WO2015085839A1

WO2015085839A1 - Data communication method, system and device

Info

Publication number: WO2015085839A1
Application number: PCT/CN2014/090052
Authority: WO
Inventors: 陈拓; 杨敬
Original assignee: 华为技术有限公司
Priority date: 2013-12-13
Filing date: 2014-10-31
Publication date: 2015-06-18
Also published as: CN104717757B; CN104717757A

Abstract

The present invention relates to the technical field of communications. Disclosed in an embodiment of the present invention are a data communication method, system and device. A first base station covering a serving cell of a user equipment determines for the UE the resource scheduling information used for data communication in the serving cell, and sends the resource scheduling information to a second base station, the second base station being a base station in a cooperative cell of the UE, so that the second base station prohibits other UEs from occupying resources corresponding to the resource scheduling information; when receiving information of scheduling not allowed returned by the second base station, the first station will send uplink authorization to the UE to allow the UE to perform data communication over the resource corresponding to the above resource scheduling information in the serving cell, thus avoiding conflict of resource occupation by UEs between base stations, achieving interference coordination between base stations, and preventing interference of the data communication of UEs in a cooperative cell to the data communication of UEs in a cell.

Description

Data communication method, system and device

This application claims priority to Chinese Patent Application No. 201310687268.2, entitled "A Data Communication Method, System and Apparatus", filed on Dec. 13, 2013, the entire contents of In the application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data communication method, system, and apparatus.

Background technique

Data communication can include various types, such as human communication and machine communication. The human communication is a base station and the like. The related device completes the communication process according to the active request of the user equipment, and the Machine Type Communication (MTC) service realizes that no human intervention is required. In the data communication process, the requirements of the MTC service for the wireless communication network are quite different from the traditional human communication modes, and these differences are mainly reflected in the specific service requirements. MTC business needs mainly include: data services as the main, small packet data transmission, but the number of small packets is large.

Compared with the 2G/3G network, the MTC service adopts the Long Term Evolution (LTE) technology, and can flexibly adjust the occupied time-frequency resources according to the MTC data packet size, has high-efficiency transmission performance, and has low terminal energy consumption. The advantages of MTC services in LTE networks must be based on reliable transmission performance, which requires solving some key issues: interference problems with data transmission between cells.

Summary of the invention

Embodiments of the present invention provide a data communication method, system, and apparatus, which implement interference coordination between cells.

A first aspect of the embodiments of the present invention provides a data communication method, including:

Determining, by the first base station, resource scheduling information that the user equipment performs data communication in the serving cell, where the first base station is a base station where the serving cell of the user equipment is located;

The first base station sends the resource scheduling information to the second base station, so that the second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information, and the second base station is a coordinated cell of the user equipment. The base station where it is located;

The first base station receives the information about the scheduling that is returned by the second base station, and sends an uplink grant to the user equipment, so that the user equipment adjusts the resource in the serving cell. The degree information corresponds to the resource for data communication.

In a first possible implementation manner of the first aspect, the method further includes:

The first base station receives information that is not allowed to be scheduled returned by the second base station, and determines other resource scheduling information for performing data communication for the user equipment.

With reference to the first aspect of the embodiments of the present invention, or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect of the embodiments, the base station determines that the user equipment performs data communication in the serving cell. Before the resource scheduling information, it also includes:

The first base station sends physical broadcast channel information in the serving cell, and includes, in the physical broadcast channel information, an index number of multiple preamble sequence groups, where each preamble sequence in the same preamble sequence group corresponds to the same Resource scheduling information;

Receiving, by the first base station, a random access request sent by the user equipment, where the random access request includes an index number of a preamble sequence group determined by the user equipment according to the physical broadcast channel information;

The determining the resource scheduling information of the data communication by the user equipment, the method includes: determining, by the random access request, an index number of the preamble sequence group determined by the user equipment, and determining, by using the index number, the user equipment Resource scheduling information for data communication.

With reference to the first aspect of the embodiments of the present invention, or the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect of the embodiments, the method further includes:

The first base station detects, on the time-frequency resource specified by the resource scheduling information, uplink data of the user equipment for performing data communication;

Receiving uplink data of the user equipment on the detected frequency domain resource.

With reference to the third possible implementation manner of the first aspect of the embodiments of the present invention, in a fourth possible implementation manner of the first aspect of the embodiments, the time base frequency resource specified by the first base station in the resource scheduling information Before detecting the uplink data of the user equipment for data communication, the method further includes:

The first base station performs preamble sequence detection on the resources of all physical random access channels PRACH, and obtains an index number of the preamble sequence group selected by the user equipment;

After performing the detecting step of the preamble sequence, after the preset time, the first base station performs the step of detecting and receiving uplink data of the user equipment according to the determined resource scheduling information.

A second aspect of the embodiments of the present invention provides a data communication method, including:

The user equipment receives the physical broadcast channel information that is sent by the first base station in the serving cell, where the physical broadcast channel information includes an index number of the multiple preamble sequence groups, where each preamble sequence in the same preamble sequence group corresponds to the same resource. Scheduling information, the first base station is a base station where the serving cell of the user equipment is located;

The user equipment selects a preamble sequence of one of the plurality of preamble sequence groups;

The user equipment sends a random access request to the first base station, where the random access request includes an index number of a preamble sequence group in which the preamble sequence selected by the user equipment is located;

The user equipment receives an uplink grant sent by the first base station, where the uplink grant is that the second base station prohibits other user equipment from occupying resource corresponding to the resource scheduling information indicated by the index number of the selected preamble sequence group, and returns After the scheduling information is allowed, the uplink grant is sent by the first base station, and the second base station is a base station where the coordinated cell of the user equipment is located;

The user equipment performs data communication on the resource scheduling information corresponding resource indicated by the preamble sequence group where the selected preamble sequence is located.

In a possible implementation manner of the second aspect of the embodiment of the present invention, the user equipment selects a preamble sequence of the one of the plurality of preamble sequence groups, and specifically includes:

Determining resource information occupied by uplink data;

And selecting, according to the determined resource information, a correspondence between an index number of the preset preamble sequence group and the resource scheduling information, and selecting a preamble sequence group corresponding to the determined resource information;

A leader sequence is selected among the selected set of leader sequences.

A third aspect of the embodiments of the present invention provides a data communication method, including:

Receiving, by the second base station, resource scheduling information that is sent by the user equipment that is sent by the user equipment in the serving cell to the user equipment, where the second base station is located; the second base station is a base station where the coordinated cell of the user equipment is located;

The second base station prohibits the other user equipment from occupying the resource corresponding to the resource scheduling information, and sends the information that is allowed to be scheduled to the first base station, so that the first base station notifies the user equipment in the serving cell. The resource scheduling information is used for data communication on the corresponding resource.

In a possible implementation manner of the third aspect of the embodiments of the present invention, the method further includes:

And if the resource scheduling information corresponding resource is occupied by another user equipment, returning information that is not allowed to be scheduled to the first base station, so that the first base station determines, for the user equipment, other resource scheduling information for performing data communication.

A fourth aspect of the embodiments of the present invention provides a data communication apparatus, including:

a scheduling information determining unit, configured to determine resource scheduling information that the user equipment performs data communication in the serving cell;

a scheduling information sending unit, configured to send the resource scheduling information determined by the scheduling information determining unit to the second base station, so that the second base station prohibits other user equipment from occupying resources corresponding to the resource scheduling information, where the second base station a base station where the coordinated cell of the user equipment is located;

And an authorization sending unit, configured to receive the information about the scheduling that is returned by the second base station, and send an uplink authorization to the user equipment, so that the user equipment performs data communication on the resource corresponding to the resource scheduling information in the serving cell. .

In a first possible implementation manner of the fourth aspect of the embodiments of the present disclosure, the scheduling information determining unit is further configured to: receive information that is not allowed to be scheduled by the second base station, and determine data communication for the user equipment. Other resource scheduling information.

With reference to the fourth aspect of the embodiments of the present invention, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect of the embodiments, the apparatus further includes:

a broadcast information sending unit, configured to send physical broadcast channel information in the serving cell, and include, in the physical broadcast channel information, an index number of a plurality of preamble sequence groups, where each preamble sequence in the same preamble sequence group Corresponding to the same resource scheduling information;

An access request receiving unit, configured to receive a random access request sent by the user equipment, where the random access request includes an index number of a preamble sequence group determined by the user equipment according to the physical broadcast channel information;

And the scheduling information determining unit is configured to: after the random access request received by the access request receiving unit, parse the index number of the preamble sequence group determined by the user equipment, and determine that the user equipment performs data communication. Resource scheduling information.

With reference to the fourth aspect of the embodiments of the present invention, or the first possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect of the embodiments, the apparatus further includes:

The uplink detection receiving unit is configured to detect uplink data of the user equipment for data communication on the time-frequency resource corresponding to the resource scheduling information, and receive uplink data of the user equipment on the detected time-frequency resource.

