;
  • the uplink channel/signal includes at least one or more of PUCCH, PUSCH, and SRS.
  • the first determination is performed.
  • the module 300 determines that the uplink carrier other than the uplink carrier having the largest uplink TA does not transmit uplink information after the uplink channel in the current uplink subframe is further reserved.
  • a determining module 300 determines that the uplink carrier other than the uplink carrier with the smallest uplink TA further reserves the uplink information in the first two SC-FDMA symbols in the uplink channel in the current uplink subframe;
  • the uplink channel includes at least one of PUCCH, PUSCH, and PRACH.
  • the transmission module 310 transmits only the uplink carrier with the same uplink TA in the same uplink subframe.
  • the network side device in the system for transmitting uplink information in the embodiment of the present invention includes: a second determining module
  • the second determining module 400 is configured to determine that the uplink carrier reserves K SC-FDMA symbols in the current uplink subframe, and does not transmit uplink information, where K is a non-negative integer;
  • the receiving module 410 is configured to receive, by using an uplink carrier, uplink information sent by the user equipment that has multiple uplink TAs in other SC-FDMA symbols except the SC-FDMA symbol that does not transmit uplink information in the current uplink subframe.
  • the second determining module 400 configures K SC-FDMA symbols for the user equipment by using high layer signaling or PDCCH signaling; or notifying K SC-FDMA symbols by means of a pre-agreed with the user equipment; or by using a high-level letter Let the PDCCH signaling notify the user equipment in advance of the K SC-FDMA symbols, and pass the PDCCH.
  • the specific bit field in the signaling configures whether the user equipment reserves K SC-FDMA symbols in the current uplink subframe, where the PDCCH is a PDCCH in a downlink subframe corresponding to ACK/NACK feedback in the current uplink subframe, and / or PDCCH corresponding to the PUSCH in the current uplink subframe.
  • the higher layer signaling is RRC signaling or MAC signaling.
  • the corresponding uplinks of the different uplink carriers are the same or different in the same uplink subframe; the K corresponding to the different uplink carriers in the different uplink subframes are the same or different.
  • the K SC-FDMA symbols determined by the second determining module 400 are the first K SC-FDMA symbols in the current uplink subframe; or the K SC-FDMA symbols determined by the second determining module 400 are the current uplink subframe.
  • the second determining module 400 determines the last SC-FDMA symbol transmission of the SRS in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or The second determining module 400 determines the first SC-FDMA symbol transmission of the SRS in the current uplink subframe, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.
  • the second determining module 400 determines that only the uplink carrier except the uplink carrier with the smallest uplink TA is in one uplink.
  • K SC-FDMA symbols are reserved in the frame, or it is determined that the uplink carrier with the smallest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe.
  • the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe, for one uplink carrier, if the uplink TA is smaller than the uplink carrier, the other uplink carriers are in the previous phase of the current uplink subframe.
  • the uplink information is not transmitted on the last K SC-FDMA symbols in the adjacent uplink subframe, and the second determining module 400 determines that the first K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.
  • the second determining module 400 determines that only the uplink carrier other than the uplink carrier having the largest uplink TA is in one uplink.
  • the K SC-FDMA symbols are reserved in the frame, or it is determined that the uplink carrier with the largest uplink TA does not need to reserve SC-FDMA symbols in one uplink subframe.
  • the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe, for one uplink carrier, if the uplink TA is greater than the uplink carrier, the other uplink carriers are in the next phase of the current uplink subframe.
  • the uplink information is not transmitted on the first K SC-FDMA symbols in the adjacent uplink subframe, and the second determining module 400 determines that the K SC-FDMA symbols are not reserved for the uplink carrier in the current uplink subframe.
  • the receiving module 410 performs time-domain orthogonal despreading transmission on the PUCCH transmission by using SC-FDMA symbols for transmitting uplink information in addition to K SC-FDMA symbols in one uplink subframe.
  • the format receives uplink information; or, for PUSCH transmission, is based on the division of K SC-FDMA symbols in one uplink subframe.
  • Other SC-FDMA symbols for transmitting uplink information perform de-rate matching to receive uplink information.
  • the receiving module 410 receives the uplink information by using the shortened PUCCH format for the PUCCH transmission; or, for the PUSCH Transmission, based on the last SC-FDMA symbol reservation for transmitting SRS for de-rate matching reception uplink information.
  • the second determining module 400 determines the uplink carrier except the PRACH.
  • the uplink carrier does not transmit any uplink information in the current uplink subframe; or the uplink carrier other than the uplink carrier where the PRACH is located, if K SC-FDMA symbols are reserved on the uplink carrier in the current uplink subframe
  • the uplink channel/signal still overlaps with the PRACH on all or part of the SC-FDMA symbol, and determines that the uplink carrier does not receive any uplink data in the current uplink subframe; or determines that each uplink carrier in the current uplink subframe receives the uplink.
  • the uplink channel/signal includes at least one or more of PUCCH, PUSCH, and SRS.
  • the second determination The module 400 determines that the uplink carrier other than the uplink carrier having the largest uplink TA does not transmit uplink information after the uplink channel in the current uplink subframe is further reserved; or, if the current uplink subframe is in the first
  • the SC-FDMA symbol has an SRS transmission or the current uplink subframe is an SRS transmission subframe and the SRS is transmitted in the first SC-FDMA symbol in one uplink subframe
  • the second determining module 400 determines the uplink carrier except the smallest uplink TA.
  • the uplink carrier other than the uplink channel in the current uplink subframe further reserves the first two SC-FDMA symbols without transmitting uplink information;
  • the uplink channel includes at least one of PUCCH, PUSCH, and PRACH.
