WO2017193410A1 - Ta获取方法和装置 - Google Patents
Ta获取方法和装置 Download PDFInfo
- Publication number
- WO2017193410A1 WO2017193410A1 PCT/CN2016/082155 CN2016082155W WO2017193410A1 WO 2017193410 A1 WO2017193410 A1 WO 2017193410A1 CN 2016082155 W CN2016082155 W CN 2016082155W WO 2017193410 A1 WO2017193410 A1 WO 2017193410A1
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- WIPO (PCT)
- Prior art keywords
- carrier
- response message
- indication message
- base station
- sent
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- 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), DMT
Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and apparatus for acquiring a Time Advance (TA) of a carrier.
- TA Time Advance
- LTE-A Long Term Evolution-Advanced
- LTE-A is an evolution of Long Term Evolution (LTE), which aims to meet the higher demands and applications of the wireless communication market.
- IMT-Advanced International Mobile Telecommunications-Advanced
- LTE-A adopts Carrier Aggregation (CA) technology to improve the data transmission rate.
- a base station that supports carrier aggregation can aggregate multiple carrier carriers (CCs) for user equipment.
- CCs carrier carriers
- UE User Equipment
- the UE transmits an uplink signal by using a certain CC.
- the UE needs to obtain the TA that sends the uplink signal on the CC, so that the UE can send an uplink signal on the CC according to the TA of the CC, so as to prevent the uplink signal from being transmitted due to the transmission delay in the sending process.
- the problem that the clock of the uplink signal is inconsistent at the receiving end of the base station side.
- the UE sends a sounding reference signal (SRS) on the CC according to the TA of the CC, so that the base station can listen to the SRS within a preset time.
- SRS sounding reference signal
- the UE obtains a TA that transmits an uplink signal on a certain CC by performing random access. For example, the UE obtains a physical random access channel (Physical Random Access Channel, PRASH) configuration message of the CC, where The PRACH configuration message includes preamble information, a CC information for transmitting the preamble, and a time for transmitting the preamble. Then, the UE uses the CC to send a preamble to the base station to perform random access according to the PRACH configuration message at a specified time.
- PRASH Physical Random Access Channel
- the base station After receiving the preamble sent by the UE, the base station replies to the UE with a random access response (Random) The access response (RAR), wherein the RAR includes the TA information of the CC, so that the UE can send an uplink signal on the CC according to the TA of the CC, so as to ensure that the UE receives the uplink signal sent by the CC on the base station side.
- the clock at the end is consistent.
- the CC corresponding to the UE is a CC that does not transmit the PUSCH, that is, the random access cannot be performed on the CC
- the TA of the UE transmitting the uplink signal on the CC cannot be obtained by using the prior art, so that the When the UE supports carrier switching, that is, after the carrier can perform uplink data transmission after carrier switching, the UE cannot transmit uplink data by using the CC.
- the method and the device for acquiring the TA are used to solve the problem that if the CC corresponding to the UE is a CC that does not transmit the PUSCH, the random access cannot be performed on the CC, and the UE cannot be acquired.
- an embodiment of the present invention provides a TA acquiring method, including:
- a timing advance TA of the second carrier where the second carrier is a carrier that does not transmit a PUSCH.
- the TA acquisition method provided by the first aspect includes: the base station generates an indication message, and sends the indication message to the UE, where the UE receives the indication message sent by the base station, and acquires the timing advance TA of the second carrier according to the indication message, and second.
- the carrier is a carrier that does not transmit the PUSCH, so that the TA of the second carrier can be acquired even if the second carrier is a carrier that does not transmit the PUSCH.
- the method further includes: switching from the first carrier to the second carrier.
- the indication message includes a preamble and/or a transmission resource identifier that needs to be transmitted to the second carrier.
- the transmission resource identifier includes at least one of the following: a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol location identifier, a carrier identifier, and a physical resource. Block ID.
- the acquiring the TA of the second carrier according to the indication message includes:
- the acquiring the TA of the second carrier according to the indication message includes:
- the base station Receiving a response message sent by the base station, where the response information includes a TA and/or a random access power offset of the second carrier.
- the TA is determined by the base station according to the received information of the preamble.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the acquiring the TA of the second carrier according to the indication message includes:
- the acquiring the TA of the second carrier according to the indication message includes:
- the TA of the second carrier is a downlink TA
- the downlink TA is used as the uplink TA of the second carrier for uplink signaling
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the acquiring the TA of the second carrier according to the indication message includes:
- the acquiring the TA of the second carrier according to the indication message includes:
- the third carrier is the same carrier as the first carrier.
- the first carrier and the second carrier are in different time advance group TAGs.
- the response message is a new random access response message formed by modifying a payload of the random access response, or reinterpreted media access Control layer time advancement control unit TA MAC CE, or TA MAC CE, or a new random access response message formed by modifying the frame format of the random access response, or an existing media access control layer control unit MAC CE, or random access response.
- the receiving, by the receiving base station, the indication message includes:
- the receiving the response message sent by the base station includes:
- the indication message further includes: a fourth carrier number or a first carrier number.
- the receiving the response message sent by the base station includes:
- the indication information is radio resource control RRC signaling or physical layer signaling.
- the acquiring the TA of the second carrier according to the indication message includes:
- the acquiring the TA of the second carrier according to the indication message includes:
- the base station Receiving a response message sent by the base station, where the response information includes a difference between a TA of the second carrier and a first carrier TA.
- the according to the indication message Obtain the TA of the second carrier, including:
- Determining a TA of the second carrier according to a difference between a TA of the second carrier and a first carrier TA, and a TA of the first carrier.
- the indication message further includes: type information of the response message and/or time period information of the response message.
- the receiving the response message sent by the base station includes:
- the receiving the response message sent by the base station includes:
- an embodiment of the present invention provides a TA acquiring method, including:
- the TA acquisition method provided by the second aspect includes: determining whether the second carrier and the third carrier belong to the same time advance group TAG, where the second carrier is a carrier that does not transmit the PUSCH, and if yes, determining the TA of the second carrier The TA of the third carrier is the same, so that the TA of the second carrier can be obtained even if the second carrier is a carrier that does not transmit the PUSCH.
- the method further includes:
- the uplink signal is a sounding reference signal SRS.
- the method further includes:
- the third carrier is the same carrier as the first carrier.
- the third carrier is different from the first carrier, where the third carrier is an uplink carrier.
- an embodiment of the present invention provides a TA acquiring method, including:
- the indication message is used to indicate that the user equipment UE acquires the timing advance TA;
- the indication message includes a preamble and/or a transmission resource identifier that needs to be transmitted to the second carrier.
- the transmission resource identifier includes at least one of the following: a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol location identifier, a carrier identifier, and a physical resource. Block ID.
- the method further includes:
- the method further includes:
- the response information includes a TA and/or a random access power offset of the second carrier.
