CN110958708B

CN110958708B - Signal transmission method, user equipment and network equipment

Info

Publication number: CN110958708B
Application number: CN201811126986.1A
Authority: CN
Inventors: 吴昱民
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-09-26
Filing date: 2018-09-26
Publication date: 2022-02-08
Anticipated expiration: 2038-09-26
Also published as: WO2020063230A1; CN110958708A

Abstract

The embodiment of the invention provides a signal transmission method, user equipment and network equipment, relates to the technical field of communication, and aims to solve the problem that in a scene of sending a request message through a plurality of channels, UE (user equipment) cannot determine how to use TA (timing advance) in a confirmation message. The method comprises the following steps: determining a target timing advance TA; sending a first uplink signal through a first target channel by adopting the target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA that transmits the second uplink signal through a second target channel, where the second target channel is one of multiple channels, and the multiple channels are channels through which the UE transmits the second uplink signal to the network device.

Description

Signal transmission method, user equipment and network equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a signal transmission method, user equipment and network equipment.

Background

At present, after a User Equipment (UE) initiates a two-step random access (2-step RACH) procedure, the UE may send a request message requesting to establish a connection with a network device to the network device through a channel, and after the network device agrees to establish a connection with the UE, may send a confirmation message to the UE. In order to avoid interference between uplink signals transmitted by different UEs, the network device may carry different Timing Advance (TA) in an acknowledgement message transmitted to each UE. After receiving the acknowledgement message, if the UE needs to send the uplink signal, the UE may send the uplink signal in advance of the TA in the acknowledgement message on the subframe with the same number as the subframe in each radio frame where the UE receives the acknowledgement message.

However, during the process of initiating the 2-step RACH, the UE may send a request message to the network device through multiple channels, for example, the UE may send 2 request messages to the network device through a Physical Uplink Shared Channel (PUSCH) and a Physical Random Access Channel (PRACH). As such, the UE may receive multiple acknowledgement messages, and after the UE determines a valid acknowledgement message, the UE may not determine how to use the TA in the acknowledgement message.

Disclosure of Invention

Embodiments of the present invention provide a signal transmission method, user equipment, and network equipment, so as to solve a problem that in a scenario where a request message is sent through multiple channels, a UE cannot determine how to use a TA in an acknowledgment message.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a signal transmission method, which is applied to a user equipment UE, and the signal transmission method includes: determining a target TA; sending a first uplink signal through a first target channel by adopting the target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA in which the UE sends the second uplink signal through a second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

In a second aspect, an embodiment of the present invention provides a signal transmission method, which is applied to a network device, and the signal transmission method includes: sending a downlink signal to User Equipment (UE), wherein the downlink signal comprises a first TA and first indication information, the first indication information is used for indicating the UE to use a TA which sends a second uplink signal through a second target channel as a second TA, the first TA and the second TA are used for determining the target TA by the UE, the target TA is used for sending the first uplink signal through the first target channel by the UE, the second target channel is one of a plurality of channels, and the plurality of channels are channels through which the UE sends the second uplink signal to the network equipment.

In a third aspect, an embodiment of the present invention further provides a UE, where the UE includes a determining module and a sending module; the determining module is used for determining a target TA; the sending module is configured to send a first uplink signal through a first target channel by using the target TA determined by the determining module; wherein, the target TA is a weighted value of the first TA and the second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA in which the UE sends a second uplink signal through a second target channel, where the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

In a fourth aspect, an embodiment of the present invention further provides a network device, where the network device includes a sending module; the sending module is configured to send a downlink signal to a UE, where the downlink signal includes a first timing advance TA and first indication information, the first indication information is used to indicate that the UE uses a TA that sends a second uplink signal through a second target channel as a second TA, the first TA and the second TA are used by the UE to determine the target TA, the target TA is used by the UE to send a first uplink signal through a first target channel, the second target channel is one of multiple channels, and the multiple channels are channels through which the UE sends the second uplink signal to the network device.

In a fifth aspect, an embodiment of the present invention provides a UE, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the signal transmission method according to the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the computer program is executed by the processor, the steps of the signal transmission method according to the second aspect are implemented.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the signal transmission method according to the first aspect or the second aspect.

In the embodiment of the invention, UE firstly determines a target TA, and then the UE sends a first uplink signal on a first target channel according to the target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network equipment; the second TA is a TA in which the UE sends the second uplink signal through the second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device. According to the scheme, the target TA is determined by the UE according to the weighted value of the first TA and the second TA sent by the network equipment, or the UE directly determines the first TA sent by the network equipment as the target TA, so that the UE can send the first uplink signal by adopting the target TA determined according to the first TA.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 3 is a second schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of a ue according to a second embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 7 is a third schematic structural diagram of a ue according to various embodiments of the present invention;

fig. 8 is a second schematic structural diagram of a network device according to various embodiments of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme provided by the invention can be applied to various communication systems, such as a 5G communication system, a future evolution system or a plurality of communication convergence systems and the like. A variety of application scenarios may be included, for example, scenarios such as Machine to Machine (M2M), D2M, macro and micro Communication, enhanced Mobile Broadband (eMBB), ultra high reliability and ultra Low Latency Communication (urrllc), and mass internet of things Communication (mtc). These scenarios include, but are not limited to: the communication between the user equipment and the user equipment, the communication between the network equipment and the network equipment, the communication between the network equipment and the user equipment, and the like. The embodiment of the invention can be applied to the communication between the network equipment and the user equipment in the 5G communication system, or the communication between the user equipment and the user equipment, or the communication between the network equipment and the network equipment.