With reference to the embodiment of the present invention or the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect of the embodiments, the device further includes:

a sequence detecting unit, configured to perform resources on all physical random access channels PRACH The preamble sequence detects the index number of the preamble sequence group selected by the user equipment;

The scheduling information determining unit is specifically configured to determine the resource scheduling information according to an index number of the preamble sequence group acquired by the sequence detecting unit;

The uplink detection receiving unit is configured to perform the step of performing the detecting and receiving uplink data of the user equipment according to the determined resource scheduling information after the sequence detecting unit detects the sequence index.

A fifth aspect of the embodiments of the present invention provides a data communication apparatus, including:

a broadcast information receiving unit, configured to receive physical broadcast channel information that is sent by the first base station of the user equipment in the serving cell, where the physical broadcast channel information includes an index number of the plurality of preamble sequence groups, wherein the same preamble sequence group Each preamble sequence corresponds to the same resource scheduling information;

a sequence selection unit, configured to select a preamble sequence of one of the plurality of preamble sequence groups included in the physical broadcast channel information received by the broadcast information receiving unit;

An access requesting unit, configured to send a random access request to the first base station, where the random access request includes an index number of a preamble sequence group in which the preamble sequence selected by the sequence selection unit is located;

An authorization receiving unit, configured to receive an uplink grant sent by the first base station, where the uplink grant is a resource corresponding to the resource scheduling information indicated by the second base station in prohibiting other user equipment from occupying the index number of the selected preamble sequence group, And returning the uplink grant sent by the first base station after returning the information that is allowed to be scheduled; the second base station is a base station where the coordinated cell of the user equipment is located;

And a communication unit, configured to perform data communication on the resource scheduling information corresponding resource indicated by the preamble sequence group selected by the sequence selection unit.

In a possible implementation manner of the fifth aspect of the embodiment of the present invention, the sequence selecting unit specifically includes:

a resource determining unit, configured to determine resource information occupied by the uplink data;

a selecting unit, configured to select a preamble sequence group corresponding to the determined resource information according to the resource information determined by the resource determining unit, and the correspondence between the index number of the preset preamble sequence group and the resource scheduling information; A leader sequence is selected from the selected leader sequence group.

A sixth aspect of the embodiments of the present invention provides a data communication apparatus, including:

a scheduling information receiving unit, configured to receive resource scheduling information that is sent by the user equipment in the serving cell to perform data communication by the first base station where the serving cell of the user equipment is located;

a scheduling permission unit, configured to prohibit other user equipments from occupying the resource scheduling information corresponding resources, and sending the information that allows the scheduling to the first base station, so that the first base station notifies the user equipment of the resource scheduling information Data communication is performed on the corresponding resource.

In a possible implementation manner of the sixth aspect of the embodiments of the present invention, the device further includes: a scheduling prohibiting unit, configured to return to the first base station if the resource scheduling information corresponding resource has been occupied by another user equipment The scheduled information is allowed to be such that the first base station determines other resource scheduling information for data communication for the user equipment.

A seventh aspect of the embodiments of the present invention provides a data communication system, including: a first base station where a serving cell of a user equipment is located, and a second base station where the coordinated cell of the user equipment is located;

The first base station is the data communication device according to the fourth aspect of the embodiments of the present invention, or the first possible implementation manner of the fourth aspect to any implementation manner of the fourth possible implementation manner;

The second base station is the data communication apparatus described in a possible implementation manner of the sixth aspect or the sixth aspect of the embodiment of the present invention.

An eighth aspect of the present invention provides a data communication system, including a first base station where a serving cell of a user equipment is located, a base station management unit, and a second base station where the coordinated cell of the user equipment is located;

The second base station is the data communication device described in a possible implementation manner of the sixth aspect or the sixth aspect of the embodiment of the present invention;

The base station management unit is configured to connect communications between the first base station and the second base station.

In the data communication method of the embodiment, the first base station where the serving cell of the user equipment is located determines resource scheduling information for data communication for the user equipment, and sends the resource scheduling information to the second base station, where the second base station The base station where the coordinated cell of the user equipment is located, so that the second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information; and receiving the information of the scheduling that is returned by the second base station, the first base station sends an uplink grant to the user equipment. The user equipment is allowed to perform data communication on the resource corresponding to the resource scheduling information. In this way, by negotiating the resource scheduling information between the second cell base station and the first cell base station, the collision of the user equipment on the resource occupation between the base stations can be avoided, and the interference coordination of each cell is realized, thereby avoiding the cooperation of the user equipment of the coordinated cell. The interference of data communication to the data communication of the user equipment of the cell.

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 embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1a and 1b are schematic structural diagrams of a data communication system according to an embodiment of a method of the present invention;

1c is a flowchart of a data communication method according to Embodiment 1 of the present invention;

2 is a flowchart of another data communication method according to Embodiment 1 of the method of the present invention;

3 is a flowchart of another data communication method according to Embodiment 1 of the method of the present invention;

4 is a flowchart of a data communication method according to Embodiment 2 of the method of the present invention;

5 is a flowchart of a data communication method according to Embodiment 3 of the method of the present invention;

6 is a flowchart of a data communication method according to Embodiment 4 of the method of the present invention;

7 is a flowchart of a data communication method according to Embodiment 5 of the method of the present invention;

8 is a flowchart of a data communication method according to Embodiment 6 of the method of the present invention;

9 is a flowchart of a data communication method according to Embodiment 7 of the method of the present invention;

10 is a schematic structural diagram of a data communication apparatus according to Embodiment 1 of the apparatus of the present invention;

11 is a schematic structural diagram of another data communication apparatus according to Embodiment 1 of the apparatus of the present invention;

12 is a schematic structural diagram of another data communication apparatus according to Embodiment 1 of the apparatus of the present invention;

13 is a schematic structural diagram of a data communication apparatus according to Embodiment 2 of the apparatus of the present invention;

FIG. 14 is a schematic structural diagram of a data communication apparatus according to Embodiment 3 of the apparatus of the present invention; FIG.

14b is a schematic structural diagram of another data communication apparatus according to Embodiment 3 of the apparatus of the present invention;

FIG. 15 is a schematic structural diagram of a data communication apparatus according to Embodiment 5 of the apparatus of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1 of the method of the present invention

Providing a data communication method, mainly a communication method of a user equipment, such as a communication method of a user equipment supporting machine communication, applied to a data communication system as shown in FIG. 1a or 1b, in the system shown in FIG. 1a The first base station, the base station management unit, and the second base station, where the user equipment is located in the serving cell, where the second base station is a base station where the at least one coordinated cell of the user equipment is located, where the base station management unit can manage the first base station and each The information of the second base station, such as resource scheduling information, can connect the communication between the first base station and the second base station. And the base station management unit acts as a device independent of each base station.

The system shown in FIG. 1b includes a first base station where the user equipment serving cell is located and a second base station where the coordinated cell of the user equipment is located, where the base station management unit may be included in the first base station or the second base station (in FIG. 1b The first base station includes a base station management unit, and the function of the base station management unit is similar to that of the base station management unit in FIG. 1a described above, except that in this case, the base station management unit acts as a unit in a certain base station.

Each user equipment has a base station where the serving cell is located, and a second base station of different coordinated cells, where the second base station and the first base station are not necessarily geographically adjacent, but the second base station and the second base station are A base station can share the communication channel resources, and the first base station can receive the uplink transmission data of the strong user equipment, and the user equipment can receive the downlink transmission data of the second base station and the first base station.

The embodiment is a method performed by the first base station where the serving cell of the user equipment is located, and the flowchart is as shown in FIG. 1c, and includes:

Step 101: Determine resource scheduling information for performing data communication by the user equipment serving cell.

It can be understood that the base station can first configure physical broadcast channel (PBCH) information for the data service (such as the MTC service) of the current cell, and the PBCH information can include related information of random access of the user equipment, such as power control information and timing. Synchronization information, etc.; when the user equipment completes synchronization with the cell of the first base station, when the PBCH information of the first base station is monitored, the user equipment may initiate a random access and send the uplink data. After the user equipment initiates the request for the random access, if the first base station agrees to the user equipment access, and the user equipment initiates the resource scheduling request, the first base station coordinates the resource scheduling of the user equipment, specifically, Steps 101 to 103 in this embodiment perform coordination.

In this embodiment, the first base station may consider various factors, such as the actual data service of the user equipment and the current occupation status of the resource, and the resource scheduling information for the user equipment, where the resource scheduling information is used. It may include information of time-frequency resources and/or frequency domain resources, and the like.

Step 102: The resource scheduling information determined in step 101 is sent to the second base station, so that the second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information.

The second base station receives the resource scheduling information sent by the first base station, and the second base station checks whether the resource scheduling information corresponding resource is occupied, and if not occupied, prohibits allocating the resource scheduling to other user equipments in the coverage of the second base station. The information corresponding to the information, and returning the information that is allowed to be scheduled to the first base station; if it is already occupied, the information that is allowed to be scheduled may be returned to the first base station when the resource is released, or may not be returned directly to the current base station. Scheduling information, such that the first base station receives the information that is not allowed to be scheduled returned by the second base station, determines other resource scheduling information for performing data communication for the user equipment, and then performs resource scheduling coordination according to the step 102 until the first The resources allocated by the base station are not occupied by the user equipment covered by the second base station, and the second base station returns information that allows scheduling to the first base station.