- the method further includes:
- the TA is determined according to the received information of the preamble.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the method further includes:
- the method further includes:
- the response message is that the response message is a new random access response message formed by modifying a payload of the random access response, or Interpreted medium access control layer time advancement control unit TA MAC CE, or TA MAC CE, or new random access formed by modifying the frame format of the random access response
- the response message or an existing media access control layer control unit MAC CE, or a random access response.
- the method further includes:
- the method further includes:
- a response message sent to the UE by the second carrier is a response message sent to the UE by the second carrier.
- the indication message further includes: a fourth carrier number or a first carrier number.
- the method further includes:
- the response message is sent to the UE through the fourth carrier or the first carrier.
- the indication information is radio resource control RRC signaling or physical layer signaling.
- the method further includes:
- the physical downlink control channel PDCCH order is sent to the UE.
- the method further includes:
- the indication message further includes: type information of the response message and/or time period information of the response message.
- the method further includes:
- a response message is sent to the UE for the UE to receive the response message during the time period.
- the method further includes:
- the beneficial effects of the TA acquisition method provided by the foregoing third aspect and the possible implementation manners of the third aspect
- the beneficial effects of the first aspect and the possible implementation manners of the first aspect may be referred to herein. Let me repeat.
- an embodiment of the present invention provides a TA acquiring apparatus, including:
- a receiver configured to receive an indication message sent by the base station
- a processor configured to acquire, according to the indication message, a timing advance TA of the second carrier, where the second carrier is a carrier that does not transmit a PUSCH.
- the method further includes:
- the indication message includes a preamble and/or a transmission resource identifier that needs to be transmitted to the second carrier.
- the transmission resource identifier includes at least one of the following: a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol location identifier, a carrier identifier, and a physical resource. Block ID.
- the processor is specifically configured to send the preamble to the base station on the second carrier.
- the processor is specifically configured to receive a response message sent by the base station, where the response information includes a TA and/or a random of the second carrier Access power offset.
- the TA is determined by the base station according to the received information of the preamble.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the processor is specifically configured to determine a first receiving time of the synchronization signal that is sent by using the third carrier, and determine, by using the The second reception time of the synchronization signal transmitted by the two carriers.
- the processor is specifically configured to: according to the difference between the second receiving time and the first receiving time, and the TA of the third carrier Determining the TA of the second carrier.
- the TA of the second carrier is a downlink TA.
- the downlink TA is used as an uplink TA for performing uplink signaling on the second carrier.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the processor is specifically configured to determine a first receiving time of the synchronization signal that is sent by using the third carrier, and determine, by using the The second reception time of the synchronization signal transmitted by the two carriers.
- the processor is specifically configured to: according to a difference between the second receiving time and the first receiving time, a synchronization difference between the base stations, And determining, by the TA of the third carrier, the TA of the second carrier.
- the third carrier is the same carrier as the first carrier.
- the first carrier and the second carrier are in different time advance group TAGs.
- the response message is that the response message is a new random access response message formed by modifying a payload of the random access response, or Interpretation of the medium access control layer time advancement control unit TA MAC CE, or TA MAC CE, or a new random access response message formed by modifying the frame format of the random access response, or an existing media connection Enter the control layer control unit MAC CE, or random access response.
- the receiver is specifically configured to receive an indication message that is sent by using a second carrier.
- the processor is specifically configured to receive a response message sent by the base station by using the second carrier.
- the indication message further includes: a fourth carrier number or a first carrier number.
- the processor is specifically configured to receive a response message sent by the base station on the fourth carrier or the first carrier.
- the indication information is radio resource control RRC signaling or physical layer signaling.
- the processor is specifically configured to receive a physical downlink control channel PDCCH command sent by the base station.
- the processor is specifically configured to receive a response message sent by the base station, where the response information includes a TA of the second carrier The difference between a carrier TA.
- the processor is specifically configured to: according to a difference between a TA of the second carrier and a first carrier TA, and a TA of the first carrier, Determining the TA of the second carrier.
- the indication message further includes: type information of the response message and/or time period information of the response message.
- the processor is specifically configured to receive a response message sent by the base station in the time period.
- the processor is specifically configured to parse the response message according to the type information of the response message.
- the beneficial effects of the TA acquisition device provided by the foregoing fourth aspect and the possible implementation manners of the fourth aspect
- the beneficial effects of the first aspect and the possible implementation manners of the first aspect may be referred to herein. Let me repeat.
- a fifth aspect of the present invention provides a TA acquiring apparatus, including:
- a processor configured to determine whether the second carrier and the third carrier belong to the same time advance group TAG, where the second carrier is a carrier that does not transmit the PUSCH;
- the processor is further configured to determine that the TA of the second carrier is the same as the TA of the third carrier.
- the method further includes:
- a transmitter configured to send an uplink signal on the second carrier according to the TA of the second carrier.
- the uplink signal is a sounding reference signal SRS.
- the method further includes:
- the third carrier is the same carrier as the first carrier.
- the third carrier is different from the first carrier, where the third carrier is an uplink carrier.
- the beneficial effects of the TA acquisition device provided by the foregoing fifth aspect and the possible implementation manners of the fifth aspect may be referred to the second aspect and the possible implementation manners of the second aspect. The beneficial effects will not be described here.
- an embodiment of the present invention provides a TA acquiring apparatus, including:
- a processor configured to generate an indication message, where the indication message is used to indicate that the user equipment UE acquires the timing advance TA;
- a transmitter configured to send the indication message to the UE.
- the indication message includes a preamble and a transmission resource identifier that need to be transmitted to the second carrier.
- the transmission resource identifier includes at least one of: a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol location identifier, a carrier identifier, and a physical resource. Block ID.
- the device further includes:
- a receiver configured to receive a preamble sent by the UE on the second carrier.
- the device further includes:
- a transmitter configured to send a response message to the UE, where the response information includes a TA and/or a random access power offset of the second carrier.
- the processor is further configured to:
- the TA is determined according to the received information of the preamble.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the processor is further configured to:
- a difference between the second reception time of the synchronization signal and a TA of the third carrier determine a TA of the second carrier.
- the processor is further configured to:
- the difference between the second reception time of the synchronization signal, the synchronization difference between the base stations, and the TA of the third carrier determine the TA of the second carrier.
- the response message is The message should be a new random access response message formed by modifying the payload of the random access response, or the reinterpreted medium access control layer time advance control unit TA MAC CE, or TA MAC CE, or Modifying a new random access response message formed by the frame format of the random access response, or an existing media access control layer control unit MAC CE, or a random access response.
- the transmitter is further configured to:
- the transmitter is further configured to:
- a response message sent to the UE by the second carrier is a response message sent to the UE by the second carrier.
- the indication message further includes: a fourth carrier number or a first carrier number.
- the transmitter is further configured to:
- the response message is sent to the UE through the fourth carrier or the first carrier.
- the indication information is radio resource control RRC signaling or physical layer signaling.
- the transmitter is further configured to:
- the physical downlink control channel PDCCH order is sent to the UE.