  • the receiving module 410 receives only the SRS of the uplink carrier with the same uplink TA in the same uplink subframe.
  • the method for transmitting uplink information and receiving uplink information is also provided in the embodiment of the present invention.
  • the methods for solving the problem are similar to the user equipment and the network side device in the system for transmitting uplink information, respectively.
  • the implementation can be seen in the implementation of the system, and the repetition will not be repeated.
  • the method for transmitting uplink information in the embodiment of the present invention includes the following steps:
  • Step 501 A user equipment with multiple uplink TAs, determining that the uplink carrier reserves K single-carrier frequency division multiple access in the current uplink subframe.
  • the SC-FDMA symbol does not transmit uplink information, where K is a non-negative integer;
  • Step 502 The user equipment maps the uplink information to be transmitted to the uplink carrier, and performs transmission on the SC-FDMA symbol for transmitting uplink information except the K SC-FDMA symbols in the current uplink subframe.
  • the symbol is: in the SC-FDMA symbol included in the uplink channel in an uplink subframe, except for the reserved K SC-FDMA symbols, the SC-FDMA symbol used to transmit the pilot RS, and when there is SRS transmission or current
  • the SC-FDMA symbol other than the SC-FDMA symbol reserved for SRS transmission when the subframe is a system SRS subframe.
  • the user equipment directly determines K SC-FDMA symbols according to the configuration of the high layer signaling or the PDCCH signaling; or the user equipment determines K SC-FDMA symbols according to a pre-arrangement with the network side device; or The user equipment determines whether there is a reserved SC-FDMA symbol in the current uplink subframe according to the specific bit field in the PDCCH signaling, and further determines the K SC-FDMA symbols pre-configured by the high layer signaling or the PDCCH signaling when the presence is determined.
  • the SC-FDMA symbol with no reservation in the current uplink subframe is determined, where the PDCCH is a positive acknowledgement ACK/negative acknowledgement NACK in the current uplink subframe.
  • the high layer signaling is radio resource control RRC signaling or medium access control MAC signaling.
  • each TA group corresponds to one reserved SC-FDMA symbol set, and each carrier belonging to the TA group is in each uplink subframe.
  • the reserved SC-FDMA symbols in the set are some or all of the SC-FDMA symbols in the set, which are selected by signaling or by an agreed manner.
  • different uplink carriers are the same or different in the corresponding uplink subframes
  • the same uplink carrier is the same or different in K corresponding to different uplink subframes.
  • the SRS is transmitted in the last SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or the SRS is in the current uplink subframe.
  • the first SC-FDMA symbol is transmitted, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.
  • the user equipment determines K SC-FDMA symbols, and further includes:
  • the user equipment determines to reserve K SC-FDMA symbols in only one uplink subframe for the uplink carrier except the uplink carrier with the smallest uplink TA, or the user equipment determines that the uplink carrier with the smallest uplink TA is in one uplink subframe. There is no need to reserve SC-FDMA symbols.
  • the user equipment determines K SC-FDMA symbols, and further includes:
  • the uplink information is not transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, and the user equipment determines that the uplink information is currently available.
  • the first K SC-FDMA symbols are not reserved for the uplink carrier in the uplink subframe.
  • the user equipment determines K SC-FDMA symbols, and further includes:
  • the user equipment determines that only K SC-FDMA symbols are reserved in one uplink subframe for the uplink carrier except the uplink carrier with the largest uplink TA, or the user equipment determines that the uplink carrier with the largest uplink TA is in one uplink subframe. There is no need to reserve SC-FDMA symbols.
  • the user equipment determines K SC-FDMA symbols, and further includes:
  • the uplink information is not transmitted on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe, and the user equipment determines the current uplink subframe.
  • the K SC-FDMA symbols are not reserved for the uplink carrier in the frame.
  • the user equipment maps the uplink information to be transmitted to the uplink carrier, and transmits the uplink information on the SC-FDMA symbol for transmitting uplink information except the K SC-FDMA symbols in the current uplink subframe.
  • the method includes: for PUCCH transmission, the user equipment uses the SC-FDMA symbol for transmitting uplink information except for the K SC-FDMA symbols in one uplink subframe to perform uplink time-spreading transmission format to transmit uplink information. Or,
  • the user equipment For PUSCH transmission, the user equipment performs rate matching transmission uplink information based on other SC-FDMA symbols for transmitting uplink information except for K SC-FDMA symbols in one uplink subframe.
  • the user equipment maps the uplink information to be transmitted to the uplink carrier in the current uplink.
  • the transmission is performed on the SC-FDMA symbol for transmitting uplink information except for the K SC-FDMA symbols in the frame, and further includes: For PUCCH transmission.
  • the user equipment transmits the uplink information by using the shortened PUCCH format; or, for the PUSCH transmission, the user equipment performs rate matching transmission uplink information based on the last SC-FDMA symbol reserved for transmitting the SRS.
  • the user equipment determines an uplink other than the uplink carrier where the PRACH is located. No uplink information is transmitted on the carrier in the current uplink subframe; or
  • the PR/FDMA symbol remains on all or part of the SC-FDMA symbol.
  • the user equipment determines that the uplink carrier does not transmit any uplink information in the current uplink subframe; or the user equipment performs power control on the uplink channel/signal in the current uplink subframe based on the PRACH transmit power, and transmits according to the power control. Power transmission of the uplink channel/signal in the current uplink subframe;
  • the uplink channel/signal includes at least one or more of PUCCH, PUSCH, and SRS.
