WO2016119227A1

WO2016119227A1 - Random access contention resolution method, user equipment and base station

Info

Publication number: WO2016119227A1
Application number: PCT/CN2015/071970
Authority: WO
Inventors: 曹振臻
Original assignee: 华为技术有限公司
Priority date: 2015-01-30
Filing date: 2015-01-30
Publication date: 2016-08-04
Also published as: CN106031288A

Abstract

Disclosed are a random access contention resolution method, a user equipment and a base station, which are used for solving the problem that an Msg3 (comprising a BSR therein) is not successfully sent in a random access process but a UE considers that contention in the random access process is successfully resolved. The method in embodiments of the present invention comprises: a user equipment (UE) triggers a buffer status report (BSR) and triggers a random access process; when performing the random access process, the UE sends a message 3 (Msg3) carrying the BSR to a base station; the UE receives contention resolution signaling from the base station, the contention resolution signaling being contention resolution signaling sent by the base station after receiving the BSR; and the UE determines that contention resolution is completed after receiving the contention resolution signaling. The embodiments of the present invention also provide a user equipment and a base station. The embodiments of the present invention can solve the problem that an Msg3 (comprising a BSR therein) is not successfully sent in a random access process but a UE considers that contention in the random access process is successfully resolved.

Description

Random access competition solution, user equipment, and base station

Technical field

The present invention relates to the field of communications technologies, and in particular, to a random access contention resolution method, a user equipment, and a base station.

Background technique

In a Long Term Evolution (LTE) network, user equipment (UE) needs to obtain radio resources first, such as uplink cellular data and ProSeimity based Service data. ProSe data or data called terminal-to-device (D2D). The above radio resources include uplink cellular resources and close-range service resources. The UE may send a Buffer Status Report (BSR) to the base station, and the base station allocates corresponding resources to the UE after receiving the BSR. The above BSR includes a cellular BSR or a close-range service BSR. The UE may send a BSR to the base station by using a random access procedure. The specific random access procedure is: the UE first sends a message 1 (Msg1, Message1) to the base station, that is, a preamble sequence code Preamble; after receiving the Msg1, the base station sends the Msg2 to the UE. That is, the random access response (RAR), the UE sends the Msg3 to the base station, and carries the BSR in the Msg3. After receiving the Msg3, the base station sends the Msg4 to the UE, that is, the contention resolution information is resolved by the base station. After the BSR in Msg3, resources are allocated to the UE according to the BSR content.

After receiving the Msg3, the base station sends the uplink scheduling signaling through the physical layer downlink control channel (PDCCH, Physical Downlink Control Channel) as the contention resolution signaling, that is, Msg4, and the UE considers the base station after receiving the uplink scheduling signaling through the PDCCH. When Msg3 is correctly received, the contention resolution is considered successful and the random access process is terminated.

The UE determines whether the base station correctly receives the Msg3 according to whether the uplink scheduling is received on the PDCCH. However, in a possible case, the base station may receive the BSR reported by the UE before the random access procedure, and the base station may perform uplink scheduling (according to the previously reported BSR) even if the base station does not receive the Msg3. Then, after receiving the uplink scheduling signaling, the UE considers that the base station has received the Msg3, and considers that the contention resolution is successful and ends the random access procedure, but in fact the base station does not receive the Msg3, thereby causing the Msg3 (including the BSR therein) to fail. Successfully sent.

Summary of the invention

The embodiment of the present invention provides a random access competition solution, a user equipment, and a base station, which can solve the problem that the Msg3 (including the BSR) in the random access process is not successfully transmitted but the UE considers that the random access procedure is successfully solved.

In view of this, the first aspect of the present invention provides a random access competition solution, which may include:

The user equipment UE triggers a buffer status report BSR and triggers a random access procedure;

The UE sends a message M3g3 carrying the BSR to the base station when performing the random access procedure;

The UE receives the contention resolution signaling from the base station, where the contention resolution signaling is the contention resolution signaling sent by the base station after receiving the BSR;

After receiving the contention resolution signaling, the UE determines that the contention resolution is completed.

With reference to the first aspect of the present invention, in the first embodiment of the first aspect of the present invention, the method may include:

The BSR includes: a cellular BSR or a close-range service ProSe BSR.

With reference to the first embodiment of the first aspect of the present invention, the second embodiment of the first aspect of the present invention may include:

The contention resolution signaling includes: contention resolution signaling of a random access procedure triggered by a MAC layer of a medium access control layer.

With reference to the first aspect of the present invention, the first embodiment of the first aspect of the present invention, the second embodiment of the first aspect of the present invention, the third embodiment of the first aspect of the present invention may include:

The contention resolution signaling includes: a downlink MAC layer control element and a corresponding MAC layer sub-packet header, the MAC layer sub-packet header including: a logical channel identifier ID used as contention resolution signaling.

