CN103024924B - Connection establishment method, device and system for D2D (device-to-device) terminals - Google Patents

Connection establishment method, device and system for D2D (device-to-device) terminals Download PDF

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Publication number
CN103024924B
CN103024924B CN201110300160.4A CN201110300160A CN103024924B CN 103024924 B CN103024924 B CN 103024924B CN 201110300160 A CN201110300160 A CN 201110300160A CN 103024924 B CN103024924 B CN 103024924B
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configuration parameters
base station
link configuration
value
rrc connection
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CN103024924A (en
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常俊仁
冯淑兰
时洁
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Honor Device Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201110300160.4A priority Critical patent/CN103024924B/en
Priority to PCT/CN2012/082341 priority patent/WO2013044855A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明实施例公开了一种设备到设备D2D终端的连接建立方法、装置和系统。所述方法包括：第一用户设备UE向所述基站发送前导码preamble；第一UE接收所述基站响应于所述preamble所发送的随机接入响应消息；第一UE向所述基站发送第二UE标识，所述第二UE是第一UE的D2D通信目标；第一UE接收基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数和RRC连接配置参数；第一UE基于所述第一UE的D2D链路配置参数与所述第二UE建立D2D连接，并基于所述RRC连接配置参数完成与基站的RRC连接建立。

The embodiment of the present invention discloses a device-to-device D2D terminal connection establishment method, device and system. The method includes: a first user equipment UE sends a preamble to the base station; the first UE receives a random access response message sent by the base station in response to the preamble; the first UE sends a second preamble to the base station UE identity, the second UE is the D2D communication target of the first UE; the first UE receives the D2D link configuration parameters and RRC connection configuration parameters of the first UE returned by the base station in response to the second UE identity; the first The UE establishes a D2D connection with the second UE based on the D2D link configuration parameters of the first UE, and completes the establishment of the RRC connection with the base station based on the RRC connection configuration parameters.

Description

Connection establishment method, device and system of D2D terminal
Technical Field
The present invention relates to communication technologies, and in particular, to a method, an apparatus, and a system for establishing a Device-to-Device (D2D) terminal connection.
Background
In a cell network, when a User Equipment (UE) needs to communicate with other UEs, it is usually necessary to perform centralized control by a base station, for example, an Evolved Node B (eNB) in an LTE network controls a signal connection procedure such as call setup between UEs of both calling parties. The advantage of the base station coordinated control of the communication links between users is that the base station can centrally manage the use of radio resources in the cell, so that the radio resources are reasonably and effectively distributed, and simultaneously, the radio interference between users can be well avoided. However, when two user equipments are relatively close to each other, if communication is performed through the base station, radio resources are wasted. Compared with the communication mode of the cell mode, the D2D communication can save half of the radio resources when the same data amount is transmitted. The D2D communication is direct communication between terminals, so information transmitted between terminals of the D2D communication need not pass through the base station.
In an existing wireless network, when a UE in an idle mode receives a paging message (paging) sent by a network side, the UE first needs to acquire a Timing Advance (TA) value and/or a suitable transmission power value through a Random Access (RA) process to establish a connection with the network, so as to transmit user data.
A signaling diagram of UE and eNB connection establishment in the prior art is shown in fig. 1.
Step 11, the first UE sends a Preamble to the eNB;
step 12, the eNB returns a Random Access response message (Random Access response message) to the first UE, where the response message includes an uplink synchronization TA value and a suitable transmission power;
step 13, the first UE sends RRC connection establishment request information to the eNB by using the transmitting power;
step 14, the eNB returns a conflict resolution message (content resolution) to the first UE;
step 15, the eNB returns RRC connection configuration parameters to the first UE;
step 16, the first UE sends an RRC connection setup complete message to the eNB.
However, for the UEs with closer D2D, the UEs have approximately the same TA and/or transmission power, so when the eNB calls the second UE of the called party for data transmission of D2D, if the base station establishes a connection with the second UE according to the communication method shown in fig. 1, the second UE of the called party performs an unnecessary random access procedure, thereby increasing the delay of connection establishment.
Disclosure of Invention
The embodiment of the invention provides a connection establishment method, a device and a system for a D2D terminal, which can solve the problem that in the prior art, when a UE at a short distance performs D2D communication, time delay is increased because a called user terminal executes an unnecessary random access process.
In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:
in one aspect, an embodiment of the present invention provides a method for establishing a connection from a device to a device D2D terminal, where the method includes: the first user equipment UE sends a preamble to the base station; the first UE receives a random access response message sent by the base station in response to the preamble; the first UE sends a second UE identity to the base station, wherein the second UE is a D2D communication target of the first UE; the first UE receives the D2D link configuration parameters and the RRC connection configuration parameters of the first UE, which are returned by the base station in response to the second UE identification; the first UE establishes a D2D connection with the second UE based on the D2D link configuration parameters of the first UE and completes RRC connection establishment with a base station based on the RRC connection configuration parameters.
On the other hand, an embodiment of the present invention provides a method for establishing a connection from a device to a device D2D terminal, including: the second User Equipment (UE) receives a paging message from the base station and acquires the D2D link configuration parameters of the second UE based on the paging message; the second UE establishes a D2D connection with the first UE based on the D2D link configuration parameters of the second UE.
On the other hand, an embodiment of the present invention provides a method for establishing a connection from a device to a device D2D terminal, including: the second User Equipment (UE) receives the D2D link configuration parameters and the RRC connection configuration parameters of the second UE, which are forwarded by the first UE from the base station; the second UE establishes a D2D connection with the first UE based on the D2D link configuration parameters of the second UE and completes the RRC connection establishment with the base station based on the RRC connection configuration parameters.
On the other hand, an embodiment of the present invention provides a method for establishing a connection from a device to a device D2D terminal, including: receiving a preamble from a first UE; responding to the preamble and sending a random access response message to the first UE; receiving a second UE identity from a first User Equipment (UE); transmitting, to a first UE, the D2D link configuration parameters of the first UE based on the second UE identity, the D2D link configuration parameters of the first UE being for D2D connectivity of the first UE with the second UE.
In another aspect, an embodiment of the present invention provides a first user equipment UE, including: the first sending device is used for sending a preamble to a base station and sending a second UE identity to the base station, wherein the second UE is a D2D communication target of the first UE; a first receiving device, configured to receive a random access response message sent by the base station in response to the preamble, and configured to receive a D2D link configuration parameter and an RRC connection configuration parameter of the first UE, which are returned by the base station in response to the second UE identity; and a first connection establishing device, configured to establish a D2D connection with the second UE based on the D2D link configuration parameters of the first UE, and complete RRC connection establishment with a base station based on the RRC connection configuration parameters.
In another aspect, an embodiment of the present invention provides a second user equipment UE, including: the second receiving device is used for receiving the paging message from the base station and acquiring the D2D link configuration parameters of the second UE based on the paging message; second connection establishing means for establishing a D2D connection with the first UE based on the D2D link configuration parameters of the second UE.