  • the user equipment determines The uplink carrier other than the uplink carrier with the largest uplink TA does not transmit uplink information after the uplink channel in the current uplink subframe is further reserved; or
  • the user equipment determines that in addition to having The uplink carrier other than the uplink carrier of the minimum uplink TA further reserves the uplink information of the first two SC-FDMA symbols in the uplink channel in the current uplink subframe;
  • the uplink channel includes at least one of PUCCH, PUSCH, and PRACH.
  • the user equipment only has SRS transmission of the uplink carrier with the same uplink TA in the same uplink subframe.
  • the method for receiving uplink information in the embodiment of the present invention includes the following steps:
  • Step 601 The network side device determines that the uplink carrier reserves K SC-FDMA symbols in the current uplink subframe, and does not transmit uplink information, where K is a non-negative integer;
  • Step 602 The network side device receives, by using the uplink carrier, uplink information sent by the user equipment that has multiple uplink TAs in the current uplink subframe except for the SC-FDMA symbol that does not transmit the uplink information.
  • the network side device configures K SC-FDMA symbols for the user equipment by using high layer signaling or PDCCH signaling; or the network side device notifies K SC-FDMA symbols by means agreed in advance with the user equipment; or the network side The device notifies the K SC-FDMA symbols to the user equipment in advance through the high layer signaling or the PDCCH signaling, and configures whether the user equipment reserves K SC-FDMA symbols in the current uplink subframe by using a specific bit field in the PDCCH signaling.
  • the PDCCH is a PDCCH in a downlink subframe corresponding to positive acknowledgement ACK/negative acknowledgement NACK feedback in the current uplink subframe, and/or a PDCCH corresponding to the PUSCH in the current uplink subframe.
  • the higher layer signaling is RRC signaling or MAC signaling.
  • the corresponding uplinks of the different uplink carriers are the same or different in the same uplink subframe; the K corresponding to the different uplink carriers in the different uplink subframes are the same or different.
  • the SRS is transmitted in the last SC-FDMA symbol in the current uplink subframe, and the K SC-FDMA symbols are the first K SC-FDMA symbols in the current uplink subframe; or the SRS is in the current uplink subframe.
  • the first SC-FDMA symbol is transmitted, and the K SC-FDMA symbols are the last K SC-FDMA symbols in the current uplink subframe.
  • the network side device determines K SC-FDMA symbols, and further includes: The network side device determines that only K SC-FDMA symbols are reserved in one uplink subframe for the uplink carrier except the uplink carrier with the smallest uplink TA, or the network side device determines that the uplink carrier with the smallest uplink TA is in one uplink subframe. There is no need to reserve SC-FDMA symbols in the frame.
  • the network side device determines K SC-FDMA symbols, and further includes:
  • the uplink information is not transmitted on the last K SC-FDMA symbols in the previous adjacent uplink subframe of the current uplink subframe, and the network side device determines the current uplink.
  • the first K SC-FDMA symbols are not reserved for the uplink carrier in the subframe.
  • the network side device determines K SC-FDMA symbols, and further includes:
  • the network side device determines that only K SC-FDMA symbols are reserved in one uplink subframe for the uplink carrier except the uplink carrier with the largest uplink TA, or the network side device determines that the uplink carrier with the largest uplink TA is in one uplink subframe. There is no need to reserve SC-FDMA symbols in the frame.
  • the network side device determines K SC-FDMA symbols, and further includes:
  • the uplink information is not transmitted on the first K SC-FDMA symbols in the next adjacent uplink subframe of the current uplink subframe, and the network side device determines the current uplink.
  • the K-SC-FDMA symbols are not reserved for the uplink carrier in the subframe.
  • the network side device receives, by the uplink carrier, another SC-FDMA symbol other than the SC-FDMA symbol that does not transmit the uplink information in the current uplink subframe, and receives the user equipment transmission and transmission with multiple uplink TAs.
  • Uplink information including:
  • the network side device receives uplink information by using a SC-FDMA symbol for transmitting uplink information in an uplink subframe to perform time domain orthogonal despreading in a transmission format based on other SC-FDMA symbols for transmitting uplink information.
  • the network side device For PUSCH transmission, the network side device performs de-rate matching to receive uplink information based on SC-FDMA symbols for transmitting uplink information except for K SC-FDMA symbols in one uplink subframe.
  • the network side device uses the uplink carrier to transmit the SC information of the uplink information in the current uplink subframe.
  • the SC-FDMA symbol other than the FDMA symbol receives the uplink information transmitted by the user equipment with multiple uplink TAs, and further includes:
  • the network side device receives the uplink information by using the shortened PUCCH format; or for the PUSCH transmission, the network side device reserves the uplink information for the SRS transmission based on the last SC-FDMA symbol reservation for the SRS transmission.
  • the method further includes:
  • the network side device determines that no uplink information is received in the current uplink subframe on the uplink carrier except the uplink carrier where the PRACH is located; or
  • the PR/FDMA symbol remains on all or part of the SC-FDMA symbol.
  • the network side device determines that the uplink carrier does not receive any uplink data in the current uplink subframe; or the network side device determines that each uplink carrier in the current uplink subframe receives the uplink information;
  • the uplink channel/signal includes at least one or more of PUCCH, PUSCH, and SRS.
  • the method further includes: if there is an SRS transmission in the last SC-FDMA symbol in the current uplink subframe or the current uplink subframe is an SRS transmission subframe and the last SC-FDMA symbol of the SRS in one uplink subframe
  • the network side device determines that the uplink carrier other than the uplink carrier having the largest uplink TA does not transmit the uplink information after the uplink channel in the current uplink subframe is further reserved; or
  • the network side device determines The uplink carrier other than the uplink carrier with the smallest uplink TA further reserves the uplink information in the first 2 SC-FDMA symbols in the uplink channel in the current uplink subframe;
  • the uplink channel includes at least one of PUCCH, PUSCH, and PRACH.
