WO2017174020A1 - Method, device, and system for transmission of uplink control information - Google Patents

Abstract

The present invention relates to the field of communication. Disclosed are a method, a device, and a system for transmission of uplink control information. The method comprising: transmitting, by a user equipment (UE), an uplink reference signal to a network side equipment, wherein the uplink reference signal transmitted by the UE occupies at least one symbol in time domain; the uplink reference signal transmitted by the UE occupies at least one resource block in frequency domain, and subcarriers in the at least one resource block are contiguous. According to the present application, through providing the upper reference signal which occupies at least one symbol in time domain, the uplink reference signal can be time division multiplexed on the at least one symbol; therefore a great number of UEs can be supported to transmit the uplink reference signal, and the method is applicable to ECO-state UEs. Furthermore, the uplink reference signal occupies at least one resource block in frequency domain; therefore, resources are saved due to low resource occupation.

Description

Method, device and system for transmitting uplink reference signal

The present application claims priority to Chinese Patent Application No. 201610218437.1, entitled "Transmission Method, Apparatus and System for Uplink Reference Signals", filed on April 8, 2016, the entire contents of which are incorporated by reference. In this application.

Technical field

The embodiments of the present invention relate to the field of wireless communications, and in particular, to a method, device, and system for transmitting an uplink reference signal.

Background technique

In a wireless communication system, when a user equipment (UE) interacts with a network side device, the network side device needs to acquire the location of the UE, and can determine the distance between the UE and the network side device and the transmission delay time, and then determine The Timing Advance (TA) of the UE, thereby implementing uplink synchronization of each UE. In this process, the UE may perform the foregoing function by sending an uplink signal, that is, the UE may send an uplink reference signal to the network side device, so that the network side device acquires the location of the UE according to the received uplink reference signal and The TA of the UE is estimated.

In practical applications, the UE usually needs to send an uplink reference signal according to the state of the UE. For example, in a Long Term Evolution (LTE) system, the UE generally sends a Souding Reference Signal (SRS) to the network side device when the connected state is in a connected state, and the SRS is an uplink reference signal. The network side device can not only perform channel estimation according to the SRS, but also acquire the UE location and the estimated TA. Alternatively, the UE may send a random access request to the network side device when in the connected state or the idle state, so that the network side device estimates the TA according to the random access request. In the fifth generation mobile communication technology (5G) system, the state of the UE can be divided into an active state and an Eco-Conservation-Optimization (ECO) state. The UE entering the network side device can switch between these two states. The Active state is basically the same as the connected state in the LTE system. The UE in this state and the network-side device always maintain a Radio Resource Control (RRC) connection, which can support data transmission at any time, and the ECO state UE also The network side device always maintains the RRC connection, but only supports a small amount of data transmission. Therefore, the network side device does not need to frequently monitor and manage the channel between the UE and the network side device, and does not need to perform channel estimation. Therefore, when the uplink reference signal is transmitted in the 5G system, the UE in the active state can directly transmit the SRS to the network side device by referring to the UE in the connected state.

However, for a UE in the ECO state, since there are a large number of UEs in the ECO state in the 5G system, in the current technology, the SRS is only allowed to transmit on the last symbol of the subframe in which the uplink reference signal is transmitted, thereby making it difficult to support a large number of The UE sends an uplink reference signal. In addition, since the network side device does not need to perform channel estimation according to the uplink reference signal sent by the UE in the ECO state, the uplink reference signal sent by the UE in the ECO state cannot directly multiplex the SRS in the connected state, and an apparatus suitable for the ECO state is needed. The uplink reference signal transmission method.

Summary of the invention

In order to solve the problem of the prior art, an embodiment of the present invention provides a method, device, and system for transmitting an uplink reference signal. The technical solution is as follows:

In a first aspect, a method for transmitting an uplink reference signal is provided, where the method includes:

The user equipment UE sends an uplink reference signal to the network side device.

The uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol in the subframe where the at least one symbol is located is used to send an uplink reference signal; the uplink reference signal sent by the UE is in the frequency domain. At least one resource block is occupied, and the subcarriers in the at least one resource block are consecutive.

In the embodiment of the present invention, an uplink reference signal that occupies at least one symbol in the time domain is provided, so that the uplink reference signal can be time-division multiplexed on at least one symbol, so that a large number of UEs can be supported to transmit the uplink reference signal. The UE is adapted to the ECO state, and the uplink reference signal occupies at least one resource block in the frequency domain, occupies less resources and saves resources.

In conjunction with the first aspect, in a first possible implementation manner of the first aspect, an uplink symbol in a subframe or a time slot in which the at least one symbol is located is used to send an uplink reference signal.

In the embodiment of the present invention, the uplink symbol in the subframe or the time slot in which the at least one symbol is located is used to send the uplink reference signal, and the uplink reference signal can be guaranteed to be time-divided on all symbols in one subframe or one slot. Used to support a large number of users.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the uplink reference signal that is sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request, where the state transition request indicates The UE requests the network side device to switch the UE from the first state to the second state, where the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, N is a positive integer.

In the embodiment of the present invention, the N symbols in the subframe where the at least one symbol is located are configured as the first designated symbol, so that the UE can initiate a state to the network side device by sending an uplink reference signal on the first designated symbol. If the network side device detects the uplink reference signal sent by the UE on the first designated symbol, the network side device can switch the current state from the first state to the second state, thereby implementing state transition of the UE. .

In conjunction with any of the foregoing possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the symbol index of the first designated symbol is configured by the network side device.

In the embodiment of the present invention, the symbol index of the first designated symbol is configured by the network side device to the UE, so that the UE can determine the location of the first designated symbol according to the symbol index, thereby improving configuration flexibility.

With reference to any one of the foregoing possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the symbol index of the first designated symbol is sent by the network side device by using a system broadcast message or a high layer signaling Configuration.

With reference to any one of the foregoing possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the uplink reference signal on the first designated symbol is sent by using a preset contention mechanism.

In the embodiment of the present invention, the UE may send the uplink reference signal by using the preset contention mechanism on the first designated symbol, so that multiple UEs may send the uplink reference signal by using the contention on the uplink shared resource corresponding to the first designated symbol. The network side device is not required to configure and schedule the uplink reference signal sent on the first designated symbol.

In conjunction with any of the foregoing possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

In the embodiment of the present invention, if the first state of the UE is currently in the ECO state, the state transition request may indicate the The UE requests the network side device to switch the UE from the ECO state to the active state.

With reference to any of the foregoing possible implementation manners of the foregoing aspect, in a seventh possible implementation manner of the foregoing aspect, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

In the embodiment of the present invention, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located, which avoids conflicts with the sounding reference signal SRS sent by other active UEs, and enhances compatibility.

In conjunction with any of the foregoing possible implementations of the first aspect, in an eighth possible implementation manner of the first aspect, the method further includes:

Receiving, by the UE, the uplink reference signal configuration information sent by the network side device, and sending the uplink reference signal according to the uplink reference signal configuration information;

The uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the period information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

In the embodiment of the present invention, the UE determines the time domain location, the frequency domain location, and the code domain location of the uplink reference signal to be sent according to the uplink reference signal configuration information by receiving the uplink reference signal configuration information sent by the network side device, and The uplink reference signal is sent on the determined time domain location, the frequency domain location, and the code domain location, so that multiple UEs can send uplink reference signals to the network side device respectively according to the configuration of the network side device, that is, the network side device can be Under the scheduling, resources are shared by means of time division multiplexing, frequency division multiplexing, code division multiplexing, and the like.

In a second aspect, a method for transmitting an uplink reference signal is provided, where the method includes:

Receiving, by the network side device, an uplink reference signal sent by the user equipment UE;

The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive of.

With reference to the second aspect, in a first possible implementation manner of the second aspect, an uplink symbol in a subframe or a time slot in which the at least one symbol is located is used to send an uplink reference signal.

With reference to any of the foregoing possible implementation manners of the second aspect, in a second possible implementation manner of the second aspect, the method further includes:

The network side device detects an uplink reference signal sent by the UE on the first designated symbol, and determines, according to the detection result, whether to switch the UE from the first state to the second state, where the UE is The uplink reference signal sent on the first designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to switch the UE from the first state Up to the second state, the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.