In another aspect, an embodiment of the present invention provides a second user equipment, including: third receiving means, configured to receive the D2D link configuration parameter and the RRC connection configuration parameter of the second UE forwarded by the first UE from the base station; third connection establishing means for establishing a D2D connection with the first UE based on the D2D link configuration parameters of the second UE, and completing RRC connection establishment with a base station based on the RRC connection configuration parameters.
In another aspect, an embodiment of the present invention provides a base station, including: a fourth receiving device, configured to receive the preamble from the first UE, and to receive the second UE identity from the first UE; a fourth sending device, configured to send a random access response message to the first UE in response to the preamble, and send a D2D link configuration parameter of the first UE to the first UE based on the second UE identity, where the D2D link configuration parameter of the first UE is used for the D2D connection between the first UE and the second UE.
In another aspect, an embodiment of the present invention provides a communication system, which includes the first user equipment, the second user equipment, and a base station.
The embodiment of the invention only needs the process of random access between the calling user equipment and the base station, and the random access process does not need to be repeated between the called user equipment and the base station, thereby reducing the time delay of D2D connection establishment. The embodiment of the invention can also avoid the influence of the paging process on the core network, and further reduce the time delay of D2D connection establishment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a signaling diagram illustrating connection establishment between a UE and an eNB in the prior art;
fig. 2 shows a schematic flow chart of a connection setup method of a D2D terminal according to one embodiment of the invention;
fig. 3 shows a schematic flow chart of a connection setup method of a D2D terminal according to another embodiment of the invention;
FIG. 4 shows a schematic block diagram of a first UE according to one embodiment of the invention;
FIG. 5 shows a schematic block diagram of a second UE according to an embodiment of the present invention;
FIG. 6 shows a schematic block diagram of a second UE according to an embodiment of the present invention;
fig. 7 shows a schematic block diagram of a base station according to an embodiment of the present invention.
Detailed Description
The following describes a connection establishment method, system and apparatus for the D2D terminal in detail.
Fig. 2 shows a schematic flow chart of a connection setup method of a D2D terminal according to one embodiment of the invention.
Referring to fig. 2, to establish a D2D connection between a first UE of a calling user equipment and a second UE of a called user equipment, the following steps are performed:
step 201: the first user equipment UE sends a preamble to a base station;
step 202: the base station sends a random access Response (RA) response message to the first UE after receiving the preamble sent by the first UE, so that the first UE receives the random access response message sent by the base station in response to the preamble. The message may carry a timing advance TA value and/or a transmission power value for the first UE, so as to be used by the first UE accessing the base station.
Step 203: the first UE sends a second UE identity to the base station, the second UE being a D2D communication target of the first UE, i.e., the first UE is to establish D2D communication with the second UE. The second UE identity may be, for example, a temporary mobile subscriber identity (S-TMSI) or other identity of the second UE. The first UE may obtain the identity of the second UE by detecting the second UE, or may use the subscriber number of the second UE. The first UE may send an RRC connection establishment request message to the base station, where the RRC connection establishment request message carries the second UE identity.
Step 204: the base station sends the D2D link configuration parameters and the RRC connection configuration parameters of the first UE to the first UE in response to the second UE identification, so that the first UE receives the D2D link configuration parameters and the RRC connection configuration parameters of the first UE returned by the base station in response to the second UE identification, wherein the D2D link configuration parameters are used for the D2D connection between the first UE and the second UE. Specifically, the D2D link configuration parameters and RRC connection configuration parameters include static or semi-static parameter configurations of each of a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. Here, the base station may send an RRC connection setup message to the first UE, in which the D2D link configuration parameters of the first UE returned by the base station in response to the second UE identity are carried. It is also possible that the base station transmits scheduling information of the D2D link configuration parameter and the RRC connection configuration parameter of the first UE to the first UE through a D2D cell radio network temporary identifier (D2D-C-RNTI) scrambling Physical Downlink Control Channel (PDCCH), so that the first UE descrambles the physical downlink control channel PDCCH by using the D2D-C-RNTI to acquire the scheduling information of the D2D link configuration parameter and the RRC connection configuration parameter of the first UE transmitted by the base station, and further acquires the D2D link configuration parameter and the RRC connection configuration parameter of the first UE according to the scheduling information. In the case of transmitting the scheduling information using the D2D-C-RNTI, the first UE needs to first acquire the D2D-C-RNTI allocated by the base station. For this reason, the first UE may obtain the D2D-C-RNTI through an RA response message or a content response message sent by the base station, where the D2D-C-RNTI is carried in the RA response message or the content response message, or the first UE may also receive a D2D-C-RNTI allocation message directly sent by the base station.
Step 205: the base station sends a paging message to the second UE, where the paging message is used to indicate the D2D link configuration parameter and the RRC connection configuration parameter of the second UE, and the paging message may also carry a timing advance TA value and/or a transmission power value for the second UE, or may indicate that the first UE and the second UE share the timing advance TA value and/or the transmission power value, so that the second UE uses the TA value and/or the transmission power value shared with the first UE as the TA value and/or the transmission power value of the second UE to access the second UE to the base station. In addition, the paging message also includes S-TMSI of the second UE, and Cell-Radio Network Temporary Identity (C-RNTI) allocated to the second UE. Accordingly, the second UE correspondingly receives the paging message from the base station, and acquires the D2D link configuration parameters and the RRC connection configuration parameters of the second UE based on the paging message, wherein the D2D link configuration parameters are used for the D2D connection between the second UE and the first UE. The D2D link configuration parameters and the RRC connection configuration parameters of the second UE may be carried in a paging message sent by the base station to the second UE, or may be sent a paging response message after the second UE receives the paging message from the base station and determines that D2D communication is allowed, so as to confirm that D2D communication is possible, and after that, the base station sends the D2D link configuration parameters and the RRC connection configuration parameters of the second UE to the second UE through another message. In addition, it is also possible that the base station transmits scheduling information of a D2D link configuration parameter and an RRC connection configuration parameter of the second UE to the second UE through a D2D-C-RNTI scrambled Physical Downlink Control Channel (PDCCH), so that the second UE descrambles the physical downlink control channel PDCCH by using the D2D-C-RNTI to acquire the scheduling information of the D2D link configuration parameter and the RRC connection configuration parameter of the second UE transmitted by the base station, and further acquires the D2D link configuration parameter and the RRC connection configuration parameter of the second UE according to the scheduling information. The second UE may also use the D2D-C-RNTI to obtain the timing advance TA value and/or the transmit power value. It should be noted that, in the case of transmitting the scheduling information using the D2D-C-RNTI, the second UE needs to first acquire the D2D-C-RNTI allocated by the base station. For this purpose, the second UE receives the D2D-C-RNTI allocation message sent by the base station, and the D2D-C-RNTI allocation message may be carried in the paging message sent by the base station to the second UE or may be sent through a separate message.
