TWI551176B - A method, system and apparatus for carrying out uplink transfer - Google Patents

Description

Method, system and device for performing uplink transfer

The present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for performing uplink transfer.

In the current Long Term Evolution (LTE) system, there can only be one carrier in a community and the maximum bandwidth is 20 MHz. For the LTE-Advanced (LTE-A) system, the peak rate of the LTE-A system is greatly improved compared with the LTE system. The LTE-A system requires downlink 1 Gbps and uplink 500 Mbps. Obviously, the bandwidth of 20MHz can no longer meet this demand. In order to enable the LTE-A system to meet the requirements, Carrier Aggregation (CA) technology is introduced.

The carrier aggregation technology is that the user terminal can work simultaneously on multiple communities, and the communities can be continuous or discontinuous in the frequency domain, and the bandwidth of each community can be the same or different. To maintain compatibility with LTE systems, the maximum bandwidth limit for each community is 20 MHz. At present, it is generally considered that the number of communities aggregated by one user terminal is up to five. In addition, based on the fact that different communities may support different functions, the LTE-A system also classifies the communities aggregated by the user terminals, as follows: Primary Cell (PCell): Only one of the multiple communities aggregated by the user terminal is Defined as PCell, PCell is selected by the base station and controlled by radio resources. The (Radio Resource Control, RRC) signal is configured to the user terminal. Only the Physical Uplink Control Channel (PUCCH) is configured on the PCell.

Secondary Cell (SCell): All communities except PCell in all communities aggregated by user terminals are SCell.

The LTE-A version (Release, R) 10/R 11 specifies that the user equipment (User Equipment, UE) can only transmit the PUCCH on the PCell. Therefore, regardless of which carrier (or which transmitting entity) receives the downlink signal (or data) from different communities in which the UE aggregates using the same (or different) duplex mode, the uplink transmit power of the UE needs to be raised to the macro base station ( Macro Site) The extent to which it can be received. For example, in different scenarios of R10 UE carrier aggregation, different carriers aggregated by the UE belong to the same base station entity, and scheduling and uplink and downlink data transmission and reception of the UE are controlled by the same base station entity. The downlink of the UE can be received by the RRH entity or the Repeater entity even though the remote radio head (RRH) is remotely extended or supplemented by a repeater (Repeater), but due to PUCCH/uplink semi-persistent scheduling (Uplink) The uplink transmission such as the Semi-Persistent Scheduling (UL SPS) is limited to the primary component carrier (PCC), so the base station entity needs to directly receive the uplink of the UE.

For the LTE R10/R11 version of the UE, it can only aggregate the carrier resources of the same base station. Therefore, according to the current measurement mechanism, the base station can determine which community the UE transmits through, thereby reducing interference and saving power.

However, the R12 version of the UE may aggregate the resources of multiple base stations at the same time. If the local node is under the macro cover, the UE that is far away from the macro base station under the coverage of the local node still maintains its uplink transmission such as PUCCH/UL SPS. The limitation on the PCC will increase the interference and is not conducive to the power saving of the UE.

The embodiments of the present invention provide a method, a system, and a device for performing uplink transfer, which are used to solve the problem that the local node existing in the prior art is under the macro cover, and the UE that is far away from the macro base station under the coverage of the local node still maintains its uplink. The limitation of transmitting only by the PCC increases the interference and is detrimental to the problem of power saving by the UE.

The method for performing the uplink transfer according to the embodiment of the present invention includes: the network side device according to the path loss value between the user equipment and the at least one local node, and the path loss value between the user equipment and the network side device, Determining whether the uplink of the user equipment needs to be transferred; after determining that the uplink of the user equipment needs to be transferred, the network side device transfers the uplink of the user equipment to the local node.

Another method for performing the uplink transfer according to the embodiment of the present invention includes: after receiving the notification from the user equipment that the user needs to transfer the uplink, the network side device determines the uplink local node that accepts the user equipment, where the uplink needs to be transferred. The notification is that the user equipment determines that the uplink needs to be transferred according to the path loss value between the user equipment and the at least one local node and the path loss value between the user equipment and the network side device; the network side The device transfers the uplink of the user equipment to the determined local node.

The method for performing the uplink transfer according to the embodiment of the present invention includes: the user equipment is configured according to the user equipment and the at least one local node The path loss value and the path loss value between the user equipment and the network side device determine whether the uplink of the user equipment needs to be transferred. After determining that the uplink needs to be transferred, the user equipment sends the uplink to the network side device. announcement of.

The network side device for performing the uplink transfer according to the embodiment of the present invention includes: a first determining module, configured to: according to a path loss value between the user equipment and the at least one local node, and the user equipment and the network side device The path loss value is used to determine whether the uplink of the user equipment needs to be transferred. The first processing module is configured to transfer the uplink of the user equipment to the local node after determining that the uplink of the user equipment needs to be transferred. .

The network side device for performing the uplink transfer according to the embodiment of the present invention includes: a determining module, configured to: after receiving the notification that the user equipment needs to transfer the uplink, determine the uplink local node that accepts the user equipment, where The notification that the uplink needs to be transferred is that the user equipment determines, according to the path loss value between the user equipment and the at least one local node, and the path loss value between the user equipment and the network side device, that the uplink needs to be transferred and then sent. a second processing module, configured to transfer the uplink of the user equipment to the determined local node.

A user equipment for performing uplink transfer according to an embodiment of the present invention includes: a second determining module, configured to determine, according to a path loss value between the user equipment and the at least one local node, and a path loss value between the user equipment and the network side device, whether the uplink of the user equipment needs to be transferred The third processing module is configured to send a notification that the uplink needs to be transferred to the network side device after determining that the uplink needs to be transferred.

The UE that selects the uplink transmission according to the path loss is selected, and the UE that is under the common coverage of the local node and the macro base station but slightly distant from the macro base station can select the local node with the smaller path loss to receive the UE. The uplink signal, thereby reducing the UE's transmit power, reducing interference and saving the UE's power.