With reference to the first aspect of the present invention, the first embodiment of the first aspect of the present invention, the second embodiment of the first aspect of the present invention, the fourth embodiment of the first aspect of the present invention may include:

The contention resolution signaling includes: a MAC layer sub-packet header, and the MAC layer sub-packet header includes: a logical channel identifier ID used as contention resolution signaling.

With reference to the first aspect of the present invention, the first embodiment of the first aspect of the present invention, the second embodiment of the first aspect of the present invention, the fifth embodiment of the first aspect of the present invention may include:

The UE receives uplink scheduling signaling carried on a physical layer downlink control channel PDCCH from the base station.

With reference to the fifth embodiment of the first aspect of the present invention, the sixth embodiment of the first aspect of the present invention may include:

After the UE determines that the contention resolution is completed, the UE triggers the target BSR, and reports the target BSR on the uplink resource indicated by the uplink scheduling signaling, where the target BSR is a newly triggered BSR.

In view of this, the second aspect of the present invention provides a random access competition solution, which may include:

The base station receives the message Msg3 from the UE in the random access process of the user equipment UE, and the Msg3 carries a buffer status report BSR;

After receiving the Msg3, the base station sends contention resolution signaling to the UE, so that the UE determines that the contention resolution is completed by using the contention resolution signaling.

With reference to the second aspect of the present invention, in the first embodiment of the second aspect of the present invention, the method may include:

The BSR includes: a cellular BSR or a close-range service ProSe BSR.

With reference to the second aspect of the present invention, the first embodiment of the second aspect of the present invention, in the second embodiment of the second aspect of the present invention, may include:

The contention resolution signaling includes: a downlink medium access control layer MAC layer control element and a corresponding MAC layer sub-packet header, where the MAC layer sub-packet header includes: a logical channel identifier ID used as contention resolution signaling.

With reference to the second aspect of the present invention, the first embodiment of the second aspect of the present invention, in the third embodiment of the second aspect of the present invention, may include:

With reference to the second aspect of the present invention, the first embodiment of the second aspect of the present invention, in the fourth embodiment of the second aspect of the present invention, may include:

After receiving the Msg3, the base station sends uplink scheduling signaling carried on the physical layer downlink control channel PDCCH to the UE.

In view of this, the third aspect of the present invention provides a user equipment UE, which may include:

a first triggering unit, configured to trigger a buffer status report BSR, and trigger a random access process;

a first sending unit, configured to send a message carrying the BSR to the base station, Msg3, when performing a random access procedure;

a first receiving unit, configured to receive contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR;

And a determining unit, configured to determine that the contention resolution is completed after receiving the contention resolution signaling.

With reference to the third aspect of the present invention, in the first embodiment of the third aspect of the present invention, the method may include:

The BSR includes: a cellular BSR or a close-range service ProSe BSR.

With reference to the first embodiment of the third aspect of the present invention, the second embodiment of the third aspect of the present invention may include:

The contention resolution signaling includes: contention resolution signaling for a random access procedure triggered by a medium access control layer MAC layer.

With reference to the third aspect of the present invention, the first embodiment of the third aspect of the present invention, the second embodiment of the third aspect of the present invention, the third embodiment of the third aspect of the present invention may include:

With reference to the third aspect of the present invention, the first embodiment of the third aspect of the present invention, the second embodiment of the third aspect of the present invention, the fourth embodiment of the third aspect of the present invention may include:

With reference to the third aspect of the present invention, the first embodiment of the third aspect of the present invention, the second embodiment of the third aspect of the present invention, the fifth embodiment of the third aspect of the present invention may include:

With reference to the fifth embodiment of the third aspect of the present invention, the sixth embodiment of the third aspect of the present invention may include:

a second triggering unit, configured to trigger a target BSR after the UE determines that the contention resolution is completed, where the target BSR is a newly triggered BSR;

The reporting unit is configured to report the target BSR on the uplink resource indicated by the uplink scheduling signaling.

In view of this, the fourth aspect of the present invention provides a base station, which may include:

a second receiving unit, configured to receive, during the random access process of the user equipment UE, Message M3g3 of the UE, where the Msg3 carries a buffer status report BSR;

And a second sending unit, configured to send, after the receiving the Msg3, the contention resolution signaling to the UE, so that the UE determines that the contention resolution is completed by using the contention resolution signaling.

With reference to the fourth aspect of the present invention, in the first embodiment of the fourth aspect of the present invention, the method may include:

The BSR includes: a cellular BSR or a close-range service ProSe BSR.