Step 103: When receiving the information about the scheduling that is returned by the second base station, send an uplink grant to the user equipment, so that the user equipment performs data communication on the resource scheduling information corresponding resource in the serving cell.

It should be noted that, after the resource scheduling information corresponding resource is released by the user equipment, the first base station may further send the information that the resource release is successful to the second base station, so that the second base station may prohibit other user equipments from occupying the resource scheduling information. Corresponding resources. When the first base station performs communication with the second base station, such as transmitting resource scheduling information and receiving information that allows scheduling, communication by the base station management unit is required.

It can be seen that, in the method of this embodiment, the first base station where the user equipment serving cell is located determines resource scheduling information for data communication in the serving cell for the user equipment, and sends the resource scheduling information to the second base station, where The second base station is a base station where the coordinated cell of the user equipment is located, so that the second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information; and receiving the information of the scheduled scheduling returned by the second base station, the first base station sends an uplink grant to the second base station. The user equipment allows the user equipment to perform data communication on the resource scheduling information corresponding resource in the serving cell. In this way, the negotiation between the second base station and the first base station for the resource scheduling information can avoid the conflict of resource allocation between the user equipments of the respective base stations, and realize the interference coordination of the cells, thereby avoiding the data communication of the user equipment of the coordinated cell. Interference with data communication of user equipment in the cell.

Referring to FIG. 2, in a specific embodiment, the first base station can perform the above steps. Before steps 101 to 103, before step 101, the following

steps

104 and 105 may also be performed, specifically:

Step 104: Send physical broadcast channel information in the serving cell, and include, in the physical broadcast channel information, a plurality of preamble sequence groups available in the current cell, such as an index number of a physical random access channel (PRACH) preamble sequence group.

In this embodiment, the random access channel preamble sequence is grouped, and each of the packets may include multiple random preamble sequences, and the resource scheduling information corresponding to each preamble sequence in the same packet is the same.

When the first base station sends the physical broadcast channel information, in order to make the information transmitted by the first base station less, the index number of the preamble sequence group may be associated with the resource scheduling information in an implicit manner, and the index number is used as the preamble sequence group. The identification information of the resource scheduling information is carried in the physical broadcast channel information, that is, the resource scheduling information corresponding to each preamble sequence group is identified by a fixed information of several bits, so that the identification information can be transmitted by transmitting the identification information in subsequent communications. The resource scheduling information, rather than directly transmitting the actual resource scheduling information, reduces the number of bits transmitted between the first base station and the user equipment. Specifically, the first base station sends the index number of the plurality of preamble sequence groups to the physical broadcast channel information, where the index number is used to indicate resource scheduling information of the user equipment of the corresponding preamble sequence group.

After the first base station sends the physical broadcast channel information, the user equipment receives the physical broadcast channel information, and then selects one of the plurality of available preamble sequence groups indicated by the physical broadcast channel information, and the user equipment may specifically Determining resource information such as the size of the data to be transmitted and the time-frequency resource to be occupied according to the actual data service (such as the MTC service), and selecting an appropriate preamble sequence group among the available preamble sequence groups according to the determined resource information; A preamble sequence may be randomly selected in the selected preamble sequence group, and a random access request is initiated to the first base station, and the random access request may include an index number corresponding to the randomly selected preamble sequence group. The user equipment may preset the corresponding relationship between the index number of each preamble sequence group and the resource scheduling information on the user equipment side, and after determining the resource information according to the actual data service, the user equipment may associate the resource information with the preset. The resource scheduling information is compared, the resource scheduling information consistent with the resource information is determined, and then the index number corresponding to the resource information is determined, and then according to the determined index number, which preamble sequence group is associated, the preamble sequence group is A suitable set of preamble sequences selected by the user equipment based on the determined resource information.

Step 105: Receive a random access request sent by the user equipment, where the random access request includes an index number of the preamble sequence group determined by the user equipment according to the physical broadcast channel information. Because at first The base station side is also preset with the correspondence between the index number of the preamble sequence group and the resource scheduling information. When the determining step in the foregoing step 101 is performed, the first base station may specifically parse the preamble determined by the user equipment from the random access request. The index number of the sequence group determines the resource scheduling information of the user equipment for data communication.

It can be understood that the preamble sequence used by the user equipment to initiate the random access request is mainly used to distinguish the user equipment identity on the base station side, and complete the transmission delay estimation and correction of the user equipment. If the user equipment wants to initiate uplink transmission, it needs to perform downlink synchronization to obtain some necessary cell-level information. However, the user equipment does not correct the transmission delay in the downlink synchronization. After the user equipment initiates a random access request, the first base station performs detection according to the detection. The obtained preamble sequence determines the user equipment that is allowed to perform uplink data transmission, and informs the user equipment of the uplink and downlink total delay information, so that the user equipment performs correction according to the delay information, thereby achieving time synchronization with the first base station. The meaning of time synchronization between the user equipment and the first base station is that if the first base station notifies the user equipment to send data and receives uplink data in the designated time slot, the user equipment needs to adjust its data transmission time so that the data actually arrives at the first base station. The time slot coincides with the specified time slot.

It should be noted that

steps

104 and 105 in this embodiment may be combined with the coordination of resource scheduling in the foregoing steps 101 to 103 to form a separate embodiment to reduce the amount of data communicated between the user equipment and the first base station. After the execution of the first base station, the first base station can know, according to the index number included in the random access request, which resources the uplink data of the user equipment is on.

Referring to FIG. 3, in another specific embodiment, in order to simplify the process of the user equipment from random access to sending uplink data, the user equipment may be actively requested to perform resource scheduling and resource scheduling request of the first base station to the user equipment. Steps of processing, specifically, the first base station performs the above step 104 and the following step 106 before the step 101, and after performing the

steps

104 and 106, after the preset time, the step of performing blind detection,

step

107, and 108, specifically:

Step 106: Perform preamble detection on the resources of all the physical random access channels, and obtain an index number of the preamble sequence group where the preamble sequence selected by the user equipment is located, when the first base station performs the foregoing step 101, The resource scheduling information is determined according to the index number of the detected preamble sequence group.

Step 107: Detect uplink data of the user equipment for data communication on the time-frequency resource corresponding to the resource scheduling information.

Step 108: Receive uplink data of the user equipment on the detected time-frequency resource.

It can be understood that only the user equipment sends the resource scheduling information indicated by the index number. The uplink data may occupy the largest frequency domain resource block, but does not specify which part of the entire resource is occupied by the uplink data. The blind detection process of the

above steps

107 and 108 is to traverse all possible time-frequency resource blocks, and try to demodulate each resource block. If the demodulation result is correct, the uplink data of the user equipment and the actual occupied time are acquired. The frequency resource, if the correct demodulation result cannot be obtained after traversing all the resource blocks, the blind detection fails.

In addition, it should be noted that the foregoing preset time may be greater than or equal to the time for the first base station and the second base station to perform resource scheduling coordination according to the foregoing steps 101 to 103, so that the first base station and the second base station may be sufficient. The time negotiation user equipment can perform uplink data transmission according to the determined resource scheduling information, and then perform blind detection of the uplink data to ensure that the first base station can detect the uplink data of the user equipment. In this embodiment, after performing step 104, the first base station may perform step 101 to 103 without responding to the user after detecting the index number of the preamble sequence group where the preamble sequence selected by the user equipment is located on all possible PARCH resources. A random access request initiated by the device, which can save the interaction process between the first base station and the user equipment.

Further, in this embodiment, the user equipment may not need to actively request resource scheduling, but the first base station directly sends the index numbers of various available preamble sequence groups, and associates the index numbers with the resource scheduling information to allow The user equipment determines the resource scheduling information by itself; and because the base station detects the uplink data of the user equipment directly on all possible resources according to the obtained resource scheduling information, the user equipment does not need to send the buffer status report to the first base station. (Buffer State Report, BSR), to inform the first base station user equipment of the size and location of the uplink data sent by the user equipment. Thereby, the process of the user equipment from randomly accessing the first base station to transmitting the uplink data is simplified.

In addition, it should be noted that

steps

104, 105, and 107 and 108 in this embodiment may be combined with the coordination of resource scheduling in steps 101 to 103 described above to form a separate embodiment to reduce the relationship between the user equipment and the first base station. The communication process is such that after the execution of the first base station, the first base station can know the resources of the uplink data of the user equipment according to the index number included in the random access request, and perform the above steps after the preset time. Blind check in 107 and 108.

Steps

107 and 108 in this embodiment may also be combined with the coordination of resource scheduling in the foregoing steps 101 to 103 to form a separate embodiment to reduce the communication flow between the user equipment and the first base station. Specifically, after allocating resource scheduling information for the user equipment, the first base station may start performing blind detection after performing a certain preset time, that is, performing

steps

107 and 108.