With reference to any of the foregoing possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, the method further includes:

The network side device configures a symbol index of the first designated symbol to the UE.

With reference to any of the foregoing possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, The method also includes:

And the network side device configures, by using a system broadcast message or a high layer signaling, a symbol index of the first designated symbol to the UE.

With reference to any one of the foregoing possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

With reference to any of the foregoing possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

With reference to any of the foregoing possible implementations of the second aspect, in a seventh possible implementation manner of the first aspect, the method further includes:

And transmitting uplink reference signal configuration information to the UE, where the uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the period information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

A third aspect provides a user equipment UE, where the UE includes:

a sending module, configured to send an uplink reference signal to the network side device;

The uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol in the subframe where the at least one symbol is located is used to send an uplink reference signal; the uplink reference signal sent by the UE is in the frequency domain. At least one resource block is occupied, and the subcarriers in the at least one resource block are consecutive.

In conjunction with the third aspect, in a first possible implementation manner of the third aspect, an uplink symbol in a subframe or a time slot in which the at least one symbol is located is used to send an uplink reference signal.

With reference to any one of the foregoing possible implementation manners of the third aspect, in a second possible implementation manner of the third aspect, the uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request The state transition request indicates that the UE requests the network side device to switch the UE from the first state to the second state, where the first designated symbol is a subframe or a time slot in which the at least one symbol is located. N symbols inside, N is a positive integer.

With reference to any of the foregoing possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the symbol index of the first designated symbol is configured by the network side device.

With reference to any of the foregoing possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the uplink reference signal on the first designated symbol is sent by using a preset contention mechanism.

With reference to any one of the foregoing possible implementation manners of the third aspect, in a fifth possible implementation manner of the third aspect, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

With reference to any one of the foregoing possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

With reference to any of the foregoing possible implementation manners of the third aspect, in a seventh possible implementation manner of the third aspect, the UE further includes:

a receiving module, configured to receive uplink reference signal configuration information sent by the network side device;

The sending module is further configured to send the uplink reference signal according to the uplink reference signal configuration information;

The uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the period information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

In a fourth aspect, a network side device is provided, where the network side device includes:

a receiving module, configured to receive an uplink reference signal sent by the user equipment UE;

The uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol in the subframe where the at least one symbol is located is used to send an uplink reference signal; the uplink reference signal sent by the UE is in the frequency domain. At least one resource block is occupied, and the subcarriers in the at least one resource block are consecutive.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, an uplink symbol in a subframe or a time slot in which the at least one symbol is located is used to send an uplink reference signal.

With reference to the first possible implementation of the fourth aspect, in a second possible implementation manner of the fourth aspect, the network side device further includes:

And a switching module, configured to detect, on the first designated symbol, an uplink reference signal sent by the UE, and determine, according to the detection result, whether to switch the UE from the first state to the second state, where the The uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to use the UE from the first state. Switching to the second state, the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.

With reference to the first possible implementation of the fourth aspect, in a third possible implementation manner of the fourth aspect, the network side device further includes:

And a configuration module, configured to configure, to the UE, a symbol index of the first designated symbol.

In conjunction with the first possible implementation of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

In conjunction with the first possible implementation of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

With reference to the first possible implementation manner of the foregoing aspect, in a sixth possible implementation manner of the foregoing aspect, the network side device further includes: a sending module, configured to send uplink reference signal configuration information to the UE; The uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the period information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

The fifth aspect provides a transmission system for an uplink reference signal, where the system includes any one of the user equipment UE according to any one of the foregoing aspects, and the network side device of any one of the foregoing fourth aspects.

The technical solution provided by the embodiment of the present invention has the beneficial effects that the uplink reference signal sent by the UE to the network side device can occupy at least one symbol in the time domain to ensure that the uplink reference signal can be in the method provided by the embodiment of the present invention. Performing time division multiplexing on at least one symbol, and the uplink reference signal sent by the UE occupies consecutive subcarriers in the frequency domain and can configure bandwidth, thereby ensuring that the uplink reference signal can be frequency division multiplexed over the entire system bandwidth, thereby supporting A large number of UEs are used to transmit the uplink reference signal, and are adapted to the ECO state UE. Moreover, the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, occupies less resources and saves resources.

DRAWINGS

1 is a schematic structural diagram of a transmission system of an uplink reference signal according to an embodiment of the present invention;

2 is a schematic structural diagram of a 5G system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of UE state transition according to an embodiment of the present invention; FIG.

4 is a flowchart of a method for transmitting an uplink reference signal according to an embodiment of the present invention;

FIG. 5 is a flowchart of another method for transmitting an uplink reference signal according to an embodiment of the present invention;

FIG. 6 is a flowchart of still another method for transmitting an uplink reference signal according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a subframe in which an uplink reference signal is located according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a time slot in which an uplink reference signal is located according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a resource block in which an uplink reference signal is located according to an embodiment of the present disclosure;

10 is a schematic structural diagram of another time slot in which an uplink reference signal is provided according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a user equipment UE according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a user equipment UE according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a network side device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

FIG. 1 is a schematic structural diagram of a transmission system of an uplink reference signal according to an embodiment of the present invention. Referring to FIG. 1, the uplink reference signal transmission system 100 includes a user equipment UE101 and a network side equipment 102.

The UE 101 is configured to send an uplink reference signal to the network side device 102.

The network side device 102 is configured to receive an uplink reference signal sent by the UE 101.

The uplink reference signal sent by the UE 101 occupies at least one symbol in the time domain, and the uplink reference signal sent by the UE 101 occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive.

Optionally, the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send the uplink reference signal.

Optionally, the network side device 102 may send uplink reference signal configuration information to the UE 101. The UE 101 may send an uplink reference signal to the network side device 102 based on the uplink reference signal configuration information configured by the network side device 102.

The transmission system of the uplink reference signal may be an LTE system or a 5G system, and may be other wireless communication systems, which is not limited in this embodiment of the present invention. The network side device may be an evolved Node B (eNB) or a centralized controller, and may also be other network side devices, which is not limited in this embodiment of the present invention. For example, in the LTE system, the network side device may be an eNB, and in the 5G system, the network side device may be a centralized controller.

Taking the transmission system of the uplink reference signal as an example of a 5G system, the 5G system may be a "UE-centric" (UE-centric) wireless network system, and Nonn may be introduced in the "UE-centric" wireless network system. A -cell (no cell) network architecture that constitutes a "UE-centric Non-cell" network system.

That is, referring to FIG. 2, the 5G system can deploy a large number of small stations 2011 in a specific area to form a hyper cell 201, and each small station is a transmission in the super cell 201. Transmission Point (TP), and each station 2011 is connected to the centralized controller 202. The central controller (controller) 202 can allocate a unique identifier, such as a UE ID (Identification), to the UE 203 in the super cell 201, so that when the UE 203 moves in the super cell 201, The centralized controller 202 can identify the UE 203.

Further, in the "UE-centric Non-cell" network system, in order to ensure that the UE is always-online and can perform data transmission at any time, the UE in the system can be divided into two states: an Active state. And ECO state. The active state UE can perform data transmission at any time, and the ECO state UE only supports a small amount of data transmission. When the UE accesses the super cell, it will switch between the two states. For example, referring to FIG. 3, when the UE is in Ative, if there is no data to be transmitted within the preset duration after the UE data transmission is completed, the UE will switch from the Active state to the ECO state; When the byte packet needs to be transmitted, the UE will switch back from the ECO state to the Ative state. The preset byte may be 20 bytes, 25 bytes, 30 bytes, etc., which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, in order to ensure that the centralized controller 202 can identify the location of the UE 203 in real time, the centralized controller 202 can send the uplink reference signal configuration information to the UE 203, so that the UE 203 concentrates on the uplink reference signal configuration information configured by the centralized controller 202. The controller 202 transmits an uplink reference signal. The uplink reference signal sent by the UE 203 occupies at least one symbol in the time domain, and the uplink reference signal sent by the UE 203 occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive.