With reference to the fourth aspect of the present invention, the first embodiment of the fourth aspect of the present invention, in the second embodiment of the fourth aspect of the present invention, may include:

With reference to the fourth aspect of the present invention, the first embodiment of the fourth aspect of the present invention, in the third embodiment of the fourth aspect of the present invention, may include:

With reference to the fourth aspect of the present invention, the first embodiment of the fourth aspect of the present invention, in the fourth embodiment of the fourth aspect of the present invention, may include:

After receiving the Msg3, the uplink scheduling signaling carried on the physical layer downlink control channel PDCCH is sent to the UE.

As can be seen from the foregoing technical solutions, the embodiment of the present invention has the following advantages: the UE triggers a random access procedure, and then reports the Msg3 carrying the BSR to the base station in the random access process, and then determines the contention resolution through the contention resolution signaling. carry out. After the base station only sends the contention resolution signaling after receiving the BSR, the UE can determine that the base station has successfully received the BSR after receiving the contention resolution signaling. Therefore, the problem that the Msg3 (including the BSR) in the random access process is not successfully transmitted but the UE considers that the random access procedure is successfully solved is solved.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying for creative labor.

1 is a schematic diagram of an embodiment of a random access competition solution according to an embodiment of the present invention;

2 is a schematic diagram of another embodiment of a random access competition solution according to an embodiment of the present invention;

3 is a schematic diagram of another embodiment of a random access competition solution according to an embodiment of the present invention;

4 is a schematic diagram of another embodiment of a random access competition solution according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another embodiment of a random access competition solution according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of another embodiment of a random access competition solution according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of an embodiment of a user equipment UE according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of another embodiment of a user equipment UE according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of an embodiment of a base station according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic diagram of an embodiment of a terminal according to an embodiment of the present invention.

detailed description

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

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without being used for Describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

Referring to FIG. 1, an embodiment of a random access contention resolution method in an embodiment of the present invention includes:

101. The user equipment UE triggers a buffer status report BSR, and triggers performing a random access procedure.

In this embodiment, before the data transmission is performed, the user equipment UE triggers a buffer status report BSR and triggers a random access procedure.

102. The UE sends a message carrying the BSR to the base station, Msg3, when performing the random access procedure;

When performing the random access procedure, the UE sends the BSR to the base station in the Msg3 of the random access procedure.

103. The UE receives the contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR.

The contention resolution signaling is a contention resolution signaling of a random access procedure triggered by the MAC layer.

After the base station receives the Msg3 carrying the BSR, the base station sends contention resolution signaling to the UE, and the UE receives the contention resolution signaling.

104. After receiving the contention resolution signaling, the UE determines that the contention resolution is completed.

After receiving the contention resolution signaling sent by the base station, the UE determines that the contention resolution is completed.

In this embodiment, the UE triggers the random access procedure, and then reports the BSR to the base station in the random access process, and then determines the contention completion by using the contention resolution signaling. After the base station only sends the contention resolution signaling after receiving the BSR, the UE can determine that the base station has successfully received the BSR after receiving the contention resolution signaling. Therefore, the problem that the Msg3 (including the BSR) in the random access process is not successfully transmitted but the UE considers that the random access procedure is successfully solved is solved.

It should be noted that the foregoing contention resolution signaling includes multiple forms, which are respectively described below:

1. Medium access control layer MAC layer signaling:

The above MAC layer signaling includes:

1. A downlink MAC layer control element and a corresponding MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier (ID) for use as a contention resolution signaling.

For the sake of understanding, the random access competition solution method in the embodiment of the present invention is described in detail below. Referring to FIG. 2, another embodiment of the random access competition solution method in the embodiment of the present invention includes:

201. The user equipment UE triggers a buffer status report BSR, and triggers a random access procedure.

In this embodiment, the user equipment UE triggers a buffer status report BSR before performing data transmission. Specifically, the BSR is triggered by the Medium Access Control (MAC) layer of the UE, and the random access procedure is triggered.

It should be noted that the foregoing BSR is in a triggered but not sent state, where the BSR includes a cellular BSR or a ProSe BSR, and includes other types of data, which is not limited herein.

202. The UE sends the Msg3 carrying the BSR to the base station when performing the random access procedure;

After receiving the random access response (RAR) sent by the base station, the UE sends the Msg3 to the base station, and carries the BSR in the Msg3.

203. The UE receives the contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR, where the contention resolution signaling includes: a downlink MAC layer control element and its corresponding a MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier ID for use as a contention resolution signaling;

After the base station receives the Msg3 carrying the BSR, the base station sends contention resolution signaling to the UE, and the UE receives the contention resolution signaling. The contention resolution signaling includes: a downlink MAC layer control element and a corresponding MAC layer sub-packet header, where the MAC layer sub-packet header includes: a logical channel identifier ID used as contention resolution signaling.