- the transmitter is further configured to:
- the response message sent to the UE is used by the UE to determine the TA of the second carrier according to the difference between the TA of the second carrier and the first carrier TA, and the TA of the first carrier.
- the response information includes a difference between the TA of the second carrier and the first carrier TA.
- the indication message further includes: type information of the response message and/or time period information of the response message.
- the transmitter is further configured to:
- a response message is sent to the UE for the UE to receive the response message during the time period.
- the transmitter is further configured to:
- the embodiment of the present invention provides a method and a device for acquiring a TA, the method includes: the base station generates an indication message, and sends the indication message to the UE, where the UE receives the indication message sent by the base station, and acquires the time of the second carrier according to the indication message.
- the TA is advanced, and the second carrier is a carrier that does not transmit the PUSCH. Thus, even if the second carrier is a carrier that does not transmit the PUSCH, the TA of the second carrier can be acquired.
- FIG. 1 is a schematic structural diagram of an LTE system according to an embodiment of the present disclosure
- FIG. 2 is a signaling flowchart of Embodiment 1 of a TA acquiring method according to an embodiment of the present disclosure
- FIG. 3 is a signaling flowchart of Embodiment 2 of a TA acquiring method according to an embodiment of the present disclosure
- FIG. 4 is a signaling flowchart of Embodiment 3 of a TA acquiring method according to an embodiment of the present disclosure
- FIG. 5 is a signaling flowchart of Embodiment 4 of a TA acquiring method according to an embodiment of the present disclosure
- FIG. 6 is a flowchart of a method according to Embodiment 5 of a TA acquiring method according to an embodiment of the present disclosure
- FIG. 7 is a schematic structural diagram of Embodiment 1 of a TA acquiring apparatus according to an embodiment of the present disclosure
- FIG. 8 is a schematic structural diagram of Embodiment 2 of a TA acquiring apparatus according to an embodiment of the present disclosure
- FIG. 9 is a schematic structural diagram of Embodiment 2 of a TA acquiring apparatus according to an embodiment of the present disclosure.
- the TA acquisition method and apparatus according to the embodiments of the present invention can be applied to the network architecture of the LTE system, and can also be applied to the network architecture of the next generation (4.5G or 5G) communication system.
- FIG. 1 is a schematic structural diagram of an LTE system according to an embodiment of the present invention.
- an LTE system is included, where the LTE system includes a UE, an evolved base station (Evolved Node B, eNodeB for short), and an evolved packet core network ( Evolved Packet Core (EPC).
- the EPC is responsible for the core network part
- the Mobility Management Entity (MME) is responsible for the signaling processing part
- S-GW Serving Gateway
- the eNodeB is responsible for the access network portion, also known as the evolved UMTS Terrestrial Radio Access Network (Evolved UTRAN, Evolved UTRAN).
- Evolved UTRAN evolved UMTS Terrestrial Radio Access Network
- the LTE system supports interoperability with other 3GPP systems. According to the duplex mode, the LTE system is divided into a Frequency Division Duplexing (LTE) system (Frequency Division Duplexing-LTE) and a Time Division Duplexing (LTE) system. Referred to as TDD-LTE).
- LTE Frequency Division Duplexing
- LTE Time Division Duplexing
- the terminal involved in the embodiment of the present invention may be a wireless terminal such as a mobile phone or a tablet computer, and the wireless terminal includes a device for providing voice and/or data services to the user, and the terminal may also be a handheld device with a wireless connection function, an in-vehicle device, or the like.
- a wearable device, a computing device, and various types of user equipments, UEs, mobile stations (MSs), and terminals are not limited in this embodiment of the present invention.
- the base station may be any device that manages the wireless network resource in the LTE communication network and the subsequent evolved communication network.
- the base station may be an evolved base station eNB in LTE, or may be a wireless in 5G.
- the embodiment of the present invention is not limited to a transceiver device (NeXt Node, NX for short).
- the TA acquisition method and apparatus are directed to solving the problem that if a CC corresponding to the UE is a CC that does not transmit a PUSCH, that is, the random access cannot be performed on the CC, and the method cannot be obtained.
- the TA acquisition method provided by the embodiment of the present invention includes:
- the base station generates an indication message.
- the base station when the UE needs to switch from the first carrier to the second carrier, the base station generates an indication message.
- the base station when the base station needs to send uplink data by using the second carrier, For example, the SRS is transmitted, and the base station generates an indication message.
- the indication message may have multiple implementation manners, which is not limited by the embodiment of the present invention.
- the indication message includes a preamble and a transmission resource identifier that need to be transmitted to the second carrier.
- the base station may send an indication message to the UE, so that the UE performs random access according to the indication message.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the base station may send an indication message to the UE, so that the UE performs the measurement of the synchronization signal reception time difference according to the indication message.
- the indication information may be radio resource control RRC signaling or physical layer signaling.
- the base station sends an indication message to the UE.
- the base station sends an indication message by using the first carrier.
- the base station sends an indication message by using the second carrier.
- the first carrier is a pre-switching carrier
- the second carrier is a switched carrier
- the UE receives an indication message sent by the base station.
- the UE acquires a timing advance TA of the second carrier according to the indication message, where the second carrier is a carrier that does not transmit the PUSCH.
- the method for obtaining a TA includes: the base station generates an indication message, and sends the indication message to the UE, where the UE receives the indication message sent by the base station, and acquires the timing advance TA of the second carrier according to the indication message, and second.
- the carrier is a carrier that does not transmit the PUSCH, so that the TA of the second carrier can be acquired even if the second carrier is a carrier that does not transmit the PUSCH.
- FIG. 3 is a signaling flowchart of Embodiment 2 of a method for acquiring a TA according to an embodiment of the present invention.
- the method for acquiring a TA provided by the embodiment of the present invention includes:
- the base station generates an indication message.
- the indication message includes a preamble and/or a transmission resource identifier that needs to be transmitted to the second carrier.
- the transmission resource identifier includes any one of a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol position identifier, a carrier identifier, and a physical resource block identifier.
- the subframe identifier is used to indicate which subframe the UE is located when transmitting the preamble on the second carrier.
- the OFDM symbol location identifier is used to indicate at which OFDM symbol location the UE's transmitted preamble on the second carrier is transmitted for transmission.
- the physical resource block identifier is used to indicate to which subframe the UE is located when transmitting the preamble on which physical resource block of the second carrier.
- the carrier identifier is used to indicate that the UE receives the response message sent by the base station on the carrier corresponding to the carrier identifier.
- the indication message includes a preamble and/or a transmission resource that needs to be transmitted to the second carrier, and a fourth carrier number or a first carrier number.
- the fourth carrier number or the first carrier number is used to indicate the UE. After the UE performs the random access by using the preamble, the UE needs to receive the random access response message on the fourth carrier or the first carrier.
- the indication message includes a preamble and/or a transmission resource and/or a type information of the response message and/or a time period information of the response message that are to be transmitted on the second carrier, and a fourth carrier number. Or the first carrier number.