200‧‧‧First Judgment Module

210‧‧‧First Processing Module

600‧‧‧User equipment

610‧‧‧Network side equipment

710‧‧‧Determining modules

720‧‧‧Second processing module

810‧‧‧Second judgment module

820‧‧‧ third processing module

1 is a schematic flowchart of a first method for performing uplink transfer according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a first user equipment according to an embodiment of the present invention; FIG. 3 is a second method for performing uplink transfer according to an embodiment of the present invention; FIG. 4 is a schematic flowchart of a network side device side in a method for performing uplink transfer according to a second embodiment of the present invention; FIG. 5 is a schematic flowchart of a user equipment side in a method for performing uplink transfer according to a second embodiment of the present invention; FIG. 6 is a schematic structural diagram of a system for performing uplink transfer according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of a network side device in a system for performing uplink transfer according to an embodiment of the present invention; FIG. 8 is used in a system for performing uplink transfer according to an embodiment of the present invention; Schematic diagram of the device; FIG. 9 is a schematic diagram of a selection of a transmission node according to an embodiment of the present invention; and FIG. 10 is a schematic flowchart of a method for calculating a path loss by a network side device according to an embodiment of the present invention.

In the embodiment of the present invention, after determining that the uplink of the user equipment needs to be transferred according to the path loss value, the uplink of the user equipment is transferred to the local node; or the user equipment determines the uplink requirement of the user equipment according to the path loss value. After the transfer, the network side device is notified to transfer the uplink of the user equipment to the local node. The UE that selects the uplink transmission according to the path loss is selected, and the UE that is under the common coverage of the local node and the macro base station but slightly distant from the macro base station can select the local node with the smaller path loss to receive the UE. The uplink signal, thereby reducing the UE's transmit power, reducing interference and saving the UE's power.

The local node in the embodiment of the present invention includes, but is not limited to, at least one of the following: a low power base station (Pico) community, a home base station (Femto), an RRH, a Repeater, a relay device (RN), and a macro base station (Macro). Site).

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

In the embodiment of the present invention, the network side device may determine, according to the path loss value, whether the uplink of the user equipment needs to be transferred. The user equipment may determine, according to the path loss value, whether the uplink of the user equipment needs to be transferred and reported to the network. Roadside equipment, respectively, are introduced below.

1. The network side device determines whether the uplink of the user equipment needs to be transferred according to the path loss value.

As shown in FIG. 1, the first method for performing uplink transfer according to an embodiment of the present invention includes The following steps are as follows: Step 101: The network side device determines, according to the path loss value between the user equipment and the at least one local node, and the path loss value between the user equipment and the network side device, whether the uplink of the user equipment needs to be transferred; 102. After determining that the uplink of the user equipment needs to be transferred, the network side device transfers the uplink of the user equipment to the local node.

Preferably, in step 101, the manner in which the network side device determines the path loss value between the user equipment and the local node is various, and the following are listed: mode 1: the network side device according to the reference signal power of the at least one local node The value and the reference signal received by the user equipment receive the power value to determine the path loss value between the user equipment and the local node.

If the path loss value between the user equipment and the local node is only determined, the user equipment and the local device are determined according to the reference signal power value of the local node and the reference signal received power value reported by the user equipment. The path loss value between nodes. If it is necessary to determine the path loss value between the user equipment and the two or more local nodes, determine the path loss value between the user equipment and each local node respectively; in specific manner, according to a reference signal of a local node The power value and the reference signal received by the user equipment for the local node receive the power value, and determine the path loss value between the user equipment and the local node.

In an implementation, the network side device determines the path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the reference signal received by the user equipment. For example, the network side device can obtain the reference signal power information of other nodes, and the radio resource management through the UE (Radio Resource Magagement, RRM) measures the reported content and determines the path loss value between the UE and different local nodes.

Specifically, the network side device obtains the reference signal power value of the at least one local node of the UE by using the obtained reference signal of the other node, and obtains the measured reference signal received power value by using the RRM measurement report content of the UE, according to the obtained The reference signal power value of the local node and the reference signal received power value for the local node determine a path loss value between the UE and the local node. In the embodiment of the present invention, the other nodes refer to nodes other than the network side device, including at least one local node of the UE.

The RRM measurement report content reported by the R10 UE may carry signal strength and/or signal quality of multiple service communities. The network side device can determine whether the UE is closer to the local node by using the received signal measurement quantity of the multiple service communities (the signal measurement quantity, that is, the reference signal receiving power), and the local node's transmission power difference, thereby determining whether the UE is to be The uplink is all transferred to the local node to reduce the uplink power of the UE and save the power of the UE. For details, refer to FIG. 10 .

The network side device determines the path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the reference signal received by the user equipment, and can refer to the 3GPP TS 36.213 protocol. No longer.

Preferably, the network side device can obtain the reference signal power value of the at least one local node through an operation, management, and maintenance (OAM) device; and/or obtain the reference signal of the at least one local node through the X2 or S1 interface. Power value.

The reference signal power value of the embodiment of the present invention may be a cell-specific reference signal (CRS) power value or a channel state information measurement reference signal (CSI-RS) power value.

The X2 interface is the interface between the base stations, and the S1 interface for performing user data transmission, user data and signal processing between the base stations is a logical interface established between the radio access network node and the core network node, and is specifically divided into control. Surface interface (S1-MME) and user interface (S1-U). The S1-MME is a logical interface established between the radio access network node and the MME, and is used for transmitting control plane signals (refer to 3GPP TS36.413 for specific content of the signal). S1-U is a logical interface established between the radio access network node and the SGW for transmitting user plane data (see 3GPP TS 29.281 for the format of the user plane packet).

Manner 2: The network side device receives a path loss value from the user equipment and at least one local node.

If the user equipment is required to report the path loss value, the network side device obtains the reference signal power of the other node, and then sends the reference signal power to the user equipment, so that the user equipment can learn the downlink reference signal power of different local nodes, due to the use. The device can measure the downlink reference signal received power (RSRP) of different local nodes, so that the path loss values of different local nodes can be calculated by themselves.

If there are multiple local nodes, the user equipment can sort the nodes according to the path loss value from small to large, and report the identification information of the first N nodes, where N is a positive integer.

In the R10 carrier aggregation, the UE can receive the system information of the primary community through the broadcast (or dedicated signal), and acquire the system information of the secondary community through the dedicated signal, from the information element (IE) physical downlink shared channel common configuration (PDSCH-ConfigCommon) Obtain the CRS power of the primary/secondary community, measure the RSRP value of the primary/secondary community, and use the path loss formula to calculate the path loss between the UE and each community. The local node in the embodiment of the present invention may be in a different geographical location from the macro base station, and the frequency points of the local node and the macro base station are inconsistent. Recalculate the path loss between the UE and the local node.