Embodiment 2 of the method of the present invention

A data communication method, which is mainly a communication method for a user equipment supporting data communication, can be applied to the data communication system shown in FIG. 1a and FIG. 1b. The embodiment is the user described in the first embodiment of the foregoing method. The method performed by the device, the flow chart shown in Figure 4, includes:

Step 201: Receive physical broadcast channel information that is sent by the first base station where the user equipment is located in the serving cell of the user equipment, and include, in the physical broadcast channel information, an index number of multiple preamble sequence groups available in the current cell, where the index number is used. And indicating resource scheduling information of the user equipment corresponding to the preamble sequence group, and each preamble sequence in the same preamble sequence group corresponds to the same resource scheduling information.

Step 202: Select a preamble sequence in a preamble sequence group among the plurality of preamble sequence groups carried in the physical broadcast channel information. Specifically, the user equipment may first determine the size of the uplink data to be transmitted according to the actual data service (such as the MTC service). And resource information such as occupied time-frequency resources, and selecting an appropriate preamble sequence group among the available preamble sequence groups according to the determined resource information, and then the user equipment randomly selects a preamble sequence within the preamble sequence group to initiate random connection. Into the request.

The user equipment is used as the MTC terminal, and the location of the originating service is relatively fixed. The mapping between the index number of each preamble sequence group and the resource scheduling information in the serving cell may be preset on the user equipment side, and the user equipment is based on the actual data service. After the resource information is determined, the preamble sequence group corresponding to the determined resource information may be selected according to the preset correspondence.

Step 203: Send a random access request to the first base station, where the random access request includes an index number of the preamble sequence group where the preamble sequence selected by the user equipment in step 202 is located.

It can be understood that, when the first base station sends the physical broadcast channel information, the index number of each preamble sequence group, such as the PRACH preamble sequence group, may be associated with the resource scheduling information in an implicit manner to identify the resource scheduling information, and the index number is used. It is carried in the physical broadcast channel information to reduce the number of bits of communication between the subsequent first base station and the user equipment. The user equipment may select one of the preamble sequence groups, and randomly select one of the preamble sequences in the selected preamble sequence to initiate a random access request, and carry the index number of the preamble sequence group in which the preamble sequence selected by the user equipment is located in the random connection. The incoming request is sent to the first base station.

In this way, the first base station may perform the resource scheduling negotiation with the second base station according to steps 101 to 103 in the first embodiment of the foregoing method, and details are not described herein. The first base station is based on the index number carried in the random access request, and the pair of the preset index sequence and the resource scheduling information. It should be known that the resource scheduling information of the user equipment is known.

Step 204: Receive an uplink grant sent by the first base station, where the uplink grant is an uplink grant sent by the first base station after the second base station prohibits the other user equipment from occupying the resource corresponding to the resource scheduling information and returns the information that is allowed to be scheduled.

Step 205: Perform data communication on the resource scheduling information corresponding to the index number of the preamble sequence group where the preamble sequence selected in step 202 is located.

It should be noted that, if the second base station returns information that is not allowed to be scheduled to the first base station, the first base station may notify the user equipment that the resource scheduling information determined in step 202 is not allowed to be used for data communication, so that the user equipment may re-select another A process of a sequence of preambles and a random access request is initiated, such that the user equipment receives the uplink grant sent by the first base station after the user equipment initiates the random access request. In addition, after the user equipment uses the resource scheduling information corresponding resource and releases the information, the user equipment may send the information that the resource release is successful to the first base station, so that the first base station notifies the second base station that the other user equipment may be prohibited from occupying the resource.

In the method of this embodiment, the user equipment receives the physical broadcast channel information that is sent by the first base station, and selects a preamble sequence in a certain preamble sequence in each of the preamble sequence groups carried in the physical broadcast channel information. And transmitting, by the random access request, the index number of the selected preamble sequence group to the first base station, so that the resource scheduling of the first base station and the second base station are coordinated, so that the second base station prohibits other user equipment from occupying the index. The resource corresponding to the resource scheduling information indicated by the number, the same resource scheduling information corresponding to each preamble sequence in the same preamble sequence group; and the user equipment receiving the uplink grant sent by the first base station, according to the resource scheduling information indicated by the index number Perform uplink data transmission. In this way, the negotiation between the second base station and the first base station for the resource scheduling information can avoid the conflict of resource occupation of the user equipment between the base stations, and realize the interference coordination of each cell, thereby avoiding the data communication of the user equipment of the coordinated cell. Interference with data communication of user equipment in the cell. And the user equipment can obtain the resource scheduling information by using the information carried in the physical broadcast channel information sent by the first base station in the process of the random access, which can save the process of the user equipment to initiate the resource scheduling after the random access. , simplifying the data communication process.

Embodiment 3 of the method of the present invention

A data communication method is also provided, which is mainly applied to a data communication system as shown in FIGS. 1a and 1b, and is a communication method of a user equipment for performing data communication. This embodiment is implemented by the above method. The method performed by the second base station where the coordinated cell of the user equipment is located in the first embodiment is as shown in FIG. 5, and includes:

Step 301: Receive resource scheduling information for performing data communication by a user equipment that is sent by the first base station where the user equipment is located in the serving cell.

Step 302: The other user equipment is prohibited from occupying the resource corresponding to the resource scheduling information, and the information about the scheduling is sent to the first base station, so that the first base station notifies the user equipment to perform data communication on the resource corresponding to the resource scheduling information, specifically, A base station sends an uplink grant to the user equipment.

It is to be understood that, after the user equipment initiates the random access request, the first base station may send the resource scheduling information of the user equipment to the second base station according to the method in the foregoing method, where the second base station performs resource scheduling coordination, specifically, If the resource scheduling information corresponding resource has been occupied by another user equipment, the second base station sends the information that is allowed to be invoked to the first base station after the resource is released, or the second base station directly returns to the first base station that the scheduling is not allowed. Information, such that the first base station determines other resource scheduling information for data communication for the user equipment, and then coordinates with the second base station for other resource scheduling information, such that the operation is repeated until an unoccupied resource is found; if the resource is scheduled If the information corresponding resource is not occupied, the second base station prohibits other user equipment from occupying the resource.

In the method of this embodiment, the first base station where the user equipment is located sends the resource scheduling information of the user equipment for data communication to the second base station, so that the second base station prohibits other user equipments from occupying the resource scheduling information. The first base station sends an uplink grant to the user equipment, and allows the user equipment to perform data communication on the resource corresponding to the resource scheduling information. In this way, the negotiation between the second base station and the first base station for the resource scheduling information can avoid the conflict of resource occupation of the user equipment between the base stations, and realize the interference coordination of each cell, thereby avoiding the data communication of the user equipment of the coordinated cell. Interference with data communication of user equipment in the cell.

The data communication method of the present invention is described below with reference to the fourth embodiment. The data communication method of the present invention is mainly described by a machine communication method, where the first base station is the base station where the serving cell of the user equipment is located, and the second base station is the base station where the coordinated cell of the user equipment is located. .

Referring to FIG. 6, the data communication method provided in Embodiment 4 of the method of the present invention includes:

Step 401: The user equipment completes cell synchronization and PBCH information monitoring of the first base station, and Obtain random access related information in the PBCH information.

Step 402: The user equipment initiates a random access request (denoted as msg1), the first base station performs PRACH detection, and sends a random access response (denoted as msg2) to the user equipment, and includes an index number of the preamble sequence in the random access response. The information such as the timing synchronization information, the first Physical Uplink Shared Channel (PUSCH) resource scheduling information, and the Cell Radio Network Temporary Identifier (C-RNTI).

The first base station may detect multiple preamble sequences when performing PRACH detection, and need to select some of the preamble sequences to allow random access, and others do not allow random access. The first base station sends the index number of the selected preamble sequence to all user equipments in the cell of the first base station, and the user equipment compares the index number of the received preamble sequence with the preamble sequence index number sent by itself, if they are consistent Indicates that the first step of random access is successful. Otherwise, the random access request is rejected, and random access needs to be re-initiated.

Step 403: The user equipment receives the random access response of the first base station, performs timing adjustment, and initiates transmission of the first PUSCH data (recorded as msg3), and includes the identifier (Identity, ID) specified by the user equipment in the first PUSCH data, and starts. Competition elimination timer.

Step 404: The first base station acquires the identifier specified by the user equipment according to the msg3, and determines whether the identified user equipment is a user equipment of the MTC type. If yes, the contention conflict is resolved, and a contention resolution message is sent, indicating that the user equipment that allows the identifier is connected. Incoming information; if not, access is performed according to the process of random access of ordinary user equipment.

Step 405: The user equipment receives the first base station contention resolution message, and if the parsed ID is consistent with the ID carried by the user equipment when transmitting the msg3, the scheduling request (Schedule Request, SR) is initiated; the first base station receives the SR of the user equipment. The channel quality indicator (CQI) measurement and the SR scheduling are performed, and the uplink grant (UL Grant) is sent to the user equipment after the success.

Step 406: After receiving the UL Grant, the user equipment sends a buffer status report (BSR) to the first base station, and tells the first base station the size and location of the uplink data sent by the user equipment, and waits for the first base station to allow the data transmission indication. After receiving the BSR sent by the user equipment, the first base station determines the resource scheduling information required by the user equipment, and sends the resource scheduling information of the MTC to the second base station.