The centralized controller 202 receives the uplink reference signal sent by the UE 203, and acquires information such as the location, TA, and the like of the UE 203 according to the uplink reference signal. On the one hand, the centralized controller 202 can select the optimal TP set 204 for the UE 203 to serve the UE 203 according to the acquired location information, and update the TP-UE relationship table; on the other hand, the centralized controller 202 can also The obtained TA information is adjusted to adjust the TA of the UE 203.

For example, when the UE 203 moves within the super cell 201, the centralized controller 202 may acquire the location of the UE 203 according to the uplink reference signal sent by the UE 203, and select a new TP set 204 for the UE 203 according to the location of the UE 203. Service, thereby avoiding true cell handover and achieving continuity of UE services.

Further, the UE 203 may also send the SRS to the centralized controller 202 when in the acticve state, and send the uplink reference signal shown in the embodiment of the present invention to the centralized controller 202 when in the ECO state. Correspondingly, the centralized controller 202 can obtain not only the location of the UE 203, the TA, etc., but also the SRS sent by the UE 203 in the Acticve state. Channel estimation, and the uplink reference signal transmitted by the UE 203 according to the ECO state does not need to perform channel estimation.

FIG. 4 is a flowchart of a method for transmitting an uplink reference signal according to an embodiment of the present invention. The method is performed by a user equipment UE. Referring to FIG. 4, the method includes the following steps:

Step 401: The user equipment UE sends an uplink reference signal to the network side device.

The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive.

According to the method provided by the embodiment of the present invention, the UE may send an uplink reference signal to the network side device, where the uplink reference signal sent by the UE may occupy at least one symbol in the time domain, and ensure that the uplink reference signal can be performed on at least one symbol. Time division multiplexing, and the uplink reference signal sent by the UE occupies consecutive subcarriers in the frequency domain and can configure bandwidth, thereby ensuring that the uplink reference signal can be frequency division multiplexed over the entire system bandwidth, thereby supporting a large number of UEs to send uplink reference. The signal is adapted to the ECO state UE, and the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, occupies less resources and saves resources.

Optionally, the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send the uplink reference signal.

Optionally, the uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request, where the state transition request indicates that the UE requests the network side device to take the UE from the current first state. Switching to the second state, the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.

Optionally, the symbol index of the first designated symbol is configured by the network side device.

Specifically, the symbol index of the first designated symbol is configured by the network side device by using a system broadcast message or a high layer signaling, where the system broadcast message may be a System Information Block (SIB) message or a master information block (Master Information Block). , MIB) message, etc., the higher layer signaling may be RRC signaling.

Optionally, the uplink reference signal on the first designated symbol is sent by using a preset contention mechanism.

Optionally, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

Optionally, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

Optionally, the method further includes:

The UE receives the uplink reference signal configuration information sent by the network side device, and sends the uplink reference signal according to the uplink reference signal configuration information;

The uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the periodic information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE transmits the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

All the foregoing optional technical solutions may be used in any combination to form an optional embodiment of the present application, and details are not described herein again.

FIG. 5 is a flowchart of a method for transmitting an uplink reference signal according to an embodiment of the present invention. The execution body of the method is a network side device. Referring to FIG. 5, the method includes the following steps:

Step 501: The network side device receives an uplink reference signal sent by the user equipment UE.

The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive.

With the method provided by the embodiment of the present invention, the network side device may receive the uplink reference signal sent by the user equipment UE, where the uplink reference signal sent by the UE may occupy at least one symbol in the time domain, and ensure that the uplink reference signal may be at least one. The symbol is time-division multiplexed, and the uplink reference signal sent by the UE occupies consecutive sub-carriers in the frequency domain and can configure the bandwidth, thereby ensuring that the uplink reference signal can be frequency-multiplexed and multiplexed over the entire system bandwidth, thereby supporting a large number of UEs. The uplink reference signal is sent to the ECO state UE, and the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, occupies less resources and saves resources.

Optionally, the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send the uplink reference signal.

Optionally, the method further includes:

The network side device detects an uplink reference signal sent by the UE on the first designated symbol, and determines, according to the detection result, whether to switch the UE from the first state to the second state, where the UE is in the first state. The uplink reference signal sent on the designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to switch the UE from the first state to the second state, the first designated symbol N is a positive integer for the N symbols in the subframe or slot in which the at least one symbol is located.

Optionally, the method further includes:

The network side device configures a symbol index of the first designated symbol to the UE.

Specifically, the network side device may configure a symbol index of the first designated symbol to the UE by using a system broadcast message or a high layer signaling, where the system broadcast message may be an SIB message, an MIB message, or the like, and the high layer signaling may be RRC signaling.

Optionally, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

Optionally, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

Optionally, the method further includes:

And transmitting, to the UE, uplink reference signal configuration information, where the uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the periodic information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE transmits the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

All the foregoing optional technical solutions may be used in any combination to form an optional embodiment of the present application, and details are not described herein again.

FIG. 6 is a flowchart of a method for transmitting an uplink reference signal according to an embodiment of the present invention. The method is performed by a UE and a network side device. Referring to FIG. 6, the method includes the following steps:

Step 601: The network side device sends uplink reference signal configuration information to the UE.

An embodiment of the present invention provides an uplink reference signal, where the uplink reference signal occupies at least one symbol in a time domain, The uplink reference signal occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are contiguous.

Optionally, the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send the uplink reference signal.

That is, the uplink reference signal sent by the UE may be sent in a subframe, and the uplink symbol of the subframe in which the uplink reference signal is located may be used to send an uplink reference signal, where the subframe may be defined in the LTE system. The sub-frames that are defined in the future 5G system are not limited in this embodiment of the present invention. Alternatively, the uplink reference signal sent by the UE may be sent in units of time slots, and the uplink symbols of the time slot in which the uplink reference signal is located may be used to send an uplink reference signal, where the time slot may be a sub-defined in the LTE system. The frame may also be a time slot defined in a future 5G system, which is not limited in this embodiment of the present invention.

The uplink symbol is a symbol for transmitting uplink information. For convenience of description, all the symbols in the subframe or time slot in which the uplink reference signal is located are all uplink symbols as an example.

In order to ensure that the UE can send the uplink reference signal on the specified time domain resource and the frequency domain resource, the network side device may send the uplink reference signal configuration information to the UE, to indicate that the UE sends the uplink reference signal configuration information to the network side. The device sends an uplink reference signal.

The uplink reference signal may be a tracking signal, which is not limited in this embodiment of the present invention. The uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the periodic information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α; the UE transmits the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain. .

The uplink reference signal configuration information may be a value of a specific parameter, or may be an indication information, which is not limited in this embodiment of the present invention. For example, in the process of the network side device transmitting the foregoing uplink reference information configuration information to the UE, the value of the corresponding parameter may be directly sent to the UE, for example, directly sending the corresponding

The value of the parameter may also be sent to the UE to indicate that the UE obtains the value of the corresponding parameter according to the indication information.

Specifically, the uplink reference signal configuration information may be divided into cell-specific configuration information and UE-specific configuration information, where the cell-specific configuration information is used to indicate that the uplink reference signal is allowed to be sent in the cell. The UE-specific configuration information is used to indicate a resource that the designated UE sends the uplink reference signal.

In a practical application, the network side device may send the cell-specific configuration information to the UE by using the system broadcast message, for example, the cell-specific configuration information may be sent to the UE by using the SIB message or the MIB message; The UE sends the UE-specific configuration information, for example, the UE-specific configuration information can be sent to the UE through RRC signaling, which is not limited in this embodiment of the present invention.

1) The cell-specific configuration information may include the period information of the uplink reference signal sent by the cell where the UE is located.

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

according to

with

The set of subframes for transmitting the uplink reference signal in the cell where the UE is located may be determined.

For example, if the subframe number

Meet the following formula:

or

among them,

For the subframe number,

The offset of the subframe used for transmitting the uplink reference signal in the cell where the UE is located, with respect to the specified subframe,

The period in which the uplink reference signal is sent for the cell where the UE is located. Then the subframe number

The corresponding subframe is a subframe for transmitting an uplink reference signal in the cell.