Before the base station sends the paging message to the second UE, the base station may further allocate an uplink grant UL grant to the second UE according to the C-RNTI of the second UE, where the UL grant may be included in the paging message sent by the base station and sent to the second UE, or may be sent to the second UE as a separate message by the base station.
Step 206: and the first UE establishes D2D connection with the second UE and completes the RRC connection establishment with the base station based on respective RRC connection configuration parameters. Since the first UE obtained its D2D link configuration parameters through step 204 and the second UE obtained its D2D link configuration parameters through step 205, the first UE and the second UE may establish a D2D connection with each other. After the connection establishment, the first UE and the second UE may respectively send an RRC connection establishment complete message and a D2D connection configuration complete message to the base station.
In this embodiment, the TA value and/or the transmission power value of the second UE may be a TA value and/or a transmission power value shared with the first UE. There may be a variety of ways to determine whether a first UE shares a TA value and/or a transmit power value with a second UE. One way is that, before step 201, the first UE detects the second UE to obtain a path loss or a distance between the first UE and the second UE, and also obtains a second UE identity, and the first UE determines, according to the path loss or the distance, that the second UE can share the TA value and/or the transmission power value with the first UE. At this time, the first UE may send, to the base station, the RRC connection establishment request message carrying indication information indicating that the first UE and the second UE share the time advance TA value and/or the transmission power value, and the second UE identifier, so that the base station can send the shared TA value and/or the transmission power value to the second UE. Alternatively, before step 201, the first UE detects the second UE to obtain the path loss or distance between the first UE and the second UE, and also obtains the second UE identity. The first UE then reports the pathloss or distance and the second UE identity to the base station for the base station to determine whether the second UE is able to share a TA value and/or a transmit power value with the first UE. When the base station determines that the second UE can share the TA value and/or the transmission power value with the first UE, the base station sends the shared TA value and/or the transmission power value to the second UE.
In this embodiment, when the first UE and the second UE listen to the PDCCH through the D2D-C-RNTI allocated by the base station to obtain the scheduling information, and receive one or more of the RRC connection configuration parameter, the D2D link configuration parameter, and the TA value and/or the transmission power value information for the second UE according to the scheduling information, the method for using the D2D-C-RNTI to perform the monitoring and transmitting of the PDCCH is specifically as follows:
the first UE and the second UE monitor by using the D2D-C-RNTI, the base station sends the PDCCH by using the D2D-C-RNTI, and the PDCCH is added with the following new indication information:
00 denotes that both UEs need to receive downlink DL-SCH resources from the base station;
10, the main UE of the Ud link transmits and the auxiliary UE monitors;
01 represents that the primary UE of the Ud link receives and the auxiliary UE transmits;
11 (or resource information indicating that both UEs need to transmit uplink UL-SCH to the base station, the resource may be divided into two parts for use by the two UEs, respectively).
In the above, only two UEs are taken as an example, if the number of UEs exceeds two, more bit information may be used to indicate the transceiving operation of each UE. That is, the PDCCH scheduling information of the D2D UE transmitted by the base station using the D2D-C-RNTI scrambling includes the following information:
receiving and sending state indication information of each UE in a currently scheduled time unit;
the indication information of the receiving and sending states of each UE can be indicated through bits at different positions, and the position information in the indication information corresponding to each UE can be pre-configured through high-level signaling.
In this embodiment, the first UE and the second UE are sent their respective D2D link configuration parameters by the base station. It can be seen that, in the process of establishing the D2D communication between the first UE and the second UE, only the random access process needs to be performed between the first UE and the base station, and the second UE and the base station do not need to repeatedly perform the random access, thereby reducing the time delay of the D2D connection establishment. In addition, because the S-TMSI is unique within the TA range and unique within the base station range, there is no need for the base station to inform the Mobility Management Entity (MME) that the paging for the second UE will be performed during the paging of the second UE by the base station, which avoids the impact of the paging procedure on the core network, thereby further reducing the delay of the D2D connection establishment. The present invention does not limit whether the base station performs paging through the MME.
In addition, in the communication process, the first UE or the second UE may detect the path loss or the distance between the first UE and the second UE periodically or event-triggered, and after the first UE and the second UE establish a connection with the network, the subsequent base station may separately maintain TA updates of the first UE and the second UE, that is, separately send a TA command to the first UE and the second UE. Or determining to use a TA command for updating according to the distance information reported by the UE at regular time or event trigger, and if one TA command is used, the first UE and the second UE both use the point-to-point cell radio network temporary identifier (D2D-C-RNTI) to obtain the scheduling information of the TA command, and then update according to the obtained TA command.
Fig. 3 shows a schematic flow chart of a connection setup method of a D2D terminal according to another embodiment of the invention.
Referring to fig. 3, to establish a D2D connection between a first UE of a calling user equipment and a second UE of a called user equipment, the following steps are performed:
step 301: the first user equipment UE sends a preamble to a base station;
step 302: the base station sends a random access Response (RA) response message to the first UE after receiving the preamble sent by the first UE, so that the first UE receives the random access response message sent by the base station in response to the preamble. The message may carry a timing advance TA value and/or a transmission power value for the first UE, so as to be used by the first UE accessing the base station.
Step 303: the first UE sends a second UE identity to the base station, the second UE being a D2D communication target of the first UE, i.e., the first UE is to establish D2D communication with the second UE. The second UE identity may be, for example, a temporary mobile subscriber identity (S-TMSI) or other identity of the second UE. Here, the first UE may send an RRC connection establishment request message to the base station, where the RRC connection establishment request message carries the second UE identity.
The steps 301-303 correspond to the steps 201-203 in fig. 2.
Step 304: the base station sends the D2D link configuration parameters and the RRC connection configuration parameters of the first UE and the second UE to the first UE in response to the second UE identification, and also sends the TA value and/or the transmission power value information of the second UE to the first UE. It is also possible that the first UE and the second UE share the TA value and/or the transmission power value, and at this time, the base station sends, to the first UE, the indication information that the second UE shares the TA value and/or the transmission power value with the first UE. Here, the base station may send an RRC connection setup message to the first UE, where the RRC connection setup message carries the D2D link configuration parameters and the RRC connection configuration parameters of the first UE and the second UE, and the TA value and/or the transmission power value information of the second UE, or the indication information that the second UE shares the TA value and/or the transmission power value with the first UE. It is also possible that the base station transmits the scheduling information of the information to the first UE by scrambling a Physical Downlink Control Channel (PDCCH) with the D2D-C-RNTI, so that the first UE descrambles the PDCCH with the D2D-C-RNTI to obtain the scheduling information, and further obtains the information according to the scheduling information. Likewise, in case of transmitting scheduling information using D2D-C-RNTI, the first UE needs to first acquire D2D-C-RNTI allocated by the base station. For a detailed description, reference may be made to the embodiment described above with reference to fig. 2, which is not described herein again.