- the type information of the response message and/or the time period information of the response message is used to notify the UE of the type of the response message and/or the time period during which the response message is sent, so that the UE receives the response message sent by the base station during the time period. And/or to facilitate the UE to parse the response message according to the type of the response message.
- the base station is pre-configured with a new preamble group message.
- the preamble group can be broadcast to the UE through broadcast signaling. Therefore, the base station may carry, in the indication message, an optional preamble from the preamble group according to the preamble group message, where the preamble group message includes a preamble group and each preamble in the preamble group.
- the corresponding response message format may be pre-configured to the UE.
- the preamble group is a set of preambles designed for carriers that do not transmit the PUSCH, and the message of the preamble group is known by the pre-configuration in the UE.
- the UE When the base station indicates that the UE adopts the preamble in the preamble group, the UE does not need to inform the UE of the type of the response message, and the UE can obtain the type of the response message replied by the base station according to the pre-configured preamble group information.
- the base station may select different preambles in the preamble group to perform the foregoing RACH configuration to acquire the TA, or configure multiple different RACHs.
- the domain and/or frequency domain resources perform the configuration of the above RACH to acquire the TA.
- the above RACH procedure is based on a non-competitive RACH.
- the uplink access response message does not include an uplink grant and a cell radio network temporary identifier (C-RNTI).
- the preamble in the indication message is a short preamble, for example, the preamble is a preamble specified in format 4 of the prior art.
- the base station sends an indication message to the UE.
- the UE receives an indication message sent by the base station.
- the UE sends a preamble to the base station on the second carrier.
- the UE sends a preamble on the subframe corresponding to the second carrier subframe identifier, where the indication message received by the UE includes the subframe identifier.
- the UE carries the preamble on the OFDM symbol position corresponding to the OFDM symbol position identifier, and sends the preamble in the OFDM symbol position corresponding to the second carrier, where the UE receives the indication message.
- the indication message Includes OFDM symbol location identification.
- the UE transmits a preamble on the corresponding physical resource block of the physical resource block identifier of the second carrier, where the indication message received by the UE includes the physical resource block identifier.
- the UE performs preamble transmission according to the base station sending an indication message, that is, the UE performs random access in a non-contention manner.
- the UE when receiving the indication message, the UE does not immediately send the preamble, and may send the preamble according to the preamble transmission time set in the indication message, or may send the downlink control channel to the UE through the base station.
- the (Physical Downlink Control Channel, PDCCH for short) command triggers the UE to send a preamble.
- Step 205 The base station receives a preamble sent by the UE on the second carrier.
- Step 206 The base station determines the TA according to the received information of the preamble.
- the base station determines the TA value according to the time of receiving the preamble and the received preamble.
- Step 207 The base station sends a response message to the UE, where the response information includes a TA of the second carrier and/or a random access power offset.
- the response message is a valid payload by modifying the random access response.
- the random access response message is a new random response message.
- the response message is a re-interpreted Medium Advance Medium Access Control Control Element (TA MAC CE).
- TA MAC CE Medium Advance Medium Access Control Control Element
- the reserved bit of the TA MAC CE can be utilized as the carrying TA.
- the response message is a new random access response message formed by modifying a frame format of the random access response.
- the bit of the identifier bit of the random access response may be used to carry a Time Advance Control Element (TA CE), where the TA CE carries the TA.
- TA CE Time Advance Control Element
- the response message is a random access response message.
- the random access response message is an existing random access response message.
- the response message is a Medium Access Control Control Element (MAC CE).
- MAC CE Medium Access Control Control Element
- the MAC CE is an existing MAC CE, and the MAC CE carries the TA.
- the UE when the UE performs preamble transmission according to the path loss estimation and the random access power offset, after receiving the preamble, the base station according to the actual received preamble signal strength value and the target power value. And determining a random access power offset of the UE, and sending the response information to the UE.
- the response message includes a difference between the TA of the second carrier and the first carrier TA.
- the UE may determine the TA of the second carrier according to the difference between the TA of the second carrier and the first carrier TA, and the TA of the first carrier.
- FIG. 4 is a signaling flowchart of Embodiment 3 of a method for acquiring a TA according to an embodiment of the present invention.
- the method for obtaining a TA according to the embodiment of the present invention includes:
- the base station generates an indication message.
- the indication information includes a synchronization signal
- the second carrier and the third carrier are managed by the same base station.
- the second carrier and the third carrier belong to different TAGs, that is, the TA of the second carrier is different from the TA of the third carrier, and the TA of the third carrier is known, wherein the third carrier is a carrier that transmits the PUSCH. That is to say, the third carrier can perform random access according to the prior art to obtain the TA of the third carrier.
- the third carrier is the same carrier as the first carrier, that is, the third carrier is the carrier before the handover, and the second carrier is the carrier after the handover.
- the base station sends an indication message to the UE.
- the base station sends an indication message to the UE by using the second carrier and the third carrier.
- the UE receives an indication message sent by the base station.
- the UE determines a first receiving time of the synchronization signal sent by the third carrier, and determines a second receiving time of the synchronization signal sent by the second carrier.
- the UE determines a TA of the second carrier according to a difference between the second receiving time and the first receiving time, and a TA of the third carrier.
- the difference between the second receiving time and the first receiving time is t 1
- the TA of the third carrier is t 2
- the TA of the second carrier is t 1 +t 2 .
- the TA of the second carrier is the downlink TA, but considering the reciprocity of the channel, that is, the characteristics of the uplink channel and the characteristics of the downlink channel are basically the same, that is, the uplink TA and the downlink TA value of the second carrier are the same.
- the uplink TA of the second carrier can be used as the uplink TA for the uplink signal transmission, and the uplink signal can be the SRS.
- FIG. 5 is a signaling flowchart of Embodiment 4 of a method for acquiring a TA according to an embodiment of the present invention. As shown in FIG. 5, on the basis of the embodiment shown in FIG. 2, the method for obtaining a TA according to the embodiment of the present invention includes:
- the base station generates an indication message.
- the indication information includes a synchronization difference between the synchronization signal and the base station, and the second carrier and the third carrier are respectively managed by different base stations, for example, the second carrier is managed by the first base station, and the third carrier is configured by the first carrier.
- the second base station performs management.
- the second carrier and the third carrier belong to different TAGs, that is, the TA of the second carrier is different from the TA of the third carrier, and the TA of the third carrier is known, where the third carrier is the transmission PUSCH.
- the carrier that is, the third carrier can be randomly accessed according to the prior art to obtain the TA of the third carrier.
- the base station sends an indication message to the UE.
- the first base station sends an indication message to the UE by using the second carrier
- the second base station sends an indication message to the UE by using the third carrier.
- first base station and the second base station respectively send the indication message at the same time, but there is a difference between the first base station and the second base station timing system, so that there is a synchronization difference between the first base station and the second base station.
- the UE receives an indication message sent by the base station.
- the UE determines a first receiving time of the synchronization signal sent by the third carrier, and determines a second receiving time of the synchronization signal sent by the second carrier.