204. After receiving the contention resolution signaling, the UE determines that the contention resolution is complete.

After receiving the contention resolution signaling, the UE may determine that the contention resolution is successful, and determine that the random access procedure is successfully completed, because the base station sends the contention resolution signaling after receiving the Msg3.

In this embodiment, the UE triggers the random access procedure, and then reports the Msg3 carrying the BSR to the base station in the random access process, and then determines the contention completion by using the contention resolution signaling. After the base station only sends the contention resolution signaling after receiving the BSR, the UE can determine that the base station has successfully received the BSR after receiving the contention resolution signaling. Therefore, the problem that the Msg3 (including the BSR) in the random access process is not successfully transmitted but the UE considers that the random access procedure is successfully solved is solved.

Secondly, the present embodiment provides a contention resolution signaling, which is sent only after the base station successfully receives the Msg3, and provides a solution to the failure of the Msg3 (including the BSR) in the random access process. The method of transmitting but the UE considers that the random access procedure competes for a successful solution increases the selectivity of the scheme.

2. The MAC layer sub-packet header, the MAC layer sub-packet header includes: a logic used as a contention resolution signaling The channel identification ID.

For the sake of understanding, the random access competition resolution method in the embodiment of the present invention is described in detail below. Referring to FIG. 3, another embodiment of the random access competition solution method in the embodiment of the present invention includes:

301. The user equipment UE triggers a buffer status report BSR, and triggers performing a random access procedure.

In this embodiment, the user equipment UE triggers a buffer status report BSR before performing data transmission, specifically triggering a BSR through the MAC layer of the UE, and triggering a random access procedure.

302. The UE sends the Msg3 carrying the BSR to the base station when performing the random access procedure.

When the UE performs the random access procedure, after receiving the RAR sent by the base station, the UE sends the Msg3 to the base station, and carries the BSR in the Msg3.

303. The UE receives the contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR, where the contention resolution signaling includes: a MAC layer sub-packet header, the MAC layer The packet header includes: a logical channel identification ID used as contention resolution signaling;

After the base station receives the Msg3 carrying the BSR, the base station sends contention resolution signaling to the UE, and the UE receives the contention resolution signaling. The contention resolution signaling includes: a MAC layer sub-packet header, and the MAC layer sub-packet header includes: a logical channel identifier ID used as contention resolution signaling.

304. After receiving the contention resolution signaling, the UE determines that the contention resolution is complete.

Secondly, the embodiment further provides a contention resolution signaling, which is sent only after the base station successfully receives the Msg3, and provides a solution for the Msg3 (including the BSR) in the random access process. The party that successfully sent but the UE believes that the random access process is successful in solving the problem The law increases the selectivity of the scheme.

2. Uplink scheduling signaling carried on the PDCCH of the physical layer downlink control channel:

For the sake of understanding, the random access competition solution method in the embodiment of the present invention is described in detail below. Referring to FIG. 4, another embodiment of the random access competition solution method in the embodiment of the present invention includes:

401. The user equipment UE triggers a buffer status report BSR, and triggers performing a random access procedure.

402. The UE sends the Msg3 carrying the BSR to the base station when performing the random access procedure;

403. The UE receives uplink scheduling signaling carried on a physical layer downlink control channel PDCCH from the base station.

After the base station receives the Msg3 carrying the BSR, the base station sends contention resolution signaling to the UE, and the UE receives the contention resolution signaling. The contention resolution signaling includes: uplink scheduling signaling carried on the physical layer downlink control channel PDCCH.

404. After the UE determines that the contention resolution is complete, the UE triggers the target BSR, and reports the target BSR on the uplink resource indicated by the uplink scheduling signaling, where the target BSR is a newly triggered BSR.

After receiving the uplink scheduling signaling, the UE determines that the contention resolution is complete, and the UE triggers a new BSR, and reports the new BSR on the uplink resource indicated by the uplink scheduling signaling.

In this embodiment, after the UE determines that the contention resolution is completed, a new BSR is re-reported, which solves the problem that the BSR reporting failure caused by the base station may not be successfully received by the Msg3.

For ease of understanding, the random access competition solution method in the embodiment of the present invention is described in an actual application scenario:

User A makes a call to user B through the mobile phone. The mobile phone sends a BSR to the base station through a random access procedure. Specifically, the mobile phone sends a preamble sequence code Preamble to the base station. When the base station receives the Preamble, the mobile phone receives the random access response RAR sent by the base station. At the same time, the mobile phone sends Msg3 to the base station, and carries the BSR in the Msg3. When the base station receives the Msg3, the mobile phone receives the downlink competition sent by the base station. The signaling is resolved, wherein the downlink contention resolution signaling is a contention resolution signaling of a random access procedure triggered by the MAC layer. The specific form is a MAC layer sub-packet header, and the MAC layer sub-packet header includes a logical channel ID used for contention resolution signaling. When the mobile phone receives the downlink contention resolution signaling sent by the base station, it determines that the contention resolution is successful, and determines that the random connection is completed. Into the process. At the same time, the base station allocates resources for the mobile phone according to the BSR content.