Step 407: After the second base station receives the resource scheduling information of the MTC, if the resource scheduling information corresponding resource is not occupied by other user equipments, the other user equipments are prohibited from occupying the resource scheduling information corresponding resources, and returning the allowed scheduling to the first base station. information. If the resource scheduling information corresponds to If the resource is successfully released, the second base station may allow other user equipments to occupy the resource. Specifically, the second base station may prohibit sending the UL Grant to the user equipment that is currently requesting the resource scheduling.

Step 408: The first base station receives the information about the scheduled scheduling of the second base station, and sends an uplink grant to the user equipment to notify the user equipment to start uplink data transmission.

After the user equipment transmits the data and releases the resource, the first base station may send the information that the resource release is successful to the second base station, so that the coordinated cell may allocate resources corresponding to the resource scheduling information to other user equipments.

It should be noted that, when the resource scheduling is coordinated between the first base station and the second base station, information may be directly performed, or a scheduling device may be set between the first base station and the second base station to forward the first base station and the first base station. Communication information between the two base stations.

Referring to FIG. 7, the data communication method provided in Embodiment 5 of the method of the present invention includes:

In step 501, the first base station configures the PBCH information according to the MTC service of the current cell, and includes the index number of the plurality of PRACH preamble sequence groups in the PBCH information, where the index number is a fixed information of several bits, indicating the user equipment of the corresponding PRACH preamble sequence group. The resource scheduling information may further include random access related information, such as power control information and retransmission information, in the PBCH information.

Step 502: After receiving and parsing the PBCH information, the user equipment selects one PRACH preamble sequence group from the plurality of preamble sequence groups according to factors such as the MTC service, and randomly selects the preamble sequence in the selected PRACH preamble sequence group, and selects the selected The index number of the preamble sequence group in which the preamble sequence is located is carried in the random access request (denoted as msg1) and sent to the current cell base station.

Step 503: After receiving the random access request, the first base station obtains the resource scheduling information of the user equipment according to the index number of the preamble sequence group carried in the first base station, and allocates the specified time-frequency resource to the user equipment, and provides the user equipment to the user equipment. The device returns a random access response (denoted as msg2).

Step 504: The user equipment receives the random access response of the first base station, performs timing adjustment, and initiates a first PUSCH data transmission (denoted as msg3). The first base station receives the first PUSCH data, and determines whether the user equipment is It is an MTC user equipment. If yes, it resolves the contention conflict and sends a contention resolution message, indicating information that the user equipment of the identifier is allowed to access; if not, accessing according to the random access procedure of the ordinary user equipment.

Step 505: The user equipment receives the first base station contention resolution message, and if the parsed ID is consistent with the ID carried by the user equipment when sending the msg3, the SR is initiated.

Step 506: After obtaining the resource scheduling information of the user equipment in the foregoing step 503, the first base station may start to perform resource scheduling coordination according to steps 506 and 507. Specifically, the first base The station sends the resource scheduling information of the MTC to the second base station.

Step 507: After receiving the resource scheduling information of the MTC, the second base station, if the resource scheduling information corresponding resource is not occupied by other user equipments, prohibits scheduling the resource scheduling information corresponding resources for other user equipments, and returns the allowed scheduling to the first base station. Information. If the resource scheduling information corresponding to the resource release is successful, the second base station may schedule the resource for other user equipments. Specifically, the second base station may prohibit sending the UL Grant to the user equipment that is currently requesting the resource scheduling.

Step 508: If the first base station receives the SR sent by the user equipment in the foregoing step 505, and receives the information about the scheduling that is returned by the second base station, the first base station sends an uplink grant to the user equipment to notify the user equipment to start uplink data transmission.

In this embodiment, the index number of the PRACH preamble sequence is associated with the resource scheduling information in an implicit manner, which can reduce the number of bits of communication between the first base station and the user equipment in the process of resource scheduling, and improve performance; In an embodiment, the resource scheduling information of the user equipment may be determined according to the index of the preamble sequence, and the resource required by the user equipment needs to be scheduled by the first base station according to information such as CQI and BSR, which simplifies the process.

Further, in a specific embodiment, after the user equipment sends the SR in the foregoing step 505, the user equipment may detect the physical downlink control channel (PDCCH) sent by the first base station on the specified time-frequency resource. The PDCCH information may include information that the first base station schedules for the user equipment, such as the number of uplink scheduling resources, the modulation and coding scheme, and the power control control parameters, and the user equipment obtains the information by using a blind detection manner.

Referring to FIG. 8, the data communication method provided in Embodiment 6 of the method of the present invention includes:

Step 601: The user equipment can complete downlink synchronization and parsing PBCH information according to step 401.

Step 602: The user equipment and the first base station complete the random access procedure according to the foregoing steps 402 to 404, and initiate an uplink SR.

Step 603: After receiving the SR, the first base station acquires the resource scheduling information of the MTC by the user equipment, and performs resource scheduling coordination with the second base station, and receives the information of the allowed scheduling returned by the second base station, where the first base station An uplink grant is sent to the user equipment, and the user equipment is allowed to perform uplink transmission on the time-frequency resource specified by the resource scheduling information.

Step 604: After receiving the uplink authorization, the user equipment performs PUSCH data transmission on the specified time-frequency resource according to its own service requirement.

Step 605: The first base station traverses all possible time-frequency resources, such as a physical resource block (PRB) and a transport block, to detect uplink data of the user equipment.

In this embodiment, after the user equipment initiates the scheduling request, after the first base station performs resource scheduling coordination and allows the user equipment to transmit data on the resource specified by the resource scheduling information, the user equipment may be used on all possible resources. The uplink data is blindly detected without using the user equipment to send a buffer status report to tell the first base station how much the uplink data of the user equipment is sent. This can save the number of transmission information bits between the user equipment and the first base station.

Referring to FIG. 9, the data communication method provided in Embodiment 7 of the method of the present invention includes:

In step 701, the user equipment completes the cell synchronization and the parsing of the PBCH information, and obtains information such as an index number, a time-frequency resource configuration, a power control configuration, and a retransmission configuration corresponding to each preamble group of the random access. The index number may indicate resource scheduling information of the user equipment corresponding to the preamble sequence group.

Step 702: The user equipment selects any preamble sequence in a preamble sequence group to initiate a random access request, and preempts the specified time-frequency resource according to the resource scheduling information indicated by the index number of the preamble sequence to perform uplink data transmission.

Step 703: The first base station performs preamble sequence detection at all possible PRACH time-frequency resources, and obtains an index number of the preamble sequence group where the preamble sequence selected by the user equipment is located, thereby obtaining resource scheduling information of the user equipment. If the user equipment is an MTC user equipment, the resource scheduling may be coordinated with the second base station according to steps 506 to 507 above.

Step 704: After performing the preamble sequence detection, the first base station starts to perform blind detection on the uplink data of the user equipment on all possible resources after the preset time ΔT, and if the uplink data is correctly received, the acknowledgement is acknowledged (Acknowledgement, ACK) To the user equipment; if the uplink data is not correctly received, a Negative Acknowledgement (NACK) is fed back to the user equipment to indicate that the user equipment performs retransmission.

In this embodiment, after performing the detection of the preamble sequence and obtaining the resource scheduling information of the user equipment, the first base station starts the coordination of the resource scheduling and detects the uplink data of the user equipment, thereby saving the user equipment to initiate the scheduling request and the buffer status. The process of reporting and the like further simplifies the communication process.

Embodiment 1 of the device of the present invention

A data communication device is also provided, that is, the first base where the serving cell of the user equipment is located Station, the structure diagram shown in 10, including:

The scheduling information determining unit 10 is configured to determine resource scheduling information that the user equipment performs data communication in the serving cell.

The scheduling information sending unit 11 is configured to send the resource scheduling information determined by the scheduling information determining unit 10 to the second base station, so that the second base station prohibits other user equipments from occupying the resource scheduling information corresponding resources, where The second base station is a base station where the coordinated cell of the user equipment is located;

The authorization sending unit 12 is configured to receive the information about the scheduling that is returned by the second base station, and send an uplink authorization to the user equipment, so that the user equipment performs data on the resource corresponding to the resource scheduling information in the serving cell. Communication.

In a specific embodiment, the scheduling information sending unit 11 in this embodiment is further configured to: after the resource scheduling information corresponding resource is released by the user equipment, send the information that the resource release succeeds to the second base station, so that the second base station It is possible to prohibit other user equipments from occupying resources corresponding to the resource scheduling information.

It can be seen that, in the data communication device of this embodiment, the scheduling information determining unit 10 determines the resource scheduling information for performing data communication for the user equipment, and the scheduling information sending unit 11 sends the resource scheduling information to the second base station, so that The second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information; and receiving the information that is not allowed to be scheduled by the second base station, the authorization sending unit 12 sends an uplink grant to the user equipment, and allows the user equipment to correspond to the resource scheduling information. Data communication on resources. In this way, the negotiation between the second base station and the data communication device for the resource scheduling information can avoid the resource occupation conflict of each user equipment between the base stations, and realize the interference coordination of each cell, thereby avoiding the data of the user equipment of the coordinated cell. The interference of communication to the data communication of the user equipment of the cell.