Fig. 1 shows a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system includes at least one network device 100 (only one shown in fig. 1) and one or more user devices 101 to which each network device 100 is connected.

The network device 100 may be a base station, a core network device, a Transmission and Reception node (TRP), a relay station, an access Point, or the like. The network device 100 may be a Base Transceiver Station (BTS) in a Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA) network, or may be an nb (nodeb) in Wideband Code Division Multiple Access (WCDMA), or may be an eNB or enodeb (evolved nodeb) in LTE. The Network device 100 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device 100 may also be a network device in a 5G communication system or a network device in a future evolution network. The words used are not to be construed as limitations of the invention.

The user equipment 101 may be a wireless user equipment or a wired user equipment, which may be a device providing voice and/or other service data connectivity to a user, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user equipment in a future 5G network or a user equipment in a future evolved PLMN network, etc. A Wireless user equipment, which may be a mobile user equipment such as a mobile phone (or "cellular" phone) and a computer with a mobile user equipment (e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device) that exchanges language and/or data with a Radio Access Network (RAN), a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), etc., may also be a mobile device, a user equipment, an Access user equipment, a Wireless Communication device, a user equipment unit (ue unit), a core Network (cn), a core Network (RAN), or a core Network (cn) User equipment Station, Mobile Station (Mobile Station), Mobile Station (Mobile), Remote Station (Remote Station), Remote Station, Remote User equipment (Remote Terminal), Subscriber Unit (Subscriber Unit), Subscriber Station (Subscriber Station), User Agent (User Agent), User equipment device, and the like. As an example, in the embodiment of the present invention, fig. 1 illustrates that the user equipment is a mobile phone.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". The term "plurality" herein means two or more, unless otherwise specified.

For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used to distinguish the same items or similar items with basically the same functions or actions, and those skilled in the art can understand that the words "first", "second", and the like do not limit the quantity and execution order.

It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The signal transmission method according to the embodiment of the present invention is described below with reference to fig. 2. Fig. 2 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention, as shown in fig. 2, the signal transmission method includes steps 201 and 202:

step 201, the UE determines a target TA.

Step 202, the UE sends a first uplink signal through a first target channel by using the target TA.

The target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA in which the UE sends the second uplink signal through the second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

When the target TA is a weighted value of the first TA and the second TA, the first TA is one TA adjustment amount, and when the target TA is the first TA, the first TA is one TA value.

It should be noted that, when the UE uses the target TA to transmit the first uplink signal on the first target channel, the UE starts to transmit the first uplink signal at the configured uplink timeslot earlier than the target TA.

Optionally, the first uplink signal may be any one of a PRACH signal, a PUCCH signal, a physical uplink control channel (PUSCH) signal, a Sounding Reference Signal (SRS), and the like.

It is understood that "PRACH signal" refers to a signal transmitted through a PRACH, "PUSCH signal" refers to a signal transmitted through a PUSCH, and "PUCCH signal" refers to a signal transmitted through a PUCCH. The PUSCH may be used as a transmission data signal channel, and the PRACH may be used as a transmission control signal channel.

It should be noted that the first target channel may be the second target channel, and may also include other channels, which is not specifically limited in this embodiment of the present invention.

According to the UE provided by the embodiment of the invention, the UE firstly determines the target TA, and then the UE sends a first uplink signal on a first target channel according to the target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network equipment; the second TA is a TA in which the UE sends the second uplink signal through the second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device. According to the scheme, the target TA is determined by the UE according to the weighted value of the first TA and the second TA sent by the network equipment, or the UE directly determines the first TA sent by the network equipment as the target TA, so that the UE can send the first uplink signal by adopting the target TA determined according to the first TA.

In a possible implementation manner, before step 201, the signal transmission method provided in the embodiment of the present invention further includes step 203:

step 203, the UE receives a downlink signal sent by the network device, where the downlink signal includes the first TA.

Further step 201 may be performed by step 201 a:

step 201a, the UE determines a target TA according to the first TA.

Optionally, the UE may determine the target TA according to a weighted value of the first TA and the second TA; the UE may also take the first TA as a target TA; the embodiment of the present invention is not particularly limited thereto.

Optionally, the UE may determine the target TA according to the following rule:

rule one is as follows: and the UE determines the target TA according to the TA for sending the second uplink signal in the target channel and the weighted value of the first TA. Wherein the target channel is one of a plurality of channels transmitting the second uplink signal.

Rule two: if the downlink signal transmitted by the network side device for the second uplink signal only includes the indication information indicating the target channel, the UE determines the target TA according to the TA of the second uplink signal transmitted on the target channel and the weighted value of the first TA.

Rule three: if the downlink signal sent by the network side device for the second uplink signal includes indication information indicating a plurality of target channels, the UE determines the target TA according to a second TA for sending the second uplink signal on one target channel and a weighted value of the first TA, where the one target channel is one of the plurality of target channels of the sent second uplink signal.

Rule four: if the downlink signal sent by the network side device for the second uplink signal includes a first identifier indicating a target channel, where the first identifier is used to indicate which channel the UE uses to determine the target TA for the second uplink signal sent on, the UE determines the target TA according to the TA indicated by the first identifier for sending the second uplink signal on the target channel and the weighted value of the first TA.

Rule five: and the UE uses a second TA of the downlink signal sent by the network side equipment aiming at the second uplink signal as a target TA.