In addition, in the process that the network side device sends the cell-specific configuration information to the UE in the cell, the network side device may send the UE to the UE simultaneously.

with

For example, the network side device can send to the UE

with

Joint index of Index to indicate this at the same time

with

The UE can be determined according to the joint index

with

The subframe for transmitting the uplink reference signal in the cell where the UE is located is further determined.

2) UE-specific configuration information may include period information of the uplink reference signal sent by the UE

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends the sequence index information (u, v) of the uplink reference signal and the cyclic shift information α, and the frequency domain start position information f ₀ and the occupied bandwidth information W of the UE transmitting the uplink reference signal in the frequency domain.

Optionally, the UE-specific configuration information may also include period information of the uplink reference signal sent by the cell where the UE is located.

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

This embodiment of the present invention does not limit this.

For example, in a possible implementation manner, the network side device may send the message to the UE.

Setting a parameter to indicate a period in which the cell where the UE is located sends an uplink reference signal, for example, if

If the configuration parameter is 00, the period in which the cell in which the UE is located sends the uplink reference signal is 5 subframe lengths.

If the configuration parameter is 01, the period in which the cell in which the UE is located sends the uplink reference signal is 10 subframe lengths. In addition, the network side device can also send to the UE.

The configuration parameter is used to indicate the offset of the subframe in which the uplink reference signal is sent with respect to the specified subframe, for example, the subframe of the specified subframe is 0, if

If the configuration parameter is 00, the offset of the subframe that sends the uplink reference signal relative to the subframe 0 is 0.

If the configuration parameter is 01, the offset of the subframe in which the uplink reference signal is transmitted with respect to the subframe 0 is 1 or the like. Among them, the

Configuration parameters and the

The size of the configuration parameter may be 2 bits, which is not limited in this embodiment of the present invention.

Through the above

with

The configuration may be such that a set of subframes is obtained, and all the UEs in the cell may send an uplink reference signal in the subframe corresponding to the subframe set. For convenience of description, in the embodiment of the present invention, the subframe set corresponds to A subframe is referred to as an uplink reference signal subframe. For a UE in the cell, the network side device also needs to allocate a subframe for sending the uplink reference signal to the UE, that is, select a partial subframe from the subframe set as a sub-frame for transmitting the uplink reference signal by the UE. frame.

Optionally, the subframe in which the UE sends the uplink reference signal may be according to the period in which the UE sends the uplink reference signal.

And determining, by the UE, a subframe start position for transmitting the uplink reference signal. The UE may determine, according to the starting position of the subframe, from which subframe the uplink reference signal is sent, according to the

It can be determined how many subframes are selected to send an uplink reference signal.

The period in which the UE sends the uplink reference signal

An integer multiple of the period for transmitting the uplink reference signal for the cell where the UE is located, that is,

Where t is a positive integer. Then, the UE sends an uplink reference signal period.

It can be configured in two ways:

In the first implementation manner, the network side device may send the UE to the UE.

Setting a parameter to indicate a period in which the UE sends an uplink reference signal, where

The configuration parameters can be 2bit-3bit. For example, when

The network side device may send to the UE when the length is 5 subframes.

Configuration parameters, configuration

It is 10 subframe lengths.

In a second implementation manner, the network side device may send a t configuration parameter to the UE to indicate

for

t times. For example, if the t configuration parameter is 00, it means

for

The UE may send an uplink reference signal on each uplink reference signal subframe; if the t configuration parameter is 01, it indicates

equal

The UE may select an uplink reference signal subframe for every other uplink reference signal subframe to transmit an uplink reference signal.

In this embodiment of the present invention, the UE may determine the start position of the subframe in which the UE sends the uplink reference signal in the following two manners:

In the first implementation manner, after receiving the UE-specific configuration information on the subframe n, the UE may determine the subsequent first uplink reference signal subframe as the subframe start position of the UE sending the uplink reference signal. Or, the first uplink reference signal subframe after the subframe is separated from the subframe n is determined as the subframe start position of the uplink signal transmitted by the UE, where k is a positive integer. The determining rule of the starting position of the subframe may be predefined by a network protocol, which is not limited by the embodiment of the present invention.

In a second implementation manner, the UE-specific configuration information may include a subframe start position at which the UE sends an uplink reference signal. For example, the network side device may send a subframe start location configuration parameter to the UE, and if the subframe start location configuration parameter is 00, it indicates that the UE may receive the first uplink after the UE-specific configuration information. The reference signal subframe is determined as a subframe start position of the uplink reference signal sent by the UE; if the subframe start location configuration parameter is 01, the UE may receive the second uplink after the UE-specific configuration information is received. The reference signal subframe determines a subframe start position at which the UE transmits an uplink reference signal.

Further, for the subframe in which the uplink reference signal sent by the UE is located, the network side device may further configure the symbol in the subframe, that is, the network side device may configure the UE to send the uplink reference signal. symbol. For example, the network side device may configure the UE to send an uplink reference signal on all symbols in the subframe, or configure the UE to send an uplink reference signal on a part of the symbols in the subframe. Make a limit.

The symbol of the uplink reference signal sent by the UE may be the offset of the symbol of the uplink reference signal sent by the UE with respect to the second specified symbol.

It is determined that the second designated symbol may be the No. 0 symbol, the No. 1 symbol, and the like in the subframe in which the uplink reference signal is sent by the UE, which is not limited in this embodiment of the present invention. For example, when the second designated symbol is the 0th symbol, the UE transmits the offset of the symbol of the uplink reference signal with respect to the second specified symbol.

If it is 3, it can be determined that the first UE can send the uplink reference signal on the symbol No. 3 of the uplink reference signal subframe.

It should be noted that, in the embodiment of the present invention, only the network side device sends the uplink reference signal configuration information to a designated UE, and in actual application, the network side device may send an uplink reference signal to all UEs in the cell. The configuration information is such that each UE can send an uplink reference signal according to the uplink reference signal configuration information sent by the network side device. Moreover, the configuration information of the uplink reference signals sent by the network side device to different UEs may be the same or different, which is not limited in this embodiment of the present invention.

For example, since all the symbols in the uplink reference signal subframe in the embodiment of the present invention can be used to send the uplink reference signal, the network side device can separately send different uplink reference signal configuration information to the UE1 and the UE2 to indicate the UE1 and the UE2 transmit uplink reference signals on different symbols within the same subframe. For example, the network side device may configure the UE1 to send an uplink reference signal on the No. 0 symbol in the subframe, and configure the UE2 to send an uplink reference signal on the No. 1 symbol in the subframe. In this way, the network side device can configure different UEs to respectively send uplink reference signals on different symbols in the same subframe, and implement time division multiplexing on each symbol in the uplink reference signal subframe, thereby supporting a large number of UEs. Send an upstream reference signal.

Further, the network side device may further send a sequence index (u, v) of the uplink reference signal and a cyclic shift α to the UE, and the UE may generate the sequence index (u, v) and the cyclic shift α. Uplink reference signal sequence. For the configuration and the generation process of the uplink reference sequence, reference may be made to the configuration and the generation process of the uplink demodulation reference signal sequence in the LTE system, which is not repeatedly described in this embodiment of the present invention. For example, the uplink reference signal sequence configuration and generation process can refer to standard 3GPP. This is not limited by the embodiment of the present invention, which is described in Section 5.5.3 of TS 36.211 V13.0.0 (2015-12). In addition, the process of the network side device configuring the uplink reference signal configuration information to the UE may also refer to the standard 3GPP TS 36.213 V13.0.0 (2015-12) section 8.2, which is not limited in this embodiment of the present invention.

Further, the network side device may further send, to the UE, a frequency domain starting position f ₀ and an occupied bandwidth of the uplink reference signal in the frequency domain, and the UE may be based on the frequency domain starting position f ₀ and occupied. The bandwidth determines the frequency domain location of the transmitted uplink reference signal.

Optionally, the network side device may configure that the uplink reference signal sent by the UE occupies 1 resource block-3 resource blocks in the frequency domain, and occupies consecutive subcarriers on each occupied resource block. For example, the uplink reference signal sent by the UE may occupy one resource block, two resource blocks, or three resource blocks in the frequency domain, which is not limited in this embodiment of the present invention.