Referring to FIG. 11, in a specific embodiment, the data communication apparatus may include, in addition to the structure shown in FIG. 10, a broadcast information transmitting unit 13 and an access request receiving unit 14, wherein:

The broadcast information transmitting unit 13 is configured to send physical broadcast channel information in the serving cell, and include, in the physical broadcast channel information, an index number of the plurality of preamble sequence groups, where each preamble sequence in the same preamble sequence group corresponds to The same resource scheduling information.

The access request receiving unit 14 is configured to receive a random access request sent by the user equipment, where the random access request includes the user equipment sending according to the broadcast information sending unit 13 The index number of the leader sequence group determined by the physical broadcast channel information.

In the data communication device of this embodiment, after the broadcast information transmitting unit 13 transmits the physical broadcast channel information, when the access request receiving unit 14 receives the random access request, the scheduling information determining unit 10 may receive the access request receiving unit from the access request receiving unit. The index number of the preamble sequence group determined by the user equipment is obtained by the received random access request, and the resource scheduling information of the user equipment for data communication is determined. Then, the scheduling information sending unit 11 sends the determined resource scheduling information to the second base station. When receiving the information of the scheduling that is returned by the second base station, the authorization sending unit 12 sends an uplink grant to the user equipment; when receiving the second base station, If the scheduled information is not allowed, the scheduling information determining unit 10 determines other resource scheduling information for performing data communication for the user equipment.

It should be noted that, in another specific embodiment, the data communication apparatus may not include the foregoing scheduling information determining unit 10, the scheduling information sending unit 11, and the authorization transmitting unit 12, but need to include the above-mentioned broadcast information transmitting unit 13 And the access request receiving unit 14, so that it can know which resources the user equipment transmits uplink data, and can reduce the amount of data for communication between the user equipment and the first base station.

Referring to FIG. 12, in another specific embodiment, the data communication apparatus may include a broadcast information transmitting unit 13, a sequence detecting unit 15, and an uplink detecting receiving unit 16, in addition to the structure shown in FIG. among them:

The sequence detecting unit 15 is configured to perform preamble sequence detection on the resources of all the physical random access channels PRACH, and obtain an index number of the preamble sequence group selected by the user equipment;

The uplink detection receiving unit 16 is configured to detect uplink data of the user equipment for data communication on the time-frequency resource corresponding to the resource scheduling information, and receive uplink data of the user equipment on the detected time-frequency resource.

In this embodiment, after the broadcast information transmitting unit 13 transmits the physical broadcast channel information, the sequence detecting unit 15 may perform preamble sequence detection on all possible PRACH resources, and when the sequence detecting unit 15 detects the user equipment selection. The index number of the preamble sequence group, the scheduling information determining unit 10 determines the resource scheduling information according to the index number of the preamble sequence group acquired by the sequence detecting unit 15; after the sequence detecting unit 15 detects the preamble sequence index After the preset time, the uplink detection receiving unit 16 may perform the step of detecting and receiving the uplink data according to the determined resource scheduling information.

It should be noted that, in another specific embodiment, the scheduling information determining unit 10, the scheduling information sending unit 11, and the authorization sending unit 12 may not be included in the data communication apparatus. In addition, it is necessary to include the above-mentioned broadcast information sending unit 13, the sequence detecting unit 15 and the uplink detecting and receiving unit 16, so that it is possible to know on which resources the user equipment sends uplink data and perform blind detection, without waiting for the user equipment to report the specific occupation. The resource information can reduce the amount of data communicated between the user equipment and the data communication device, and can reduce the flow of data communication.

In other specific embodiments, the data communication apparatus may not include the foregoing scheduling information determining unit 10, the scheduling information transmitting unit 11, and the authorization transmitting unit 12, but need to include the above-described uplink detecting receiving unit 16, such that when the data communication apparatus After the resource scheduling information is allocated to the user equipment, it can be known that the user equipment sends uplink data on the resources and performs blind detection, instead of waiting for the user equipment to report the specific resource information, which can reduce the data communication process.

Embodiment 2 of the device of the present invention

A data communication device is also provided, that is, the first base station where the serving cell of the user equipment is located, and the structural diagram is as shown in FIG. 13, including: a memory 20, a processor 21, an input device 23, and an output device 24 respectively connected to the bus. ,among them:

The memory 20 is used to store data input from the input device 23, and may also store information such as necessary files for processing the data by the processor 21; the input device 23 and the output device 24 are ports for the data communication device to communicate with other devices, and may also include Devices external to the data communication device such as a display, a keyboard, a mouse, and a printer.

The processor 21 is configured to determine resource scheduling information that the user equipment performs data communication in the serving cell, and control the output device 24 to send the determined resource scheduling information to the second base station, so that the second base station prohibits other user equipments. The resource corresponding to the resource scheduling information is occupied, the second base station is a base station where the coordinated cell of the user equipment is located; and when the input device 23 receives the information of the allowed scheduling returned by the second base station, the processor 21 controls the output device 24 Sending an uplink grant to the user equipment, so that the user equipment performs data communication on a resource corresponding to resource scheduling information in the serving cell. Further, after the resource scheduling information corresponding resource is released by the user equipment, the processor 21 is further configured to control the output device 24 to send the information that the resource release is successful to the second base station, so that the second base station can allocate the information to the other user equipment. The resource corresponding to the resource scheduling information. In this way, the negotiation between the second base station and the data communication device for the resource scheduling information can avoid the collision of the resource occupation of each user equipment between the base stations, and realize the interference coordination of each cell, thereby avoiding the cooperation of the user equipment of the coordinated cell. The interference of data communication to the data communication of the own cell.

In a specific embodiment, the processor 21 in the data communication device is further configured to: before outputting the resource scheduling information of the user equipment, control the output device 24 to send the physical broadcast channel information, including the physical broadcast channel information. An index number of the preamble sequence group, wherein each of the preamble sequences in the same preamble sequence group corresponds to the same resource scheduling information; when the input device 23 receives the random access request, the random access request includes the user The index number of the preamble sequence group determined by the device according to the physical broadcast channel information sent by the data communication device; the processor 21 parses the index number of the preamble sequence group determined by the user equipment from the received random access request Determining, by the user equipment, resource scheduling information for data communication. The processor 21 then controls the output device 24 to transmit the determined resource scheduling information to the second base station. When the input device 23 receives the information of the allowed scheduling returned by the second base station, the control output device 24 sends an uplink grant to the user equipment; The device 23 receives the second base station returning information that is not allowed to be scheduled, and the processor 21 determines other resource scheduling information for performing data communication for the user equipment.

In another specific embodiment, the processor 21 is configured to control the output device 24 to perform preamble detection on the resources of all physical random access channels PRACH after the physical broadcast channel information is sent in the serving cell. The processor 21 is specifically configured to determine the resource scheduling information according to the obtained index number of the preamble sequence group; after the sequence detecting unit detects the sequence index, After the preset time, the processor 21 may perform the step of detecting and receiving the uplink data according to the determined resource scheduling information, that is, detecting the uplink data of the user equipment for data communication on the time-frequency resource corresponding to the resource scheduling information. Receiving uplink data of the user equipment on the detected time-frequency resource.

Embodiment 3 of the device of the present invention

A data communication device, that is, the above-mentioned user equipment, can support data services, such as MTC communication. The schematic diagram of the structure is as shown in FIG. 14a, and includes:

The broadcast information receiving unit 30 is configured to receive physical broadcast channel information that is sent by the first base station in the serving cell, where the physical broadcast channel information includes an index number of the plurality of preamble sequence groups, where each of the same preamble sequence group The preamble sequence corresponds to the same resource scheduling information. The first base station is a base station where the serving cell of the user equipment is located.

The sequence selection unit 31 is configured to select a preamble sequence of one preamble sequence group among the plurality of preamble sequence groups included in the physical broadcast channel information received by the broadcast information receiving unit 30.

The access requesting unit 32 is configured to send a random access request to the first base station, where the random The access request includes an index number of a preamble sequence group in which the preamble sequence selected by the sequence selection unit 31 is located;

The authorization receiving unit 33 is configured to receive an uplink grant sent by the current base station, where the uplink grant is that the second base station prohibits other user equipment from occupying resource corresponding to the resource scheduling information indicated by the index number of the selected preamble sequence group, and The uplink grant sent by the first base station after the information that is allowed to be scheduled is returned. The second base station is a base station where the coordinated cell of the user equipment is located.

The communication unit 34 is configured to perform data communication on the resource scheduling information corresponding resource indicated by the preamble sequence group where the preamble sequence selected by the sequence selection unit 31 is located.

In a specific embodiment, the structure is as shown in FIG. 14b, and the sequence selection unit 31 is specifically implemented by the resource determining unit 310 and the selecting unit 311, wherein the resource determining unit 310 is configured to determine the uplink data occupation. The resource information; the selecting unit 311 is configured to: according to the resource information determined by the resource determining unit 310, and the corresponding relationship between the index number of the preset preamble sequence group and the resource scheduling information, the physical broadcast channel received by the broadcast information receiving unit 30. In the plurality of preamble sequence groups in the information, the preamble sequence group corresponding to the determined resource information is selected; and one preamble sequence is selected in the selected preamble sequence group.