In the embodiment of the present invention, since it is provided that the UE determines the target TA according to the first TA included in the downlink signal sent by the network side device by using the rules from the first rule to the fifth rule, where the target TA is a weighted value of the first TA and the second TA or the first TA, and the UE may send the first uplink signal according to the target TA, based on the scheme, it may be solved that, in a scenario where a request message is sent through multiple channels in the prior art, the UE may determine how to use the TA in the acknowledgment message. In a possible implementation manner, before step 203, the signal transmission method provided in the embodiment of the present invention further includes step 204:

step 204, the UE sends the second uplink signal to the network device through a plurality of channels, respectively.

Based on the scheme, the UE can respectively send the second uplink signals to the network equipment in a plurality of channels, and the probability that the second uplink signals sent by the UE are received by the network equipment can be improved.

Optionally, the second target channel is any one of: one of the plurality of channels (i.e., the plurality of channels through which the UE transmits the second uplink signal to the network device), one of the plurality of channels indicated by the network device in the downlink signal, and one of at least two channels indicated by the network device in the downlink signal, where the at least two channels are channels of the plurality of channels.

It should be noted that, when the second target channel is one of the plurality of channels, the second target channel may be one of the plurality of channels determined by the UE. When the second target channel is one of the at least two channels indicated by the downlink signal, the second target channel may be one of the at least two channels indicated by the downlink signal, which is determined by the UE by the network device.

It should be noted that the second target channel may be one of a plurality of channels through which the UE transmits the second uplink signal.

For example, the UE transmits the random access request message through the PRACH and the PUSCH, and if the PRACH is selected as the second target channel, the second TA may be a TA of the random access request message transmitted on the PRACH, and if the PUSCH is selected as the second target channel, the second TA may be a TA of the random access request message transmitted on the PUSCH.

It should be noted that the UE may determine, according to the indication information carried in the downlink signal, that the channel indicated by the downlink signal is the second target channel.

For example, it is assumed that an access request message sent by the UE to the network device carries a random sequence indicator (preamble identifier) in a random access process, and if the UE can acquire the preamble identifier carried by the request sent by the UE from an acknowledgement request message received by the network device, the UE can determine that a channel indicated in the downlink signal is a PRACH. The UE may obtain the contention resolution information from the received acknowledgement request message, and may obtain an identifier that the contention resolution of the UE is successful, so that the UE may determine that the channel indicated in the acknowledgement request message is the PUSCH. The UE carries a UE identity, such as a cell radio network temporary identity (C-RNTI), in the sent access request message, and if the UE can obtain the UE identity from the received acknowledgement request message, the UE may determine that a channel indicated in the downlink signal is a PUSCH.

If the UE determines the first identifier position 1 from the downlink message received by the network device, the UE may determine that the channel indicated by the downlink message is the PUSCH. If the UE determines the first identifier position 0 in the downlink message received from the network device, the UE may determine that the channel indicated by the first identifier in the downlink signal is the PRACH.

It should be noted that the UE may determine, according to the identifier carried in the downlink signal, that one of the multiple channels indicated by the downlink signal is the second target channel.

For example, assuming that, in the random access process, an access request message sent by the UE to the network device carries a preamble identifier and a C-RNTI, the UE may use the PRACH indicated by the preamble identifier or the PUSCH indicated by the C-RNTI as the second target channel.

In the signal transmission method provided in the embodiment of the present invention, the UE may determine the second target channel to one of the multiple channels, one channel indicated by the network device in the downlink signal, and one of at least two channels indicated by the multiple channels indicated by the network device in the downlink signal, and the UE may use any one of the second target channel to send the TA of the second uplink signal and the first TA to determine the target TA.

In a possible implementation manner, in the signal transmission method provided in the embodiment of the present invention, the step 202 may specifically be executed by the step 202 a:

step 202a, the UE sends a first uplink signal through a first target channel in a cell or a cell group corresponding to the target TA by using the target TA.

It should be noted that the cell group corresponding to the target TA may include one cell, or may include multiple cells, and each cell includes the first target channel.

For example, cell group 1 (cell 1, cell 2) corresponds to the third TA, and after the target TA is calculated, the third TA is updated to the target TA. And the UE adopts the target TA and sends a first uplink signal through a first target channel.

It can be understood that, after the UE determines a target TA, the UE may send a first uplink signal through a first target channel using the target TA in the cell group.

Optionally, the second uplink signal is an access request message, and the downlink signal is an access confirmation message or an access response message. The UE may transmit the first uplink signal using the target TA according to rules a-E described below.

Optionally, the UE requests to access an access request message of the network device, which may specifically be a random access request message in a random access process; the network device determines an access confirmation message that the UE accesses the network device, which may specifically be a random access confirmation message in a random access process.

Rule A: when the UE is in an IDLE state (IDLE) or a deactivated state (INACTIVE) in the process of accessing the network device, the first uplink signal is a feedback message for the UE to the access confirmation message.

For example, assuming that the UE sends MsgA through multiple channels to attempt to access the network device for the first time, after receiving MsgB, if the UE needs to send a feedback message to the access confirmation message, the UE uses the target TA only for sending the feedback message of MsgB received in the random access process. The "feedback message to the access confirmation message" may be an indication message (ACK) indicating that the UE successfully receives the MsgB, or may be an indication message (NACK) indicating that the UE fails to receive the MsgB. After the UE attempts to access the network device for the first time, if the UE sends MsgA through multiple channels again to attempt to access the network device randomly, the UE does not use the target TA to send the first uplink signal (e.g., stops the TAT timer).

It can be understood that the UE and the network device may agree that, when the UE is in an idle state or in a deactivated state in the process of accessing the network device this time, the target TA may be used to send a feedback message of the UE to the access request message received this time to the network device.