- the UE determines a TA of the second carrier according to a difference between the second receiving time and the first receiving time, a synchronization difference between the base stations, and a TA of the third carrier.
- the difference between the second receiving time and the first receiving time is t 1
- the TA of the third carrier is t 2
- the synchronization difference between the first base station and the second base station is t 3
- the TA of the second carrier is t 1 + t 2 + t 3 .
- the TA of the second carrier is the downlink TA, but considering the reciprocity of the channel, that is, the characteristics of the uplink channel and the characteristics of the downlink channel are basically the same, that is, the uplink TA and the downlink TA value of the second carrier are the same.
- the uplink TA of the second carrier can be used as the uplink TA for the uplink signal transmission, and the uplink signal can be the SRS.
- FIG. 6 is a flowchart of a method for a method for acquiring a TA according to an embodiment of the present invention. As shown in FIG. 6, the method for acquiring a TA according to an embodiment of the present invention includes:
- the base station when the UE needs to switch from the first carrier to the second carrier, the base station generates an indication message.
- the base station when the base station needs to send uplink data by using the second carrier, for example, sending an SRS, the base station generates an indication message.
- the method for acquiring a TA includes: determining that the second carrier and the third carrier are No, belong to the same time advance group TAG, where the second carrier is a carrier that does not transmit the PUSCH, and if yes, it is determined that the TA of the second carrier is the same as the TA of the third carrier, so that even if the second carrier is a carrier that does not transmit the PUSCH, The TA of the second carrier can also be obtained.
- the third carrier is the same carrier as the first carrier, that is, the third carrier may be the carrier before the handover.
- the third carrier is different from the first carrier, where the third carrier is an uplink carrier, that is, the third carrier can acquire the TA of the third carrier by using an existing physical layer random access technology.
- the uplink signal is an SRS.
- FIG. 7 is a schematic structural diagram of Embodiment 1 of a TA acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus 100 includes a receiver 12 and a processor 11.
- the receiver 12 is configured to receive an indication message sent by the base station.
- the processor 11 is configured to acquire a timing advance TA of the second carrier according to the indication message, where the second carrier is a carrier that does not transmit the PUSCH.
- the apparatus 100 further includes:
- the switch 13 is configured to switch from the first carrier to the second carrier.
- the indication message includes a preamble and/or a transmission resource identifier that needs to be transmitted to the second carrier.
- the transmission resource identifier includes at least one of the following: a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol position identifier, a carrier identifier, and a physical resource block identifier.
- the processor 11 is specifically configured to send a preamble to the base station on the second carrier.
- the processor 11 is specifically configured to receive a response message sent by the base station, where the response information includes a TA of the second carrier and/or a random access power offset.
- the TA is determined by the base station according to the received information of the preamble.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the processor 11 is specifically configured to determine a first receiving time of the synchronization signal sent by the third carrier, and determine a second receiving time of the synchronization signal sent by the second carrier.
- the processor 11 is specifically configured to determine a TA of the second carrier according to a difference between the second receiving time and the first receiving time, and a TA of the third carrier.
- the TA of the second carrier is a downlink TA.
- the downlink TA is used as the uplink TA of the second carrier for uplink signal transmission.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the processor 11 is specifically configured to determine a first receiving time of the synchronization signal sent by the third carrier, and determine a second receiving time of the synchronization signal sent by the second carrier.
- the processor 11 is specifically configured to determine a TA of the second carrier according to a difference between the second receiving time and the first receiving time, a synchronization difference between the base stations, and a TA of the third carrier.
- the third carrier is the same carrier as the first carrier.
- the first carrier and the second carrier are in different time advance group TAGs.
- the response message is a response message that is a new random access response message formed by modifying a payload of the random access response, or a reinterpreted medium access control layer time advancement control unit TA MAC CE, or TA MAC CE, or a new random access response message formed by modifying the frame format of the random access response, or an existing media access control layer control unit MAC CE, or a random access response.
- the receiver 12 is specifically configured to receive an indication message sent by using the second carrier.
- the processor 11 is specifically configured to receive a response message sent by the base station by using the second carrier.
- the indication message further includes: a fourth carrier number or a first carrier number.
- the processor 11 is specifically configured to receive a response message sent by the base station on the fourth carrier or the first carrier.
- the indication information is radio resource control RRC signaling or physical layer signaling.
- the processor 11 is specifically configured to receive a physical downlink control channel PDCCH command sent by the base station.
- the processor 11 is specifically configured to receive a response message sent by the base station, where the response information includes a difference between the TA of the second carrier and the first carrier TA.
- the processor is specifically configured to determine the TA of the second carrier according to the difference between the TA of the second carrier and the first carrier TA, and the TA of the first carrier.
- the indication message further includes: a type information of the response message and/or a time period of the response message information.
- the processor 11 is specifically configured to receive, in a time period, a response message sent by the base station.
- the processor 11 is specifically configured to parse the response message according to the type information of the response message.
- FIG. 8 is a schematic structural diagram of Embodiment 2 of a TA acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus 200 includes: a processor 21
- the processor 21 is configured to determine whether the second carrier and the third carrier belong to the same time advance group TAG, where the second carrier is a carrier that does not transmit the PUSCH.
- the processor is further configured to determine that the TA of the second carrier is the same as the TA of the third carrier.
- the apparatus 200 further includes: a transmitter 22, configured to send an uplink signal on the second carrier according to the TA of the second carrier.
- the uplink signal is a sounding reference signal SRS.
- the apparatus 200 further includes:
- the switch 23 is configured to switch from the first carrier to the second carrier.
- the third carrier is the same carrier as the first carrier.
- the third carrier is different from the first carrier, where the third carrier is an uplink carrier.
- FIG. 9 is a schematic structural diagram of Embodiment 2 of a TA acquiring apparatus according to an embodiment of the present invention.
- the apparatus 300 includes a processor 31 and a transmitter 32.
- the processor 31 is configured to generate an indication message, where the indication message is used to indicate that the user equipment UE acquires the timing advance TA.
- the transmitter 32 is configured to send an indication message to the UE.
- the indication message includes a preamble and a transmission resource identifier that need to be transmitted to the second carrier.
- the transmission resource identifier includes at least one of the following: a subframe identifier, an orthogonal frequency division multiplexing OFDM symbol position identifier, a carrier identifier, and a physical resource block identifier.
- the apparatus 300 further includes:
- the receiver 33 is configured to receive a preamble sent by the UE on the second carrier.
- the transmitter 32 is configured to send a response message to the UE, where the response information includes a TA of the second carrier and/or a random access power offset.
- the processor 31 is further configured to: determine the TA according to the received information of the preamble.
- the indication message includes: a synchronization signal and/or a synchronization difference between the base stations.
- the processor 31 is further configured to:
- the TA of the third carrier determines the TA of the second carrier.
- the processor 31 is further configured to:
- the response message is a response message that is a new random access response message formed by modifying a payload of the random access response, or a reinterpreted medium access control layer time advancement control unit TA MAC CE, or TA MAC CE, or a new random access response message formed by modifying the frame format of the random access response, or an existing media access control layer control unit MAC CE, or a random access response.
