WO2015010227A1

WO2015010227A1 - Control method and apparatus for random access, random access method and apparatus

Info

Publication number: WO2015010227A1
Application number: PCT/CN2013/079749
Authority: WO
Inventors: 黄波; 刘文济; 黄曲芳
Original assignee: 华为技术有限公司
Priority date: 2013-07-20
Filing date: 2013-07-20
Publication date: 2015-01-29
Also published as: CN104854948B; CN104854948A

Abstract

Embodiments of the present invention provide a control method and apparatus for random access, and a random access method and apparatus. In the methods and apparatuses provided by the present invention, a base station can determine that a terminal delays random access, that is, delays the time of the terminal sending a next random access preamble, and notify the terminal, thereby preventing the base station from performing a large amount of processing and responses on random access processes initiated by terminals, and preventing excessive occupation of resources of the base station. The present invention is advantageous to improving the overall performance of the base station.

Description

Random access control method and device, random access method and device

The present invention relates to the field of communications, and in particular, to a random access control method and apparatus, and a random access method and apparatus. BACKGROUND In a Long Term Evolution (LTE) communication system, a terminal needs to acquire radio resources from a base station through a random access procedure.

In the existing LTE random access procedure, the terminal sends a random access preamble (message 1, ie, msgl) to the base station, and after receiving the random access preamble of the terminal, the base station feeds back the random access response to the terminal (message 2, ie, msg2) The terminal continues to send the message 3 (ie, msg3) to the base station, and the base station feeds back each received message. After the message between the terminal and the base station fails to communicate, the terminal sends the random access preamble to the base station again.

It can be seen that each time the terminal sends a random access preamble, the base station processes and responds to the received random access preamble. If the terminal repeatedly transmits the random access preamble, the base station must repeatedly process and respond, thereby causing the base station to Resources are being used too much. Summary of the invention

The embodiment of the present invention provides a method and a device for controlling random access, and a random access method and device, to solve the problem that the terminal repeatedly transmits the random access preamble and the resources of the base station are excessively occupied.

A first aspect of the present invention provides a method for controlling random access, including:

Receiving, by the base station, a random access preamble sent by the terminal;

The base station sends a random access response indicating that the terminal delays random access.

A second aspect of the present invention provides a random access method, including:

The terminal sends a random access preamble to the base station;

Receiving, by the terminal, a random access response from the base station, where the random access response indicates that the terminal delays random access; The terminal delays random access according to the random access response.

A third aspect of the present invention provides a random access device, including:

a first receiving unit, configured to receive a random access preamble sent by the terminal;

The first sending unit is configured to send a random access response indicating that the terminal delays random access. A fourth aspect of the present invention provides an apparatus, comprising:

a second sending unit, configured to send a random access preamble to the base station;

a second receiving unit, configured to receive a random access response from the base station, where the random access response indicates that the terminal delays random access;

And a third sending unit, configured to delay random access according to the random access response.

A fifth aspect of the present invention provides a base station, including:

a first receiver, configured to receive a random access preamble sent by the terminal;

The first transmitter is configured to send a random access response indicating that the terminal delays random access. A sixth aspect of the present invention provides an apparatus, including:

a second receiver, configured to receive a random access response;

And a second processor, configured to delay random access according to the random access response.

With the above technical solution, the base station can determine and notify the terminal to delay the random access, that is, delay the time at which the terminal sends the random access preamble next time, so as to prevent the base station from performing a large amount of processing on the random access procedure initiated by the terminal in a short time. And the response, to avoid the base station resources being excessively occupied, is beneficial to improve the overall performance of the base station. 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 creative work.

FIG. 1 is a flowchart of a random access control method according to an embodiment of the present invention; FIG. 2 is a flowchart of a random access method according to another embodiment of the present invention; Another random access control method flow provided by the embodiment Figure

4 is a schematic structural diagram of a MAC RAR according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a random access response according to an embodiment of the present disclosure;

FIG. 6 is a flowchart of still another method for random access according to another embodiment of the present invention; FIG. 7 is a schematic diagram of a method for controlling random access and a method for random access according to another embodiment of the present invention;

FIG. 8 is a schematic diagram of still another method for controlling random access and a random access method according to another embodiment of the present invention; FIG.

Figure 9 is a device according to another embodiment of the present invention;

Figure 10 is still another apparatus provided by another embodiment of the present invention;

Figure 11 is still another apparatus provided by another embodiment of the present invention;

FIG. 12 is still another apparatus provided by another embodiment of the present invention. detailed description

The embodiment of the invention discloses a random access control method and device and a random access method and device. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for controlling random access. As shown in FIG. 1, the method includes:

S101: The base station receives a random access preamble sent by the terminal.

S102: The base station sends a random access response indicating that the terminal delays random access. In this embodiment, the base station may send a random access response indicating that the terminal delays random access to the terminal. If the base station does not want the terminal to repeatedly send the random access preamble and occupy a large amount of resources, the base station may notify the delayed random access, thereby saving Base station resources.