Rule B: under the condition that the UE is in an idle state or a deactivated state in the process of accessing the network equipment at this time, the first uplink signal is an access request message sent by the UE in the process of accessing the network equipment at the next time.

Generally, if the UE is in an idle state or a deactivated state in the process of accessing the network device, the access process is a contention access process.

Exemplarily, it is assumed that the UE sends MsgA through multiple channels to attempt random access to the network device for the first time, and after receiving MsgB, if the UE is in an IDLE state or an INACTIVE state in the process of randomly accessing the network device this time, and the random access process for the first time is not completed; when the UE attempts random access to the network device for a second time, the UE may send MsgA again using the target TA.

Optionally, the UE may send MsgA again through any one of multiple channels using the target TA, for example, PRACH or PUSCH, or may send MsgA again through PRACH or PUSCH using the target TA.

Based on the scheme, the UE can use the access request message sent by the target TA in the process of accessing the network device next time when the UE is in the idle state or the deactivated state in the process of accessing the network device this time.

Rule C: and under the condition that the UE is in a connected state in the process of accessing the network equipment at this time and the UE accesses the network equipment in a competition mode, the first uplink signal is a feedback message of the UE for the access confirmation message.

For example, if a random access procedure is a contention random access procedure, assuming that the UE sends MsgA through multiple channels to attempt random access to the network device for the first time, after receiving MsgB, if the UE needs to send a feedback message to the access confirmation message, the UE uses the target TA only to send the feedback message of MsgB of the random access attempt. After the UE attempts random access to the network device for the first time, if the UE attempts random access to the network device again, the UE does not use the target TA (e.g., stops the TAT timer).

Based on the scheme, under the condition that the UE is in a connected state in the process of accessing the network equipment and the UE accesses the network equipment in a competition mode, the UE can use the target TA to send a feedback message of the UE on the access confirmation message received this time to the network equipment.

Rule D: and under the condition that the UE is in a connected state in the process of accessing the network equipment at this time and the UE accesses the network equipment in a competition mode, the first uplink signal is an access request message sent by the UE in the process of accessing the network equipment at the next time.

For example, if a random access process is a contention random access process, assuming that the UE sends MsgA through multiple channels to try random access to the network device for the first time, the UE is in a connected state during the process of accessing the network device this time, and after receiving MsgB, if the first attempt to access the network device is not completed, the UE may send MsgA to the network device using the target TA when trying to access the network device again.

Optionally, the UE may send MsgA through any one or more of the plurality of channels using the target TA during the next access to the network device.

Based on the scheme, under the condition that the UE is in a connected state in the process of accessing the network equipment at this time and the UE accesses the network equipment in a competition mode, the UE can use the target TA to send the access request message in the process of accessing the network equipment at the next time.

Rule E: when the process of accessing the network device by the UE is successfully completed, the first uplink signals are all uplink signals sent to the network device when the UE is in the connected state, and the first uplink signals are uplink signals corresponding to the channel type indicated in the reception acknowledgement message.

For example, the current random access process is a non-contention random access process, the UE is in a CONNECTED state (i.e., a CONNECTED state) in the current random access process of the network device, and after the current random access process is successfully completed, the UE may send an uplink signal corresponding to a channel type indicated in the MsgB by using a determined target TA, for example, send an uplink signal of a PUSCH, a PUCCH, or an SRS according to the target TA.

For example, the current random access process is a contention random access process, the UE is in a CONNECTED state in the current random access process to the network device, and after the current random access process is successfully completed, the UE may send an uplink signal corresponding to a channel type indicated in the MsgB by using a determined target TA, for example, the channel type indicated in the MsgB includes a channel of an uplink signal of a PUSCH, a PUCCH, and an SRS, and then the UE may send the uplink signal of the PUSCH, the PUCCH, and the SRS according to the target TA.

It should be noted that, the preamble ID or the UE ID in the MsgA carried in the MsgB may indicate that the process of the UE accessing the network device is successfully completed.

Optionally, when the UE sends the uplink signal of the PUSCH, the UE may adopt an initial TA or may also adopt a target TA, which is not specifically limited in this embodiment of the present invention.

It can be understood that, if the process of accessing the network device is successfully completed, the UE may use all uplink signals sent by the target TA to the network device in the case that the UE is in the connected state after the access is completed.

The following is a description of rules F and G for a UE not to use a target TA determined by the UE:

rule F: under the condition that the UE is in an idle state or a deactivated state after the process of accessing the network device is completed, the target TA determined by the UE is no longer used for transmitting the uplink signal after the access process.

Rule G: under the condition that the process of accessing the network equipment by the UE is not successfully completed, the uplink signal subsequently sent by the UE does not use the target TA determined by the UE in the random access process.

For example, if the random access procedure is a non-contention random access procedure, the UE is in a CONNECTED state (i.e., a CONNECTED state) in the process of randomly accessing the network device this time, and the random access procedure is not successfully completed, then the uplink signal subsequently sent by the UE does not use the target TA determined by the UE in the random access procedure this time. If the random access process is a competitive random access process, the UE is in a CONNECTED state (i.e., a CONNECTED state) in the process of randomly accessing the network device, and the random access process is not successfully completed, then the uplink signal subsequently sent by the UE does not use the target TA determined by the UE in the random access process.

It is to be understood that the UE may no longer transmit the first uplink signal using the target TA in the above case.

Generally, the network device may set a timer (TAT) for a target TA value used by the UE, and before the timer expires, if the UE acquires a new TA value, the UE may start or restart the TAT.

The following describes the signal transmission method provided by the embodiment of the present invention in a manner of interaction between the UE and the network side device. For convenience of description, the UE requests the random access network device, and the UE sends the access request message through the first channel and the second channel.