- the transmitter 32 is further configured to:
- the transmitter is also used to:
- a response message sent to the UE by the second carrier is a response message sent to the UE by the second carrier.
- the indication message further includes: a fourth carrier number or a first carrier number.
- the transmitter is also used to:
- the response message is sent to the UE through the fourth carrier or the first carrier.
- the indication information is radio resource control RRC signaling or physical layer signaling.
- the transmitter 32 is further configured to:
- the physical downlink control channel PDCCH order is sent to the UE.
- the transmitter 32 is further configured to:
- the response message sent to the UE is used by the UE to determine the TA of the second carrier according to the difference between the TA of the second carrier and the first carrier TA, and the TA of the first carrier.
- the response information includes a difference between the TA of the second carrier and the first carrier TA.
- the indication message further includes: type information of the response message and/or time period information of the response message.
- the transmitter 32 is further configured to:
- a response message is sent to the UE for the UE to receive the response message during the time period.
- the transmitter 32 is further configured to:
- a response message is sent to the UE for the UE to parse the response message according to the type information of the response message.
- the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
- the base station embodiments described above are merely illustrative.
- the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
- the units described as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. .
- Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.
- the described systems, devices, and methods, and the schematic diagrams of various embodiments may be combined or integrated with other systems, modules, techniques or methods without departing from the scope of the present application.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some connections.
- the indirect coupling or communication connection of the port, base station or unit may be in electronic, mechanical or other form.
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Abstract
Description
Claims (110)
- 一种TA获取方法,其特征在于,包括:接收基站发送的指示消息;根据所述指示消息获取所述第二载波的时间提前量TA,所述第二载波为不传输PUSCH的载波。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:从第一载波切换到第二载波。
- 根据权利要求1或2所述的方法,其特征在于,所述指示消息包括需要传输于所述第二载波的前导码和/或传输资源标识。
- 根据权利要求3所述的方法,其特征在于,所述传输资源标识包括以下中的至少一项:子帧标识,正交频分复用OFDM符号位置标识,载波标识和物理资源块标识。
- 根据权利要求3或4所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:在所述第二载波上向所述基站发送所述前导码。
- 根据权利要求3-5任一项所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:接收所述基站发送的响应消息,所述响应信息中包含所述第二载波的TA和/或随机接入功率偏移。
- 根据权利要求3-6任一项所述的方法,所述TA为所述基站根据所述前导码的接收信息确定的。
- 根据权利要求1所述的方法,其特征在于,所述指示消息中包括:同步信号和/或基站间的同步差。
- 根据权利要求8所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:确定通过所述第三载波发送的所述同步信号的第一接收时间,以及,确定通过所述第二载波发送的所述同步信号的第二接收时间。
- 根据权利要求8或9所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:根据所述第二接收时间与所述第一接收时间的差值,以及所述第三载波 的TA,确定所述第二载波的TA。
- 根据权利要求10所述的方法,其特征在于,所述第二载波的TA为下行TA;
- 根据权利要求11所述的方法,其特征在于,将所述下行TA用作第二载波进行上行信号发送的上行TA;
- 根据权利要求2所述的方法,其特征在于,所述指示消息中包括:同步信号和/或基站间的同步差。
- 根据权利要求13所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:确定通过所述第三载波发送的所述同步信号的第一接收时间,以及,确定通过所述第二载波发送的所述同步信号的第二接收时间。
- 根据权利要求13或14所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:根据所述第二接收时间与所述第一接收时间的差值,所述基站间的同步差,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求14-15任一项所述的方法,其特征在于,所述第三载波与所述第一载波为同一载波。
- 根据权利要求2或13或14或15任一项所述的方法,其特征在于,所述第一载波和所述第二载波处于不同的时间提前组TAG。
- 根据权利要求6所述的方法,其特征在于,所述响应消息为通过修改随机接入响应的有效载荷所形成的新的随机接入响应消息,或者,重新解释的媒体接入控制层时间提前控制单元TA MAC CE,或者,TA MAC CE,或者,通过修改随机接入响应的帧格式所形成的新的随机接入响应消息,或者,现有的媒体接入控制层控制单元MAC CE,或者随机接入响应。