When the user equipment determines the path loss value, the "reference signal power" and the "reference signal received power" need to be set as parameters for the same type of reference signal, which can only be CRS at the same time, or both are CSI-RS. Therefore, if the network interacts with CSI-RS power, the received power measured by the UE is also CSI-RS. For example, when the CSI-RS reference signal is used, the CSI-RS power needs to be notified to the UE through the OAM or the X2/S1 interface, and the UE needs to use the CSI-RS reference signal to perform RSRP measurement.

Preferably, if there are multiple local nodes, step 101 and step 102 may further include: the network side device selects an uplink local node that accepts the user equipment; correspondingly, in step 102, the network side device user The upstream of the device is transferred to the selected local node.

Preferably, in step 102, the network side device transfers the uplink of the user equipment to an uplink local node that has sufficient resources to receive the user equipment.

If there is only one local node, after determining that the uplink of the user equipment needs to be transferred, the network side device also needs to check whether the local node has sufficient resources to receive the uplink of the user equipment, and if so, the uplink of the user equipment. Go to the local node of the uplink with sufficient resources to accept the user equipment; otherwise, no transfer will be made.

If there are multiple local nodes, the network side device selects an uplink local node that accepts the UE from among the uplink local nodes that have sufficient resources to receive the user equipment.

Preferably, in step 102, the network side device compares the path loss value between the user equipment and the network side device with the path loss value between the user equipment and the at least one local node. If the path loss value between the user equipment and the at least one local node is smaller than the path loss value of the user equipment and the network side device, determining that the uplink of the user equipment needs to be transferred; otherwise, determining that the uplink of the user equipment is unnecessary Transfer.

In an implementation, if a path loss value between the user equipment and the at least one local node has a plurality of path loss values smaller than a path loss value of the user equipment and the network side device, the network side device takes a path from the user equipment. Select a local node from the local node whose loss value is smaller than the path loss value of the user equipment and the network side device.

For example, the path loss value between the user equipment and the local node A is smaller than the path loss value between the user equipment and the network side device, and the path loss value between the user equipment and the local node B is smaller than the path between the user equipment and the network side device. Loss value; then the network side device can select a local node from the local nodes A and B.

Preferably, if the path loss value between the user equipment and the at least one local node has a plurality of path loss values smaller than the path loss values of the user equipment and the network side device, the network side device may select the user equipment The local node with the lowest path loss value. Select the local node with the lowest path loss value of the user device.

Preferably, in step 102, if the path loss value between the user equipment and the at least one local node has a plurality of path loss values smaller than the path loss value of the user equipment and the network side device, the network side device and the user The local node of the device whose path loss value is smaller than the path loss value of the user equipment and the network side device is selected, and sufficient resources are selected to receive the uplink local node of the user equipment.

For example, the path loss value between the user equipment and the local node A is smaller than the path loss value between the user equipment and the network side device, and the path loss value between the user equipment and the local node B is smaller than The path loss value of the user equipment and the network side device, and the local node A has sufficient resources to accept, the network side device selects the local node A.

Preferably, the network side device may select a path loss from a sufficient resource admission, or select a sufficient resource from a local node that has a path loss value of the user equipment that is smaller than a path loss value of the user equipment and the network side device. The most local node.

In the embodiment of the present invention, the uplink transfer refers to receiving the uplink of the user equipment by using the selected local node. Then, the specific implementation manner of transferring the uplink of the user equipment to the local node may be: notifying the local node to receive the uplink of the user equipment.

Preferably, in step 102, after determining that the uplink of the user equipment needs to be transferred, the network side device notifies the selected local node to receive the PUCCH (Physical Uplink Control Channel) of the user equipment.

Preferably, in step 102, after determining that the uplink of the user equipment needs to be transferred, the network side device may further send a configuration signal to the user equipment to notify the user equipment to reduce the uplink transmission power.

For details on how to reduce the uplink transmit power of the user equipment, refer to the 3GPP TS 36.213 protocol, and details are not described herein.

In the embodiment of the present invention, all local nodes in the at least one local node belong to the network side device or part of the local node belongs to the network side device or all local nodes do not belong to the network side device.

Based on the same inventive concept, the network side device is further provided in the embodiment of the present invention. The method for solving the problem is similar to the method for performing the uplink transfer in the first embodiment of the present invention. See the implementation of the method, repeat No longer.

As shown in FIG. 2, the first network side device in the embodiment of the present invention includes: a first determining module 200 and a first processing module 210.

The first determining module 200 is configured to determine, according to the path loss value between the user equipment and the at least one local node, and the path loss value between the user equipment and the network side device, whether the uplink of the user equipment needs to be transferred; A processing module 210 is configured to transfer the uplink of the user equipment to the local node after determining that the uplink of the user equipment needs to be transferred.

Preferably, if there are multiple local nodes, the first processing module 210 selects an uplink local node that receives the user equipment; and transfers the uplink of the user equipment to the selected local node.

In a preferred manner, the first processing module 210 transfers the uplink of the user equipment to an uplink local node that has sufficient resources to receive the user equipment.

Preferably, the first determining module 200 determines the path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the community signal received power value reported by the user equipment; or receives the path loss value between the user equipment and the local node; The path loss value from the user device and at least one local node.

Preferably, the first determining module 200 acquires the reference signal power value of the at least one local node through the OAM device; and/or acquires the reference signal power value of the at least one local node through the X2 or S1 interface.

Preferably, the first determining module 200 compares the path loss values of the user equipment and the network side device with the path loss values between the user equipment and the at least one local node; The path loss value between the user equipment and the at least one local node is smaller than the path loss value of the user equipment and the network side device, and the uplink of the user equipment needs to be determined; otherwise, the uplink of the user equipment does not need to be transferred.

Preferably, if there are multiple path loss values in the path loss value between the user equipment and the at least one local node, the path loss value is smaller than the path loss value of the user equipment and the network side device; the first processing module 210 is from the user equipment. Select a local node from the local node whose path loss value is smaller than the path loss value of the user equipment and the network side device.

In a preferred manner, the first processing module 210 selects an uplink local node that has sufficient resources to receive the user equipment from the local node whose path loss value of the user equipment is smaller than the path loss value of the user equipment and the network side device. .

Preferably, the first processing module 210 selects a local node with the smallest path loss value of the user equipment.

In a preferred manner, the first processing module 210 notifies the selected local node to receive the PUCCH of the user equipment.