  • the network side device only receives the SRS of the uplink carrier with the same uplink TA in the same uplink subframe.
  • a process may be synthesized to form another method for transmitting uplink information, that is, step 501 to step 502 are performed first, and then step 602 is performed. There is no necessary connection between step 602 and step 501 and step 502, and only need to be guaranteed before step 602.
  • Scenario 1 The UE aggregates 3 carriers for uplink transmission, and belongs to different TA groups.
  • the TAs of carriers 1 and 2 are smaller than carrier 3, and the difference is about 0.5 SC-FDMA symbols.
  • carrier 1 and carrier 2 are in the current uplink subframe.
  • the last SC-FDMA symbol will partially overlap with the first SC-FDMA symbol of carrier 3 in the next adjacent uplink subframe, at this time:
  • the UE receives the high layer signaling or the PDCCH signaling sent by the base station, or the UE and the base station pre-agree to determine the carrier.
  • the last SC-FDMA symbol of all uplink subframes on 1 and 2 is vacant and does not transmit any uplink information; the carrier TA has the largest TA, and the last SC-FDMA symbol of the uplink channel/signal on it does not match the other carriers.
  • the first SC-FDMA symbol in the next adjacent uplink subframe overlaps, so there is no need to vacate the uplink channel/signal on carrier 3.
  • subframe i the UE's PUCCH on carrier 1 is transmitted using shortened PUCCH format; the PUSCH on carrier 2 is rate matched for transmission based on the last SC-FDMA symbol vacancy;
  • subframe i-1 the PUCCH of the UE on carrier 1 is transmitted using the shortened PUCCH format; the PUSCH on carrier 2 is rate matched transmission based on the last SC-FDMA symbol vacancy; in subframe i, there is no need to vacate the SC- The FDMA symbol, ⁇ transmits each upstream channel in a conventional manner.
  • the UE calculates the target transmit power of the uplink channel on each carrier according to the power control parameter and the power control formula on each carrier, and determines whether the sum of the UE transmit powers in the current subframe i exceeds the maximum transmit power, if not, Then, each uplink channel is transmitted according to the target transmit power; if it exceeds, the PUCCH transmit power is preferentially guaranteed not to be reduced according to the channel priority, and the equal-proportion power is reduced for the PUSCH on the carrier 2 and the carrier 3 to satisfy, after the power is reduced,
  • the sum of the PUSCH transmit powers on carriers 2, 3 does not exceed the maximum transmit power minus the transmit power of the PUCCH on carrier 1: the PUCCH is transmitted with the target transmit power, and the PUSCH is transmitted according to the transmit power after the power is reduced.
  • Method 1 it is determined that the PUCCH on Carrier 1 in each uplink subframe is received by shortened PUCCH format, and the PUSCH on Carrier 2 is subjected to de-rate matching reception based on the last SC-FDMA symbol vacancy;
  • Method 2 in subframe i-1, the receiving method is the same as method 1, and in subframe i, it is received according to a conventional method.
  • Scenario 2 The UE aggregates 4 carriers for uplink transmission, and the TA group is different.
  • the TA pre-carrier 1 of carrier 2 has about 0.5 SC-FDMA symbols
  • the TA pre-carrier 1 of carrier 3 and carrier 4 has about 0.8 SC-FDMA symbols.
  • the first SC-FDMA symbol of the carrier 3, 4 in the uplink subframe i overlaps with the last SC-FDMA symbol of the carrier 1, 2 in the adjacent uplink subframe i-1
  • the carrier 2 is
  • the first SC-FDMA symbol in the uplink subframe i overlaps with the last SC-FDMA symbol of the carrier 1 in the adjacent uplink subframe i+1
  • the SRS is transmitted in the last SC-FDMA symbol, at this time:
  • the UE receives the high layer signaling or PDCCH signaling sent by the base station, or the UE and the base station pre-arrange, and determines that the first SC-FDMA symbol of the current or all uplink subframes on the carriers 2, 3, 4 is vacant and does not transmit any uplink information, As shown in FIG. 9; since the TA of carrier 1 is the smallest, the first SC-FDMA symbol of the uplink channel/signal on the carrier will not be the last SC-FDMA symbol in the previous adjacent uplink subframe on the other carriers. Simultaneous transmission, so there is no need to vacate any SC-FDMA symbols for the upstream channel/signal on carrier 1 to ensure its transmission efficiency;
  • the UE has both SRS and PUCCH transmissions on the carrier 1, and when the configuration supports SRS and ACK/NACK transmission simultaneously, the PUCCH is transmitted by using the shortened PUCCH format, otherwise the SRS is discarded, and the normal PUCCH format is used for transmission;
  • Carrier 2 only has a PUSCH transmission, and the first SC-FDMA symbol is vacant, then the rate matching transmission is performed on the PUSCH based on the first SC-FDMA symbol vacancy;
  • the UE has both SRS and PUSCH transmissions on the carrier 3, and the first one If the SC-FDMA symbol is vacant, the first SC-FDMA symbol is vacant and the last SC-FDMA symbol reserved for the SRS to perform rate matching transmission on the PUSCH;
  • the UE has only SRS transmission on the carrier 4, and the first SC- If the FDMA symbol is vacant, the UE transmits the SRS on the last SC-FDMA symbol of the carrier;
  • the UE calculates the target transmit power of the uplink channel on each carrier according to the power control parameters and the power control formula on each carrier, and performs power reduction according to the following steps:
  • Step 1 Determine whether the sum of the target transmit powers of the PUCCH on the carrier 1 and the PUSCH on the carriers 2 and 3 in the current subframe i exceeds the maximum transmit power. If it exceeds, according to the channel priority, the PUCCH transmit power is preferentially guaranteed not to decrease. Equalizing the power of the PUSCH on the carrier 2 and the carrier 3 to meet, after the power is reduced, the sum of the transmit powers of the PUSCHs on the carriers 2 and 3 in the current subframe i does not exceed the maximum transmit power minus the carrier 1 The transmit power of the PUCCH is obtained as the actual transmit power of the PUSCH on the carriers 2 and 3; otherwise, the target transmit power of the PUSCH on the carriers 2 and 3 is taken as the actual transmit power;
  • Step 2 Determine the target transmit power of the PUCCH on the carrier 1 in the current subframe i, the actual transmit power of the PUSCH on the carrier 2 (ie, the power obtained in step 1), and the sum of the target transmit powers of the SRSs on the carriers 3 and 4.