In the data communication apparatus of this embodiment, when the broadcast information receiving unit 30 receives the physical broadcast channel information that the first base station is located, the resource determining unit 31 is in each of the preamble sequence groups carried in the physical broadcast channel information. Selecting a preamble sequence in a certain preamble sequence, and sending, by the access requesting unit 32, the index number of the selected preamble sequence group to the first base station by using a random access request, so that resources are performed between the first base station and the second base station. Coordination of scheduling, so that the second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information indicated by the index number; when the authorization receiving unit 33 receives the uplink authorization sent by the first base station, the communication unit 34 follows the index number. The indicated resource scheduling information is used for uplink data transmission. In this way, the negotiation between the second base station and the first base station for the resource scheduling information can avoid the collision of the resource occupation of each user equipment between the base stations, and realize the interference coordination of each cell, thereby avoiding the data of the user equipment of the coordinated cell. The interference of communication to the data communication of the user equipment of the cell. And the data communication device can obtain the resource scheduling information by using the information carried in the physical broadcast channel information sent by the first base station in the process of random access, so that the data communication device can be saved after the random access. The process of resource scheduling simplifies the process of data communication.

Embodiment 4 of the device of the present invention

A data communication device, that is, the user equipment described above, is shown in FIG. 13 and includes: a memory, a processor, an input device, and an output device respectively connected to the bus, wherein:

The memory is used to store data input from the input device, and may also store information such as necessary files processed by the processor; the input device and the output device are ports through which the data communication device communicates with other devices, and may further include an external data communication device. Devices such as monitors, keyboards, mice, and printers.

a processor, configured to receive, by the input device, physical broadcast channel information that is sent by the first base station in the serving cell, where the physical broadcast channel information includes an index number of the plurality of preamble sequence groups, where the same one of the preamble sequence groups Each of the preamble sequences corresponds to the same resource scheduling information; one of the plurality of preamble sequence groups included in the physical broadcast channel information is selected as a preamble sequence of the preamble sequence group; and the output device is controlled to send a random access request to the first base station, The random access request includes an index number of a preamble sequence group in which the selected preamble sequence is located; when the input device receives the uplink grant sent by the first base station, the uplink grant is that the second base station prohibits other users The device occupies the resource scheduling information corresponding to the resource index information indicated by the index number of the selected preamble sequence group, and returns the uplink grant that is sent by the first base station after the information that is allowed to be scheduled; the control input device and the output device are in the selected preamble sequence. The resource scheduling information indicated by the group corresponds to the resource for data communication. In this way, the negotiation between the second base station and the first base station for the resource scheduling information can avoid the conflict of resources occupied by the user equipments between the second base stations, and achieve interference coordination of each cell, thereby avoiding the cooperation of the user equipment of the coordinated cell. The interference of data communication to the data communication of the user equipment of the cell. And the data communication device can obtain the resource scheduling information by using the information carried in the physical broadcast channel information sent by the first base station in the process of random access, so that the data communication device can be saved after the random access. The process of resource scheduling simplifies the process of data communication.

The processor may determine the resource information occupied by the uplink data when selecting the preamble sequence group, and then select the location according to the determined resource information and the corresponding relationship between the index number of the preset preamble sequence group and the resource scheduling information. a set of preamble sequences corresponding to the determined resource information; selecting one preamble sequence in the selected set of preamble sequences.

Embodiment 5 of the device of the present invention

A data communication device is also provided, that is, the second base where the cooperation cell of the user equipment is located The structure of the station can be as shown in Figure 15, including:

The scheduling information receiving unit 40 is configured to receive resource scheduling information that is sent by the user equipment to perform data communication in the serving cell by the first base station where the serving cell of the user equipment is located;

The scheduling permission unit 41 is configured to prohibit other user equipments from occupying the resource scheduling information corresponding resources received by the scheduling information receiving unit 40, and send the scheduling allowed information to the first base station, so that the first base station notifies the The user equipment performs data communication on the resource scheduling information corresponding resource.

In a specific embodiment, the data communication apparatus may further include a scheduling prohibiting unit 42 configured to return to the first base station if the resource scheduling information corresponding to the resource received by the scheduling information receiving unit 40 has been occupied by another user equipment. The scheduled information is not allowed to cause the first base station to determine other resource scheduling information for data communication for the user equipment. It should be noted that when the scheduling permission unit 41 receives the information that the resource scheduling information corresponding to the resource release information sent by the first base station is successfully released, the resource scheduling information corresponding resource is invoked for other user equipments.

It can be seen that, in the data communication device of the embodiment of the present invention, the first base station where the user equipment serving cell is located sends the resource scheduling information of the user equipment for data communication in the serving cell to the second base station, so that the second base station prohibits other users. The device occupies the resource corresponding to the resource scheduling information. When receiving the information that is not allowed to be scheduled by the second base station, the first base station sends an uplink grant to the user equipment, and allows the user equipment to perform data communication on the resource corresponding to the resource scheduling information. In this way, the negotiation between the second base station and the first base station for the resource scheduling information can avoid the collision of the resource occupation of each user equipment between the base stations, and realize the interference coordination of each cell, thereby avoiding the data of the user equipment of the coordinated cell. The interference of communication to the data communication of the user equipment of the cell.

Embodiment 6 of the device of the present invention

A data communication device, that is, the foregoing second base station, is shown in FIG. 15 and includes: a memory, a processor, an input device, and an output device respectively connected to the bus, wherein:

a processor, configured to receive resource scheduling information that the user equipment performs data communication in the serving cell by the first base station where the serving cell of the user equipment is located, and prohibits other user equipment from occupying the resource scheduling information corresponding to the received resource, And controlling the output device to send the information that is allowed to be scheduled to the first base station, so that the first base station notifies the user equipment to perform data communication on the resource corresponding to the resource scheduling information. In this way, by negotiating the resource scheduling information between the data communication device and the first base station in this embodiment, the collision of resource occupation by each user equipment between the base stations can be avoided, and interference coordination of each cell is realized, thereby avoiding cooperation. The interference of the data communication of the cell user equipment to the data communication of the user equipment of the cell.

In a specific embodiment, the processor is further configured to: if the received resource scheduling information corresponding resource has been occupied by another user equipment, return information that is not allowed to be scheduled to the first base station, so that the first base station Other resource scheduling information for data communication is determined for the user equipment. And when the input device receives the information that the resource scheduling information sent by the first base station corresponds to the resource release success, the processor may further invoke the resource scheduling information corresponding resource for the other user equipment.

The embodiment of the present invention further provides a data communication system. The specific structure diagram may be as shown in FIG. 1b, including a first base station where the serving cell of the user equipment is located, and a second base station where the coordinated cell of the user equipment is located, where the first base station may As described in any of the data communication devices in the first embodiment, the second base station may be as described in the data communication device in the fifth embodiment of the device, and details are not described herein. In this embodiment, the base station management unit is a unit that is deployed in the first base station. In other specific embodiments, the base station management unit may be a unit deployed in the second base station.

The embodiment of the present invention further provides a data communication system. The specific structure diagram may be as shown in FIG. 1b, including a first base station where the serving cell of the user equipment is located, and a second base station where the coordinated cell of the user equipment is located, where the first base station may As described in any of the data communication devices in the second embodiment of the device, the second base station may be as described in the data communication device in the sixth embodiment of the device, and details are not described herein. In this embodiment, the base station management unit is a unit that is deployed in the first base station. In other specific embodiments, the base station management unit may be a unit deployed in the second base station.

The embodiment of the present invention further provides another data communication system. The specific structure diagram may be as shown in FIG. 1a, including a first base station where the serving cell of the user equipment is located, a base station management unit, and a second base station where the coordinated cell of the user equipment is located. The first base station may be as described in any one of the data communication devices in the first embodiment of the device, and the second base station may be as described in the data communication device in the fifth embodiment of the device, and is not described herein; the base station management unit is independent of the first a base station and a second base station device, For connecting the communication between the first base station and the second base station, information of each of the second base station and the first base station may be managed.

The embodiment of the present invention further provides a data communication system. The specific structure diagram may be as shown in FIG. 1a, including a first base station where the serving cell of the user equipment is located, a base station management unit, and a second base station where the coordinated cell of the user equipment is located, where The first base station may be as described in any of the data communication devices in the second embodiment of the device, and the second base station may be as described in the data communication device in the sixth embodiment of the device, and is not described herein; the base station management unit is independent of the first base station. The device of the second base station is configured to connect the communication between the first base station and the second base station, and can manage information of each of the second base station and the first base station.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Read only memory (ROM), random access memory (RAM), magnetic or optical disk, and the like.

The data communication method, system and device provided by the embodiments of the present invention are described in detail. The principles and embodiments of the present invention are described in the following. The description of the above embodiments is only for helping to understand the present invention. The method and its core idea; at the same time, those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of the specification should not be understood as Limitations of the invention.