Since many configurations of the first UE and the second UE are the same, the configuration information of the first UE and the second UE may use Delta configuration in order to save message resources. In the embodiment of the invention, Delta configuration means that the same configuration information only appears once, so that message resources can be saved.
Step 305: the first UE sends the D2D link configuration parameters and the RRC connection configuration parameters of the second UE and the TA value and/or the transmission power value information of the second UE to the second UE, or sends the D2D link configuration parameters and the RRC connection configuration parameters of the second UE and the shared TA value and/or the transmission power value to the second UE. Thus, the second UE receives the D2D link configuration parameters and RRC connection configuration parameters and TA values and/or transmit power values of the second UE transmitted by the first UE accordingly. Here, it is also possible that the first UE sends D2D cell radio network temporary identity D2D-C-RNTI to the second UE, where the D2D-C-RNTI is used for the second UE to obtain scheduling information of the second UE from the PDCCH, so that the second UE can descramble the PDCCH using the D2D-C-RNTI to obtain the scheduling information sent by the base station, and further obtain the above information of the second UE according to the scheduling information.
Step 306: the first UE establishes a D2D connection with the second UE and completes the RRC connection establishment with the base station based on the RRC connection configuration parameters of the first UE, and the second UE establishes a D2D connection with the first UE and completes the RRC connection establishment with the base station based on the RRC connection configuration parameters of the second UE. Since the first UE obtained its D2D link configuration parameters through step 304 and the second UE obtained its D2D link configuration parameters through step 305, the first UE and the second UE may establish a D2D connection with each other.
After the second UE completes the configuration, a Uu RRC connection setup complete (i.e., RRC connection between the second UE and the base station) and a Ud D2D link (i.e., D2D link between the first UE and the second UE) configuration complete message may be fed back to the first UE. And after receiving the RRC connection setup complete message and the D2D link configuration complete message fed back by the second UE, the first UE may send the RRC connection setup complete message and the D2D configuration complete message to the base station in a unified manner.
In this embodiment, the TA value and/or the transmission power value of the second UE may be a TA value and/or a transmission power value shared with the first UE. There are also a number of ways to determine whether a first UE shares a TA value and/or a transmit power value with a second UE. Reference may be made in this regard to the embodiment described above in connection with fig. 2, which is not described in further detail here.
The TA value updating process in this embodiment is the same as the embodiment shown in fig. 2, and is not described again.
In this embodiment, in the process of establishing the D2D communication between the first UE and the second UE, only the random access process needs to be performed between the first UE and the base station, and the second UE and the base station do not need to repeatedly perform the random access, thereby reducing the delay of establishing the D2D connection.
In the above embodiments, if the first UE has established a connection with the base station before initiating the D2D communication request with the second UE, that is, the first UE is currently in a connected state, the first UE only needs to send a D2D communication request message with the second UE to the base station, where the request message includes: an identity of the second UE, for example, an S-TMSI or a subscriber number, a TA value and/or a transmission power value shared by the first UE and the second UE, or indication information of the TA value and/or the transmission power value shared by the first UE and the second UE, or the request message includes: the identity of the second UE, e.g., S-TMSI or subscriber number, the path loss or distance between the first UE and the second UE.
If the second UE that the first UE requests to establish D2D communication has already established a connection with the base station, that is, the second UE is currently in a connected state, the base station may omit the step of paging the second UE, and the base station only needs to send a D2D connection establishment request to the second UE to inquire whether the second UE allows D2D communication with the first UE. Or the base station may determine whether to allow the first UE to perform D2D communication with the second UE and, if so, notify the second UE to establish D2D communication with the first UE.
The invention also provides corresponding embodiments of the user equipment, the base station and the communication system.
According to one embodiment of the invention, a first user equipment, UE, is provided. Fig. 4 shows a schematic block diagram of a first UE according to an embodiment of the present invention. As can be seen, the first UE 40 comprises: a first sending device 401, configured to send a preamble to a base station, and send a second UE identity to the base station, where the second UE is a D2D communication target of a first UE; a first receiving device 402, configured to receive a random access response message sent by the base station in response to the preamble, and configured to receive a D2D link configuration parameter and an RRC connection configuration parameter of the first UE, which are returned by the base station in response to the second UE identity; and a first connection establishing device 403, configured to establish a D2D connection with the second UE based on the D2D link configuration parameters of the first UE, and complete RRC connection establishment with a base station based on the RRC connection configuration parameters.
According to one embodiment, the first user equipment further comprises: a first sharing determination device 404, configured to detect a second UE to obtain a path loss or a distance between the first UE and the second UE, and determine whether the second UE can share a TA value and/or a transmission power value with the first UE according to the path loss or the distance; or the first sending apparatus 401 is configured to report the path loss or the distance for determining whether the second UE can share the TA value and/or the transmission power value with the first UE to the base station.
According to an embodiment, the first receiving apparatus 402 is further configured to receive an RRC connection setup message from the base station, where the RRC connection setup message carries the D2D link configuration parameters of the first UE returned by the base station in response to the second UE identity.
According to one embodiment, the RRC connection setup message further carries: D2D link configuration parameters of the second UE, and TA value and/or transmission power value information of the second UE; the first sending device 401 is further configured to send, to the second UE, the D2D link configuration parameter of the second UE, and the TA value and/or the transmission power value information of the second UE.
According to one embodiment, the RRC connection setup message further carries: D2D link configuration parameters of the second UE, and indication information that the second UE shares a TA value and/or a transmission power value with the first UE; the first sending device 401 is further configured to send, to the second UE, the D2D link configuration parameter of the second UE, and the shared TA value and/or the transmit power value.
According to one embodiment, the first user equipment further comprises: a first temporary identifier obtaining device 405, configured to obtain a D2D cell radio network temporary identifier D2D-C-RNTI allocated by a base station, where the D2D-C-RNTI is used for a first UE and a second UE to obtain scheduling information of the first UE and the second UE from a physical downlink control channel PDCCH; and the first receiving apparatus 402 is configured to use the D2D-C-RNTI to descramble the PDCCH, which is a physical downlink control channel, to obtain scheduling information of the D2D link configuration parameters of the first UE sent by the base station, and further obtain the D2D link configuration parameters of the first UE according to the scheduling information.
According to an embodiment of the present invention, a second user equipment, UE, is provided. Fig. 5 shows a schematic block diagram of a second UE according to an embodiment of the present invention. It can be seen that the second user equipment UE 50 comprises: a second receiving device 502, configured to receive a paging message from a base station from the base station, and obtain a D2D link configuration parameter of a second UE based on the paging message; second connection establishing means 503 for establishing a D2D connection with the first UE based on the D2D link configuration parameters of the second UE.