  • the maximum transmit power is exceeded, if it exceeds, the SRS on the carriers 3, 4 is equally proportionally reduced, so as to satisfy the power reduction, the sum of the transmit powers of the SRSs on the carriers 3, 4 does not exceed the maximum transmit power minus the carrier 1 PUCCH, the actual transmit power of the PUSCH on carrier 2, and record the transmit power P3, P4 after the SRS power reduction on carriers 3, 4; if not, record the target transmit power of the SRS on carriers 3, 4 as P3 , P4;
  • Step 3 Determine whether the sum of the target transmit power of the SRS on the carrier 1 in the current subframe i, the actual transmit power of the PUSCH on the carrier 2 (ie, the power obtained in step 1), and the target transmit power of the SRS on the carriers 3 and 4 exceeds Maximum transmit power, if exceeded, equalizes the power of the SRS on carriers 1, 3, and 4 to meet the power reduction.
  • the sum of the transmit powers of the SRSs on carriers 1, 3, and 4 does not exceed the maximum transmit power minus the carrier.
  • Step 4 Determine the smaller of ⁇ 3 and P3' as the actual transmit power of SRS on carrier 3; determine the smaller of ⁇ 4 and P4' as the actual transmit power of SRS on carrier 4;
  • the specific vacancy situation is the same as mode 1; in addition, it is considered that the SRS of the uplink carriers 3 and 4 having the largest ⁇ overlaps with the last two SC-FDMA symbols of the carrier channel 1 and the carrier 2 upstream channel, in order to avoid the simultaneous SRS at 2
  • the SC-FDMA symbols are transmitted simultaneously with the uplink channel on other carriers, and may additionally configure or stipulate that the last two SC-FDMA symbols in the current subframe on Carrier 1 and Carrier 2 do not transmit any uplink channel bearer information (such as UCI). And uplink data), but the SRS can be transmitted in the last SC-FDMA symbol; as shown in FIG. 10;
  • the UE has both SRS and PUCCH transmissions on the carrier 1, and the PUCCH needs to vacate the last two SC-FDMA symbol transmissions.
  • a new PUCCH format needs to be defined, and a new time domain spreading length is used to avoid Data is mapped to the last 2 SC-FDMA symbols, SRS is transmitted in the last SC-FDMA symbol;
  • UE has only PUSCH transmission on carrier 2, and the first SC-FDMA symbol is vacant, and the last 2 SC-FDMA symbols are vacant, then Performing rate matching transmission on the PUSCH based on the first and last 2 SC-FDMA symbols vacant;
  • the UE has both SRS and PUSCH transmissions on the carrier 3, and only the first SC-FDMA symbol is vacant, based on the first SC-
  • the FDMA symbol is vacant and the last SC-FDMA symbol is reserved for the SRS to perform rate matching transmission on the PUSCH;
  • the UE has only SRS transmission on the carrier 4, and only the first SC-FDMA symbol is vacant, then the last
  • the UE calculates the target transmit power of the uplink channel on each carrier according to the power control parameters and the power control formula on each carrier, and performs power reduction according to the following steps:
  • Step 1 Determine whether the sum of the target transmit powers of the PUCCH on the carrier 1 and the PUSCH on the carriers 2 and 3 in the current subframe i exceeds the maximum transmit power. If it exceeds, according to the channel priority, the PUCCH transmit power is preferentially guaranteed not to decrease. Equalizing the power of the PUSCH on the carrier 2 and the carrier 3 to meet, after the power is reduced, the sum of the transmit powers of the PUSCHs on the carriers 2 and 3 in the current subframe i does not exceed the maximum transmit power minus the carrier 1 The transmit power of the PUCCH is obtained as the actual transmit power of the PUSCH on the carriers 2 and 3; otherwise, the target transmit power of the PUSCH on the carriers 2 and 3 is taken as the actual transmit power;
  • Step 2 Determine whether the sum of the target transmit power of the SRS on the carrier 1 in the current subframe i and the target transmit power of the SRS on the carriers 3, 4 exceeds the maximum transmit power, if exceeded, on the carriers 1, 3, and 4.