It should be noted that the embodiment of the present invention is only an example in which the UE sends an uplink reference signal according to the uplink reference signal configuration information sent by the network side device, and in actual application, the UE may not need to receive the uplink reference sent by the network side device. The signal configuration information can directly send the uplink reference signal to the network side device. For example, the UE can directly send the uplink reference signal to the network side device according to a predefined standard, which is not limited in this embodiment of the present invention.

Step 602: The UE sends an uplink reference signal to the network side device according to the uplink reference signal configuration information configured by the network side device.

In the embodiment of the present invention, the UE may receive the uplink reference signal configuration information sent by the network side device, and store the uplink reference signal configuration information, and then, according to the uplink reference signal configuration information configured by the network side device, The network side device sends an uplink reference signal.

Optionally, the UE may send the uplink reference signal to the network side device when in the ECO state, and send the SRS to the network side device when in the Active state.

When the UE is in the ECO state, the UE maintains an RRC connection with the network side device, and the network side device allocates a unique UE ID to the UE, but the UE only supports a small amount of data transmission, that is, the UE will only Supports the transmission of packets smaller than the preset byte. The preset byte may be 20 bytes, 25 bytes, 30 bytes, etc., which is not limited in this embodiment of the present invention. For example, the ECO state UE can only support transmitting data packets smaller than 20 bytes, and when there are data packets larger than 20 bytes that need to be transmitted, the UE will switch from the ECO state to the Active state, and then transmit the data packet.

In addition, the UE in the ECO state can also include the following features:

The UE in the ECO state can support the uplink grant-free (UL grant-free) transmission, that is, the UE can transmit data on the uplink shared channel resource based on the contention mechanism, without the network side device allocate the uplink shared channel resource for the UE. The UE in the ECO state does not need to detect the control channel; the network side device does not need to perform channel estimation according to the uplink signal sent by the UE; the UE in the ECO state only supports a small number of connection management, that is, the UE in the ECO state only supports a small amount of data transmission. The UE does not need to frequently monitor and manage the channel between the UE and the network side device to ensure normal data transmission of the UE. Therefore, the UE in the ECO state can maintain less communication with the network side device. The signaling interaction is such that the UE in the ECO state consumes less power than the UE in the active state. In addition, the UE in the ECO state can also periodically send an uplink reference signal to the network side device, so that the network side device can track the UE.

Optionally, in order to facilitate the state transition of the UE, the uplink reference signal sent by the UE on the first designated symbol may be used to indicate that the UE initiates a state transition request, where the state transition request indicates that the UE requests the network side device to The UE switches from the first state in which it is currently located to the second state, where the first designated symbol is N symbols in a subframe in which the at least one symbol is located, and N is a positive integer. The N symbols may be consecutive N characters in the subframe where the at least one symbol is located. The number is not limited to the N symbols in the embodiment of the present invention.

It should be noted that the embodiment of the present invention only pays attention to the function of the state transition request, that is, the state transition request indicates that the network side device is requested to switch the UE from the current first state to the first state. The second state is not limited to the specific states of the first state and the second state. For example, in an actual application, the first state may be an ECO state, and the second state may be an Active state; or the first state is an Active state, and the second state is an ECO state; or the first state is connected The second state is an Idle state; or the first state is an Idle state, and the second state is a connected state or the like.

The first state is the ECO state, and the second state is the Active state. When the UE is in the ECO state, if a packet larger than the preset byte needs to be transmitted, the UE can be sent. An uplink reference signal is also sent on the first designated symbol of the subframe where the uplink reference signal is located, to request the network side device to switch the UE from the ECO state to the active state. In addition, when the UE does not need to perform state transition, the uplink reference signal sent by the UE will not occupy the first designated symbol of the subframe in which it is located.

The symbol index of the first designated symbol may be configured by the network side device to indicate which symbol in the subframe in which the at least one symbol is located. Correspondingly, before the UE sends the uplink reference signal on the first designated symbol, the network side device may configure the symbol index of the first designated symbol to the UE, and the UE may use the symbol of the first designated symbol. The symbol corresponding to the index is determined as the first designated symbol.

The network side device may configure, by using the high layer signaling, the symbol index of the first designated symbol to the UE, for example, the network side device may configure the symbol index of the first designated symbol to the UE by using RRC signaling; or The network side device may also configure a symbol index of the first designated symbol to the UE by using a system broadcast message. For example, the network side device may configure a symbol index of the first designated symbol to the UE by using an SIB message or an MIB message. The manner of configuring the symbol index of the first designated symbol is not limited in the embodiment of the invention.

Optionally, the uplink reference signal on the first designated symbol may be sent by using a preset contention mechanism, that is, when the UE needs to perform state transition, the UE may be on the first designated symbol by using a preset contention mechanism. The uplink reference signal is sent. Therefore, the UE can transmit the uplink reference signal on the first designated symbol without scheduling by the network side device. The preset contention mechanism may be configured in advance by the network side device. In this manner, when different UEs send an uplink reference signal on the same first designated symbol of the same uplink reference signal subframe to indicate that the state transition request is initiated, different UEs may send the uplink reference signal on the first designated symbol based on contention.

It should be noted that, in the embodiment of the present invention, only the uplink reference signal sent by the UE on the first designated symbol indicates that the state switching request is initiated to the network side device, and in actual application, the UE may also be in the application. Sending a signal other than the uplink reference signal on the first designated symbol, for example, transmitting a spreading sequence similar to an uplink scheduling request (SR) on the first designated symbol to indicate that the state switching is sent to the network side device. The request is not limited in this embodiment of the present invention.

Optionally, since the SRS in the current technology only allows transmission on the last symbol of the subframe in which the subframe is located, in order to avoid the uplink reference signal sent by the UE in the last symbol of a certain subframe and other Active UEs in the subframe. The SRS sent on the last symbol causes a collision, and the uplink reference signal sent by the UE may not occupy the last symbol of the subframe in which the at least one symbol is located. That is, the network side device may configure the last symbol reservation of the uplink reference signal subframe to ensure that all UEs in the cell do not send the uplink reference signal on the last symbol of the uplink reference signal subframe.

Correspondingly, the first designated symbol may be N except the last symbol in the subframe where the at least one symbol is located symbol.

For example, referring to FIG. 7, when the UE is in the ECO state, the uplink reference signal may be sent in a certain uplink reference signal subframe. The uplink reference signal subframe includes 14 symbols: a 0-symbol and a 13-symbol. Taking the No. 0 symbol as the first designated symbol as an example, the uplink reference signal sent on the No. 0 symbol can indicate that a state transition request is initiated to the network side device, and the network side device is requested to switch the UE from the ECO state to the Active state. Moreover, the 13th symbol of the subframe is reserved, and the uplink reference signal sent by the UE does not occupy the 13th symbol. The No. 1 symbol No. 12 symbol can be used to send an uplink reference signal, and the UE can determine, according to the uplink reference signal configuration information sent by the network side device, that all symbols or partial symbols in the No. 1 symbol No. 12 symbol are sent uplink. Reference signal signal. In addition, the uplink reference signal transmitted by the UE may occupy 1 RB, 2 RB, or 3 RB in the frequency domain, and the subcarriers in the occupied RB are consecutive.

It should be noted that, in the embodiment of the present invention, only the uplink reference signal sent by the UE is sent in units of subframes, and when the uplink reference signal sent by the UE is sent by using a time slot as an example, the time slot is used. It may be a first time slot or a second time slot, where the first time slot refers to the first half of the subframe in which the subframe is located, and the second time slot refers to the second half of the subframe in which the subframe is located.

In the first implementation manner, the UE may send the uplink reference signal in units of the second time slot in the time domain. That is, the uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol of the second time slot in which the at least one symbol is located is used to send the uplink reference signal, and the uplink reference signal sent by the UE is in the frequency domain. At least one resource block is occupied, and the subcarriers in the at least one resource block are consecutive.

In addition, the second time slot in which the uplink reference signal is located may further include a first designated symbol, and the uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request. The first designated symbol is N symbols in the second slot, and N is a positive integer. Moreover, the uplink reference signal sent by the UE may not occupy the last symbol of the second time slot, and the first designated symbol is any M symbols except the last symbol in the second time slot, Is a positive integer greater than or equal to 1.