Another embodiment of the present invention provides a random access method, as shown in FIG. 2, including: S201: A terminal sends a random access preamble to a base station; S202: The terminal receives a random access response from the base station, where the random access response indicates that the terminal delays random access;

S203: The terminal delays random access according to the random access response.

In this embodiment, the terminal delays the random access according to the random access response sent by the base station, which is beneficial to reducing the occupation of the base station resources by the random access.

The embodiment of the present invention provides another method for controlling random access, as shown in FIG. 3, including: S301: The base station receives a random access preamble sent by the terminal;

S302: The base station determines that the terminal is a terminal that covers the handover;

For example, a handover-over terminal refers to a terminal that is outside the coverage of the base station specification. Therefore, optionally, in this step, the base station determines whether the terminal is a terminal that covers the handover, and if yes, step S303 is performed;

Optionally, the base station reads a Time Alignment (TA) value in the preamble message, and determines whether the terminal is a terminal that covers the handover. For example, when the TA value is greater than a preset threshold, the base station may determine that the terminal is a handover-covered terminal.

S303: The base station sends a random access response indicating that the terminal delays random access.

The scenario applicable to the embodiment includes: when the terminal that the base station does not want to cover the area occupies its resources, the terminal may notify the terminal to delay the random access by using a random access response.

Optionally, the instructing the terminal to delay the random access in the embodiment includes: instructing the terminal to delay sending the next random access preamble after being delayed for a period of time, that is, instructing the terminal to delay sending the random access next time Leading time.

In this embodiment, the base station indicates that the terminal delays random access, and may have multiple implementation manners.

For example, the random access response includes an uplink grant (UL Grant), and the value of the UL Grant is 0. It can be understood that the example includes the case where the random access response includes multiple UL Grants, and the value of each UL Grant is 0.

Further, the random access response may include a Media Access Control header (MAC header) and a Media Access Control Random Access Response (MAC RAR), and a MAC RAR port map. 4, where the UL Grant value is used to indicate an uplink grant resource. In this embodiment, the UL Grant value is 0. It is indicated that the base station does not allocate uplink resources to the terminal. Therefore, in this embodiment, the UL Grant value of 0 can be used to indicate that the terminal delays random access.

Optionally, the random access response further includes a temporary cell radio network temporary identifier (Temporary C-RNTI), and the value of the Temporary C-RNTI indicates that the terminal enables the preset Delay time. Further, the value of the Temporary C-RNTI may be OxFFFC to indicate that the terminal enables the preset delay time. Optionally, the preset delay time is 60000 milliseconds. It should be noted that the value of the Temporary C-RNTI may be regarded as an index of the time that the terminal needs to be delayed, that is, the value of the Temporary C-RNTI indicates that the terminal needs to delay, which is equivalent to The case where the value of the Temporary C-RNTI is OxFFFC is directly regarded as indicating to the terminal that the preset delay time is a certain time, for example, 60000 milliseconds.

For another example, the payload corresponding to the identifier of the random access preamble in the random access response is empty, and may also be used to indicate that the terminal delays random access. Optionally, as shown in FIG. 5, the random access response may include a media access control message header MAC header and a medium access control random access response MAC RAR, where a last subheader in the MAC header includes The identifier of the random access preamble, and the MAC RAR corresponding to the last subheader is empty. For example, the MAC header has a total of six sub-headers, which respectively carry the identifiers of the random access preambles of the six terminals, and the identifier of the random access preamble of the terminal is carried in the last sub-header, and the random access response includes only 5 MAC RAR.

In the method of the embodiment, the base station delays the time of the next random access preamble by using the random access response sent by the terminal, thereby reducing the number of random access preambles of the receiving terminal and saving resources of the base station.

The embodiment of the present invention provides another random access method, as shown in FIG. 6, including:

S601: The terminal sends a random access preamble to the base station.

S602: The terminal receives a random access response from the base station, where the random access response indicates that the terminal delays random access;

S603: Determine whether the number of times the terminal sends a random access preamble to the base station is greater than a preset number of times before the terminal receives the random access response from the base station, if yes, execute S604, if no, execute S601 ; In this embodiment, the purpose of setting the limit of the number of times of transmitting the random access preamble is to: if a non-override-covered terminal transmits the same time on the same time transmission interval (TTI) as the terminal covered by the handover. The random access preamble, and the 3⁄4^ station mistakenly considers that it is a handover-capable terminal, and the non-transit-covered terminal can continue to perform random access without delaying random access due to misjudgment of the base station. That is to say, after the above judgment about the number of times of sending the random access preamble is added, the method for delaying the random access can be avoided to "injure" the terminal in the normal coverage of the base station, that is, to avoid causing the base station to have normal coverage. The terminal is improperly delayed by the random access procedure.