In a preferred manner, the first processing module 210 sends a configuration signal to the user equipment to notify the user equipment to reduce the uplink transmit power.

The network side device in the embodiment of the present invention may be a base station (such as a macro base station, a home base station, etc.), an RN (relay) device, or other network side devices.

In an implementation, the network side device in the embodiment of the present invention is a network side device to which the community accessed by the user equipment belongs.

2. The user equipment determines whether the uplink of the user equipment needs to be transferred and reported to the network side device according to the path loss value.

In the following description, the implementation of the cooperation between the network side and the user equipment side will be described first, and finally the implementation from the network side and the user equipment side will be explained separately, but this does not mean that the two must be implemented together, actually In the above, when the network side is implemented separately from the user equipment side, the problems existing on the network side and the user equipment side are also solved, but when the two are used in combination, a better technical effect is obtained.

As shown in Figure 3. The second method for performing the uplink transfer in the embodiment of the present invention includes the following steps: Step 301: The user equipment according to the path loss value between the user equipment and the at least one local node and the path loss between the user equipment and the network side device And determining, by the user equipment, that the uplink of the user equipment needs to be transferred. Step 302: After determining that the uplink needs to be transferred, the user equipment sends a notification that the uplink needs to be transferred to the network side device. Step 303: The network side device receives the requirement from the user equipment. After the uplink notification is transferred, the uplink local node that accepts the user equipment is determined; in step 304, the network side device transfers the uplink of the user equipment to the determined local node.

Preferably, in step 301, the user equipment determines a path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the community reference signal received power value.

After receiving the reference signal power of the other node, the network side device sends the reference signal power to the user equipment, so that the user equipment can learn the downlink reference signal power of different local nodes, because the user equipment can measure the downlink of different local nodes. RSRP, which can be self The row calculates the path loss value to different local nodes.

Preferably, the reference signal power value of the embodiment of the present invention is a CRS power value or a CSI-RS power value.

If the CSI-RS reference signal is used, the network side device needs to notify the CSI-RS power through the OAM or X2/S1 interface and deliver the power to the UE. The UE needs to use the CSI-RS reference signal to perform RSRP measurement.

For the method for the user equipment to calculate the path loss value of the different local nodes, refer to the 36.213 protocol, and details are not described herein.

In step 301, there are many ways for the user equipment to determine whether the uplink of the user equipment needs to be transferred. Two types are listed below.

Judging method 1: The user equipment compares the path loss value between the user equipment and the network side device with the path loss value between the user equipment and the at least one local node respectively; if the user equipment and the at least one local node The path loss value is smaller than the path loss value of the user equipment and the network side device, and it is determined that the uplink of the user equipment needs to be transferred; otherwise, it is determined that the uplink of the user equipment does not need to be transferred.

Correspondingly, the user equipment places the identification information of the local node with the path loss value of the user equipment that is smaller than the path loss value of the user equipment and the network side device in the notification that the uplink is required to be transferred.

If the plurality of local nodes can be notified, the user equipment can sort the identifiers of the nodes according to the path loss value from small to large, and place the identification information of the first N nodes into the notification that needs to be transferred, N=1, 2, 3..

Judging method 2, the user equipment is determined according to Offset' (offset) and at least After the path loss value between the local node is smaller than the path loss value of the user equipment and the network side device, the A3 measurement event is triggered, and the measurement result of the A3 measurement event is used as a notification that the uplink is required to be transferred; wherein Offset' is The difference in reference signal power between the network side device and the local node.

Specifically, in the second method of judgment, the existing A3 measurement event is utilized: the signal strength of the neighboring community is superior to the signal strength of the service community (PCell). The service community can only be PCell, and the neighboring community can be SCell or non-serving cell.

After obtaining the reference signal power value of the other node, the network side device performs a difference with the reference signal power value of the base station, and sends the difference to the UE as one of the offsets for triggering the A3 measurement event or the reference signal of the other node. The power value and the reference signal power value of the base station inform the user equipment that the user equipment calculates the difference by itself and uses the difference as one of the offsets of the A3 measurement event.

After the user equipment satisfies the formula 1, it is determined that there is a path loss value smaller than the user equipment and the network side device among the path loss values of the at least one local node, and triggers the reporting of the A3 measurement event, and the A3 measurement event is detected. The measurement results are used as notifications that need to be transferred upstream.

Local node signal > macro base station signal + Offset + Offset '........ Formula 1.

Where Offset' is the difference between the reference signal power of the local node and the macro base station; Offset may be the accumulation of one or more of the frequency offset, the community offset, and the event itself offset.

Preferably, in step 303, the network side device is notified by the need to transfer the uplink. Among the determined local nodes, sufficient resources are selected to receive the uplink local node of the user equipment.

Specifically, if the determining mode 1 is adopted, the network side device may select, from the notification that needs to transfer the uplink, a local node corresponding to the identifier as the uplink local node that receives the user equipment.

If there is only one identifier in the notification that the uplink is to be forwarded, the network side device also needs to check whether the local node corresponding to the identifier has sufficient resources to receive the uplink of the user equipment, and if yes, transfer the uplink of the user equipment to have sufficient The resource accepts the upstream local node of the user equipment; otherwise no transfer is made.

If there are multiple local nodes in the notification that the uplink is to be forwarded, the network side device determines that there are sufficient resources to receive the uplink local node of the user equipment from the local nodes corresponding to the multiple identifiers, and accepts the user from sufficient resources. One of the uplink local nodes of the device selects an uplink local node that accepts the UE; if there is sufficient resources to receive the uplink local node of the user equipment, no transfer is performed.

Preferably, the network side device may select a path loss from a sufficient resource admission, or select a sufficient resource from a local node that has a path loss value of the user equipment that is smaller than a path loss value of the user equipment and the network side device. The most local node.

Specifically, if the determining mode 2 is adopted, the user equipment performs A3 measurement and reporting only once for one local node, so after the A3 reporting, the network side device can determine the corresponding local node; then the network side device further determines the Whether the local node has sufficient resources to receive the uplink of the user equipment, and if so, the uplink of the user equipment is transferred to the uplink local node having sufficient resources to receive the user equipment; otherwise, no transfer is performed.

The specific manner is similar to the method of FIG. 1, and details are not described herein again.