For example, referring to FIG. 8, the second time slot in which the UE sends the uplink reference signal is located in the second half of the subframe in which the uplink reference signal is located, and the second time slot includes 7 symbols: the 7th symbol and the 13th symbol. Taking the 7th symbol as the first designated symbol as an example, the uplink reference signal sent on the 7th symbol can indicate that a state transition request is initiated to the network side device, and the network side device is requested to switch the UE from the ECO state to the active state. Moreover, the 13th symbol of the subframe is reserved, that is, the uplink reference signal sent by the UE does not occupy the 13th symbol. The 8th symbol and the 12th symbol can be used to transmit the uplink reference signal, and the UE can determine to send all symbols or part of the symbols in the 8th symbol and the 12th symbol according to the uplink reference signal configuration information sent by the network side device. Uplink reference signal. In addition, the uplink reference signal transmitted by the UE may occupy 1 RB, 2 RB, or 3 RB in the frequency domain, and the subcarriers in the occupied RB are consecutive.

For example, referring to FIG. 9, in one RB where the uplink reference signal transmitted by the UE shown in FIG. 9 is located, the uplink reference signal signal occupies a continuous carrier.

In the second implementation manner, the UE may send the uplink reference signal in units of the first time slot in the time domain. That is, the uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol of the first time slot in which the at least one symbol is located is used to send the uplink reference signal, and the uplink reference signal sent by the UE is in the frequency domain. At least one resource block is occupied, and the subcarriers in the at least one resource block are consecutive.

In addition, the first time slot in which the uplink reference signal is located may further include a first designated symbol, and the uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request, where the first designated symbol is N symbols in the second slot, N is a positive integer. The difference from the first implementation manner is that, since the symbol of the first time slot does not include the last symbol of the subframe, the uplink reference signal sent on all symbols of the first time slot is It does not conflict with the SRS sent by other Active UEs. Therefore, in the second implementation manner, the last symbol of the first time slot is not required to be reserved, that is, the uplink reference signal can occupy the first All symbols within the time slot. Correspondingly, the first designated symbol may be any T symbols in the first time slot, and T is a positive integer greater than or equal to 1.

For example, referring to FIG. 10, the first time slot in which the UE sends the uplink reference signal is located in the first half of the subframe in which the uplink reference signal is located, and the first time slot includes 7 symbols: the 0th symbol and the 6th symbol. Taking the No. 0 symbol as the first designated symbol as an example, the uplink reference signal sent on the No. 0 symbol can indicate that a state transition request is initiated to the network side device, and the network side device is requested to switch the UE from the ECO state to the Active state. The No. 1 symbol and the No. 6 symbol can be used to transmit the uplink reference signal, and the UE can determine to send on all symbols or part of the symbols in the No. 1 symbol-6 symbol according to the uplink reference signal configuration information sent by the network side device. Uplink reference signal. In addition, the uplink reference signal transmitted by the UE may occupy 1 RB, 2 RB, or 3 RB in the frequency domain, and the subcarriers in the occupied RB are consecutive.

Optionally, the uplink reference signal configuration information may further include a unit in the time domain of the uplink reference signal sent by the UE. The unit includes a subframe or a time slot, and is used to indicate whether the UE sends an uplink reference signal in one subframe or an uplink reference signal in one time slot. Further, the unit may further include a first time slot or a second time slot, configured to indicate whether the UE sends an uplink reference signal in the first time slot or an uplink reference signal in the second time slot. In an actual application, the network side device may send a unit parameter to the UE, which is used to indicate the unit of the uplink reference signal sent by the UE in the time domain.

Step 603: The network side device acquires the location of the UE and estimates the TA of the UE according to the uplink reference signal sent by the UE.

After receiving the uplink reference signal configuration information sent by the UE, the network side device may acquire the location of the UE according to the uplink reference signal configuration information and estimate the TA of the UE. Further, in the 5G system shown in FIG. 2, the UE may further select an optimal TP set for the UE to serve the UE according to the location of the UE, and update the TP-UE relationship table stored by the network side device. Or, the UE may further adjust the TA of the UE according to the estimated TA.

Optionally, the network side device may further detect an uplink reference signal sent by the UE on the first designated symbol, and determine, according to the detection result, whether to switch the UE from the first state to the second state. If the network side device detects the uplink reference signal sent by the UE on the first designated symbol, indicating that the UE initiates a state change request to the network side device, the network side device may obtain the UE from the current location. The first state is switched to the second state; if the network side device does not detect the uplink reference signal sent by the UE on the first designated symbol, indicating that the UE does not initiate a state transition request, the network side device may not The state is replaced, that is, the UE is not switched from the current first state to the second state, and the UE will maintain the current first state.

For example, when the network side device receives the uplink reference signal sent by the UE in the ECO state, and the uplink reference signal is also detected on the first designated symbol of the subframe where the uplink reference signal sent by the UE is located, the network side device can The UE is switched from the ECO state to the Active state.

In the prior art, the UE may send the SRS to the network side device, so that the network side device may acquire the location of the UE, the TA of the UE, and the like according to the SRS, and perform channel estimation according to the SRS. However, since the network side device needs to perform channel estimation according to the SRS, the SRS needs to occupy at least 4 RBs in the frequency domain, which consumes more resources and wastes resources for the ECO state UE that does not need channel estimation. . Moreover, in the current technology, the SRS occupies a "comb" spectrum in the frequency domain, that is, the SRS sequence is mapped to the frequency domain resources every other subcarrier, and therefore, the SRS occupies only half of the bandwidth under the same bandwidth. The accuracy of the TA caused by the network side device according to the SRS estimation is not high. In addition, in the prior art, SRS only allows transmission on the last symbol of the subframe in which it is located, and it is difficult to support a large number of users.

In addition, in the prior art, the UE may also send a random access preamble (Preamble) to the network side device on the physical random access channel (PRACH) in the process of random access, so that the network side device The transmission delay between the UE and the network side device is estimated according to the Preamble, so that the TA of the UE is adjusted. However, since there are 64 available Preamble sequences in each cell, the UE can select one of the sequences to transmit on the PRACH resources. Therefore, one PRACH resource can only support up to 64 UEs to send Preamble, and the number of users that can be supported is small. It is difficult to support a large number of ECO state UEs. Moreover, the PRACH occupies 6 RBs in the frequency domain and 1-3 subframes in the time domain. For the UE in the ECO state, the occupied resources are also large, and resources are wasted.

The uplink reference signal designed in the embodiment of the present invention only needs to occupy at least one resource block in the frequency domain, for example, can occupy 1 RB-3 RB in the frequency domain, and only needs to occupy one subframe or half subframe in the time domain. It occupies less resources and saves resources. Moreover, the sub-carriers of the uplink reference signal in the at least one resource block are contiguous. Therefore, the uplink reference signal can occupy the entire bandwidth under the same bandwidth, and the TA accuracy estimated by the network side device according to the uplink reference signal is also Higher. The sub-carrier spacing of each of the at least one resource block may be 15K, which is not limited in this embodiment of the present invention. In addition, the uplink reference signal occupies at least one symbol in the time domain, and the uplink symbol in the subframe where the at least one symbol is located can be used to send the uplink reference signal, and all the symbols in the subframe in which the uplink reference signal is located are implemented. Time division multiplexing increases the number of UEs that can be supported, so that a large number of UEs can be supported to transmit the uplink reference signal.

Further, the uplink reference signal is adapted to the UE in the ECO state, and the network side device does not need to perform channel estimation according to the uplink reference signal sent by the UE in the ECO state. The network side device can complete the location tracking of the ECO state UE, the TP attribution tracking of the UE, and the like in the "UE-centric Non-cell" network system scenario, which is provided by the embodiment of the present invention. And the TA estimation of the ECO state UE can be completed, and the uplink synchronization of the UE is maintained, so that the UE can always be online. Moreover, the ECO state UE only needs to send the uplink reference signal to the network side device in a long period of time, so that the network side device can track the UE, and the uplink reference signal is not frequently sent to the network side device. Therefore, the prior art is related to the prior art. In comparison, the UE is more power efficient and has less overhead on the air interface resources.