In this embodiment, the preset number of times is 1 as an example. After S603, if it jumps to S601 and sequentially proceeds to S603, then the terminal accumulates the number of times of transmitting the random access preamble to the base station to 2, and then jumps to S604.

S604: The terminal delays random access according to the random access response.

The process of delaying random access by the terminal may be different according to the received random access response.

For example, the random access response includes a UL Grant, and when the value of the UL Grant is 0, the terminal determines that the random access response indicates that the terminal delays random access, and delays a preset delay time or After the delay time obtained by the terminal by other means, the random access preamble is sent to the base station.

Optionally, the random access response further includes a Temporary C-RNTI, where the value of the Temporary C-RNTI (for example, OxFFFC) indicates that the terminal enables a preset delay time (for example, 60000 milliseconds), then the terminal After receiving the random access response from the base station and delaying the preset delay time, sending the random access preamble to the base station.

For example, the payload corresponding to the identifier of the random access preamble in the random access response is empty. Further, the random access response includes a MAC header and a MAC RAR, and the last of the MAC headers. a sub-header includes an identifier of the random access preamble, and when the MAC RAR corresponding to the last sub-header is empty, the terminal receives the random access response from the base station, and delays a preset time. Sending the random access preamble to the base station. The preset time may be 60000 milliseconds.

In this embodiment, the condition for determining whether the terminal delays transmitting the random preamble is "the terminal direction Whether the number of times the base station sends the random access preamble is greater than the preset number of times, and the condition for determining whether the terminal delays transmitting the random preamble may be: "whether the number of times the terminal sends the random access preamble to the base station is not If the number of times the terminal sends a random access preamble to the base station is not less than a preset number of times before the terminal receives the random access response from the base station, the terminal according to the Or a random access response, delaying the random access; or, if the terminal sends the random access preamble to the base station less than the preset number of times before the terminal receives the random access response from the base station, Transmitting, by the terminal, the random access preamble to the base station, when the terminal sends the random access preamble to the base station, the number of times of the random access preamble is not less than a preset number of times, the terminal according to the random access response message , delayed random access.

The random access procedure based on the foregoing determining condition that the terminal sends the random access preamble to the base station is not less than a preset number of times, similar to the process shown in FIG. 6, including: the terminal sends random access to the base station. Leading

Receiving, by the terminal, a random access response from the base station, where the random access response indicates that the terminal delays random access;

Determining whether the number of times the terminal sends a random access preamble to the base station is not less than a preset number of times before the terminal receives the random access response from the base station, and if yes, the terminal according to the random access In response to delaying random access, the process of delaying random access may be as described in S604, and if not, the terminal transmitting the random access preamble to the base station.

In the method in this embodiment, the base station sends a random access preamble according to the random access response delay, so that the occupation of the base station resources can be reduced.

The foregoing method embodiments are described separately from the network side and the terminal side. It can be understood that the foregoing method embodiments may be combined. For example, the embodiment shown in FIG. 3 and the embodiment shown in FIG. 6 may be combined, and thus each The description in the embodiments is different, and the technical details and examples are not described in detail with reference to the other embodiments. The combination of the embodiments will be exemplified below.

For example, as shown in FIG. 7, the method provided by the embodiment of the present invention may include:

S701: The terminal sends a random access preamble to the base station.

S702: The base station receives a random access preamble sent by the terminal.

S703: The base station determines that the terminal is a terminal that covers a handover;

S704: The base station sends a random access response, as shown in FIG. 4, the random access response. The values of the three UL Grants are all 0, and the value of the Temporary C-RNTI is OxFFFC;

S705: The terminal receives the random access response from the base station.

S706: The terminal determines that the random access response indicates that the terminal delays random access. S707: The terminal determines that the terminal sends a random connection to the base station before receiving the random access response from the base station. The number of times of entering the preamble is greater than the preset number of times, and the preset number of times is 0;

S708: The terminal starts timing when the random access response is received from the base station, and after reaching 60000 milliseconds, sends the random access preamble to the base station.

In the method of the embodiment, when the base station determines that the terminal that sends the random access preamble message is the terminal that covers the coverage, the base station is notified by the random access response message to delay sending the random access preamble, thereby saving resources of the base station.

As another example, as shown in FIG. 8, the method provided by the embodiment of the present invention may include:

S801: The terminal sends a random access preamble to the base station.

S802: The base station receives a random access preamble sent by the terminal.

S803: The base station determines that the terminal is a terminal that covers a handover;

S804: The base station sends a random access response, where the random access response includes a MAC header and a MAC RAR, and a last subhead in the MAC header includes an identifier of the random access preamble, and the last one The MAC RAR corresponding to the subheader is empty;

S805: The terminal receives the random access response from the base station.

S806: The terminal determines that the random access response indicates that the terminal delays random access. S807: The terminal determines that the terminal sends a random connection to the base station before receiving the random access response from the base station. The number of incoming preambles is not greater than the preset number of times, and the preset number of times is 1;

S808-S813 : same as the above S801-S806;

S814: The terminal determines that the number of times the terminal sends a random access preamble to the base station is greater than a preset number of times before receiving the random access response from the base station, where the preset number of times is 1;

S815: The terminal starts timing when receiving the random access response from the base station, and after reaching 60000 milliseconds, sends the random access preamble to the base station.