According to one embodiment, the second user equipment further comprises: a second temporary identifier obtaining device 505, configured to obtain a D2D cell radio network temporary identifier D2D-C-RNTI carried in the paging message, where the D2D-C-RNTI is used for the first UE and the second UE to obtain scheduling information of the first UE and the second UE from a physical downlink control channel PDCCH; and the second receiving apparatus 502 is configured to use the D2D-C-RNTI to descramble the PDCCH, which is a physical downlink control channel, to obtain scheduling information of the D2D link configuration parameters of the second UE sent by the base station, and further obtain the D2D link configuration parameters of the second UE according to the scheduling information.
According to an embodiment of the present invention, a second user equipment, UE, is provided. Fig. 6 shows a schematic block diagram of a second UE according to an embodiment of the present invention. As can be seen, the second user equipment UE 60 includes: third receiving means 602, configured to receive the D2D link configuration parameter and the RRC connection configuration parameter of the second UE forwarded by the first UE from the base station; third connection establishing means 603, configured to establish a D2D connection with the first UE based on the D2D link configuration parameters of the second UE, and complete RRC connection establishment with a base station based on the RRC connection configuration parameters.
According to an embodiment, the third receiving means 602 is further configured to obtain a timing advance TA value and/or a transmission power value of the second UE from the first UE.
According to one embodiment, the second user equipment UE further comprises: and a third temporary identifier obtaining device 605, configured to receive a D2D cell radio network temporary identifier D2D-C-RNTI from the first UE, where the D2D-C-RNTI is used for the first UE and the second UE to obtain scheduling information of the first UE and the second UE from a physical downlink control channel PDCCH.
According to one embodiment of the present invention, a base station is provided. Fig. 7 shows a schematic block diagram of a base station according to an embodiment of the present invention. As can be seen, the base station 70 includes: a fourth receiving means 702, configured to receive a preamble from the first UE, and configured to receive a second UE identity from the first UE; a fourth sending device 701, configured to send a random access response message to the first UE in response to the preamble, and send a D2D link configuration parameter of the first UE to the first UE based on the second UE identity, where the D2D link configuration parameter of the first UE is used for the connection between the first UE and the D2D of the second UE.
According to one embodiment, the fourth sending apparatus 701 further sends a paging message to the second UE, where the paging message is used to indicate the D2D link configuration parameters of the second UE.
According to one embodiment, the base station 70 further includes a scrambling device 703 for scrambling the physical downlink control channel PDCCH by the D2D cell radio network temporary identity D2D-C-RNTI to transmit scheduling information of the D2D link configuration parameters of the first UE and the second UE to the first UE and the second UE.
In addition, an embodiment of the present invention further provides a communication system, including the first user equipment, the second user equipment, and the base station.
In the embodiments of the system and the UE, the first UE is identical to the first UE in the corresponding method embodiment, and the second UE is identical to the second UE in the corresponding method embodiment, and technical implementation details in each module are the same as those in the corresponding method embodiment, and are not described again.
Those skilled in the art should understand that the device modules in the embodiments of the present invention are divided into functional partitions, and the actual specific structure may be a split or a merge of the above functional modules.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The embodiments of the present invention are also within the scope of the claims.
It will be understood by those skilled in the art that all or part of the processing in the method of the above embodiments may be implemented by hardware that is instructed to be associated with a program, and the program may be stored in a computer-readable storage medium.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (27)

1.一种设备到设备D2D终端的连接建立方法，其特征在于，包括：1. A method for establishing a device-to-device D2D terminal connection, comprising: 第一用户设备UE向基站发送前导码preamble；The first user equipment UE sends a preamble to the base station; 第一UE接收所述基站响应于所述preamble所发送的随机接入响应消息；receiving, by the first UE, a random access response message sent by the base station in response to the preamble; 第一UE向所述基站发送第二UE标识，所述第二UE是第一UE的D2D通信目标；The first UE sends a second UE identifier to the base station, and the second UE is a D2D communication target of the first UE; 第一UE接收基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数和RRC连接配置参数；The first UE receives the D2D link configuration parameters and the RRC connection configuration parameters of the first UE returned by the base station in response to the second UE identifier; 第一UE基于所述第一UE的D2D链路配置参数与所述第二UE建立D2D连接，并基于所述RRC连接配置参数完成与基站的RRC连接建立；The first UE establishes a D2D connection with the second UE based on the D2D link configuration parameters of the first UE, and completes the establishment of the RRC connection with the base station based on the RRC connection configuration parameters; 所述第一UE向所述基站发送所述第二UE标识包括：第一UE向所述基站发送RRC连接建立请求消息，所述RRC连接建立请求消息中携带所述第二UE标识；The first UE sending the second UE identifier to the base station includes: the first UE sending an RRC connection establishment request message to the base station, and the RRC connection establishment request message carries the second UE identifier; 所述方法还包括：The method also includes: 第一UE检测第二UE来获取第一UE与第二UE之间的路径损耗或距离；The first UE detects the second UE to obtain the path loss or distance between the first UE and the second UE; 第一UE根据所述路径损耗或距离确定第二UE能够与第一UE共享TA值和/或发射功率值；则所述RRC连接建立请求消息中还携带指示第一UE和第二UE共享时间提前量TA值和/或发射功率值的指示信息；或者According to the path loss or distance, the first UE determines that the second UE can share the TA value and/or transmit power value with the first UE; Indication information of the advance amount TA value and/or transmit power value; or 第一UE向基站报告用于确定第二UE是否能够与第一UE共享TA值和/或发射功率值的所述路径损耗或距离。