In a possible implementation manner, the signal transmission method in the embodiment of the present invention may include step T:

and T: the network equipment sends downlink signals to the user equipment UE.

The downlink signal includes a first Timing Advance (TA) and first indication information, the first indication information is used for indicating the UE to use the TA which sends the second uplink signal through a second target channel as a second TA, the first TA and the second TA are used for the UE to determine the target TA, the target TA is used for the UE to send the first uplink signal through the first target channel, the second target channel is one of a plurality of channels, and the plurality of channels are channels through which the UE sends the second uplink signal to the network device.

Based on the scheme, the network device may send a downlink signal to the UE, the UE may determine the first timing advance TA and the first indication information by receiving the downlink signal, and the UE determines the target TA according to the first timing advance TA and the TA indicated by the first indication information.

Fig. 3 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention, and as shown in fig. 3, the signal transmission method includes steps 301 to 306:

step 301, the UE sends an access request message to the network device on the first channel and the second channel, respectively.

It should be noted that, in the embodiment of the present invention, the UE may send the access request message to the network device on two or more channels, where the first channel and the second channel may be other channels such as a PUSCH, a PRACH, a PUCCH, and a channel for sending an SRS, and this is not specifically limited in the embodiment of the present invention.

In the embodiment of the present invention, the access request message may be sent using more than two channels, each channel may default to one initial TA value, for example, the initial TA values corresponding to the PRACH, PUSCH, PUCCH, and SRS may be 0, or one TA value may be estimated according to parameters such as downlink path loss.

Specifically, the UE sends an access request message on the first channel according to an initial TA of the first channel; and, the UE transmits an access request message on the second channel according to the initial TA of the second channel.

Generally, the initial TAs of different channels may be different, that is, which channel the UE uses to send the access request message, and when a subsequent uplink signal (i.e., a first uplink signal) is sent, the TA corresponding to the channel may be extended to send the uplink signal.

It should be noted that, in the embodiment of the present invention, the same UE sends information on different channels in different sending time slots.

Step 302, the network device receives an access request message.

Generally, after receiving an access request message, a network device determines whether a UE accesses the network device according to the access request message and a resource usage situation.

It should be noted that the network device may receive the access request message from the UE on the first channel, the network device may also receive the access request message from the UE on the second channel, and the network device may also receive the access request message from the UE on both the first channel and the second channel, which is not limited in this embodiment of the present invention.

Correspondingly, the network device may determine the information carried in the access confirmation message sent to the UE according to the received access request message and the real-time resource occupation condition.

Step 303, the network device sends an access determination message to the UE.

The access determining message is used for indicating the UE to access the network equipment, and the access determining message comprises the first TA.

It should be noted that, after the network device determines that the UE cannot access the network device, the network device sends an acknowledgement message to the UE to indicate that the UE does not access the network device, where the acknowledgement message does not include the first TA.

Step 304, the UE receives the access determination message from the network device.

It should be noted that the UE may receive a plurality of messages for confirming that the UE accesses the network device from the network device, and the access determination message is a valid access confirmation message determined by the UE from the plurality of received messages for confirming that the UE accesses the network device.

Optionally, the access determination message may indicate a type of the first uplink signal, where the type of the first uplink signal is a type of the first uplink signal that the network device indicates the UE may send. For example, the first uplink signal instructed to be transmitted in the access acknowledgement message may be any one of a PRACH signal, a PUCCH signal, a physical uplink control channel (PUSCH) signal, a Sounding Reference Signal (SRS), and the like.

Step 305, the UE determines a target TA according to the first TA, where the target TA is a weighted value of the first TA and the second TA or the first TA.

The second TA is a TA corresponding to the first target channel, the first target channel is a channel through which the UE sends an access confirmation message to the network device, and the access confirmation message is used to request access to the network device.

Next, the UE will briefly describe "the UE determines the weighted value of the first TA and the second TA as the target TA". It is understood that the UE may calculate the target TA according to a ratio of the first TA and the second TA, or may determine the target TA according to a sum of the first TA and the second TA. For convenience of explanation, it is assumed that the first channel is PRACH, the second channel is PUSCH, the access request message is MsgA, the access confirmation message is MsgB, and the first TA is TA_relativeThe second TA is TA_MsgAThe target TA is TA_new. Namely, TA_new＝K₁TA_relative+K₂TA_MsgA。

Below with K₁＝1，K₂The UE will now take the sum of the first TA and the second TA, and then determine the target TA according to rules one to five.

Rule 1 (corresponding to rule one): and the UE determines the target TA according to the sum of the TA value of the target channel when the MsgA is sent and the first TA. The target channel is PRACH or PUSCH.

For example, the UE employs a TA value (i.e., TA) to send MsgA over PRACH_msgA＝TA_PRACH) And the sum of the first TA determines the target TA, i.e. TA_new＝TA_relative+TA_PRACH。

Alternatively, the UE employs a TA value (i.e., TA) to send MsgA over PUSCH_msgA＝TA_PUSCH) And the sum of the first TA determines the target TA, i.e. TA_new＝TA_relative+TA_PUSCH。

It should be noted that, at the time of the first random access, the TA value when the UE transmits MsgA through the target channel is the initial TA value of the uplink message transmitted through the target channel, and after confirming the target TA value according to the initial value, if the UE receives a second TA again, if the TA value of the uplink signal transmitted through the target channel is continuously used, a new target TA is determined for the UE according to the last determined target TA and the newly received second TA.