In this embodiment, the base station informs the terminal by sending a random access response message including the random access preamble sent by the terminal, but does not include the random access preamble corresponding to the identifier of the random access preamble sent by the terminal. Received the random access preamble message it sent, but not It allocates resources and causes the terminal to delay the initiation of random access, thereby saving resources of the base station. As shown in FIG. 9, an embodiment of the present invention provides an apparatus, which may be used to implement the steps performed by a base station in the method provided in the foregoing embodiment. The device can include:

The first receiving unit 901 is configured to receive a random access preamble sent by the terminal.

The first sending unit 902 is configured to send a random access response indicating that the terminal delays random access. For example, the first sending unit 902 sends a random access response indicating that the terminal delays the time of transmitting the random access preamble next time.

In this embodiment, the first sending unit 902 may include different subunits.

For example, the first sending unit 902 includes: a first sending subunit, configured to send a random access response including a UL Grant, where the value of the UL Grant is 0; or, a second sending subunit, configured to send And a random access response, where a payload corresponding to the identifier of the random access preamble in the random access response is empty.

Optionally, the first sending subunit includes: a first sending module, configured to send, including a UL

The random access response of the Grant and Temporary C-RNTI, the value of the UL Grant is 0, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time.

Optionally, the second sending subunit includes: a second sending module, configured to send a random access response, where the random access response includes a media access control message header MAC header and a media access control random access response MAC RAR, the last subheader in the MAC header includes an identifier of the random access preamble, and a MAC RAR corresponding to the last subheader is empty.

For another example, the first sending unit 902 includes: a first determining subunit and a third sending subunit. The first determining subunit is configured to send, by the base station, a random access response indicating that the terminal delays random access after determining whether the terminal is a terminal that is covered by the handover.

Optionally, the first determining subunit includes: a first determining module, configured to determine, when the timing alignment TA value in the random access preamble is greater than a preset threshold, to determine that the terminal is a handover-covered terminal.

Optionally, the third sending subunit includes: a third sending module, configured to send a random access response including a UL Grant, where the value of the UL Grant is 0; or, a fourth sending module, configured to send a random access response, the random access preamble and the random access preamble The corresponding payload of the identifier is empty.

The device in this embodiment may send a random access response indicating that the terminal delays random access to the terminal, thereby saving resources of the base station.

As shown in FIG. 10, another embodiment of the present invention provides a device, which can be used to implement the steps performed by the terminal in the method provided by the foregoing embodiment. The device can include:

a second sending unit 1001, configured to send a random access preamble to the base station;

The second receiving unit 1002 is configured to receive a random access response from the base station, where the random access response indicates that the terminal delays random access;

The third sending unit 1003 is configured to delay random access according to the random access response. Optionally, the device further includes: a first processing unit, configured to: when the random access response includes a UL Grant, where the value of the UL Grant is 0, determining that the random access response indicates that the terminal delays random access In.

In this embodiment, the third sending unit 1003 may include different subunits.

For example, the third sending unit 1003 includes: a fifth sending subunit, where the random access response includes a Temporary C-RNTI, where the value of the Temporary C-RNTI indicates that the terminal enables a preset delay time After receiving the random access response from the base station and delaying the preset delay time, sending the random access preamble to the base station.

For another example, the third sending unit 1003 includes: a sixth sending subunit, configured to: when the payload corresponding to the identifier of the random access preamble in the random access response is empty, Receiving the random access response, and delaying the preset time, sending the random access preamble to the base station.

Optionally, the sixth sending subunit includes: a fifth sending module, where the random access response includes a MAC header and a MAC RAR, and a last subhead in the MAC header includes the random access preamble And after the MAC RAR corresponding to the last sub-head is empty, after receiving the random access response from the base station, and delaying a preset delay time, sending the random access to the base station Leading.

For another example, the third sending unit 1003 includes: a second determining subunit and a seventh sending subunit, where: the second determining subunit is configured to determine, before receiving the random access response from the base station, to the Whether the number of times the base station sends the random access preamble is greater than a preset number of times; The unit is configured to send the random access preamble to the base station for a preset number of times before receiving the random access response from the base station, and send the Or the random access preamble; or, if the number of random access preambles sent to the base station is not greater than a preset number of times before receiving the random access response from the base station, sending the random access preamble to the base station And after the number of times the random access preamble is sent to the base station is greater than a preset number of times, after receiving the random access response from the base station and delaying the preset time, sending the random access preamble to the base station.

Optionally, the seventh sending subunit includes: a sixth sending module, or a seventh sending module.