In summary, the method provided by the embodiment of the present invention provides an uplink reference signal that is sent by the UE, where the uplink reference signal sent by the UE occupies at least one symbol in the time domain, so that the uplink reference signal can be at least One symbol is time division multiplexed, and the uplink symbols in the subframe or time slot in which the at least one symbol is located are used to transmit the uplink reference signal, which ensures that the uplink reference signal can be further on all uplink symbols in the subframe or time slot. Time division multiplexing, and the uplink reference signal sent by the UE occupies consecutive subcarriers in the frequency domain and can configure bandwidth, so that the uplink reference signal can be frequency division multiplexed over the entire system bandwidth, so that a large number of UEs can be supported to transmit the uplink reference signal. And adapting to the ECO state UE, and the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, occupies less resources, and saves resources. Moreover, the uplink reference signal also carries a state transition request initiated by the UE in the ECO state, and implements state transition of the UE from the ECO to the Active state. In addition, by configuring the uplink reference signal to not occupy the last symbol of the subframe in which the at least one symbol is located, collisions with SRSs sent by other active UEs are avoided, and compatibility is enhanced.

All the foregoing optional technical solutions may be used in any combination to form an optional embodiment of the present application, and details are not described herein again.

FIG. 11 is a schematic structural diagram of a user equipment UE according to an embodiment of the present invention. Referring to FIG. 11, the UE includes:

The sending module 1101 is configured to send an uplink reference signal to the network side device.

The uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol in the subframe where the at least one symbol is located is used to send the uplink reference signal; the uplink reference signal sent by the UE occupies at least in the frequency domain. One Resource blocks, and the subcarriers in the at least one resource block are consecutive.

The UE provided by the embodiment of the present invention sends an uplink reference signal to the network side device, where the uplink reference signal sent by the UE occupies at least one symbol in the time domain, so that the uplink reference signal can be time-division multiplexed on at least one symbol. The uplink reference signal sent by the UE occupies consecutive subcarriers in the frequency domain and can configure the bandwidth, so that the uplink reference signal can be frequency-multiplexed and multiplexed over the entire system bandwidth, so that a large number of UEs can be supported to transmit the uplink reference signal, and is adapted to the ECO. The UE also occupies at least one resource block in the frequency domain, occupies less resources and saves resources.

Optionally, the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send the uplink reference signal.

Optionally, the uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request, where the state transition request indicates that the UE requests the network side device to switch the UE from the first state in which the UE is currently located. Up to the second state, the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.

Optionally, the symbol index of the first designated symbol is configured by the network side device.

Specifically, the symbol index of the first designated symbol is configured by the network side device by using a system broadcast message or a high layer signaling, where the system broadcast message may be an SIB message, an MIB message, or the like, and the high layer signaling may be RRC signaling. .

Optionally, the uplink reference signal on the first designated symbol is sent by using a preset contention mechanism.

Optionally, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

Optionally, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe where the at least one symbol is located.

Optionally, the UE further includes:

a receiving module, configured to receive uplink reference signal configuration information sent by the network side device, where the sending module is further configured to send the uplink reference signal according to the uplink reference signal configuration information, where the uplink reference signal configuration information includes the following information At least one item:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the periodic information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE transmits the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

All the foregoing optional technical solutions may be used in any combination to form an optional embodiment of the present application, and details are not described herein again.

FIG. 12 is a schematic structural diagram of a network side device according to an embodiment of the present invention. Referring to FIG. 12, the network side device includes:

The receiving module 1201 is configured to receive an uplink reference signal sent by the user equipment UE.

The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive.

The network side device provided by the embodiment of the present invention receives the uplink reference signal sent by the user equipment UE, where the uplink reference signal sent by the UE occupies at least one symbol in the time domain, so that the uplink reference signal can be scored on at least one symbol. Multiplexing, and the uplink reference signal sent by the UE occupies consecutive subcarriers in the frequency domain and can configure the bandwidth, so that the uplink reference signal can be frequency-multiplexed and multiplexed over the entire system bandwidth, so that a large number of UEs can be supported to transmit the uplink reference signal. It is adapted to the ECO state UE, and the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, occupies less resources and saves resources.

Optionally, the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send the uplink reference signal.

Optionally, the network side device further includes:

And a switching module, configured to detect, on the first designated symbol, an uplink reference signal sent by the UE, and determine, according to the detection result, whether to switch the UE from the first state to the second state, where the UE is in the first An uplink reference signal sent on a designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to switch the UE from the first state to the second state, where the A designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.

Optionally, the network side device further includes:

And a configuration module, configured to configure, to the UE, a symbol index of the first designated symbol.

Specifically, the configuration module is configured to configure a symbol index of the first designated symbol to the UE by using a system broadcast message, or the configuration module is configured to configure, by using high layer signaling, the symbol index of the first designated symbol to the UE. The system broadcast message may be an SIB message, an MIB message, or the like, and the high layer signaling may be RRC signaling.

Optionally, the first state is an eco-protection-optimized ECO state, and the second state is an active state.

Optionally, the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.

Optionally, the network side device further includes:

a sending module, configured to send uplink reference signal configuration information to the UE;

The uplink reference signal configuration information includes at least one of the following information:

The period information of the uplink reference signal sent by the cell where the UE is located

Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

The UE sends the periodic information of the uplink reference signal

And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

The UE transmits the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.

All the foregoing optional technical solutions may be used in any combination to form an optional embodiment of the present application, and details are not described herein again.

It should be noted that the UE and the network side device provided by the foregoing embodiments only use the division of the foregoing functional modules when transmitting the uplink reference signal. In actual applications, the foregoing functions may be assigned different functions according to requirements. The module is completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the UE and the network side device provided by the foregoing embodiment are in the same concept as the method for transmitting the uplink reference signal, and the specific implementation process is described in the method embodiment, and details are not described herein again.

FIG. 13 is a schematic structural diagram of a user equipment UE according to an embodiment of the present invention. Referring to FIG. 13, the UE includes a communication bus 1301, a memory 1302, a transmitter 1303, a receiver 1304, and a processor 1305. The machine 1303, the receiver 1304, and the processor 1305 communicate with each other through the communication bus 1301.

a memory 1302, configured to store a program;

a processor 1305, configured to call a program stored in the memory 1302, through the transmitter 1303 and the receiver 1304 is in communication with the designated network device, and implements the method steps performed by the UE in the foregoing embodiment. For example, it can be used to implement the function of the transmitting module in FIG.

The memory 1302 is further configured to store uplink reference signal configuration information sent by the network side device.

The processor 1305 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. These instructions may be implemented and controlled by a processor therein for performing the methods disclosed in the embodiments of the present invention. The processor may also be a general-purpose processor, a digital signal processor (English: digital signal processor, DSP for short), an application-specific integrated circuit (ASIC), or an off-the-shelf programmable gate array. : field programmable gate array (referred to as: FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

Wherein, the above general-purpose processor may be a microprocessor or the processor may be any conventional processor, decoder or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.

In addition, the communication bus 1301 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as communication bus 1301 in FIG.

In the embodiment of the present invention, the UE sends an uplink reference signal to the network side device according to the uplink reference signal configuration information configured by the network side device, where the uplink reference signal sent by the UE occupies at least one symbol in the time domain, where the at least one symbol The uplink symbols in the subframe in which the symbol is located are used to transmit the uplink reference signal, so that the uplink reference signal can be time-division multiplexed on all uplink symbols of one subframe, and the uplink reference signal sent by the UE occupies a contig in the frequency domain. The carrier can be configured with a bandwidth, so that the uplink reference signal can be frequency-division multiplexed over the entire system bandwidth, so that a large number of UEs can be supported to transmit the uplink reference signal to be adapted to the ECO state UE, and the uplink reference signal sent by the UE is in the frequency domain. At least one resource block is occupied, which occupies less resources and saves resources.