  • the SRS performs a proportional power reduction to meet the power reduction, and the sum of the transmit powers of the SRSs on the carriers 1, 3, and 4 does not exceed the maximum transmit power, and obtains the actual transmit power of the SRSs on the carriers 1, 3, and 4; , determining that the target transmit power of the SRS on carriers 1, 3, and 4 is the actual transmit power;
  • Base station side Consistent with the understanding of the UE, for mode 1: in the current subframe i: if SRS and ACK/NACK are supported for simultaneous transmission, the PUCCH and SRS are received on the carrier 1 using the shortened PUCCH format, otherwise the PUCCH is received in the normal PUCCH format; Performing a de-rate matching receiving PUSCH on carrier 2 based on the first SC-FDMA symbol vacancy; performing de-rate matching receiving PUSCH and SRS on carrier 3 based on the first SC-FDMA symbol vacancy and the last SC-FDMA symbol transmission SRS; The SRS is received on the last SC-FDMA symbol on carrier 4.
  • the uplink carrier whose TA is smaller than the carrier in the previous adjacent uplink subframe of the current uplink subframe does not exist on the last SC-FDMA symbol.
  • the UE aggregates 4 carriers for uplink transmission, and the TA group is different, and the TA of the carrier 2 leads the carrier 1
  • TA pre-carrier 1 of carrier 3, 4 is about 0.8 SC-FDMA symbol, then the first SC-FDMA symbol of carrier 3, 4 in uplink subframe i will be with carrier 1, 2
  • the last SC-FDMA symbol in the adjacent uplink subframe i-1 partially overlaps, and the first SC-FDMA symbol of the carrier 2 in the uplink subframe i is adjacent to the carrier 1 in the uplink subframe i+1.
  • the last SC-FDMA symbol in the overlap partially overlaps, the SRS is transmitted in the last SC-FDMA symbol, and there is only one TA SRS transmission in one uplink subframe, at this time:
  • the UE receives the high layer signaling or PDCCH signaling sent by the base station, or the UE and the base station pre-arrange, and determines that the first SC-FDMA symbol of the current or all uplink subframes on the carriers 2, 3, 4 is vacant and does not transmit any uplink information, As shown in FIG. 11; since the TA of carrier 1 is the smallest, the first SC-FDMA symbol of the uplink channel/signal on the carrier will not be the last SC-FDMA symbol in the previous adjacent uplink subframe on the other carriers. Simultaneous transmission, so there is no need to vacate any SC-FDMA symbols for the upstream channel/signal on carrier 1 to ensure its transmission efficiency;
  • the UE has only PUCCH transmission on carrier 1, and transmits in normal PUCCH format; only PUSCH transmission exists in carrier 2, and the first SC-FDMA symbol is vacant, based on the first SC-FDMA
  • the symbol vacant performs rate matching transmission on the PUSCH; the SRS and PUSCH transmissions exist simultaneously on the carrier 3, and the first SC-FDMA symbol is vacant, based on the first SC-FDMA symbol vacancy and the last SC-FDMA symbol reservation
  • the SRS performs rate matching transmission on the PUSCH, and transmits SRS in the last SC-FDMA symbol; only SRS transmission exists in the carrier 4, and the first SC-FDMA symbol is vacant, then the UE is in the last SC-FDMA symbol of the carrier. Transmitting SRS;
  • the UE calculates the target transmit power of the uplink channel on each carrier according to the power control parameters and the power control formula on each carrier, and performs power reduction according to the following steps:
  • Step 1 Determine whether the sum of the target transmit powers of the PUCCH on the carrier 1 and the PUSCH on the carriers 2 and 3 in the current subframe i exceeds the maximum transmit power. If it exceeds, according to the channel priority, the PUCCH transmit power is preferentially guaranteed not to decrease. Equalizing the power of the PUSCH on the carrier 2 and the carrier 3 to meet, after the power is reduced, the sum of the transmit powers of the PUSCHs on the carriers 2 and 3 in the current subframe i does not exceed the maximum transmit power minus the carrier 1 The transmit power of the PUCCH is obtained as the actual transmit power of the PUSCH on the carriers 2 and 3; otherwise, the target transmit power of the PUSCH on the carriers 2 and 3 is taken as the actual transmit power;
  • Step 2 Determine whether the sum of the target transmit power of the SRS on the carriers 3 and 4 in the current subframe i and the actual transmit power of the PUCCH on the carrier 1 and the actual transmit power of the PUSCH on the carrier 2 exceed the maximum transmit power.
  • the SRS on carriers 3, 4 performs equal power reduction to meet the power reduction.
  • the sum of the transmit powers of the SRSs on carriers 3, 4 does not exceed the maximum transmit power minus the actual transmit power of PUCCH on carrier 1 and the PUSCH on carrier 2.
  • the actual transmit power is obtained, and the actual transmit power of the SRS on the carriers 3, 4 is obtained; if not, the target transmit power of the SRS on the carriers 3, 4 is determined to be the actual transmit power;
  • the base station receives the PUCCH on the carrier 1 using the normal PUCCH format; on the carrier 2, the demodulation matching receives the PUSCH based on the first SC-FDMA symbol vacancy; on the carrier 3 Demodulating the received PUSCH and SRS based on the first SC-FDMA symbol vacancy and the last SC-FDMA symbol transmission SRS; receiving the SRS on the last SC-FDMA symbol determined on carrier 4.
  • the uplink carrier with the TA smaller than the carrier in the previous adjacent uplink subframe of the current uplink subframe does not exist on the last SC-FDMA symbol.
  • Data transmission ie, where possible, there is no uplink channel/signal transmission on the uplink carrier where the TA is smaller than the carrier in the previous adjacent uplink subframe, or the PUCCH is shortened format and the last SC-FDMA symbol has no SRS transmission, or the PUSCH is based on
  • Scenario 4 The UE aggregates 4 carriers for uplink transmission, and the TA group is different.