Wherein: a sixth sending module, where the random access response includes a UL Grant and

Temporary C-RNTI, the value of the UL Grant is 0, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time, before receiving the random access response from the base station, If the number of times the base station sends the random access preamble is greater than the preset number of times, the random access preamble is sent to the base station after delaying the preset delay time; or the random access response includes the UL Grant and the Temporary C-RNTI, the value of the UL Grant is 0, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time, before receiving the random access response from the base station, When the number of times the base station sends the random access preamble is not greater than the preset number of times, the random access preamble is sent to the base station, until the number of times the random access preamble is sent to the base station is greater than a preset number of times, After receiving the random access response and delaying the preset delay time, the base station sends the random access preamble to the base station.

a seventh sending module, configured to: when the payload corresponding to the identifier of the random access preamble in the random access response is empty, before receiving the random access response from the base station, to the base station The number of times the random access preamble is sent is greater than the preset number of times, and the random access preamble is sent to the base station after the preset time is delayed; or the random access preamble in the random access response When the payload corresponding to the identifier is empty, if the number of times the random access preamble is sent to the base station is not greater than the preset number of times before receiving the random access response from the base station, the random connection is sent to the base station. Entering a preamble, until the number of times the random access preamble is sent to the base station is greater than a preset number of times, receiving a random access response from the base station and delaying the preset After the time, the random access preamble is sent to the base station.

The device in this embodiment delays the random access according to the random access response sent by the base station, which is beneficial to reducing the occupation of the base station resources by the random access.

As shown in FIG. 11, the embodiment of the present invention further provides a device, which may be a base station, and may be used to implement the steps performed by the base station in the method provided by the foregoing embodiment. The base station may include: a first receiver 1101, configured to receive a random access preamble sent by the terminal; and a first transmitter 1102, configured to send a random access response indicating that the terminal delays random access. It can be understood that the first receiver 1101 and the first transmitter 1102 can be connected through a data bus inside the base station, and can also be connected to the antenna to implement communication with the outside.

Optionally, the first receiver 1101 is specifically configured to: when the terminal is a terminal that covers the handover, send a random access response indicating that the terminal delays random access.

Optionally, the first transmitter 1102 is specifically configured to send a random access response, where the random access response includes an uplink grant UL Grant, and the value of the UL Grant is 0.

Optionally, when the first transmitter 1102 is configured to send a random access response, the random access response further includes a Temporary C-RNTI, where the value of the Temporary C-RNTI indicates that the terminal enables the preset delay.

Optionally, the first transmitter 1102 is specifically configured to send a random access response, where a payload corresponding to the identifier of the random access preamble in the random access response is empty. For example, the first transmitter 1102 is specifically configured to send a random access response, where the random access response includes: a media access control message header MAC header and a medium access control random access response MAC RAR, the MAC header The last sub-header includes an identifier of the random access preamble, and a MAC RAR corresponding to the last sub-header is empty.

Optionally, the device further includes: a first processor, configured to determine, when the timing alignment TA value in the random access preamble is greater than a preset threshold, that the terminal is a handover-over terminal.

It is to be understood that the first transmitter 1102 is configured to send a random access response indicating that the terminal delays random access, and the first transmitter 1102 is configured to send the indication that the terminal delays sending the next time. The random access response of the time at which the preamble is randomly accessed.

The device in this embodiment may send a random access response indicating that the terminal delays random access to the terminal, thereby saving resources of the base station. As shown in FIG. 12, the embodiment of the present invention provides a device, which may be a terminal, and is used to implement the steps performed by the terminal in the method provided by the foregoing embodiment. The device can include:

The second receiver 1201 is configured to receive a random access response, and the second processor 1202 is configured to delay random access according to the random access response.

Optionally, the second receiver 1201 is specifically configured to receive a random access response, where the random access response includes an uplink grant UL Grant, and the value of the UL Grant is 0.

Optionally, the second processor 1202 is specifically configured to: when the processor sends the random access preamble more than a preset number of times before the second receiver 1201 receives the random access response, And the second processor 1202 is specifically configured to: send, before the second receiver 1201 receives the random access response, the random When the number of times of accessing the preamble is not greater than the preset number of times, the random access preamble is sent to the base station until the number of times the second processor 1202 sends the random access preamble is greater than a preset number of times, according to the random connection. Incoming response message, delay random access.

Optionally, the second receiver 1201 is specifically configured to receive a random access response, where the random access response message includes a Temporary C-RNTI, and the value of the Temporary C-RNTI indicates that the terminal enables a preset delay. time.

Optionally, the second processor 1202 is configured to delay random access according to the random access response, where the second processor 1202 is configured to receive the random access in the second receiver 1201. After responding, and delaying the preset delay time, sending the random access preamble to the base station.

Optionally, the second receiver 1201 is specifically configured to receive a random access response, where a payload corresponding to the identifier of the random access preamble in the random access response is empty. For example, the second receiver 1201 is specifically configured to receive a random access response, where the random access response includes a media access control message header MAC header and a medium access control random access response MAC RAR, where the MAC header is The last sub-header includes the identifier of the random access preamble, and the MAC RAR corresponding to the last sub-header is empty.