The first UE reports the path loss or the distance for determining whether the second UE can share the TA value and/or the transmit power value with the first UE to the base station. 2.如权利要求1所述的方法，其特征在于，所述接收基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数包括：2. The method according to claim 1, wherein the D2D link configuration parameters of the first UE returned by the receiving base station in response to the second UE identity include: 接收来自基站的RRC连接建立消息，所述RRC连接建立消息中携带所述基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数。Receive an RRC connection establishment message from the base station, where the RRC connection establishment message carries the D2D link configuration parameters of the first UE returned by the base station in response to the second UE identifier. 3.如权利要求2所述的方法，其特征在于，所述RRC连接建立消息中还携带：第二UE的D2D链路配置参数、以及第二UE的TA值和/或发射功率值信息；3. The method according to claim 2, wherein the RRC connection establishment message further carries: D2D link configuration parameters of the second UE, and TA value and/or transmit power value information of the second UE; 所述方法还包括：The method also includes: 第一UE向第二UE发送第二UE的D2D链路配置参数、以及第二UE的TA值和/或发射功率值信息。The first UE sends the D2D link configuration parameters of the second UE, and the TA value and/or transmit power value information of the second UE to the second UE. 4.如权利要求3所述的方法，其特征在于，所述RRC连接建立消息中还携带：第二UE的D2D链路配置参数、以及第二UE与第一UE共享TA值和/或发射功率值的指示信息；4. The method according to claim 3, wherein the RRC connection establishment message further carries: the D2D link configuration parameters of the second UE, and the TA value shared by the second UE and the first UE and/or transmission Indication information of power value; 所述方法还包括：The method also includes: 第一UE向第二UE发送第二UE的D2D链路配置参数，以及共享的TA值和/或发射功率值。The first UE sends the D2D link configuration parameters of the second UE and the shared TA value and/or transmit power value to the second UE. 5.如权利要求1－4中任一项所述的方法，其特征在于，还包括：5. The method according to any one of claims 1-4, further comprising: 第一UE获取基站分配的D2D小区无线网络临时标识D2D-C-RNTI，所述D2D-C-RNTI用于第一UE和第二UE从物理下行控制信道PDCCH获取第一UE和第二UE的调度信息；The first UE obtains the D2D cell wireless network temporary identifier D2D-C-RNTI assigned by the base station, and the D2D-C-RNTI is used for the first UE and the second UE to obtain the first UE and the second UE from the physical downlink control channel PDCCH. scheduling information; 所述接收基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数包括：The D2D link configuration parameters of the first UE returned by the receiving base station in response to the second UE identity include: 第一UE利用所述D2D-C-RNTI解扰物理下行控制信道PDCCH获取基站发送的第一UE的D2D链路配置参数的调度信息，并进一步根据所述调度信息获取所述第一UE的D2D链路配置参数。The first UE uses the D2D-C-RNTI to descramble the physical downlink control channel PDCCH to obtain the scheduling information of the D2D link configuration parameters of the first UE sent by the base station, and further obtains the D2D link configuration parameters of the first UE according to the scheduling information. Link configuration parameters. 6.如权利要求5所述的方法，其特征在于，所述第一UE获取基站分配的D2D小区无线网络临时标识D2D-C-RNTI包括：所述第一UE获取携带在所述随机接入响应消息中的所述D2D-C-RNTI。6. The method according to claim 5, wherein the first UE acquiring the D2D cell radio network temporary identifier D2D-C-RNTI assigned by the base station comprises: the first UE acquiring the D2D-C-RNTI carried in the random access The D2D-C-RNTI in the response message. 7.一种设备到设备D2D终端的连接建立方法，其特征在于，包括：7. A method for establishing a device-to-device D2D terminal connection, comprising: 第二用户设备UE从基站接收来自基站的寻呼消息，并基于所述寻呼消息获取第二UE的D2D链路配置参数；The second user equipment UE receives a paging message from the base station from the base station, and acquires a D2D link configuration parameter of the second UE based on the paging message; 第二UE基于所述第二UE的D2D链路配置参数与第一UE建立D2D连接；The second UE establishes a D2D connection with the first UE based on the D2D link configuration parameters of the second UE; 所述寻呼消息还携带第二UE的TA值和/或发射功率值；或者The paging message also carries the TA value and/or transmit power value of the second UE; or 所述寻呼消息还指示第一UE和第二UE共享时间提前量TA值和/或发射功率值，则所述方法还包括：第二UE将与第一UE共享的TA值和/或发射功率值作为第二UE的TA值和/或发射功率值。The paging message also indicates that the first UE and the second UE share the TA value and/or transmit power value, then the method further includes: the second UE shares the TA value and/or transmit power value with the first UE The power value is used as the TA value and/or transmit power value of the second UE. 8.如权利要求7所述的方法，其特征在于，所述基于所述寻呼消息获取第二UE的D2D链路配置参数包括：8. The method according to claim 7, wherein the acquiring the D2D link configuration parameters of the second UE based on the paging message comprises: 获取寻呼消息携带的所述第二UE的D2D链路配置参数。Acquire the D2D link configuration parameters of the second UE carried in the paging message. 9.如权利要求7所述的方法，其特征在于，所述基于所述寻呼消息获取第二UE的D2D链路配置参数包括：9. The method according to claim 7, wherein the acquiring the D2D link configuration parameters of the second UE based on the paging message comprises: 获取寻呼消息携带的D2D小区无线网络临时标识D2D-C-RNTI，所述D2D-C-RNTI用于第一UE和第二UE从物理下行控制信道PDCCH获取第一UE和第二UE的调度信息；Obtain the D2D cell wireless network temporary identifier D2D-C-RNTI carried in the paging message, and the D2D-C-RNTI is used for the first UE and the second UE to obtain the scheduling of the first UE and the second UE from the physical downlink control channel PDCCH information; 利用所述D2D-C-RNTI解扰物理下行控制信道PDCCH获取基站发送的第二UE的D2D链路配置参数的调度信息，并进一步根据所述调度信息获取所述第二UE的D2D链路配置参数。Use the D2D-C-RNTI to descramble the physical downlink control channel PDCCH to obtain the scheduling information of the D2D link configuration parameters of the second UE sent by the base station, and further obtain the D2D link configuration of the second UE according to the scheduling information parameter. 10.一种设备到设备D2D终端的连接建立方法，其特征在于，包括：10. A method for establishing a device-to-device D2D terminal connection, comprising: 第二用户设备UE接收来自基站且由第一UE转发的第二UE的D2D链路配置参数和RRC连接配置参数；The second user equipment UE receives the D2D link configuration parameters and the RRC connection configuration parameters of the second UE from the base station and forwarded by the first UE; 第二UE基于所述第二UE的D2D链路配置参数与所述第一UE建立D2D连接，并基于所述RRC连接配置参数完成与基站的RRC连接建立；The second UE establishes a D2D connection with the first UE based on the D2D link configuration parameters of the second UE, and completes the establishment of the RRC connection with the base station based on the RRC connection configuration parameters; 所述方法还包括：第二UE从第一UE获取第二UE的时间提前量TA值和/或发射功率值。The method further includes: the second UE acquires a timing advance TA value and/or a transmission power value of the second UE from the first UE. 11.如权利要求10所述的方法，其特征在于，还包括：11. The method of claim 10, further comprising: 第二UE从第一UE接收D2D小区无线网络临时标识D2D-C-RNTI,所述D2D-C-RNTI用于第一UE和第二UE从物理下行控制信道PDCCH获取第一UE和第二UE的调度信息。