The random access competition resolution method in the embodiment of the present invention is described above from the perspective of the user equipment UE. The random access competition resolution method in the embodiment of the present invention is described below from the perspective of the base station.

Referring to FIG. 5, an embodiment of a method for random access competition in the embodiment of the present invention includes:

501, the base station receives the Msg3 from the UE in the random access process of the user equipment UE, where the Msg3 carries a buffer status report BSR;

In this embodiment, when the UE performs the random access procedure, the base station receives the Msg3 sent by the UE, where the Msg3 carries the BSR.

502. After receiving the Msg3, the base station sends contention resolution signaling to the UE, so that the UE determines that the contention resolution is completed by using the contention resolution signaling.

After receiving the Msg3, the base station sends the contention resolution signaling to the UE, and after receiving the contention resolution signaling, the UE determines that the contention resolution is complete.

In this embodiment, after receiving the Msg3, the base station sends the contention resolution signaling to the UE, and the UE determines that the contention resolution is successful, so that the Msg3 (including the BSR) in the random access process cannot be successfully sent but The UE considers that the random access procedure competes for a successful solution.

For the sake of understanding, the random access competition resolution method in the embodiment of the present invention is described in detail below. Referring to FIG. 6, another embodiment of the random access competition solution method in the embodiment of the present invention includes:

601. The base station receives the Msg3 from the UE in the random access process of the user equipment UE, where the Msg3 carries a buffer status report BSR.

It should be noted that the BSR includes a cellular BSR or a ProSe BSR, and other types of data are also included, which are not limited herein.

602. After receiving the Msg3, the base station sends a contention resolution signaling to the UE, so that the The UE determines the contention resolution completion by using the contention resolution signaling, where the contention resolution signaling includes: a downlink medium access control layer MAC layer control element and a corresponding MAC layer sub-packet header, where the MAC layer sub-packet header includes: used as a contention resolution The logical channel identification ID of the signaling.

After the foregoing base station receives the Msg3, the UE sends the contention resolution signaling to the UE, and after receiving the contention resolution signaling, the UE determines that the contention resolution is complete, and the contention resolution signaling includes: a downlink medium access control layer MAC layer control element. And its corresponding MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier ID for use as contention resolution signaling.

It should be noted that the contention resolution signaling may further include: a MAC layer sub-packet header, where the MAC layer sub-packet header includes: a logical channel identifier ID used as contention resolution signaling.

It should be noted that the contention resolution signaling may further include: uplink scheduling signaling carried on the physical layer downlink control channel PDCCH. After the UE receives the uplink scheduling signaling and determines that the contention resolution is completed, the UE reports a new BSR on the uplink resource indicated by the uplink scheduling signaling, and the Msg3 (including the BSR) in the random access process can be resolved. The problem that the UE did not succeed in transmitting but the UE considered that the random access procedure was successfully resolved.

Secondly, the present embodiment provides three different contention resolution signalings, which can solve the problem that the Msg3 (including the BSR) in the random access process is not successfully transmitted but the UE considers that the random access procedure is successfully solved. Increased selectivity of the program.

The base station receives the preamble sequence Preamble sent by the mobile phone. After receiving the Preamble, the base station sends a random access response (RAR) to the mobile phone. When the mobile phone receives the RAR, the base station receives the Msg3 sent by the mobile phone, where the Msg3 carries the BSR, and the base station The mobile phone sends downlink contention resolution signaling, where the downlink contention resolution signaling is a contention resolution signaling of a random access procedure triggered by the MAC layer. The specific form is a MAC layer sub-packet header, and the MAC layer sub-packet header includes a logical channel ID used for contention resolution signaling. When the mobile phone receives the downlink contention resolution signaling sent by the base station, it determines that the contention resolution is successful, and determines that the random connection is completed. Into the process. At the same time, the base station allocates resources for the mobile phone according to the BSR content.

The following describes the user equipment UE in the embodiment of the present invention. Referring to FIG. 7, an embodiment of the user equipment UE in the embodiment of the present invention includes:

The first triggering unit 701 is configured to trigger a buffer status report BSR, and trigger a random access process to be performed;

The first sending unit 702 is configured to send, by the base station, the Msg3 carrying the BSR when performing the random access procedure;

The first receiving unit 703 is configured to receive contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR;

The determining unit 704 is configured to determine that the contention resolution is completed after receiving the contention resolution signaling.