It can be understood that the UE may determine the target TA according to the PRACH in the transmission request message or the sum of the TA value of the MsgA transmitted by the PRACH and the first TA, and may enable the UE to transmit the first uplink signal according to the determined target TA.

Rule 2 (corresponding to rule two): and if the MsgB only comprises the indication information for determining the target channel, the UE determines the target TA by adopting the sum of the TA for sending the MsgA of the target channel and the first TA.

If the MsgB only includes indication information that the UE sends MsgA using PRACH (for example, the MsgB includes a preamble identifier in MsgA sent by the UE), the UE determines a target TA, that is, TA, which is a sum of TA sending MsgA using PRACH and the first TA, where the TA is the target TA_new＝TA_relative+TA_PRACH. It can be understood that, under rule 2, when the UE sends the request information to the network device through the multiple channels including the PRACH, if the acknowledgment request message received by the UE includes an indication that the UE sends the access request message through the PRACH, the TA value of the request message sent by using the PRACH may be used as the second TA.

If the MsgB only comprises the indication information that the UE sends the MsgA by using the PUSCH, the UE determines the target TA (timing advance), namely TA (timing advance) by using the sum of the TA value of the sent MsgA by using the PUSCH and the first TA_new＝TA_relative+TA_PUSCH. For example, the MsgB includes contention resolution information, and the UE contention resolution succeeds. Or the MsgB comprises the UE identity sent by the UE in the MsgA.

Rule 3 (corresponding to rule three): if the MsgB comprises the indication information that the UE sends the MsgA by adopting the PUSCH and the indication information that the UE sends the MsgA by adopting the PRACH, the UE determines the target TA according to the sum of the TA value of the MsgA sent by the target channel and the first TA. The target channel may be a PRACH channel or a PUSCH, which is not specifically limited in this embodiment of the present invention.

If the MsgB comprises the indication information that the UE sends the MsgA by adopting the PRACH and the indication information that the UE sends the MsgA by adopting the PUSCH, the sum of the TA value of the MsgA sent by the UE by adopting the PRACH and the first TA determines the target TA, namely the TA_new＝TA_relative+TA_PRACH。

If the MsgB comprises indication information that the UE sends the MsgA through the PRACH and indication information that the UE sends the MsgA through the PUSCH, the UE determines a target TA (timing advance) by the sum of the TA value of the MsgA sent by the PUSCH and the first TA, namely the TA_new＝TA_relative+TA_PUSCH。

Rule 4 (corresponding to rule four): if the MsgB carries the first flag, the first flag is used to indicate which channel of the TA of the access request message is used by the UE when determining the target TA.

For example, a first identifier of 1bit is used in the MsgB, and if the first identifier is set to 1, the first identifier indicates that the UE determines the target TA, that is, the TA, by using the sum of the TA of the MsgA and the first TA sent on the PUSCH when calculating the target TA, that is, the TA_new＝TA_relative+TA_PUSCHIf the first identifier is set to 0, the first identifier indicates that the UE determines the target TA by using the sum of the TA of the MSgA sent by the PRACH and the first TA when calculating the target TA, namely the TA_new＝TA_relative+TA_PRACH。

It should be noted that the above example only illustrates two channels, and two or more channels may be used in practical applications. The first flag may be 2 bits, and 00, 01, 10, and 11 may be used to indicate a TA that transmits MsgA using a different channel.

The following description is directed to "UE determines the first TA as the target TA":

rule 5 (corresponding to rule five): TA carried in MsgB_relativeIs a target TA, i.e. TA_new＝TA_relative。

It can be understood that under the rule 5, no matter which channel of TA is used when the UE transmits the second uplink signal, after receiving the TA transmitted by the network device, the UE determines the TA transmitted by the network device as the target TA.

It should be noted that, in the embodiment of the present invention, the network device and the UE need to agree on the same calculation rule, so as to reduce the interference of the uplink signal.

Step 306, the UE sends the first uplink signal through the first target channel by using the target TA.

It should be noted that, after the UE determines the target TA, the UE may send the first uplink signal in advance of the target TA on a subframe with the same number as that of the subframe in each radio frame for sending the uplink signal according to the subframe of the received acknowledgement access message.

The UE may use a channel for sending the second uplink signal to send the first uplink signal, and may also send a subsequent uplink signal in another channel.

In the signal transmission method provided by the embodiment of the present invention, first, the UE determines a target TA, and the UE transmits a first uplink signal on a first target channel by using the target TA. The target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA of a second target channel, the second target channel is one of multiple channels, and the multiple channels are channels through which the UE sends a second uplink signal to the network device. According to the scheme, the target TA is determined by the UE according to the weighted value of the first TA and the second TA sent by the network equipment, or the UE directly determines the first TA sent by the network equipment as the target TA, so that the UE can send the first uplink signal by adopting the target TA determined according to the first TA.

Fig. 4 is a schematic diagram of a possible structure of a UE according to an embodiment of the present invention, and as shown in fig. 4, a UE400 includes: a determining module 401 and a sending module 402; a determining module 401, configured to determine a target TA; a sending module 402, configured to send a first uplink signal through a first target channel by using the target TA determined by the determining module 401; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network equipment; the second TA is a TA in which the UE sends the second uplink signal through the second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

Optionally, as shown in fig. 5 in conjunction with fig. 4, the UE400 further includes a receiving module 403; a receiving module 403, configured to receive a downlink signal sent by the network device before the determining module 401 determines the target TA, where the downlink signal includes a first TA; the determining module 401 is specifically configured to determine the target TA according to the first TA received by the receiving module 403.