  • the TAs 3 and 4 of the carriers 1 and 2 are about 0.5 SC-FDMA symbols, and the carriers 3 and 4 are the last one of the uplink subframes i.
  • the SC-FDMA symbol will partially overlap with the first SC-FDMA symbol of the carrier 1, 2 in the adjacent uplink subframe i+1, and the SRS is The first SC-FDMA symbol is transmitted, and only one TA of the SRS is transmitted in one uplink subframe.
  • UE side UE side:
  • the UE receives the high layer signaling or PDCCH signaling sent by the base station or the UE and the base station pre-arrange, and determines that the last SC-FDMA symbol of the current or all uplink subframes on the carriers 3, 4 is vacant and does not transmit any uplink information, as shown in FIG. 12 As shown, since the TA of the carriers 1, 2 is the largest, the last SC-FDMA symbol of the uplink channel/signal on the carrier will not be the same as the first SC-FDMA symbol in the next adjacent uplink subframe on the other carriers. Transmission, so there is no need to vacate any SC-FDMA symbols for the upstream channel/signal on carriers 1, 2 to ensure its transmission efficiency;
  • the UE has both PUCCH and SRS transmissions on the carrier 1.
  • a new shortened PUCCH format needs to be defined to support the SRS in the first SC-FDMA symbol transmission.
  • the single implementation manner is to exchange the time domain orthogonal spreading sequence used by the two slots of the shortened PUCCH format in Rel-10, that is, the first time slot uses a time domain orthogonal spreading sequence of length 4,
  • the second SC-FDMA symbol begins to map, and the second time slot uses a time domain orthogonal spreading sequence of length 5.
  • the SRS is transmitted in the first SC-FDMA symbol, otherwise, the SRS is discarded, and the normal PUCCH format is transmitted.
  • the first SC-FDMA symbol reservation is used to transmit the SRS for rate matching transmission of the PUSCH, and the SRS is transmitted in the first SC-FDMA symbol;
  • the last SC-FDMA symbol is vacant, then the rate matching transmission is performed on the PUSCH based on the last SC-FDMA symbol vacancy; the UE according to the power control parameter and the power control formula on each carrier Operators upstream channel obtained on the target transmit power of each carrier, and reducing the power according to the following steps:
  • Step 1 Determine whether the sum of the target transmit powers of the PUCCH on the carrier 1 and the PUSCH on the carriers 2 and 3 in the current subframe i exceeds the maximum transmit power. If it exceeds, according to the channel priority, the PUCCH transmit power is preferentially guaranteed not to decrease. Equalizing the power of the PUSCH on the carrier 2 and the carrier 3 to meet, after the power is reduced, the sum of the transmit powers of the PUSCHs on the carriers 2 and 3 in the current subframe i does not exceed the maximum transmit power minus the carrier 1 The transmit power of the PUCCH is obtained as the actual transmit power of the PUSCH on the carriers 2 and 3; otherwise, the target transmit power of the PUSCH on the carriers 2 and 3 is taken as the actual transmit power;
  • Step 2 Determine whether the sum of the target transmit power of the SRS on the carriers 1 and 2 in the current subframe i and the actual transmit power of the PUSCH on the carrier 3 exceeds the maximum transmit power, and if so, the SRS on the carriers 1, 2, etc.
  • the proportional power is reduced, so as to satisfy the power reduction, the sum of the transmit powers of the SRSs on the carriers 1, 2 does not exceed the maximum transmit power minus the actual transmit power of the PUSCH on the carrier 3, and the actual transmit power of the SRS on the carriers 1, 2 is obtained; Not exceeding, determining that the target transmit power of the SRS on carriers 1, 2 is the actual transmit power;
  • the base station receives the PUCCH and SRS on the carrier 1 with the newly defined shortened PUCCH format; the carrier 2 performs the de-rate matching reception PUSCH based on the first SC-FDMA symbol transmission SRS. SRS; de-rate matching on carrier 3 based on the last SC-FDMA symbol vacancy Receive PUSCH.
  • the uplink carrier with the TA greater than the carrier in the next adjacent uplink subframe of the current uplink subframe is on the first SC-FDMA symbol.
  • Scenario 5 The UE aggregates three carriers for uplink transmission, and the TA group is different.
  • the carrier 2 of the carrier 2 has about 0.5 SC-FDMA symbols, and the carrier 3 transmits the PRACH in the uplink subframe i-1.
  • the format2 preamble sequence) continues for 2 subframes, so carriers 1 and 2 have some or all of the SC-FDMA symbols overlapping with the PRACH in subframe il, subframe i, and subframe i+1.
  • Mode A Since carriers 1 and 2 have some or all of the SC-FDMA symbols overlapping with the PRACH in subframe i-1, subframe i, and subframe i+1, the UE determines that in the subframes of carriers 1 and 2 The uplink information is not transmitted, and the PRACH is transmitted only on the carrier where the PRACH is located, as shown in FIG. 13A; if there are PUCCHs and/or PUSCHs transmitted in these subframes (for example, the base station misroutes the PUSCH, or configures/triggers the SRS/CSI transmission, Or, if the PDSCH is scheduled to perform ACK/NACK feedback, the UE considers that it is a scheduling error and does not transmit these channels.
  • Mode B Since carrier 1 and carrier 2 are in subframe i+1, only the first part of the SC-FDMA symbol overlaps with the PRACH, and the UE may be SC-FDMA that does not overlap with the PRACH in subframes i+1 on carriers 1 and 2.
  • the uplink channel/signal is transmitted on the symbol.