The second processor 1202 is configured to delay the random access according to the random access response, where the second processor 1202 is configured to receive the random access response, and delay the preset time. Sending the random access preamble to the base station. The device in this embodiment delays the random access according to the random access response sent by the base station, which is beneficial to reducing the occupation of the base station resources by the random access. The devices and devices provided in the examples are cross-referenced and will not be described again.

The functions described in the method of the present embodiment can be stored in a readable storage medium of a computing device if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the embodiments of the present invention that contributes to the prior art or a portion of the technical solution may be embodied in the form of a software product stored in a storage medium, including a plurality of parameters for causing a The computing device (which may be a personal computer, server, mobile computing device, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same or similar parts of the various embodiments may be referred to each other.

The above description of the provided embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

Rights request

1. A random access control method, characterized by including:

The base station receives the random access preamble sent by the terminal;

The base station sends a random access response instructing the terminal to delay random access.

2. The method according to claim 1, wherein the base station sending a random access response instructing the terminal to delay random access includes:

If the terminal is a terminal covered by cross-area coverage, the base station sends a random access response instructing the terminal to delay random access.

3. The method according to claim 1 or 2, characterized in that the random access response includes an uplink grant UL Grant, and the value of the UL Grant is 0.

4. The method according to any one of claims 1 to 3, characterized in that, the random access response includes a temporary cell radio network temporary identifier Temporary C-RNTI, and the value of the Temporary C-RNTI indicates the The terminal enables the preset delay time.

5. The method according to claim 4, characterized in that the value of the Temporary C-RNTI is 0xFFFC.

6. The method according to claim 4 or 5, characterized in that the preset delay time is 60,000 milliseconds.

7. The method according to claim 1 or 2, characterized in that the payload corresponding to the identifier of the random access preamble in the random access response is empty.

8. The method according to claim 7, characterized in that, the random access response includes a media access control message header MAC header and a media access control random access response MAC RAR, the last one of the MAC headers The subheader includes the identifier of the random access preamble, and the MAC RAR corresponding to the last subheader is empty.

9. The method according to any one of claims 2 to 8, characterized in that the method further includes:

When the timing alignment TA value in the random access preamble is greater than a preset threshold, the base station determines that the terminal is a terminal with cross-area coverage.

10. The method according to any one of claims 1 to 9, wherein the instructing the terminal to delay random access includes: instructing the terminal to delay sending the random access next time. Leading time.

11. A random access method, characterized by including:

The terminal sends a random access preamble to the base station;

The terminal receives a random access response from the base station, and the random access response instructs the terminal to delay random access;

The terminal delays random access according to the random access response.

12. The method according to claim 11, characterized in that, the method further includes: the random access response includes UL Grant, and when the value of the UL Grant is 0, the terminal determines the random access The response instructs the terminal to delay random access.

13. The method according to claim 11 or 12, wherein the terminal delays random access according to the random access response message including:

If the number of times the terminal sends a random access preamble to the base station is greater than a preset number of times before the terminal receives the random access response from the base station, the terminal delays randomly according to the random access response. access; or,

If the number of times the terminal sends a random access preamble to the base station is not greater than a preset number of times before the terminal receives the random access response from the base station, then the terminal sends the random access preamble to the base station. Enter the preamble, and until the number of times the terminal sends the random access preamble to the base station is greater than the preset number, the terminal delays random access according to the random access response message.

14. The method according to any one of claims 11 to 13, wherein the random access response includes Temporary C-RNTI, and the value of the Temporary C-RNTI indicates that the terminal enables a preset delay time. .

15. The method according to claim 14, characterized in that the value of the Temporary C-RNTI is 0xFFFC...

16. The method according to claim 14 or 15, characterized in that the preset delay time is 60000 milliseconds.

17. The method according to any one of claims 14 to 16, wherein the terminal delays random access according to the random access response including:

The terminal receives the random access response from the base station and delays the preset delay. After a delay time, the random access preamble is sent to the base station.

18. The method according to claim 11 or 12, characterized in that the payload corresponding to the identifier of the random access preamble in the random access response is empty.

19. The method according to claim 18, characterized in that the random access response includes a media access control message header (MAC header) and a media access control random access response (MAC).

RAR, the last subheader in the MAC header includes the identifier of the random access preamble, and the MAC RAR corresponding to the last subheader is empty.

20. The method according to claim 13 or 18 or 19, characterized in that, according to the random access response of the terminal, delaying random access includes:

After receiving the random access response from the base station and delaying for a preset time, the terminal sends the random access preamble to the base station.

21. A device, characterized in that it includes:

The first receiving unit is used to receive the random access preamble sent by the terminal;

The first sending unit is configured to send a random access response instructing the terminal to delay random access.