- 根据权利要求1-7任一项所述的方法,其特征在于,所述接收基站发送的指示消息,包括:接收通过第二载波发送的指示消息。
- 根据权利要求3-7所述的方法,其特征在于,所述接收所述基站发送的响应消息,包括:接收基站通过第二载波发送的响应消息。
- 根据权利要求6所述的方法,其特征在于,所述指示消息还包括:第四载波编号或者第一载波编号。
- 根据权利要求21所述的方法,其特征在于,所述接收所述基站发送的响应消息,包括:在第四载波或者第一载波上接收基站发送的响应消息。
- 根据权利要求1-22任一项所述的方法,其特征在于,所述指示信息为无线资源控制RRC信令或者物理层信令。
- 根据权利要求3-7任一项所述的方法,其特征在于,所述根据所述指示消息获取所述第二载波的TA,包括:接收基站发送的物理下行控制信道PDCCH命令。
- 根据权利要求3-5任一项所述的方法,其特征在于,所述根据所述指示消息获取第二载波的TA,包括:接收所述基站发送的响应消息,所述响应信息中包含所述第二载波的TA与第一载波TA的差值。
- 根据权利要求25任一项所述的方法,其特征在于,所述根据所述指示消息获取第二载波的TA,包括:根据所述第二载波的TA与第一载波TA的差值,以及所述第一载波的TA,确定所述第二载波的TA。
- 根据权利要求3-7任一项所述的方法,其特征在于,所述指示消息还包括:响应消息的类型信息和/或响应消息的时间段信息。
- 根据权利要求27所述的方法,其特征在于,所述接收所述基站发送的响应消息包括:在所述时间段接收所述基站发送的响应消息。
- 根据权利要求27或28所述的方法,其特征在于,所述接收所述基站发送的响应消息包括:根据所述响应消息的类型信息解析所述响应消息。
- 一种TA获取方法,其特征在于,包括:判断第二载波与第三载波是否属于同一时间提前组TAG,其中,所述第二载波为不传输PUSCH的载波;若是,则确定所述第二载波的TA与所述第三载波的TA相同。
- 根据权利要求30所述的方法,其特征在于,所述方法还包括:根据所述第二载波的TA在所述第二载波上发送上行信号。
- 根据权利要求31所述的方法,其特征在于,所述上行信号为探测参考信号SRS。
- 根据权利要求30-32任一项所述的方法,其特征在于,所述方法还包括:从第一载波切换到第二载波。
- 根据权利要求33所述的方法,其特征在于,所述第三载波与所述第一载波为同一载波。
- 根据权利要求33所述的方法,其特征在于,所述第三载波与所述第一载波不同,其中,所述第三载波为上行载波。
- 一种TA获取方法,其特征在于,包括:生成指示消息,所述指示消息用于指示用户设备UE获取时间提前量TA;向所述UE发送所述指示消息。
- 根据权利要求36所述的方法,其特征在于,所述指示消息包括需要传输于所述第二载波的前导码和/或传输资源标识。
- 根据权利要求37所述的方法,其特征在于,所述传输资源标识包括以下中的至少一项:子帧标识,正交频分复用OFDM符号位置标识,载波标识和物理资源块标识。
- 根据权利要求37或38所述的方法,其特征在于,所述方法还包括:接收UE在第二载波上发送的前导码。
- 根据权利要求39任一项所述的方法,其特征在于,所述方法还包括:向UE发送响应消息,所述响应信息中包含所述第二载波的TA和/或随机接入功率偏移。
- 根据权利要求37-40任一项所述的方法,所述方法还包括:根据所述前导码的接收信息确定所述TA。
- 根据权利要求36所述的方法,其特征在于,所述指示消息中包括:同步信号和/或基站间的同步差。
- 根据权利要求42所述的方法,其特征在于,所述方法还包括:分别通过第三载波和所述第二载波向UE发送所述同步信号,以供UE 根据在所述第三载波接收的所述同步信号的第一接收时间与在所述第二载波接收的所述同步信号的所述第二接收时间的差值,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求42所述的方法,其特征在于,所述方法还包括:分别通过第三载波和所述第二载波向UE发送所述同步信号,以供UE根据在所述第三载波接收的所述同步信号的第一接收时间与在所述第二载波接收的所述同步信号的所述第二接收时间的差值,所述基站间的同步差,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求40所述的方法,其特征在于,所述响应消息为所述响应消息为通过修改随机接入响应的有效载荷所形成的新的随机接入响应消息,或者,重新解释的媒体接入控制层时间提前控制单元TA MAC CE,或者,TA MAC CE,或者,通过修改随机接入响应的帧格式所形成的新的随机接入响应消息,或者,现有的媒体接入控制层控制单元MAC CE,或者随机接入响应。
- 根据权利要求36-41任一项所述的方法,其特征在于,所述方法还包括:通过第二载波向UE发送的指示消息。
- 根据权利要求37-41所述的方法,其特征在于,所述方法还包括:通过第二载波向UE发送的响应消息。
- 根据权利要求40所述的方法,其特征在于,所述指示消息还包括:第四载波编号或者第一载波编号。
- 根据权利要求48所述的方法,其特征在于,所述方法还包括:通过第四载波或者第一载波向UE发送响应消息。
- 根据权利要求36-49任一项所述的方法,其特征在于,所述指示信息为无线资源控制RRC信令或者物理层信令。
- 根据权利要求37-41任一项所述的方法,其特征在于,所述方法还包括:向UE发送物理下行控制信道PDCCH命令。
- 根据权利要求37-39任一项所述的方法,其特征在于,所述方法还包括:向UE发送响应消息以供UE根据所述第二载波的TA与第一载波TA的差值,以及所述第一载波的TA,确定所述第二载波的TA,其中,所述响应信息中包含所述第二载波的TA与第一载波TA的差值。
- 根据权利要求37-41任一项所述的方法,其特征在于,所述指示消息还包括:响应消息的类型信息和/或响应消息的时间段信息。
- 根据权利要求53所述的方法,其特征在于,所述方法还包括:向UE发送响应消息以供UE在所述时间段接收所述响应消息。
- 根据权利要求53或54所述的方法,其特征在于,所述方法还包括:向UE发送响应消息以供UE根据所述响应消息的类型信息解析所述响应消息。
- 一种TA获取装置,其特征在于,包括:接收器,用于接收基站发送的指示消息;处理器,用于根据所述指示消息获取所述第二载波的时间提前量TA,所述第二载波为不传输PUSCH的载波。
- 根据权利要求56所述的装置,其特征在于,还包括:切换器,用于从第一载波切换到第二载波。
- 根据权利要求56或57所述的装置,其特征在于,所述指示消息包括需要传输于所述第二载波的前导码和/或传输资源标识。
- 根据权利要求58所述的装置,其特征在于,所述传输资源标识包括以下中的至少一项:子帧标识,正交频分复用OFDM符号位置标识,载波标识和物理资源块标识。
- 根据权利要求58或59所述的装置,其特征在于,所述处理器具体用于在所述第二载波上向所述基站发送所述前导码。
- 根据权利要求58-60任一项所述的装置,其特征在于,所述处理器具体用于接收所述基站发送的响应消息,所述响应信息中包含所述第二载波的TA和/或随机接入功率偏移。
- 根据权利要求58-61任一项所述的装置,所述TA为所述基站根据所述前导码的接收信息确定的。
- 根据权利要求56所述的装置,其特征在于,所述指示消息中包括:同步信号和/或基站间的同步差。
- 根据权利要求63所述的装置,其特征在于,所述处理器具体用于确定通过所述第三载波发送的所述同步信号的第一接收时间,以及,确定通过所述第二载波发送的所述同步信号的第二接收时间。
- 根据权利要求63或64所述的装置,其特征在于,所述处理器具体用于根据所述第二接收时间与所述第一接收时间的差值,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求65所述的装置,其特征在于,所述第二载波的TA为下行TA。
- 根据权利要求66所述的装置,其特征在于,将所述下行TA用作第二载波进行上行信号发送的上行TA。
- 根据权利要求57所述的装置,其特征在于,所述指示消息中包括:同步信号和/或基站间的同步差。
- 根据权利要求68所述的装置,其特征在于,所述处理器具体用于确定通过所述第三载波发送的所述同步信号的第一接收时间,以及,确定通过所述第二载波发送的所述同步信号的第二接收时间。
- 根据权利要求68或69所述的装置,其特征在于,所述处理器具体用于根据所述第二接收时间与所述第一接收时间的差值,所述基站间的同步差,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求69-70任一项所述的装置,其特征在于,所述第三载波与所述第一载波为同一载波。