For the sake of understanding, the user equipment UE in the embodiment of the present invention is described in detail below. Referring to FIG. 8, another embodiment of the user equipment UE in the embodiment of the present invention includes:

The first triggering unit 801 is configured to trigger a buffer status report BSR, and trigger a random access process to be performed;

The first sending unit 802 is configured to send, when performing a random access procedure, the Msg3 carrying the BSR to the base station;

The first receiving unit 803 is configured to receive the contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR, where the contention resolution signaling includes: a physical layer downlink control channel Uplink scheduling signaling carried on the PDCCH;

The determining unit 804 is configured to determine, after receiving the uplink scheduling signaling, that the contention resolution is completed.

a second triggering unit 805, configured to trigger a target BSR after the UE determines that the contention resolution is completed, where the target BSR is a newly triggered BSR;

The reporting unit 806 is configured to report the target BSR on the uplink resource indicated by the uplink scheduling signaling.

It should be noted that the contention resolution signaling further includes: a contention resolution signaling of a random access procedure triggered by a MAC layer; specifically: a downlink MAC layer control element and a corresponding MAC layer sub-packet header or a MAC layer sub-packet header, where The MAC layer sub-packet includes: a logical channel identification ID for use as contention resolution signaling.

Secondly, the present embodiment further provides two types of contention resolution signaling. The two types of contention resolution signaling are sent only after the base station successfully receives the Msg3, and do not need to re-report a new BSR. The method in which the Msg3 (including the BSR) in the incoming process is not successfully transmitted but the UE considers that the random access procedure is successfully solved is increased, and the selectivity of the scheme is increased.

For the sake of understanding, the interaction between the units of the user equipment UE in this embodiment is described in an actual application scenario:

Before the user equipment UE performs the data transmission, the first triggering unit 801 triggers the BSR through the MAC layer of the UE, and triggers a random access procedure, where the BSR is in a triggered but not sent state; when the UE performs the random access procedure After receiving the RAR sent by the base station, the first sending unit 802 sends the Msg3 to the base station, and carries the BSR in the Msg3. After the base station receives the Msg3 carrying the BSR, the base station sends a contention resolution message to the UE. Therefore, the UE receives the contention resolution signaling by using the first receiving unit 803. The contention resolution signaling includes: an uplink scheduling signaling carried on a physical layer downlink control channel PDCCH; after receiving the uplink scheduling signaling, the determining unit 804 determines that the contention resolution is completed, and the second triggering unit 805 triggers a new one. The BSR, the reporting unit 806 reports the new BSR on the uplink resource indicated by the uplink scheduling signaling. This solves the problem of BSR reporting failure caused by the base station may not successfully receive Msg3.

The following describes the base station in the embodiment of the present invention. Referring to FIG. 9, an embodiment of the base station in the embodiment of the present invention includes:

The second receiving unit 901 is configured to receive Msg3 from the UE in a random access process of the user equipment UE, where the Msg3 carries a buffer status report BSR;

The second sending unit 902 is configured to send a contention resolution message to the UE after receiving the Msg3. So, so that the UE determines that the contention resolution is completed by the contention resolution signaling.

It should be noted that the contention resolution signaling includes: a downlink MAC layer control element and a corresponding MAC layer sub-packet header, a MAC layer sub-packet header, or an uplink scheduling signaling carried on a physical layer downlink control channel PDCCH, where the MAC layer is configured. The header includes: a logical channel identification ID for use as a contention resolution signaling. The contention resolution signaling also includes other forms, which are not limited herein.

For ease of understanding, the interaction between the units of the base station in this embodiment is described in an actual application scenario:

When the UE performs the random access procedure, the second receiving unit 901 receives the Msg3 sent by the UE, where the Msg3 carries the BSR. After the foregoing base station receives the Msg3, the second sending unit 902 sends the contention resolution signaling to the UE, and after receiving the contention resolution signaling, the UE determines that the contention resolution is completed. The contention resolution signaling includes: a downlink MAC layer control element and a corresponding MAC layer sub-packet header, a MAC layer sub-packet header, or an uplink scheduling signaling carried on a physical layer downlink control channel PDCCH, where the MAC layer sub-packet header includes: The logical channel identification ID as the contention resolution signaling.

The following describes the terminal in the embodiment of the present invention. Referring to FIG. 10, an embodiment of the terminal in the embodiment of the present invention includes:

The embodiment of the present invention further provides a terminal. As shown in FIG. 10, for the convenience of description, only parts related to the embodiment of the present invention are shown. If the specific technical details are not disclosed, please refer to the method part of the embodiment of the present invention. The terminal may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the terminal is a mobile phone as an example:

FIG. 10 is a block diagram showing a partial structure of a mobile phone related to a terminal provided by an embodiment of the present invention. Referring to FIG. 10, the mobile phone includes: a radio frequency (RF) circuit 1010, a memory 1020, an input unit 1030, a display unit 1040, a sensor 1050, an audio circuit 1060, a wireless fidelity (WiFi) module 1070, and a processor 1080. And power supply 1090 and other components. It will be understood by those skilled in the art that the structure of the handset shown in FIG. 10 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.