If the judgment mode is adopted, before step 301, the method further includes: The network side device sends the reference signal power value of the network side device and the at least one local node to the user equipment, to notify the user equipment that the path loss value between the user equipment and the at least one local node is determined according to the reference signal power value and Determine the path loss value between the user device and the network side device.

In an implementation, the network side device acquires the reference signal power value of the at least one local node through the OAM device; and/or acquires the reference signal power value of the at least one local node through the X2 or S1 interface.

Preferably, the reference signal power value is a CRS power value or a CSI-RS power value.

If the determining method is used, the step 301 includes: the network side device sends the reference signal power difference between the network side device and the at least one local node as the offset Offset' to the user equipment, to notify the user equipment. The A3 measurement event is triggered according to Offset' after determining that the path loss value between the user equipment and the network side device is less than the path loss value between the user equipment and the network side device.

Preferably, in step 304, the network side device notifies the selected local node to receive the PUCCH of the user equipment.

Preferably, in step 304, the network side device sends a configuration signal to the user equipment; correspondingly, the user equipment reduces the uplink transmission power according to the received configuration signal of the network side device. That is, after the uplink of the user equipment is transferred to the determined local node, the configuration signal is sent to the user equipment to notify the user equipment to reduce the uplink transmission power.

Preferably, all local nodes in at least one local node belong to the network side. The device or part of the local node belongs to the network side device or all local nodes do not belong to the network side device.

As shown in FIG. 4, the method of the network side device side in the method for performing the uplink transfer in the second embodiment of the present invention includes the following steps: Step 401: After receiving the notification from the user equipment that the user equipment needs to transfer the uplink, the network side device determines Receiving an uplink local node of the user equipment, wherein the notification that the uplink is required to be transferred is determined by the user equipment according to the path loss value between the user equipment and the at least one local node and the path loss value between the user equipment and the network side device The uplink needs to be sent after the transfer; in step 402, the network side device transfers the uplink of the user equipment to the determined local node.

For the specific content of the network side device in the method for performing the uplink transfer, refer to the specific content of the network side device in FIG. 3, and details are not described herein again.

As shown in FIG. 5, the method on the user equipment side in the method for performing the uplink transfer in the second embodiment of the present invention includes the following steps: Step 501: The user equipment according to the path loss value between the user equipment and the at least one local node And determining a path loss value between the user equipment and the network side device, and determining whether the uplink of the user equipment needs to be transferred. Step 502: After determining that the uplink needs to be transferred, the user equipment sends a notification that the uplink needs to be transferred to the network side device.

For the specific content of the method on the user equipment side in the method for performing the uplink transfer, refer to the specific content of the user equipment in FIG. 3, and details are not described herein again.

Based on the same inventive concept, an embodiment of the present invention further provides an uplink The system of the transfer, the network side device and the user equipment in the system for performing the uplink transfer. Since the principle of solving the problem of these devices is similar to the method for performing the uplink transfer in FIG. 3, the implementation of these devices can be referred to the implementation of the method, and the method is repeated. I won't go into details here.

As shown in FIG. 6, the system for performing uplink transfer in the embodiment of the present invention includes: a user equipment 600 and a network side device 610.

The user equipment 600 is configured to determine, according to the path loss value between the user equipment 600 and the at least one local node, and the path loss value between the user equipment and the network side device 610, whether the uplink of the user equipment 600 needs to be transferred. After determining that the uplink needs to be transferred, the network side device 610 sends a notification that needs to transfer the uplink; the network side device 610 is configured to determine the uplink of the user equipment 600 after receiving the notification from the user equipment 600 that needs to transfer the uplink. The local node transfers the uplink of the user equipment 600 to the determined local node.

As shown in FIG. 7, the network side device in the system for performing uplink transfer according to the embodiment of the present invention includes: a determining module 710 and a second processing module 720.

The determining module 710 is configured to: after receiving the notification from the user equipment that needs to transfer the uplink, determine the uplink local node that receives the user equipment, where the notification that the uplink is required to be transferred is that the user equipment is based on the user equipment and the at least one local The path loss value between the nodes and the path loss value between the user equipment and the network side device are determined to be sent after the uplink needs to be transferred; the second processing module 720 is configured to transfer the uplink of the user equipment to the determined local node. .

In a preferred manner, the determining module 710 selects an uplink local node that has sufficient resources to receive the user equipment from the local nodes determined by the notification that needs to transfer the uplink.

Preferably, the determining module 710 sends the reference signal power value of the network side device and the at least one local node to the user equipment, to notify the user equipment that the user equipment determines the user equipment and the at least one local node according to the reference signal power value. The path loss value and the path loss value between the user equipment and the network side device.

Preferably, the determining module 710 acquires the reference signal power value of the at least one local node through the OAM device; and/or acquires the reference signal power value of the at least one local node through the X2 or S1 interface.

Preferably, if the network side device receives the notification that the user equipment needs to transfer the uplink, the measurement result of the A3 measurement event is determined; the determining module 710 uses the reference signal power difference between the network side device and the at least one local node as The offset Offset' is sent to the user equipment, and is used to notify the user equipment that the device triggers according to the Offset' after determining that the path loss value between the user equipment and the network side device is less than the path loss value between the user equipment and the network side device. The A3 measures the reporting of the event; or sends the reference signal power value of the network side device and the reference signal power value of the at least one local node to the user equipment, to notify the user equipment according to the reference signal power value of the network side device and at least The reference signal power value of a local node determines Offset', and triggers an A3 measurement event after determining that the path loss value between the local node and the at least one local node is less than the path loss value of the user equipment and the network side device according to Offset' Reported.

In a preferred manner, the second processing module 720 notifies the selected local node to receive the PUCCH of the user equipment.

In a preferred manner, the second processing module 720 sends a configuration signal to the user equipment to notify the user equipment to reduce the uplink transmit power.

As shown in FIG. 8, a user in a system for performing uplink transfer according to an embodiment of the present invention The device includes: a second judging module 810 and a third processing module 820.

The second determining module 810 is configured to determine, according to the path loss value between the user equipment and the at least one local node, and the path loss value between the user equipment and the network side device, whether the uplink of the user equipment needs to be transferred; The three processing module 820 is configured to send a notification that the uplink needs to be transferred to the network side device after determining that the uplink needs to be transferred.

In a preferred manner, the second determining module 810 determines a path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the small reference signal received power value.