22. The device according to claim 21, characterized in that the first sending unit includes at least any of the following:

The first sending subunit is used to send a random access response including a UL Grant, where the value of the UL Grant is 0;

The second sending subunit is configured to send a random access response, where the payload corresponding to the identifier of the random access preamble in the random access response is empty.

23. The device according to claim 22, characterized in that the first sending subunit includes:

The first sending module is configured to send a random access response including UL Grant and Temporary C-RNTI, the value of the UL Grant is 0, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time.

24. The device according to claim 22 or 23, characterized in that the second sending subunit includes:

The second sending module is used to send a random access response. The random access response includes a media access control message header MAC header and a media access control random access response MAC RAR. The last subheader in the MAC header includes the identifier of the random access preamble, and the MAC RAR corresponding to the last subheader is empty.

25. The device according to claim 21, characterized in that, the first sending unit includes: a first judging subunit, used by the base station to judge whether the terminal is a cross-coverage terminal; a third sending subunit , configured to send a random access response instructing the terminal to delay random access after the determination subunit determines that the terminal is a terminal covered by cross-area coverage.

26. The device according to claim 25, characterized in that the first judgment subunit includes:

The first judgment module is used to determine that the terminal is a terminal with cross-area coverage when the timing alignment TA value in the random access preamble is greater than a preset threshold.

27. The device according to claim 25 or 26, characterized in that the third sending subunit includes at least any of the following:

The third sending module is used to send a random access response including a UL Grant, where the value of the UL Grant is 0;

The fourth sending module is configured to send a random access response, where the payload corresponding to the identifier of the random access preamble in the random access response is empty.

28. The apparatus according to claim 21, wherein the first sending unit, configured to send a random access response indicating that the terminal delays random access, includes:

The first sending unit is configured to send a random access response instructing the terminal to delay the next time of sending the random access preamble.

29. A device, characterized in that it includes:

The second sending unit is used to send the random access preamble to the base station;

The second receiving unit is configured to receive a random access response from the base station, where the random access response instructs the terminal to delay random access;

The third sending unit is configured to delay random access according to the random access response.

30. The device according to claim 29, characterized in that, the device further includes: a first processing unit, configured to determine when the random access response includes UL Grant and the value of UL Grant is 0. The random access response instructs the terminal to delay random access.

31. The device according to claim 29 or 30, characterized in that the third sending Units include:

The fifth sending subunit is used for the random access response to include Temporary C-RNTI, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time when receiving the random access response from the base station. After receiving a response and delaying the preset delay time, the random access preamble is sent to the base station.

32. The device according to claim 29, characterized in that the third sending unit includes:

The sixth sending subunit is used to receive the random access response from the base station when the payload corresponding to the identifier of the random access preamble in the random access response is empty, and delay the preset After a period of time, the random access preamble is sent to the base station.

33. The device according to claim 32, characterized in that the sixth sending subunit includes:

The fifth sending module is used for the random access response to include a MAC header and a MAC RAR, the last subheader in the MAC header including the identifier of the random access preamble, and the MAC corresponding to the last subheader. When the RAR is empty, after receiving the random access response from the base station and delaying for a preset delay time, the random access preamble is sent to the base station.

34. The device according to claim 29, characterized in that the third sending unit includes:

The second judgment subunit is used to judge whether the number of times the random access preamble is sent to the base station before receiving the random access response from the base station is greater than the preset number;

The seventh sending subunit is configured to, if the number of times the random access preamble is sent to the base station is greater than the preset number of times before receiving the random access response from the base station, then after delaying the preset delay time, send the random access preamble to the base station. The base station sends the random access preamble; or, if the number of times the random access preamble is sent to the base station is not greater than a preset number of times before receiving the random access response from the base station, then the random access preamble is sent to the base station. The random access preamble is sent to the base station until the number of times the random access preamble is sent to the base station is greater than the preset number of times. After receiving the random access response from the base station and delaying the preset time, the random access preamble is sent to the base station. Random access preamble.

35. The device according to claim 34, characterized in that, the seventh sending subunit include:

The sixth sending module is used for the random access response to include UL Grant and Temporary C-RNTI, the value of the UL Grant is 0, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time. , if the number of times the random access preamble is sent to the base station is greater than the preset number of times before receiving the random access response from the base station, then after delaying the preset delay time, the number of times the random access preamble is sent to the base station is sent to the base station. Random access preamble; Alternatively, the random access response includes UL Grant and Temporary C-RNTI, the value of the UL Grant is 0, and the value of the Temporary C-RNTI indicates that the terminal enables the preset delay time. , if the number of times the random access preamble is sent to the base station is not greater than the preset number of times before receiving the random access response from the base station, then the random access preamble is sent to the base station until the number of times the random access preamble is sent to the base station is When the number of times the random access preamble is sent is greater than the preset number, after receiving a random access response from the base station and delaying the preset delay time, sending the random access preamble to the base station; or,

The seventh sending module is used to send a message to the base station before receiving the random access response from the base station when the payload corresponding to the identifier of the random access preamble in the random access response is empty. If the number of times the random access preamble is sent is greater than the preset number, then the random access preamble is sent to the base station after a preset time delay; or, the random access preamble in the random access response is the same as the random access preamble. When the payload corresponding to the identifier is empty, if the number of times the random access preamble is sent to the base station is not greater than the preset number of times before receiving the random access response from the base station, then the random access preamble is sent to the base station. into the preamble, until the number of times the random access preamble is sent to the base station is greater than the preset number, after receiving the random access response from the base station and delaying the preset time, sending the random access preamble to the base station Preamble.