The second UE receives the D2D cell radio network temporary identifier D2D-C-RNTI from the first UE, and the D2D-C-RNTI is used for the first UE and the second UE to obtain the first UE and the second UE from the physical downlink control channel PDCCH scheduling information. 12.一种设备到设备D2D终端的连接建立方法，其特征在于，包括：12. A method for establishing a device-to-device D2D terminal connection, comprising: 从第一UE接收前导码preamble；receiving a preamble preamble from the first UE; 响应于所述preamble向第一UE发送随机接入响应消息；sending a random access response message to the first UE in response to the preamble; 从第一用户设备UE接收第二UE标识；receiving a second UE identity from the first user equipment UE; 基于所述第二UE标识向第一UE发送第一UE的D2D链路配置参数，所述第一UE的D2D链路配置参数用于所述第一UE与所述第二UE的D2D连接；Sending the D2D link configuration parameters of the first UE to the first UE based on the second UE identifier, where the D2D link configuration parameters of the first UE are used for the D2D connection between the first UE and the second UE; 所述从第一UE接收第二UE标识包括：The receiving the second UE identity from the first UE includes: 从第一UE接收RRC连接建立请求消息，所述RRC连接建立请求消息中携带所述第二UE标识；receiving an RRC connection establishment request message from the first UE, the RRC connection establishment request message carrying the second UE identifier; 所述RRC连接建立请求消息中还携带第一UE和第二UE之间的路径损耗或距离，或者指示第一UE和第二UE共享时间提前量TA值和/或发射功率值的指示信息。The RRC connection establishment request message also carries path loss or distance between the first UE and the second UE, or indication information indicating that the first UE and the second UE share a timing advance TA value and/or a transmission power value. 13.如权利要求12所述的方法，其特征在于，向第一UE发送第一UE的D2D链路配置参数包括：13. The method according to claim 12, wherein sending the D2D link configuration parameters of the first UE to the first UE comprises: 向第一UE发送RRC连接建立消息，所述RRC连接建立消息中携带所述第一UE的D2D链路配置参数。Sending an RRC connection establishment message to the first UE, where the RRC connection establishment message carries the D2D link configuration parameters of the first UE. 14.如权利要求12或13所述的方法，其特征在于，还包括：14. The method of claim 12 or 13, further comprising: 向第二UE发送寻呼消息，所述寻呼消息用于指示第二UE的D2D链路配置参数。Sending a paging message to the second UE, where the paging message is used to indicate the D2D link configuration parameters of the second UE. 15.如权利要求14所述的方法，其特征在于，所述寻呼消息携带有所述第二UE的D2D链路配置参数、以及第二UE的TA值和/或发射功率值。15. The method according to claim 14, wherein the paging message carries the D2D link configuration parameters of the second UE, and the TA value and/or transmit power value of the second UE. 16.如权利要求14所述的方法，其特征在于，所述寻呼消息还指示第一UE和第二UE共享时间提前量TA值和/或发射功率值。16. The method according to claim 14, wherein the paging message further instructs the first UE and the second UE to share the TA value and/or transmit power value. 17.如权利要求12所述的方法，其特征在于，所述向第一UE发送第一UE的D2D链路配置参数包括：通过D2D小区无线网络临时标识D2D-C-RNTI加扰物理下行控制信道PDCCH向第一UE和第二UE发送第一UE和第二UE的D2D链路配置参数的调度信息。17. The method according to claim 12, wherein the sending the D2D link configuration parameters of the first UE to the first UE comprises: scrambling the physical downlink control with the D2D-C-RNTI temporary identifier of the wireless network of the D2D cell The channel PDCCH sends the scheduling information of the D2D link configuration parameters of the first UE and the second UE to the first UE and the second UE. 18.一种第一用户设备UE，其特征在于，包括：18. A first user equipment UE, characterized by comprising: 第一发送装置，用于向基站发送前导码preamble，以及用于向所述基站发送第二UE标识，所述第二UE是第一UE的D2D通信目标；A first sending device, configured to send a preamble to a base station, and to send a second UE identifier to the base station, where the second UE is a D2D communication target of the first UE; 第一接收装置，用于接收所述基站响应于preamble所发送的随机接入响应消息，以及用于接收基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数和RRC连接配置参数；以及A first receiving device, configured to receive the random access response message sent by the base station in response to the preamble, and to receive the D2D link configuration parameters and RRC of the first UE returned by the base station in response to the second UE identifier connection configuration parameters; and 第一连接建立装置，用于基于所述第一UE的D2D链路配置参数与所述第二UE建立D2D连接，并基于所述RRC连接配置参数完成与基站的RRC连接建立；A first connection establishing device, configured to establish a D2D connection with the second UE based on the D2D link configuration parameters of the first UE, and complete the establishment of an RRC connection with the base station based on the RRC connection configuration parameters; 所述第一接收装置进一步用于：The first receiving device is further used for: 接收来自基站的RRC连接建立消息，所述RRC连接建立消息中携带所述基站响应于所述第二UE标识所返回的第一UE的D2D链路配置参数；receiving an RRC connection establishment message from the base station, where the RRC connection establishment message carries the D2D link configuration parameters of the first UE returned by the base station in response to the second UE identifier; 所述装置还包括：The device also includes: 第一共享确定装置，用于检测第二UE来获取第一UE与第二UE之间的路径损耗或距离，以及根据所述路径损耗或距离确定第二UE是否能够与第一UE共享TA值和/或发射功率值；或者The first sharing determining means is configured to detect the second UE to obtain the path loss or distance between the first UE and the second UE, and determine whether the second UE can share the TA value with the first UE according to the path loss or distance and/or transmit power values; or 所述第一发送装置用于向基站报告用于确定第二UE是否能够与第一UE共享TA值和/或发射功率值的所述路径损耗或距离。The first sending means is configured to report the path loss or the distance used for determining whether the second UE can share the TA value and/or the transmit power value with the first UE to the base station. 19.如权利要求18所述的第一用户设备，其特征在于，所述RRC连接建立消息中还携带：第二UE的D2D链路配置参数、以及第二UE的TA值和/或发射功率值信息；19. The first user equipment according to claim 18, wherein the RRC connection establishment message further carries: D2D link configuration parameters of the second UE, and TA value and/or transmit power of the second UE value information; 所述第一发送装置还用于向第二UE发送第二UE的D2D链路配置参数、以及第二UE的TA值和/或发射功率值信息。The first sending means is further configured to send the second UE's D2D link configuration parameters, and the second UE's TA value and/or transmit power value information to the second UE. 20.如权利要求18所述的第一用户设备，其特征在于，所述RRC连接建立消息中还携带：第二UE的D2D链路配置参数、以及第二UE与第一UE共享TA值和/或发射功率值的指示信息；20. The first user equipment according to claim 18, wherein the RRC connection establishment message further carries: the D2D link configuration parameters of the second UE, and the TA value shared by the second UE and the first UE. /or indication information of the transmit power value; 所述第一发送装置还用于向第二UE发送第二UE的D2D链路配置参数，以及共享的TA值和/或发射功率值。The first sending means is further configured to send the D2D link configuration parameters of the second UE, and the shared TA value and/or transmit power value to the second UE. 21.