Preferably, the second determining module 810 compares the path loss values of the user equipment and the network side device with the path loss values between the user equipment and the at least one local node respectively; if the user equipment and the at least one local node There is a path loss value between the user equipment and the network side device, and it is determined that the uplink of the user equipment needs to be transferred; otherwise, it is determined that the uplink of the user equipment does not need to be transferred.

Preferably, the second determining module 810 triggers an A3 measurement event after determining that the path loss value between the user equipment and the network side device is less than the path loss value between the user equipment and the network side device according to the offset amount Offset'. The measurement result of the A3 measurement event is used as a notification to transfer the uplink; where Offset' is the reference signal power difference between the network side device and the local node.

In a preferred manner, the third processing module 810 reduces the uplink transmit power after receiving the configuration signal from the network side device.

The network side device in the embodiment of the present invention may be a base station (such as a macro base station, a home base station, etc.), an RN (relay) device, or other network side devices.

In an implementation, the network side device in the embodiment of the present invention is a network side device to which the community currently accessed by the user equipment belongs.

As shown in FIG. 9 , in the transmission node selection diagram of the embodiment of the present invention, the local node is under the coverage of the macro base station, and the connection manner between the macro base station and the local node is negligible in optical fiber delay. If the UE is located in the common coverage area of the UE, the scheme of the embodiment of the present invention may select a node with a small path loss to provide services for the UE, and the PUCCH of the UE may be sent to the macro base station by using the local node. And since the PUSCH can be sent on different carriers, all uplink signals/data sent by the UE can be transited by the local node and then sent to the macro base station. Through the selection of the transmission node, the uplink and downlink transmission separation of the UE can be achieved, and the uplink transmission power of the UE is saved.

Although the uplink is sent to the local node, the downlink can still be sent by the macro base station, sent by the local node, or sent by the macro base station and the local node to implement downlink carrier aggregation and improve the downlink peak rate.

The uplink power saving of the UE may be based on transmitting the uplink data to the network side node with a small path loss between the UE and minimizing the uplink transmission power. The path loss between the UE and which network side node is small, and can be judged in different ways.

As shown in FIG. 10, the method for calculating a path loss by a network side device according to an embodiment of the present invention includes the following steps: Step 1010: A UE performs a general RRM measurement; Step 1011: A UE performs a measurement report, where the measurement result of all measurable service communities is carried. Step 1012: The network side device determines whether the UE uplink can be transferred to the local section. Point 1013, if possible, the network side device instructs the UE to reduce the transmit power.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Thus, the present invention can take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment combining soft and hardware aspects. Moreover, the present invention may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer usable code therein. .

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing device to produce a machine for executing instructions by a processor of a computer or other programmable data processing device Means are provided for implementing the functions specified in one or more of the flow or in one or more blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can boot a computer or other programmable data processing device to operate in a particular manner, such that instructions stored in the computer readable memory produce an article of manufacture including the instruction device. The instruction means implements the functions specified in one or more blocks of the flow or in a flow or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device to perform a series of operational steps on a computer or other programmable device to produce computer-implemented processing on a computer or other programmable device. The instructions executed on A step for implementing the functions specified in one or more blocks of a flow or a flow and/or a block diagram of a block diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (52)