36. A base station, characterized by including:

The first receiver is used to receive the random access preamble sent by the terminal;

The first sender is configured to send a random access response instructing the terminal to delay random access.

37. The device according to claim 36, characterized in that, the first receiver is used to receive the random access preamble sent by the terminal including:

The first receiver is configured to, when the terminal is a terminal covered by cross-area coverage, send a random access response instructing the terminal to delay random access.

38. The device according to claim 36 or 37, wherein the first transmitter is configured to send a random access response indicating that the terminal delays random access including:

The first transmitter is used to send a random access response, where the random access response includes an uplink grant UL Grant, and the value of the UL Grant is 0.

39. The device according to any one of claims 36 to 38, wherein the first transmitter is configured to send a random access response indicating that the terminal delays random access including:

The first transmitter is used to send a random access response. The random access response includes a temporary cell wireless network temporary identifier Temporary C-RNTI. The value of the Temporary C-RNTI indicates that the terminal enables a preset delay time. .

40. The device according to claim 36 or 38, wherein the first transmitter is configured to send a random access response indicating that the terminal delays random access including:

The first transmitter is configured to send a random access response, and the payload corresponding to the identifier of the random access preamble in the random access response is empty.

41. The device according to claim 40, characterized in that, the first transmitter is configured to send a random access response, and the payload corresponding to the identifier of the random access preamble in the random access response is Empty, including:

The first sender is used to send a random access response. The random access response includes: a media access control message header MAC header and a media access control random access response MAC RAR. The last sub-word in the MAC header The header includes the identifier of the random access preamble, and the MAC RAR corresponding to the last sub-header is empty.

42. The device according to any one of claims 36 to 41, characterized in that the device further includes a first processor configured to ensure that the timing alignment TA value in the random access preamble is greater than a preset value. When the threshold is reached, the terminal is determined to be a cross-coverage terminal.

43. The device according to any one of claims 36 to 42, wherein the first transmitter is configured to send a random access response indicating that the terminal delays random access including:

The first transmitter is configured to send a random access response instructing the terminal to delay the next time of sending the random access preamble.

44. The device according to any one of claims 36 to 43, characterized in that the device is a base station.

45. A device, characterized in that it includes:

The second receiver is used to receive the random access response;

The second processor is configured to delay random access according to the random access response.

46. The device according to claim 45, wherein the second receiver is used to receive a random access response including:

The second receiver is configured to receive a random access response, where the random access response includes an uplink grant UL Grant, and the value of the UL Grant is 0.

47. The device according to claim 46 or 47, wherein the second processor is configured to delay random access according to the random access response including:

The second processor is configured to: when the number of times the processor sends a random access preamble is greater than a preset number of times before the second receiver receives the random access response, according to the random access response, delayed random access; or,

The second processor is configured to: send the random access preamble to the base station when the number of times the processor sends the random access preamble is not greater than a preset number of times before the second receiver receives the random access response. Enter the preamble until the number of times the second processor sends the random access preamble is greater than the preset number of times, and then delay the random access according to the random access response message.

48. The device according to any one of claims 45 to 47, wherein the second receiver is used to receive a random access response including:

The second receiver is configured to receive a random access response. The random access response message includes a temporary cell radio network temporary identifier Temporary C-RNTI. The value of the Temporary C-RNTI indicates that the terminal enables a preset delay. time.

49. The device according to any one of claims 45 to 48, wherein the second processor is configured to delay random access according to the random access response including:

The second processor is configured to send the random access preamble to the base station after the second receiver receives the random access response and delays the preset delay time.

50. The device according to claim 45 or 46, wherein the second receiver is used to receive a random access response including:

The second receiver is configured to receive a random access response, where the payload corresponding to the identifier of the random access preamble in the random access response is empty.

51. The device according to claim 50, wherein the second receiver is configured to receive a random access response, and the payload corresponding to the identifier of the random access preamble in the random access response is Empty, including:

The second receiver is used to receive a random access response. The random access response includes a media access control message header MAC header and a media access control random access response MAC RAR. The last subheader in the MAC header Including the identifier of the random access preamble, the MAC RAR corresponding to the last subheader is empty.

52. The device according to claim 47 or 50 or 51, wherein the second processor is configured to delay random access according to the random access response including:

The second processor is configured to: receive the random access response, and after delaying a preset time, send the random access preamble to the base station.