Optionally, the sending module 402 is further configured to send, before the receiving module 403 receives the downlink signal sent by the network device, second uplink signals to the network device through a plurality of channels respectively.

Optionally, the second target channel is any one of: one of the plurality of channels, one of the plurality of channels indicated by the network device in the downlink signal, and one of at least two channels indicated by the network device in the downlink signal, the at least two channels being ones of the plurality of channels.

Optionally, the sending module 402 is specifically configured to: by using the target TA, the first uplink signal is sent through the first target channel in the cell or the cell group corresponding to the target TA determined by the determining module 401.

Optionally, the second uplink signal is an access request message, and the downlink signal is an access confirmation message; in the case that the UE400 is in an idle state or a deactivated state in the process of accessing the network device this time, the first uplink signal is a feedback message of the UE400 to the access confirmation message, or an access request message sent by the UE400 in the process of accessing the network device next time; or, in the case that the UE400 is in a connected state in the process of accessing the network device this time and the UE400 accesses the network device in a contention mode, the first uplink signal is a feedback message of the UE400 for the access confirmation message, or an access request message sent by the UE400 in the process of accessing the network device next time; or, when the process of the UE400 accessing the network device is successfully completed, and the first uplink signal is all uplink signals sent to the network device when the UE400 is in the connected state, where the first uplink signal is an uplink signal corresponding to the channel type indicated in the access acknowledgement message.

The UE400 provided in the embodiment of the present invention can implement each process implemented by the UE in the foregoing method embodiments, and is not described here again to avoid repetition.

According to the UE provided by the embodiment of the invention, the UE firstly determines the target TA, and then the UE sends a first uplink signal on a first target channel according to the target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA that transmits the second uplink signal through a second target channel, where the second target channel is one of multiple channels, and the multiple channels are channels through which the UE transmits the second uplink signal to the network device. According to the scheme, the target TA is determined by the UE according to the weighted value of the first TA and the second TA sent by the network equipment, or the UE directly determines the first TA sent by the network equipment as the target TA, so that the UE can send the first uplink signal by adopting the target TA determined according to the first TA.

Fig. 6 is a schematic diagram of a possible structure of a network device according to an embodiment of the present invention, and as shown in fig. 6, a network device 500 includes a sending module 501; a sending module 501, configured to send a downlink signal to a user equipment UE, where the downlink signal includes a first timing advance TA and first indication information, the first indication information is used to indicate that the UE uses a TA that sends a second uplink signal through a second target channel as a second TA, the first TA and the second TA are used for the UE to determine the target TA, the target TA is used for the UE to send the first uplink signal through the first target channel, the second target channel is one of multiple channels, and the multiple channels are channels through which the UE sends the second uplink signal to a network device.

In the network device provided by the embodiment of the present invention, the network device may send a downlink signal to the UE, the UE may determine the first timing advance TA and the first indication information by receiving the downlink signal, and the UE determines the target TA according to the first timing advance TA and the TA indicated by the first indication information. According to the scheme, the target TA is determined by the UE according to the weighted value of the first TA and the second TA sent by the network equipment, or the UE directly determines the first TA sent by the network equipment as the target TA, so that the UE can send the first uplink signal by adopting the target TA determined according to the first TA

Fig. 7 is a schematic hardware structure diagram of a user equipment for implementing various embodiments of the present invention, where the user equipment 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the user equipment configuration shown in fig. 7 does not constitute a limitation of the user equipment, which may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the user equipment includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted user equipment, a wearable device, a pedometer, and the like.

Wherein, the processor 610 is configured to determine a target TA; the radio frequency unit 601 is configured to send a first uplink signal through a first target channel by using a target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network equipment; the second TA is a TA in which the UE sends the second uplink signal through the second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.

The user device provides wireless broadband internet access to the user via the network module 602, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 may also provide audio output related to a specific function performed by the user equipment 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.

The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.

The user device 600 also includes at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or the backlight when the user equipment 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the user equipment posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the user device. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 610, and the processor 60 receives and executes commands sent by the processor 610. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 7, the touch panel 6071 and the display panel 6061 are two independent components to implement the input and output functions of the user equipment, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the user equipment, and is not limited herein.

The interface unit 608 is an interface for connecting an external device to the user equipment 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the user equipment 600 or may be used to transmit data between the user equipment 600 and the external device.

The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 610 is a control center of the user equipment, connects various parts of the entire user equipment using various interfaces and lines, and performs various functions of the user equipment and processes data by running or executing software programs and/or modules stored in the memory 609 and calling up data stored in the memory 609, thereby performing overall monitoring of the user equipment. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

The user equipment 600 may further include a power supply 611 (such as a battery) for supplying power to various components, and preferably, the power supply 611 may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the user equipment 600 includes some functional modules that are not shown, and are not described in detail herein.

Fig. 8 is a schematic hardware structure diagram of a network device for implementing an embodiment of the present invention, where the network device 800 includes: a processor 801, a transceiver 802, a memory 803, a user interface 804 and a bus interface.

Wherein, the processor 801 is configured to determine a target TA; a transceiver 802, configured to transmit a first uplink signal through a first target channel by using a target TA; the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network equipment; the second TA is a TA in which the UE sends the second uplink signal through the second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

In the network device provided by the embodiment of the present invention, the network device may send a downlink signal to the UE, the UE may determine the first timing advance TA and the first indication information by receiving the downlink signal, and the UE determines the target TA according to the first timing advance TA and the TA indicated by the first indication information. According to the scheme, the target TA is determined by the UE according to the weighted value of the first TA and the second TA sent by the network equipment, or the UE directly determines the first TA sent by the network equipment as the target TA, so that the UE can send the first uplink signal by adopting the target TA determined according to the first TA.