A method for performing an uplink transfer, the method comprising: the network side device according to a path loss value between the user equipment and the at least one local node, and a path loss value between the user equipment and the network side device, Determining whether the uplink of the user equipment needs to be transferred; after determining that the uplink of the user equipment needs to be transferred, the network side device transfers the uplink of the user equipment to the local node, so that the user equipment is used by the local node. The uplink is transmitted to the network side device. The method for performing the uplink transfer, as described in claim 1, wherein the network side device further includes: if there is more, after determining that the uplink of the user equipment needs to be transferred, before the uplink of the user equipment is transferred to the local node, a local node, the network side device selects an uplink local node that accepts the user equipment; the network side device transfers the uplink of the user equipment to the local node, including: the network side device uplinks the user equipment Move to the selected local node. The method for performing the uplink transfer, as described in claim 1 or 2, wherein the network side device transfers the uplink of the user equipment to the local node, including: the network side device transfers the uplink of the user equipment to The resources are received on the upstream local node of the user equipment. The method for performing the uplink transfer, as described in claim 1, wherein the network side device determines a path loss value between the user equipment and the at least one local node in the following manner: the network side device is configured according to the at least one local node Reference signal power value and the use The reference signal received by the device receives the power value, determines the path loss value between the user equipment and the local node; or the network side device receives the path loss value from the user equipment and the at least one local node . The method for performing the uplink transfer according to claim 4, wherein the network side device acquires a reference signal power value of the at least one local node in the following manner: the network side device acquires at least one local node by operating, managing, and maintaining the OAM device The reference signal power value; and/or the network side device acquires the reference signal power value of the at least one local node through the X2 or S1 interface. The method for performing uplink transfer according to claim 4, wherein the reference signal power value is a community-specific reference signal CRS power value or a channel state information measurement reference signal CSI-RS power value. The method for performing the uplink transfer, as described in claim 1, wherein the network side device determines whether the uplink of the user equipment needs to be transferred in the following manner: the network side device uses the path loss value of the user equipment and the network side device Comparing with the path loss value between the user equipment and the at least one local node, respectively, if the path loss value between the user equipment and the at least one local node is smaller than the path of the user equipment and the network side device The value of the loss determines that the uplink of the user equipment needs to be transferred; otherwise, it determines that the uplink of the user equipment does not need to be transferred. The method for performing the uplink transfer, as described in claim 7, wherein the path loss value between the user equipment and the at least one local node has a plurality of path loss values smaller than the user equipment and the network The path loss value of the roadside device; the network side device selects the uplink local node of the user equipment, and the path loss value of the network side device from the user equipment is smaller than the user equipment and the network side device. In the local node of the path loss value, select a local node. The method for performing the uplink transfer, as described in claim 8, wherein the network side device selects the uplink local node of the user equipment, and the network side device has a path loss value from the user equipment that is smaller than the user. The local node of the device and the path loss value of the network side device selects sufficient resources to receive the uplink local node of the user equipment. The method for performing the uplink transfer, as described in claim 7, wherein the network side device selects an uplink local node that accepts the user equipment, and the method includes: the network side device selects a minimum path loss value between the user equipment and the user equipment. Local node. The method for performing the uplink transfer, as described in claim 1, wherein the network side device transfers the uplink of the user equipment to the local node, where the network side device notifies the selected local node to receive the physical uplink control of the user equipment. Channel (PUCCH). The method for performing the uplink transfer, as described in claim 1, wherein after determining that the uplink of the user equipment needs to be transferred, the network side device further includes: the network side device sending a configuration signal to the user equipment, to notify the The user equipment reduces the uplink transmit power. The method for performing the uplink transfer according to any one of the claims 1 to 2, wherein all the local nodes of the at least one local node belong to the network side device or part of the local node belongs to the network side device. Or all local nodes do not belong to the network side device. A method for performing an uplink transfer, the method includes: after receiving a notification from a user equipment that needs to transfer an uplink, the network side device determines, by the user equipment, an uplink local node that accepts the user equipment, where the uplink needs to be transferred The notification is that the user equipment determines that the uplink needs to be transferred according to the path loss value between the user equipment and the at least one local node and the path loss value between the user equipment and the network side device; the network side device The uplink of the user equipment is transferred to the determined local node to transmit the uplink of the user equipment to the network side device by the determined local node. The method for performing the uplink transfer, as described in claim 14, wherein the network side device determines the local node that receives the uplink of the user equipment, and the method includes: the network side device selects from the local node determined by the notification that needs to transfer the uplink. The resource accepts the upstream local node of the user equipment. The method for performing the uplink transfer, as described in claim 14, wherein before the network side device receives the notification from the user equipment that needs to transfer the uplink, the network side device further includes: the network side device, the network side device, and the at least one local node The reference signal power value is sent to the user equipment, to notify the user equipment to determine a path loss value between the user equipment and the at least one local node according to the reference signal power value, and determine the user equipment and the network side device The path loss value between. The method for performing the uplink transfer, as described in claim 16, wherein the network side device acquires a reference signal power value of the at least one local node in the following manner: the network side device acquires at least one local through an operation, management, and maintenance (OAM) device The reference signal power value of the node; and/or the network side device acquires the reference signal power value of the at least one local node through the X2 or S1 interface. The method for performing uplink transfer according to claim 16, wherein the reference signal power value is a community-specific reference signal CRS power value or a channel state information measurement reference signal CSI-RS power value. The method for performing the uplink transfer, as described in claim 14, wherein the network side device receives the notification that the user equipment needs to transfer the uplink is a measurement result of the A3 measurement event; the network side device receives the request from the user equipment. Before the notification of the uplink is sent, the network side device sends the reference signal power difference between the network side device and the at least one local node as the offset Offset' to the user equipment, to notify the user The device triggers the A3 measurement event according to the Offset' after determining that the path loss value between the user equipment and the network side device is less than the path loss value of the at least one local node; or the network side device The reference signal power value of the roadside device and the reference signal power value of the at least one local node are sent to the user equipment, to notify the user equipment according to the reference signal power value of the network side device and the reference signal power of the at least one local node. The value determines Offset' and is determined according to the Offset' with at least one local node The A3 measurement event is triggered after there is a path loss value between the user equipment and the network side device. The method for performing the uplink transfer, as described in claim 14, wherein the network side device transfers the uplink of the user equipment to the selected local node, where the network side device notifies the selected local node to receive the physical of the user equipment. Uplink Control Channel (PUCCH). The method for performing the uplink transfer, as described in claim 14, wherein the network side device transfers the uplink of the user equipment to the determined local node, and the method includes: the network side device sends a configuration signal to the user equipment, where The user equipment is notified to reduce the uplink transmit power. The method for performing an uplink transfer according to any one of the claims 14 to 21, wherein all local nodes of at least one local node belong to the network side device or part of the local node belongs to the network side device or all local nodes do not belong to The network side device. A method for performing an uplink transfer, the method comprising: the user equipment according to a path loss value between the user equipment and the at least one local node, and a path loss value between the user equipment and the network side device, Determining whether the uplink of the user equipment needs to be transferred; after determining that the uplink needs to be transferred, the user equipment sends a notification that the uplink needs to be transferred to the network side device, so as to transmit the uplink of the user equipment to the network side through the local node. device. The method for performing an uplink transfer as described in claim 23, wherein the user equipment determines a path loss value between the user equipment and the at least one local node in the following manner: The user equipment determines a path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the reference signal received power value. The method for performing uplink transfer according to claim 24, wherein the reference signal power value is a community-specific reference signal CRS power value or a channel state information measurement reference signal CSI-RS power value. The method for performing the uplink transfer, as described in claim 23, wherein the user equipment determines whether the uplink of the user equipment needs to be transferred in the following manner: the path loss value of the user equipment and the network side device Comparing with the path loss value between the user equipment and the at least one local node, respectively, if the path loss value between the user equipment and the at least one local node is smaller than the path of the user equipment