Claims

A data communication method, comprising:

Determining, by the first base station, resource scheduling information that the user equipment performs data communication in the serving cell, where the first base station is a base station where the serving cell of the user equipment is located;

The first base station sends the resource scheduling information to the second base station, so that the second base station prohibits other user equipments from occupying resources corresponding to the resource scheduling information, and the second base station is a coordinated cell of the user equipment. The base station where it is located;

The first base station receives the information about the scheduling that is returned by the second base station, and sends an uplink grant to the user equipment, so that the user equipment performs data on the resource corresponding to the resource scheduling information in the serving cell. Communication.
The method of claim 1 wherein the method further comprises:

The first base station receives information that is not allowed to be scheduled returned by the second base station, and determines other resource scheduling information for performing data communication for the user equipment.
The method according to claim 1 or 2, wherein the base station determines, before the resource scheduling information of the data communication by the serving cell, the base station further includes:

The first base station sends physical broadcast channel information in the serving cell, and includes, in the physical broadcast channel information, an index number of multiple preamble sequence groups, where each preamble sequence in the same preamble sequence group corresponds to the same Resource scheduling information;

Receiving, by the first base station, a random access request sent by the user equipment, where the random access request includes an index number of a preamble sequence group determined by the user equipment according to the physical broadcast channel information;

The determining the resource scheduling information of the data communication by the user equipment, the method includes: determining, by the random access request, an index number of the preamble sequence group determined by the user equipment, and determining, by using the index number, the user equipment Resource scheduling information for data communication.
The method of claim 1 or 2, wherein the method further comprises:

The first base station detects, on the time-frequency resource specified by the resource scheduling information, uplink data of the user equipment for performing data communication;

Receiving uplink data of the user equipment on the detected frequency domain resource.
The method of claim 4 wherein said first base station is in said resource Before detecting the uplink data of the user equipment for data communication on the time-frequency resource specified by the scheduling information, the method further includes:

The first base station performs preamble sequence detection on the resources of all physical random access channels PRACH, and obtains an index number of the preamble sequence group selected by the user equipment;

After performing the detecting step of the preamble sequence, after the preset time, the first base station performs the step of detecting and receiving uplink data of the user equipment according to the determined resource scheduling information.
A data communication method, comprising:

The user equipment receives the physical broadcast channel information that is sent by the first base station in the serving cell, where the physical broadcast channel information includes an index number of the multiple preamble sequence groups, where each preamble sequence in the same preamble sequence group corresponds to the same resource. Scheduling information, the first base station is a base station where the serving cell of the user equipment is located;

The user equipment selects a preamble sequence of one of the plurality of preamble sequence groups;

The user equipment sends a random access request to the first base station, where the random access request includes an index number of a preamble sequence group in which the preamble sequence selected by the user equipment is located;

The user equipment receives an uplink grant sent by the first base station, where the uplink grant is that the second base station prohibits other user equipment from occupying resource corresponding to the resource scheduling information indicated by the index number of the selected preamble sequence group, and returns After the scheduling information is allowed, the uplink grant is sent by the first base station, and the second base station is a base station where the coordinated cell of the user equipment is located;

The user equipment performs data communication on the resource scheduling information corresponding resource indicated by the preamble sequence group where the selected preamble sequence is located.
The method according to claim 6, wherein the user equipment selects a preamble sequence of the one of the plurality of preamble sequence groups, and specifically includes:

Determining resource information occupied by uplink data;

And selecting, according to the determined resource information, a correspondence between an index number of the preset preamble sequence group and the resource scheduling information, and selecting a preamble sequence group corresponding to the determined resource information;

A leader sequence is selected among the selected set of leader sequences.
A data communication method, comprising:

Receiving, by the second base station, resource scheduling information that is sent by the user equipment that is sent by the first base station, where the serving cell is located, to the user equipment, where the second base station is the user; The base station where the coordinated cell of the device is located;

The second base station prohibits the other user equipment from occupying the resource corresponding to the resource scheduling information, and sends the information that is allowed to be scheduled to the first base station, so that the first base station notifies the user equipment in the serving cell. The resource scheduling information is used for data communication on the corresponding resource.
The method of claim 8 wherein the method further comprises:

And if the resource scheduling information corresponding resource is occupied by another user equipment, returning information that is not allowed to be scheduled to the first base station, so that the first base station determines, for the user equipment, other resource scheduling information for performing data communication.
A data communication device, comprising:

a scheduling information determining unit, configured to determine resource scheduling information that the user equipment performs data communication in the serving cell;

a scheduling information sending unit, configured to send the resource scheduling information determined by the scheduling information determining unit to the second base station, so that the second base station prohibits other user equipment from occupying resources corresponding to the resource scheduling information, where the second base station a base station where the coordinated cell of the user equipment is located;

And an authorization sending unit, configured to receive the information about the scheduling that is returned by the second base station, and send an uplink authorization to the user equipment, so that the user equipment performs data communication on the resource corresponding to the resource scheduling information in the serving cell. .
The apparatus according to claim 10, wherein the scheduling information determining unit is further configured to receive information that is not allowed to be scheduled returned by the second base station, and determine other resources for performing data communication for the user equipment. Scheduling information.
The device according to claim 10 or 11, further comprising:

a broadcast information sending unit, configured to send physical broadcast channel information in the serving cell, and include, in the physical broadcast channel information, an index number of a plurality of preamble sequence groups, where each preamble sequence in the same preamble sequence group Corresponding to the same resource scheduling information;

An access request receiving unit, configured to receive a random access request sent by the user equipment, where the random access request includes an index number of a preamble sequence group determined by the user equipment according to the physical broadcast channel information;

And the scheduling information determining unit is configured to: after the random access request received by the access request receiving unit, parse the index number of the preamble sequence group determined by the user equipment, and determine that the user equipment performs data communication. Resource scheduling information.
The device according to claim 10 or 11, further comprising:

The uplink detection receiving unit is configured to detect uplink data of the user equipment for data communication on the time-frequency resource corresponding to the resource scheduling information, and receive uplink data of the user equipment on the detected time-frequency resource.
The device of claim 13 further comprising:

a sequence detecting unit, configured to perform preamble sequence detection on resources of all physical random access channels (PRACH), and obtain an index number of a preamble sequence group selected by the user equipment;

The scheduling information determining unit is specifically configured to determine the resource scheduling information according to an index number of the preamble sequence group acquired by the sequence detecting unit;

The uplink detection receiving unit is configured to perform the step of performing the detecting and receiving uplink data of the user equipment according to the determined resource scheduling information after the sequence detecting unit detects the sequence index.
A data communication device, comprising:

a broadcast information receiving unit, configured to receive physical broadcast channel information that is sent by the first base station of the user equipment in the serving cell, where the physical broadcast channel information includes an index number of the plurality of preamble sequence groups, wherein the same preamble sequence group Each preamble sequence corresponds to the same resource scheduling information;

a sequence selection unit, configured to select a preamble sequence of one of the plurality of preamble sequence groups included in the physical broadcast channel information received by the broadcast information receiving unit;

An access requesting unit, configured to send a random access request to the first base station, where the random access request includes an index number of a preamble sequence group in which the preamble sequence selected by the sequence selection unit is located;

An authorization receiving unit, configured to receive an uplink grant sent by the first base station, where the uplink grant is a resource corresponding to the resource scheduling information indicated by the second base station in prohibiting other user equipment from occupying the index number of the selected preamble sequence group, And returning the uplink grant sent by the first base station after returning the information that is allowed to be scheduled; the second base station is a base station where the coordinated cell of the user equipment is located;

And a communication unit, configured to perform data communication on the resource scheduling information corresponding resource indicated by the preamble sequence group selected by the sequence selection unit.
The device of claim 15, wherein the sequence selection unit comprises:

a resource determining unit, configured to determine resource information occupied by the uplink data;

a selecting unit, configured to use the resource information determined by the resource determining unit, and preset And selecting a preamble sequence group corresponding to the determined resource information, and selecting a preamble sequence in the selected preamble sequence group.
A data communication device, comprising:

a scheduling information receiving unit, configured to receive resource scheduling information that is sent by the user equipment in the serving cell to perform data communication by the first base station where the serving cell of the user equipment is located;

a scheduling permission unit, configured to prohibit other user equipments from occupying the resource scheduling information corresponding resources, and sending the information that allows the scheduling to the first base station, so that the first base station notifies the user equipment of the resource scheduling information Data communication is performed on the corresponding resource.
The apparatus according to claim 17, further comprising: a scheduling prohibiting unit, configured to return, to the first base station, information that is not allowed to be scheduled, if the resource scheduling information corresponding resource has been occupied by another user equipment, And causing the first base station to determine, for the user equipment, other resource scheduling information for performing data communication.
A data communication system, comprising: a first base station where a serving cell of a user equipment is located, and a second base station where the coordinated cell of the user equipment is located;

The first base station is the data communication device according to any one of claims 10 to 14;

The second base station is the data communication device according to claim 17 or 18.
A data communication system, comprising: a first base station where a serving cell of a user equipment is located, a base station management unit, and a second base station where the coordinated cell of the user equipment is located;

The first base station is the data communication device according to any one of claims 10 to 14;

The second base station is the data communication device according to claim 17 or 18.

The base station management unit is configured to connect communications between the first base station and the second base station.