The following describes the components of the mobile phone in detail with reference to FIG. 10:

The RF circuit 1010 can be used for receiving and transmitting signals during the transmission or reception of information or during a call. In particular, after receiving the downlink information of the base station, it is processed by the processor 1080. In addition, the uplink data is designed to be sent to the base station. Generally, RF circuit 1010 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuit 1010 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory 1020 can be used to store software programs and modules, and the processor 1080 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 1020. The memory 1020 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.). Moreover, memory 1020 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1030 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 1030 may include a touch panel 1031 and other input devices 1032. The touch panel 1031, also called a touch screen, can be used for collection. a touch operation on or near the user (such as a user using a finger, a stylus, or the like on the touch panel 1031 or in the vicinity of the touch panel 1031), and driving according to a preset program Connection device. Optionally, the touch panel 1031 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 1080 is provided and can receive commands from the processor 1080 and execute them. In addition, the touch panel 1031 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1031, the input unit 1030 may also include other input devices 1032. Specifically, other input devices 1032 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display unit 1040 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 1040 may include a display panel 1041. Alternatively, the display panel 1041 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Further, the touch panel 1031 may cover the display panel 1041, and when the touch panel 1031 detects a touch operation thereon or nearby, the touch panel 1031 transmits to the processor 1080 to determine the type of the touch event, and then the processor 1080 according to the touch event. The type provides a corresponding visual output on display panel 1041. Although the touch panel 1031 and the display panel 1041 are used as two independent components to implement the input and input functions of the mobile phone in FIG. 10, in some embodiments, the touch panel 1031 may be integrated with the display panel 1041. Realize the input and output functions of the phone.

The handset can also include at least one type of sensor 1050, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 1041 according to the brightness of the ambient light, and the proximity sensor may close the display panel 1041 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, I will not repeat them here.

An audio circuit 1060, a speaker 1061, and a microphone 1062 can provide an audio interface between the user and the handset. The audio circuit 1060 can transmit the converted electrical data of the received audio data to the speaker 1061, and convert it into a sound signal output by the speaker 1061; on the other hand, the microphone 1062 converts the collected sound signal into an electrical signal, by the audio circuit 1060. After receiving, it is converted into audio data, and then processed by the audio data output processor 1080, sent to the other mobile phone via the RF circuit 1010, or outputted to the memory 1020 for further processing.

WiFi is a short-range wireless transmission technology. The mobile phone through the WiFi module 1070 can help users to send and receive e-mail, browse the web and access streaming media, etc. It provides users with wireless broadband Internet access. Although FIG. 10 shows the WiFi module 1070, it can be understood that it does not belong to the essential configuration of the mobile phone, and may be omitted as needed within the scope of not changing the essence of the invention.

The processor 1080 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 1020, and invoking data stored in the memory 1020, The phone's various functions and processing data, so that the overall monitoring of the phone. Optionally, the processor 1080 may include one or more processing units; preferably, the processor 1080 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 1080.

The mobile phone also includes a power source 1090 (such as a battery) that supplies power to various components. Preferably, the power source can be logically coupled to the processor 1080 through a power management system to manage functions such as charging, discharging, and power management through the power management system.

Although not shown, the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.

In the embodiment of the present invention, the processor 1080 included in the terminal further has the following functions:

Trigger the buffer status to report the BSR and trigger the execution of the random access procedure;

When performing the random access procedure, sending a message Msg3 carrying the BSR to the base station;

Receiving contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR;

After receiving the contention resolution signaling, it is determined that the contention resolution is completed.

It will be apparent to those skilled in the art that the above description is convenient and concise for the description. For the specific working process of the system, the device and the unit, reference may be made to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform 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 mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or part of them The technical features are equivalent to those of the embodiments of the present invention.