and the network side device The value of the loss determines that the uplink of the user equipment needs to be transferred; otherwise, it determines that the uplink of the user equipment does not need to be transferred. The method for performing the uplink transfer, as described in claim 23, wherein the user equipment determines whether the uplink of the user equipment needs to be transferred in the following manner: the user equipment is determined to be at least one local node according to the offset Offset' After the path loss value is less than the path loss value of the user equipment and the network side device, the A3 measurement event is triggered, and the measurement result of the A3 measurement event is used as a notification that the uplink is required to be transferred; wherein the Offset' is The reference signal power difference between the network side device and the local node. The method of performing the uplink transfer as described in claim 23, wherein after the user equipment sends the notification that the uplink needs to be transferred to the network side device, the method further includes: The user equipment reduces the uplink transmit power after receiving the configuration signal from the network side device. The method for performing an uplink transfer according to any one of claims 23 to 28, wherein all local nodes of at least one local node belong to the network side device or part of the local node belongs to the network side device or all local nodes do not belong to The network side device. A network side device for performing uplink transfer, wherein the network side device includes: a first determining module, configured to: according to a path loss value between the user equipment and the at least one local node, and the user equipment and the network The path loss value between the roadside devices determines whether the uplink of the user equipment needs to be transferred. The first processing module is configured to: after determining that the uplink of the user equipment needs to be transferred, transfer the uplink of the user equipment to the local device. On the node, the uplink of the user equipment is transmitted to the network side device through the local node. The network side device that performs the uplink transfer, as described in claim 30, wherein the first processing module is further configured to: if there are multiple local nodes, select an uplink local node that accepts the user equipment; The upstream is transferred to the selected local node. The network-side device that performs the uplink transfer, as described in claim 30 or 31, wherein the first processing module is specifically configured to: transfer the uplink of the user equipment to an uplink localized that has sufficient resources to receive the user equipment. On the node. The network side device that performs the uplink transfer as described in claim 30, wherein the first determining module is specifically configured to: Determining a path loss value between the user equipment and the local node according to the reference signal power value of the at least one local node and the reference signal received power value reported by the user equipment; or receiving at least The path loss value between a local node. The network side device that performs the uplink transfer, as described in claim 33, wherein the first determining module is specifically configured to: obtain, by operating, managing, and maintaining the OAM device, a reference signal power value of the at least one local node; and/or pass the X2 Or the S1 interface acquires a reference signal power value of at least one local node. The network side device that performs the uplink transfer as described in claim 30, wherein the first determining module is specifically configured to: respectively: the path loss value of the user equipment and the network side device to the user equipment and the at least one local Comparing the path loss values between the nodes; if the path loss value between the user equipment and the at least one local node is less than the path loss value of the user equipment and the network side device, determining the uplink of the user equipment Need to transfer; otherwise it is determined that the uplink of the user equipment does not need to be transferred. The network side device that performs the uplink transfer, as described in claim 35, wherein the path loss value between the user equipment and the at least one local node has a plurality of path loss values smaller than the path of the user equipment and the network side device. The first processing module is configured to: select a local node from a local node that has a path loss value of the user equipment that is smaller than a path loss value of the user equipment and the network side device. The network side device that performs the uplink transfer as described in claim 36, wherein the first processing module is specifically configured to: the path loss value from the user equipment is smaller than the path loss value of the user equipment and the network side device In the local node, select sufficient resources to accept the upstream local node of the user equipment. The network side device that performs the uplink transfer as described in claim 35, wherein the first processing module is specifically configured to: select a local node with a minimum path loss value between the user equipment. The network side device that performs the uplink transfer according to any one of the claims 30, 31 or 33 to 38, wherein the first processing module is specifically configured to: notify the selected local node to receive physical uplink control of the user equipment. Channel (PUCCH). The network side device that performs the uplink transfer according to any one of the claims 30, 31 or 33 to 38, wherein the first processing module is further configured to: send a configuration signal to the user equipment, to notify the use The device reduces the uplink transmit power. A network side device for performing uplink transfer, wherein the network side device includes: a determining module, configured to: after receiving a notification from the user equipment that needs to transfer an uplink, determine an uplink local node that accepts the user equipment The notification that the uplink needs to be transferred is that the user equipment determines that the uplink needs to be transferred according to the path loss value between the user equipment and the at least one local node and the path loss value between the user equipment and the network side device. The second processing module is configured to transfer the uplink of the user equipment to the determined local node, The uplink of the user equipment is transmitted to the network side device by the determined local node. The network side device that performs the uplink transfer, as described in claim 41, wherein the determining module is specifically configured to: select, from the local node determined by the notification that needs to transfer the uplink, sufficient resources to receive the uplink local node of the user equipment. . The network side device that performs the uplink transfer, as described in claim 41, wherein the determining module is further configured to: send the reference signal power value of the network side device and the at least one local node to the user equipment, to notify the The user equipment determines a path loss value between the user equipment and the at least one local node according to the reference signal power value and determines a path loss value between the user equipment and the network side device. The network side device that performs the uplink transfer, as described in claim 43, wherein the determining module is specifically configured to: obtain, by operating, managing, and maintaining the OAM device, a reference signal power value of the at least one local node; and/or by using X2 or S1 The interface obtains a reference signal power value of at least one local node. The network side device that performs the uplink transfer as described in claim 41, wherein the network side device receives the notification that the user equipment needs to transfer the uplink is a measurement result of the A3 measurement event; the determining module is further configured to: The reference signal power difference between the network side device and the at least one local node is Sending to the user equipment, the offset Offset' is used to notify the user equipment that the path loss value between the user equipment and the network side device is smaller than the user equipment and the network side device according to the Offset After the path loss value, the A3 measurement event is triggered or the reference signal power value of the network side device and the reference signal power value of the at least one local node are sent to the user equipment, to notify the user equipment according to the network side device The reference signal power value and the reference signal power value of the at least one local node determine Offset', and according to the Offset', determine that the path loss value with the at least one local node is smaller than the user equipment and the network side device After the path loss value, the A3 measurement event is triggered. The network side device that performs the uplink transfer according to any one of the preceding claims, wherein the second processing module is configured to: notify the selected local node to receive the physical uplink control channel (PUCCH) of the user equipment. . The network side device that performs the uplink transfer according to any one of the preceding claims, wherein the second processing module is further configured to send a configuration signal to the user equipment, to notify the user equipment to reduce the uplink. Transmit power. A user equipment for performing an uplink transfer, the user equipment comprising: a second determining module, configured to: according to a path loss value between the user equipment and the at least one local node, and the user equipment and network The path loss value between the roadside devices determines whether the uplink of the user equipment needs to be transferred. The third processing module is configured to send a notification that the uplink is required to be sent to the network side device after determining that the uplink needs to be transferred. The node transmits the uplink of the user equipment to the network side device. The user equipment that performs the uplink transfer, as described in claim 48, wherein the second determining module is configured to determine the user equipment and the local device according to the reference signal power value of the at least one local node and the reference signal received power value. The path loss value between nodes. The user equipment that performs the uplink transfer, as described in claim 48, wherein the second determining module is specifically configured to: respectively: the path loss value of the user equipment and the network side device to the user equipment and the at least one local Comparing the path loss values between the nodes; if the path loss value between the user equipment and the at least one local node is less than the path loss value of the user equipment and the network side device, determining the uplink of the user equipment Need to transfer; otherwise it is determined that the uplink of the user equipment does not need to be transferred. The user equipment that performs the uplink transfer as described in claim 48, wherein the second determining module is specifically configured to: according to the offset Offset', determine that the path loss value between the at least one local node is smaller than the use After the path loss value of the device and the network side device, the A3 measurement event is triggered, and the measurement result of the A3 measurement event is used as a notification that the uplink is needed; wherein the Offset' is between the network side device and the local node. Reference signal power difference. The user equipment that performs the uplink transfer as described in any one of the claims 48 to 51, wherein the third processing module is further configured to: reduce the uplink transmit power after receiving the configuration signal from the network side device.