- 根据权利要求57或69或70或71任一项所述的装置,其特征在于,所述第一载波和所述第二载波处于不同的时间提前组TAG。
- 根据权利要求61所述的装置,其特征在于,所述响应消息为所述响应消息为通过修改随机接入响应的有效载荷所形成的新的随机接入响应消息,或者,重新解释的媒体接入控制层时间提前控制单元TA MAC CE,或者,TA MAC CE,或者,通过修改随机接入响应的帧格式所形成的新的随机接入响应消息,或者,现有的媒体接入控制层控制单元MAC CE,或者随机接入 响应。
- 根据权利要求56-62任一项所述的装置,其特征在于,所述接收器具体用于接收通过第二载波发送的指示消息。
- 根据权利要求58-62所述的装置,其特征在于,所述处理器具体用于接收基站通过第二载波发送的响应消息。
- 根据权利要求61所述的装置,其特征在于,所述指示消息还包括:第四载波编号或者第一载波编号。
- 根据权利要求76所述的装置,其特征在于,所述处理器具体用于在第四载波或者第一载波上接收基站发送的响应消息。
- 根据权利要求56-77任一项所述的装置,其特征在于,所述指示信息为无线资源控制RRC信令或者物理层信令。
- 根据权利要求58-62任一项所述的装置,其特征在于,所述处理器具体用于接收基站发送的物理下行控制信道PDCCH命令。
- 根据权利要求58-60任一项所述的装置,其特征在于,所述处理器具体用于接收所述基站发送的响应消息,所述响应信息中包含所述第二载波的TA与第一载波TA的差值。
- 根据权利要求80任一项所述的装置,其特征在于,所述处理器具体用于根据所述第二载波的TA与第一载波TA的差值,以及所述第一载波的TA,确定所述第二载波的TA。
- 根据权利要求58-62任一项所述的装置,其特征在于,所述指示消息还包括:响应消息的类型信息和/或响应消息的时间段信息。
- 根据权利要求82所述的装置,其特征在于,所述处理器具体用于在所述时间段接收所述基站发送的响应消息。
- 根据权利要求82或83所述的装置,其特征在于,所述处理器具体用于根据所述响应消息的类型信息解析所述响应消息。
- 一种TA获取装置,其特征在于,包括:处理器,用于判断第二载波与第三载波是否属于同一时间提前组TAG,其中,所述第二载波为不传输PUSCH的载波;若是,则所述处理器还用于确定所述第二载波的TA与所述第三载波的 TA相同。
- 根据权利要求85所述的装置,其特征在于,还包括:发送器,用于根据所述第二载波的TA在所述第二载波上发送上行信号。
- 根据权利要求86所述的装置,其特征在于,所述上行信号为探测参考信号SRS。
- 根据权利要求85-87任一项所述的装置,其特征在于,还包括:切换器,用于从第一载波切换到第二载波。
- 根据权利要求88所述的装置,其特征在于,所述第三载波与所述第一载波为同一载波。
- 根据权利要求88所述的装置,其特征在于,所述第三载波与所述第一载波不同,其中,所述第三载波为上行载波。
- 一种TA获取装置,其特征在于,包括:处理器,用于生成指示消息,所述指示消息用于指示用户设备UE获取时间提前量TA;发送器,用于向所述UE发送所述指示消息。
- 根据权利要求91所述的装置,其特征在于,所述指示消息包括需要传输于所述第二载波的前导码和传输资源标识。
- 根据权利要求92所述的装置,其特征在于,所述传输资源标识包括以下中的至少一项:子帧标识,正交频分复用OFDM符号位置标识,载波标识和物理资源块标识。
- 根据权利要求92或93所述的装置,其特征在于,所述装置还包括:接收器,用于接收UE在第二载波上发送的前导码。
- 根据权利要求94任一项所述的装置,其特征在于,所述发送器还用于:向UE发送响应消息,所述响应信息中包含所述第二载波的TA和/或随机接入功率偏移。
- 根据权利要求92-95任一项所述的装置,所述处理器还用于:根据所述前导码的接收信息确定所述TA。
- 根据权利要求91所述的装置,其特征在于,所述指示消息中包括:同步信号和/或基站间的同步差。
- 根据权利要求97所述的装置,其特征在于,所述处理器还用于:分别通过第三载波和所述第二载波向UE发送所述同步信号,以供UE根据在所述第三载波接收的所述同步信号的第一接收时间与所述第二载波接收的所述同步信号的所述第二接收时间的差值,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求97所述的装置,其特征在于,所述处理器还用于:分别通过第三载波和所述第二载波向UE发送所述同步信号,以供UE根据在所述第三载波接收的所述同步信号的第一接收时间与所述第二载波接收的所述同步信号的所述第二接收时间的差值,所述基站间的同步差,以及所述第三载波的TA,确定所述第二载波的TA。
- 根据权利要求95所述的装置,其特征在于,所述响应消息为所述响应消息为通过修改随机接入响应的有效载荷所形成的新的随机接入响应消息,或者,重新解释的媒体接入控制层时间提前控制单元TA MAC CE,或者,TA MAC CE,或者,通过修改随机接入响应的帧格式所形成的新的随机接入响应消息,或者,现有的媒体接入控制层控制单元MAC CE,或者随机接入响应。
- 根据权利要求92-96任一项所述的装置,其特征在于,所述发送器还用于:通过第二载波向UE发送的指示消息。
- 根据权利要求95-96所述的装置,其特征在于,所述发送器还用于:通过第二载波向UE发送的响应消息。
- 根据权利要求95所述的装置,其特征在于,所述指示消息还包括:第四载波编号或者第一载波编号。
- 根据权利要求103所述的装置,其特征在于,所述发送器还用于:通过第四载波或者第一载波向UE发送响应消息。
- 根据权利要求91-104任一项所述的装置,其特征在于,所述指示信息为无线资源控制RRC信令或者物理层信令。
- 根据权利要求92-96任一项所述的装置,其特征在于,所述发送器还用于:向UE发送物理下行控制信道PDCCH命令。
- 根据权利要求92-94任一项所述的装置,其特征在于,所述发送器还用于:向UE发送的响应消息以供UE根据所述第二载波的TA与第一载波TA的差值,以及所述第一载波的TA,确定所述第二载波的TA。,所述响应信息中包含所述第二载波的TA与第一载波TA的差值。
- 根据权利要求95-96任一项所述的装置,其特征在于,所述指示消息还包括:响应消息的类型信息和/或响应消息的时间段信息。
- 根据权利要求108所述的装置,其特征在于,所述发送器还用于:向UE发送响应消息以供UE在所述时间段接收所述响应消息。
- 根据权利要求108或109所述的装置,其特征在于,所述发送器还用于:向UE发送响应消息以供UE根据所述响应消息的类型信息解析所述响应消息。
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CN102318233A (zh) * | 2009-04-24 | 2012-01-11 | 华为技术有限公司 | 上行同步方法及装置 |
CN101646234A (zh) * | 2009-09-01 | 2010-02-10 | 中兴通讯股份有限公司 | 一种定时提前量的获取方法 |
CN103428786A (zh) * | 2012-05-14 | 2013-12-04 | 上海贝尔股份有限公司 | 一种获得上行传输信息的方法及设备 |
Cited By (1)
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WO2023150955A1 (en) * | 2022-02-10 | 2023-08-17 | Qualcomm Incorporated | Uplink transmission switching for carriers with different timing advance groups |
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CN107624260B (zh) | 2020-10-23 |
US20200322912A1 (en) | 2020-10-08 |
EP3454611A4 (en) | 2019-05-08 |
KR102272581B1 (ko) | 2021-07-02 |
US10986599B2 (en) | 2021-04-20 |
CN107624260A (zh) | 2018-01-23 |
EP3454611A1 (en) | 2019-03-13 |
EP3454611B1 (en) | 2020-08-19 |
JP2019522397A (ja) | 2019-08-08 |
KR20190006538A (ko) | 2019-01-18 |
JP6732050B2 (ja) | 2020-07-29 |
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