Claims

A random access competition solution, characterized in that it comprises:

The user equipment UE triggers a buffer status report BSR and triggers a random access procedure;

The UE sends a message M3g3 carrying the BSR to the base station when performing the random access procedure;

The UE receives the contention resolution signaling from the base station, where the contention resolution signaling is the contention resolution signaling sent by the base station after receiving the BSR;

After receiving the contention resolution signaling, the UE determines that the contention resolution is completed.
The random access competition resolution method according to claim 1, wherein the BSR comprises: a cellular BSR or a proximity service ProSe BSR.
The random access competition resolution method according to claim 2, wherein the contention resolution signaling comprises:

The medium access control layer MAC layer triggers the contention resolution signaling of the random access procedure.
The random access competition resolution method according to any one of claims 1 to 3, wherein the contention resolution signaling comprises:

a downlink MAC layer control element and its corresponding MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier ID for use as contention resolution signaling.
The random access competition resolution method according to any one of claims 1 to 3, wherein the contention resolution signaling comprises:

A MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identification ID for use as contention resolution signaling.
The random access competition resolution method according to any one of claims 1 to 3, wherein the UE receiving the contention resolution signaling from the base station includes:

The UE receives uplink scheduling signaling carried on a physical layer downlink control channel PDCCH from the base station.
The random access competition resolution method according to claim 6, wherein the method further comprises:

After the UE determines that the contention resolution is completed, the UE triggers the target BSR, and reports the target BSR on the uplink resource indicated by the uplink scheduling signaling, where the target BSR is a newly triggered BSR.
A random access competition solution, characterized in that it comprises:

The base station receives the message Msg3 from the UE in the random access process of the user equipment UE, and the Msg3 carries a buffer status report BSR;

After receiving the Msg3, the base station sends contention resolution signaling to the UE, so that the UE determines that the contention resolution is completed by using the contention resolution signaling.
The random access contention resolution method according to claim 8, wherein the BSR comprises: a cellular BSR or a proximity service ProSe BSR.
The random access competition resolution method according to claim 8 or 9, wherein the contention resolution signaling comprises:

a downlink medium access control layer MAC layer control element and its corresponding MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier ID for use as contention resolution signaling.
The random access competition resolution method according to claim 8 or 9, wherein the contention resolution signaling comprises:

A MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identification ID for use as contention resolution signaling.
The random access competition resolution method according to claim 8 or 9, wherein the base station sends the contention resolution signaling to the UE after receiving the Msg3, including:

After receiving the Msg3, the base station sends uplink scheduling signaling carried on the physical layer downlink control channel PDCCH to the UE.
A user equipment (UE), comprising:

a first triggering unit, configured to trigger a buffer status report BSR, and trigger a random access process;

a first sending unit, configured to send a message carrying the BSR to the base station, Msg3, when performing a random access procedure;

a first receiving unit, configured to receive contention resolution signaling from the base station, where the contention resolution signaling is a contention resolution signaling sent by the base station after receiving the BSR;

And a determining unit, configured to determine that the contention resolution is completed after receiving the contention resolution signaling.
The user equipment UE according to claim 13, wherein the BSR comprises: a cellular BSR or a proximity service ProSe BSR.
The user equipment UE according to claim 14, wherein the contention resolution signaling comprises: contention resolution signaling for a random access procedure triggered by a medium access control layer MAC layer.
The user equipment UE according to any one of claims 13 to 15, wherein the contention resolution signaling comprises:

a downlink MAC layer control element and its corresponding MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier ID for use as contention resolution signaling.
The user equipment UE according to any one of claims 13 to 15, wherein the contention resolution signaling comprises:

A MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identification ID for use as contention resolution signaling.
The user equipment UE according to any one of claims 13 to 15, wherein the UE receiving the contention resolution signaling from the base station comprises:

The UE receives uplink scheduling signaling carried on a physical layer downlink control channel PDCCH from the base station.
The user equipment UE according to claim 18, wherein the user equipment UE further comprises:

a second triggering unit, configured to trigger a target BSR after the UE determines that the contention resolution is completed, where the target BSR is a newly triggered BSR;

The reporting unit is configured to report the target BSR on the uplink resource indicated by the uplink scheduling signaling.
A base station, comprising:

a second receiving unit, configured to receive a message Msg3 from the UE in a random access process of the user equipment UE, where the Msg3 carries a buffer status report BSR;

And a second sending unit, configured to send, after the receiving the Msg3, the contention resolution signaling to the UE, so that the UE determines that the contention resolution is completed by using the contention resolution signaling.
The base station according to claim 20, wherein the BSR comprises: a cellular BSR or a proximity service ProSe BSR.
The base station according to claim 20 or 21, wherein the contention resolution signaling comprises:

a downlink MAC layer control element and its corresponding MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identifier ID for use as contention resolution signaling.
The base station according to claim 20 or 21, wherein the contention resolution signaling comprises:

A MAC layer sub-packet header, the MAC layer sub-packet header comprising: a logical channel identification ID for use as contention resolution signaling.
The base station according to claim 20 or 21, wherein the transmitting the contention resolution signaling to the UE after receiving the Msg3 includes:

After receiving the Msg3, the uplink scheduling signaling carried on the physical layer downlink control channel PDCCH is sent to the UE.