如权利要求18或19所述的第一用户设备，其特征在于，还包括：21. The first user equipment according to claim 18 or 19, further comprising: 第一临时标识获取装置，用于获取基站分配的D2D小区无线网络临时标识D2D-C-RNTI，所述D2D-C-RNTI用于第一UE和第二UE从物理下行控制信道PDCCH获取第一UE和第二UE的调度信息；并且The first temporary identifier obtaining means is used to obtain the D2D cell radio network temporary identifier D2D-C-RNTI assigned by the base station, and the D2D-C-RNTI is used for the first UE and the second UE to obtain the first temporary identifier from the physical downlink control channel PDCCH. scheduling information for the UE and the second UE; and 所述第一接收装置用于利用所述D2D-C-RNTI解扰物理下行控制信道PDCCH获取基站发送的第一UE的D2D链路配置参数的调度信息，并进一步根据所述调度信息获取所述第一UE的D2D链路配置参数。The first receiving device is configured to use the D2D-C-RNTI to descramble the physical downlink control channel PDCCH to obtain the scheduling information of the D2D link configuration parameters of the first UE sent by the base station, and further obtain the scheduling information according to the scheduling information. D2D link configuration parameters of the first UE. 22.一种第二用户设备UE，其特征在于，包括：22. A second user equipment UE, characterized by comprising: 第二接收装置，用于从基站接收来自基站的寻呼消息，并基于所述寻呼消息获取第二UE的D2D链路配置参数；The second receiving device is configured to receive a paging message from the base station from the base station, and obtain a D2D link configuration parameter of the second UE based on the paging message; 第二连接建立装置，用于基于所述第二UE的D2D链路配置参数与第一UE建立D2D连接；a second connection establishing device, configured to establish a D2D connection with the first UE based on the D2D link configuration parameters of the second UE; 其中，in, 所述寻呼消息还携带第二UE的TA值和/或发射功率值；或者The paging message also carries the TA value and/or transmit power value of the second UE; or 若所述寻呼消息还指示第一UE和第二UE共享时间提前量TA值和/或发射功率值，则将与第一UE共享的TA值和/或发射功率值作为第二UE的TA值和/或发射功率值。If the paging message also indicates that the first UE and the second UE share the timing advance TA value and/or transmit power value, then use the TA value and/or transmit power value shared with the first UE as the TA of the second UE value and/or transmit power value. 23.如权利要求22所述的第二用户设备，其特征在于，还包括：23. The second user equipment according to claim 22, further comprising: 第二临时标识获取装置，用于获取寻呼消息携带的D2D小区无线网络临时标识D2D-C-RNTI，所述D2D-C-RNTI用于第一UE和第二UE从物理下行控制信道PDCCH获取第一UE和第二UE的调度信息；并且The second temporary identifier obtaining means is used to obtain the D2D cell radio network temporary identifier D2D-C-RNTI carried in the paging message, and the D2D-C-RNTI is used for the first UE and the second UE to obtain from the physical downlink control channel PDCCH scheduling information for the first UE and the second UE; and 所述第二接收装置用于利用所述D2D-C-RNTI解扰物理下行控制信道PDCCH获取基站发送的第二UE的D2D链路配置参数的调度信息，并进一步根据所述调度信息获取所述第二UE的D2D链路配置参数。The second receiving device is configured to use the D2D-C-RNTI to descramble the physical downlink control channel PDCCH to obtain the scheduling information of the D2D link configuration parameters of the second UE sent by the base station, and further obtain the scheduling information according to the scheduling information. D2D link configuration parameters of the second UE. 24.一种第二用户设备，其特征在于，包括：24. A second user equipment, characterized by comprising: 第三接收装置，用于接收来自基站且由第一UE转发的第二UE的D2D链路配置参数和RRC连接配置参数；The third receiving means is used to receive the D2D link configuration parameter and the RRC connection configuration parameter of the second UE from the base station and forwarded by the first UE; 第三连接建立装置，用于基于所述第二UE的D2D链路配置参数与所述第一UE建立D2D连接，并基于所述RRC连接配置参数完成与基站的RRC连接建立；A third connection establishment device, configured to establish a D2D connection with the first UE based on the D2D link configuration parameters of the second UE, and complete the RRC connection establishment with the base station based on the RRC connection configuration parameters; 所述第三接收装置还用于从第一UE获取第二UE的时间提前量TA值和/或发射功率值。The third receiving means is further configured to obtain a timing advance TA value and/or a transmit power value of the second UE from the first UE. 25.如权利要求24所述的第二用户设备，其特征在于，还包括：25. The second user equipment according to claim 24, further comprising: 第三临时标识获取装置，用于从第一UE接收D2D小区无线网络临时标识D2D-C-RNTI,所述D2D-C-RNTI用于第一UE和第二UE从物理下行控制信道PDCCH获取第一UE和第二UE的调度信息。The third temporary identifier obtaining means is used to receive the D2D cell wireless network temporary identifier D2D-C-RNTI from the first UE, and the D2D-C-RNTI is used for the first UE and the second UE to obtain the second UE from the physical downlink control channel PDCCH Scheduling information of a UE and a second UE. 26.一种基站，其特征在于，包括：26. A base station, comprising: 第四接收装置，用于从第一UE接收前导码preamble，以及用于从第一用户设备UE接收第二UE标识；The fourth receiving means is used for receiving the preamble from the first UE, and for receiving the second UE identity from the first user equipment UE; 第四发送装置，用于响应于所述preamble向第一UE发送随机接入响应消息，以及用于基于所述第二UE标识向第一UE发送第一UE的D2D链路配置参数，所述第一UE的D2D链路配置参数用于所述第一UE与所述第二UE的D2D连接；A fourth sending means, configured to send a random access response message to the first UE in response to the preamble, and send a D2D link configuration parameter of the first UE to the first UE based on the second UE identifier, the The D2D link configuration parameters of the first UE are used for the D2D connection between the first UE and the second UE; 所述第四发送装置还向第二UE发送寻呼消息，所述寻呼消息用于指示第二UE的D2D链路配置参数；The fourth sending means further sends a paging message to the second UE, where the paging message is used to indicate the D2D link configuration parameters of the second UE; 其中，in, 所述从第一UE接收第二UE标识包括：The receiving the second UE identity from the first UE includes: 从第一UE接收RRC连接建立请求消息，所述RRC连接建立请求消息中携带所述第二UE标识；receiving an RRC connection establishment request message from the first UE, the RRC connection establishment request message carrying the second UE identifier; 所述RRC连接建立请求消息中还携带第一UE和第二UE之间的路径损耗或距离，或者指示第一UE和第二UE共享时间提前量TA值和/或发射功率值的指示信息。The RRC connection establishment request message also carries path loss or distance between the first UE and the second UE, or indication information indicating that the first UE and the second UE share a timing advance TA value and/or a transmission power value. 27.如权利要求26所述的基站，还包括加扰装置，用于通过D2D小区无线网络临时标识D2D-C-RNTI加扰物理下行控制信道PDCCH向第一UE和第二UE发送第一UE和第二UE的D2D链路配置参数的调度信息。27. The base station according to claim 26, further comprising a scrambling device for sending the first UE to the first UE and the second UE by scrambling the physical downlink control channel (PDCCH) through the D2D cell wireless network temporary identifier D2D-C-RNTI and scheduling information of the D2D link configuration parameters of the second UE.
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Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen

Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd.

CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040

Patentee after: Honor Terminal Co.,Ltd.

Country or region after: China

Address before: 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong

Patentee before: Honor Device Co.,Ltd.

Country or region before: China