In the embodiment of the present invention, in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.

In addition, the network device 800 further includes some functional modules that are not shown, and are not described herein again.

Optionally, an embodiment of the present invention further provides a user equipment, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the signal transmission method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

Optionally, an embodiment of the present invention further provides a network device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the signal transmission method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the signal transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a user equipment (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A signal transmission method is applied to User Equipment (UE), and is characterized by comprising the following steps:

determining a target timing advance TA;

sending a first uplink signal through a first target channel by adopting the target TA;

the target TA is a weighted value of a first TA and a second TA or the first TA, and the first TA is a TA sent by the network device; the second TA is a TA in which the UE sends a second uplink signal through a second target channel, the second target channel is one of multiple channels, and the multiple channels are channels in which the UE sends the second uplink signal to the network device.

2. The method of claim 1, wherein prior to determining the target TA, the method further comprises:

receiving a downlink signal sent by the network device, where the downlink signal includes the first TA;

the determining the target TA includes:

and determining the target TA according to the first TA.

3. The method of claim 2, wherein before receiving the downlink signal transmitted by the network device, the method further comprises:

and respectively transmitting the second uplink signals to the network equipment through the plurality of channels.

4. The method of claim 2 or 3, wherein the second target channel is any one of: one of the plurality of channels, one of the plurality of channels indicated in the downlink signal by the network device, and one of at least two channels indicated in the downlink signal by the network device, where the at least two channels are channels of the plurality of channels.

5. The method of claim 1, wherein said transmitting a first uplink signal over a first target channel using the target TA comprises:

and sending the first uplink signal through the first target channel in the cell or the cell group corresponding to the target TA by adopting the target TA.

6. The method according to claim 2 or 3, wherein the second uplink signal is an access request message, and the downlink signal is an access confirmation message;

under the condition that the UE is in an idle state or a deactivated state in the process of accessing the network equipment this time, the first uplink signal is a feedback message of the UE to the access confirmation message or the access request message sent by the UE in the process of accessing the network equipment next time;

alternatively, the first and second electrodes may be,

when the UE is in a connected state during the current access to the network device and the UE accesses the network device in a contention mode, the first uplink signal is a feedback message of the UE to the access confirmation message or the access request message sent by the UE during the next access to the network device;

alternatively, the first and second electrodes may be,

if the process of accessing the network equipment by the UE is successfully completed; the first uplink signal is an uplink signal sent to the network device when the UE is in a connected state, and the first uplink signal is an uplink signal corresponding to a channel type indicated in the access acknowledgement message.

7. A signal transmission method applied to network equipment is characterized in that,

sending a downlink signal to User Equipment (UE), wherein the downlink signal comprises a first Timing Advance (TA) and first indication information, the first indication information is used for indicating that the UE takes a TA which sends a second uplink signal through a second target channel as a second TA, the first TA and the second TA are used for determining the target TA by the UE, the target TA is used for sending the first uplink signal through the first target channel by the UE, the second target channel is one of a plurality of channels, and the plurality of channels are channels through which the UE sends the second uplink signal to the network equipment.

8. The UE is characterized by comprising a determining module and a sending module;

the determining module is used for determining a target timing advance TA;

the sending module is configured to send a first uplink signal through a first target channel by using the target TA determined by the determining module;

9. The UE of claim 8, further comprising a receiving module;

the receiving module is configured to receive a downlink signal sent by the network device before the determining module determines the target TA, where the downlink signal includes the first TA;

the determining module is specifically configured to determine the target TA according to the first TA received by the receiving module.

10. The UE of claim 9, wherein the sending module is further configured to send the second uplink signals to the network device through the plurality of channels respectively before the receiving module receives the downlink signals sent by the network device.

11. The UE of claim 9 or 10, wherein the second target channel is any one of: one of the plurality of channels, one of the plurality of channels indicated in the downlink signal by the network device, and one of at least two channels indicated in the downlink signal by the network device, where the at least two channels are channels of the plurality of channels.

12. The UE of claim 8, wherein the sending module is specifically configured to send, by using the target TA, the first uplink signal through the first target channel in the cell or the cell group corresponding to the target TA determined by the determining module.

13. The UE according to claim 9 or 10, wherein the second uplink signal is an access request message, and the downlink signal is an access confirmation message;

when the UE is in an idle state or a deactivated state in the process of accessing the network device this time, the first uplink signal is a feedback message of the UE for the access confirmation message, or is the access request message sent by the UE in the process of accessing the network device next time;

alternatively, the first and second electrodes may be,

and when the process of accessing the network device by the UE is successfully completed, and the first uplink signals are all uplink signals sent to the network device when the UE is in a connected state, where the first uplink signals are uplink signals corresponding to the channel type indicated in the access confirmation message.

14. A network device, characterized in that the network device comprises a sending module;

the sending module is configured to send a downlink signal to a user equipment UE, where the downlink signal includes a first timing advance TA and first indication information, the first indication information is used to indicate that the UE uses a TA that sends a second uplink signal through a second target channel as a second TA, the first TA and the second TA are used for the UE to determine the target TA, the target TA is used for the UE to send a first uplink signal through a first target channel, the second target channel is one of multiple channels, and the multiple channels are channels through which the UE sends the second uplink signal to the network device.

15. A user equipment, UE, characterized in that the UE comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the signal transmission method according to any of claims 1-6.

16. A network device, characterized in that the network device comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the signal transmission method according to claim 7.

17. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the signal transmission method as set forth in any one of claims 1 to 6 or claim 7.