FIG. 14 is a schematic structural diagram of a network side device according to an embodiment of the present invention. The network side device may be a base station, a centralized controller, or the like, which is not limited in this embodiment of the present invention. Referring to FIG. 14, the network side device includes a communication bus 1401, a memory 1402, a transmitter 1403, a receiver 1404, and a processor 1405, wherein the memory 1402, the transmitter 1403, the receiver 1404, and the processor 1405 communicate with each other through the communication bus 1401.

a memory 1402, configured to store a program;

The processor 1405 is configured to invoke a program stored in the memory 1402, and communicate with the designated network device by using the transmitter 1403 and the receiver 1404 to implement the method steps performed by the network side device in the above embodiment. By way of example, the function of the receiving module in FIG. 12 can be implemented.

Optionally, the network side device may further include a communication interface, configured to support the network side device and other network side devices in the communication system, such as communication with a core network node.

The processor 1405 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. These instructions may be implemented and controlled by a processor therein for performing the methods disclosed in the embodiments of the present invention. The processor may also be a general-purpose processor, a digital signal processor (English: digital signal processor, referred to as DSP), an application-specific integrated circuit (ASIC), and an off-the-shelf programmable gate array (English) Text: field programmable gate array, referred to as: FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

Wherein, the above general-purpose processor may be a microprocessor or the processor may be any conventional processor, decoder or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.

In addition, the communication bus 1401 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as communication bus 1401 in FIG.

In the embodiment of the present invention, the network side device may receive the uplink reference signal sent by the user equipment UE, where the uplink reference signal sent by the UE occupies at least one symbol in the time domain, and the uplink symbol in the subframe where the at least one symbol is located The uplink reference signal is used to transmit the uplink reference signal, so that the uplink reference signal can be time-multiplexed on all uplink symbols of one subframe, and the uplink reference signal sent by the UE occupies consecutive subcarriers in the frequency domain and can configure bandwidth, so that the uplink reference is used. The signal can be frequency-division multiplexed over the entire system bandwidth, so that a large number of UEs can be supported to transmit the uplink reference signal to be adapted to the ECO state UE, and the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, occupying resources. Less, saving resources.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is an embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present application are intended to be included in the scope of the present application. .

Claims (29)

1. A method for transmitting an uplink reference signal, characterized in that the method comprises:

   The user equipment UE sends an uplink reference signal to the network side device.

   The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive of.
2. The method according to claim 1, wherein the uplink symbols in the subframe or time slot in which the at least one symbol is located are used to transmit an uplink reference signal.
3. The method according to claim 2, wherein the uplink reference signal sent by the UE on the first designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the The network side device switches the UE from the first state to the second state, where the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.
4. The method according to claim 3, wherein the symbol index of the first designated symbol is configured by the network side device.
5. The method according to claim 3 or 4, wherein the first state is an eco-protection-optimized ECO state and the second state is an active state.
6. The method according to any one of claims 1-5, wherein the uplink reference signal transmitted by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.
7. The method according to any one of claims 1 to 6, wherein the method further comprises:

   Receiving, by the UE, the uplink reference signal configuration information sent by the network side device, and sending the uplink reference signal according to the uplink reference signal configuration information;

   The uplink reference signal configuration information includes at least one of the following information:

   The period information of the uplink reference signal sent by the cell where the UE is located

   

   Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

   

   The UE sends the period information of the uplink reference signal

   

   And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

   

   The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

   The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.
8. A method for transmitting an uplink reference signal, characterized in that the method comprises:

   Receiving, by the network side device, an uplink reference signal sent by the user equipment UE;

   The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive of.
9. The method according to claim 8, wherein the uplink symbols in the subframe or time slot in which the at least one symbol is located are used to transmit an uplink reference signal.
10. The method of claim 9 wherein the method further comprises:

    The network side device detects an uplink reference signal sent by the UE on the first designated symbol, and determines, according to the detection result, whether to switch the UE from the first state to the second state, where the UE is The uplink reference signal sent on the first designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to switch the UE from the first state Up to the second state, the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.
11. The method of claim 10, wherein the method further comprises:

    The network side device configures a symbol index of the first designated symbol to the UE.
12. The method according to claim 10 or 11, wherein the first state is an eco-protection-optimized ECO state and the second state is an active state.
13. The method according to any one of claims 8 to 12, wherein the uplink reference signal transmitted by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.
14. The method according to any one of claims 8 to 13, wherein the method further comprises:

    And transmitting uplink reference signal configuration information to the UE, where the uplink reference signal configuration information includes at least one of the following information:

    The period information of the uplink reference signal sent by the cell where the UE is located

    

    Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

    

    The UE sends the period information of the uplink reference signal

    

    And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

    

    The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

    The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.
15. A user equipment UE, wherein the UE includes:

    a sending module, configured to send an uplink reference signal to the network side device;

    The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive of.
16. The UE according to claim 15, wherein an uplink symbol in a subframe or a time slot in which the at least one symbol is located is used to transmit an uplink reference signal.
17. The UE according to claim 16, wherein the UE sends an uplink on the first designated symbol. The reference signal is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to switch the UE from the first state to the second state, where the first designated symbol is N is a positive integer for the N symbols in the subframe or slot in which the at least one symbol is located.
18. The UE according to claim 17, wherein the symbol index of the first designated symbol is configured by the network side device.
19. The UE according to claim 17 or 18, wherein the first state is an eco-protection-optimized ECO state and the second state is an active state.
20. The UE according to any one of claims 15 to 19, wherein the uplink reference signal transmitted by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.
21. The UE according to any one of claims 15 to 20, wherein the UE further comprises:

    a receiving module, configured to receive uplink reference signal configuration information sent by the network side device;

    The sending module is further configured to send the uplink reference signal according to the uplink reference signal configuration information;

    The uplink reference signal configuration information includes at least one of the following information:

    The period information of the uplink reference signal sent by the cell where the UE is located

    

    Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

    

    The UE sends the period information of the uplink reference signal

    

    And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

    

    The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

    The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.
22. A network side device, where the network side device includes:

    a receiving module, configured to receive an uplink reference signal sent by the user equipment UE;

    The uplink reference signal sent by the UE occupies at least one symbol in the time domain; the uplink reference signal sent by the UE occupies at least one resource block in the frequency domain, and the subcarriers in the at least one resource block are consecutive of.
23. The network side device according to claim 22, wherein the uplink symbols in the subframe or the time slot in which the at least one symbol is located are used to send an uplink reference signal.
24. The network side device according to claim 23, wherein the network side device further comprises:

    a switching module, configured to detect, on a first designated symbol, an uplink reference signal sent by the UE, and determine, according to the detection result, whether to switch the UE from a first state to a second state, where the UE is The uplink reference signal sent on the first designated symbol is used to indicate that the UE initiates a state transition request, and the state transition request indicates that the UE requests the network side device to switch the UE from the first state Up to the second state, the first designated symbol is N symbols in a subframe or a time slot in which the at least one symbol is located, and N is a positive integer.
25. The network side device according to claim 24, wherein the network side device further comprises:

    And a configuration module, configured to configure, to the UE, a symbol index of the first designated symbol.
26. The network side device according to claim 24 or 25, wherein the first state is an eco-protection-optimized ECO state, and the second state is an active state.
27. The network side device according to any one of claims 22-26, wherein the uplink reference signal sent by the UE does not occupy the last symbol of the subframe in which the at least one symbol is located.
28. The network side device according to any one of claims 22-27, wherein the network side device further comprises:

    a sending module, configured to send uplink reference signal configuration information to the UE;

    The uplink reference signal configuration information includes at least one of the following information:

    The period information of the uplink reference signal sent by the cell where the UE is located

    

    Offset information of a subframe for transmitting an uplink reference signal with respect to a specified subframe

    

    The UE sends the period information of the uplink reference signal

    

    And the offset information of the symbol of the uplink reference signal sent by the UE relative to the second designated symbol

    

    The UE sends sequence index information (u, v) of the uplink reference signal and cyclic shift information α;

    The UE sends the frequency domain start position information f ₀ and the occupied bandwidth information W of the uplink reference signal in the frequency domain.
29. A transmission system for an uplink reference signal, characterized in that the system comprises the user equipment UE according to any one of claims 15-21 and the network side equipment according to any one of claims 22-28.

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