  • the last SC-FDMA symbol in the subframe i+1 of the carrier 2 transmits the SRS (ie, the base station configures the subframe as an SRS subframe).
  • Mode C Supporting the simultaneous transmission of the PRACH and other uplink channels/signals, the UE receiving the high layer signaling or PDCCH signaling sent by the base station or the UE and the base station pre-arranging to determine that the first SC-FDMA symbol in the one subframe of the carrier 2 is vacant Do not transmit any uplink information to avoid simultaneous transmission of the uplink channel/signal in the previous uplink subframe on carrier 1 and the uplink channel/signal in the current uplink subframe on carrier 2; since the TA of carrier 1 is smaller than carrier 2, The first SC-FDMA symbol of the uplink channel/signal on is not transmitted simultaneously with the last SC-FDMA symbol in the previous adjacent uplink subframe on Carrier 2, so the upstream channel on Carrier 1 is not required/ The signal is vacant with any SC-FDMA symbol to ensure its transmission efficiency, as shown in Figure 13C;
  • the specific transmission mode is as follows: the PUCCH and the PUSCH in the Rel-8/910 can be reused on the carrier 1, and the SRS transmission mode is: in the non-SRS subframe, the normal PUCCH format or the PUSCH is used to perform rate matching based on all symbol transmission data; In the subframe, when ACK/NACK and SRS are supported for simultaneous transmission, the shorted PUCCH format is used, and the SRS can be transmitted in the last SC-FDMA symbol, otherwise, the SRS is discarded, the normal PUCCH format is transmitted, or the PUSCH is based on the last SC. - FDMA symbol reservation for rate matching of SRS, SRS can be transmitted in the last SC-FDMA symbol.
  • the PUSCH performs rate matching based on the first SC-FDMA vacancy; in the SRS subframe, the PUSCH is based on the first SC-FDMA vacancy and the last one
  • the SC-FDMA symbol is reserved for rate matching of the SRS, and the SRS can be transmitted in the last SC-FDMA; in addition, the UE needs to calculate the uplink channel on each carrier according to the power control parameter and the power control formula on each carrier.
  • the sum of the target transmit powers of the PUSCHs on carriers 1 and 2 in subframe i exceeds the maximum transmit power minus the transmit power of the PRACH, and if so, the equal power of the PUSCHs on carriers 1 and 2 according to the channel priority After the power is reduced, the sum of the transmit powers of the PUSCHs on carriers 1 and 2 in subframe i does not exceed the maximum transmit power minus the transmit power of the PRACH, and the actual transmit power of the PUSCH on carriers 1 and 2 is obtained; otherwise , using the target transmit power of the PUSCH on carriers 1 and 2 as the actual transmit power;
  • the power of the PUSCH on 2 is reduced to meet the power reduction, and the sum of the transmit power of the PUCCH on carrier 1 and the PUSCH on the second subframe i+1 does not exceed the maximum transmit power minus the transmit power of the PRACH, if When the PUSCH power is reduced to 0, the total transmit power of the UE still exceeds the maximum transmit power, and the transmit power of the PUCCH is further reduced, thereby obtaining the actual transmit power of the PUCCH on the carrier 1 and the PUSCH on the carrier 2; otherwise, the PUCCH on the carrier 1 And the target transmit power of the PUSCH on carrier 2 is taken as the actual transmit power.
  • Mode B Since carrier 1 and carrier 2 are in subframe i+1, only the first part of SC-FDMA symbols overlap with PRACH, and the base station may not overlap with PRACH in subframes i+1 on carriers 1 and 2 The uplink channel/signal is received on the symbol. As shown in FIG. 13B, the last SC-FDMA symbol in the subframe i+1 of the carrier 2 receives the SRS (better, the base station should preferentially configure the subframe as an SRS subframe).
  • Mode C Supporting simultaneous transmission of PRACH and other uplink channels/signals, high-level signaling or PDCCH signaling sent by the base station to the UE or pre-agreed with the UE, the first SC-FDMA symbol in one subframe of the carrier 2 is vacant and not transmitted.
  • the first SC-FDMA symbol of the upstream channel/signal is not transmitted simultaneously with the last SC-FDMA symbol in the previous adjacent uplink subframe on Carrier 2, so there is no need to vacate the upstream channel/signal on Carrier 1.
  • the specific receiving manner is as follows:
  • the base station receives the uplink information in the subframes i and i+1 of the carriers 1 and 2.
  • the carrier 1 can reuse the PUCCH, PUSCH, and SRS transmission modes in the Rel-8/910: in the non-SRS subframe. ⁇ Use normal PUCCH format or PUSCH to perform rate-matching based on all symbol transmission data;
  • SRS subframes when ACK/NACK and SRS are supported for simultaneous transmission, use shortened PUCCH format to receive in the last SC-FDMA symbol.
  • SRS otherwise, does not receive SRS, uses normal PUCCH format transmission, or PUSCH performs de-rate matching based on the last SC-FDMA symbol reservation for SRS, and can receive SRS in the last SC-FDMA symbol.
  • the PUSCH performs de-rate matching based on the first SC-FDMA vacancy; in the SRS subframe, the PUSCH is based on the first SC-FDMA vacancy and the last SC-FDMA symbol reservation The SRS performs rate-matching and can receive the SRS in the last SC-FDMA.
  • the uplink carrier with the TA smaller than the carrier in the next adjacent uplink subframe of the current uplink subframe does not exist on the last SC-FDMA symbol.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions are provided for implementing one or more processes and/or block diagrams in the flowchart The steps of the function specified in the box or in multiple boxes.

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