CN110753403A

CN110753403A - DCI configuration and random access method, device, equipment and medium

Info

Publication number: CN110753403A
Application number: CN201810812927.3A
Authority: CN
Inventors: 韩星宇; 刘洋; 孙军帅; 王莹莹
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2020-02-04
Anticipated expiration: 2038-07-23
Also published as: CN110753403B

Abstract

The invention relates to the technical field of wireless transmission, and provides a DCI configuration method, a random access method, a device, equipment and a medium, wherein the DCI configuration method comprises the following steps: generating DCI carrying identification information indicating a plurality of preambles; and sending the DCI to the UE as a PDCCH order. The base station sends DCI serving as a PDCCH order to the UE, and the DCI carries identification information indicating a plurality of preambles, so that the UE can associate the plurality of preambles indicated by the DCI with a plurality of uplink beams, and then sends a plurality of msg.1 to the base station through PRACH resources corresponding to the uplink beams, thereby not only realizing multi-beam transmission of the plurality of msg.1, but also realizing autonomous selection of the uplink beams by the UE, and optimizing a random access flow.

Description

DCI configuration and random access method, device, equipment and medium

Technical Field

The present invention relates to the field of wireless transmission technologies, and in particular, to a DCI configuration method, a DCI random access method, a DCI configuration device, a DCI random access device, and a DCI configuration medium.

Background

In 5G (5th-Generation, fifth Generation wireless communication technology) NR (New Radio), a physical layer introduces a concept of a beam, which may be specifically divided into an uplink beam and a downlink beam. When performing Random access, a UE (user equipment) may transmit a message instruction based on a PRACH (Physical Random access channel) resource corresponding to an uplink beam.

In the prior art, a non-contention based random access procedure is shown in fig. 1:

the base station may send, to the UE, DCI (Downlink Control Information) serving as a PDCCH order, that is, msg.0, through a PDCCH (Physical Downlink Control Channel), where the DCI is used to instruct the base station to allocate a preamble (preamble) for the UE and to send a dedicated PRACH resource of the preamble, so that the UE sends msg.1 on the dedicated resource allocated by the base station, and after receiving the msg.1 sent by the UE, the base station may send a RAR (Random Access Response), that is, msg.2, to the UE, so that the Random Access process is successful.

When the base station sends the PDCCH order, the format corresponding to the DCI is DCI format1A, and the format includes a 6-bit Preamble Index field for indicating the ID information of the Preamble allocated by the base station to the UE and a 4-bit PRACH Mask Index field for indicating the dedicated PRACH resource allocated by the base station to the UE for sending the Preamble, so that the DCI format1A only supports allocating one Preamble to the UE, and the UE can only send one Preamble to the base station, so the UE cannot select for the uplink beam.

For this reason, in the latest development of 3GPP (3rd Generation Partnership Project) RAN1(Radio Access Network), before the end of the reception window of the RAR, the UE may send corresponding msg.1 through multiple uplink beams to optimize the random Access procedure.

However, DCI in the existing format only supports allocation of one preamble to the UE, which limits the base station to allocate multiple preambles to the UE. Therefore, how to implement that the DCI indicates the multiple preambles and enable the UE to transmit the message signaling on the PRACH corresponding to the multiple uplink beams to optimize the random access procedure is a problem that must be studied.

Disclosure of Invention

The invention discloses a DCI configuration method, a DCI random access device and a DCI random access medium, which aim to solve the problem that in the prior art, only one preamble is allocated to a DCI format1A, so that the random access flow is limited.

According to an aspect of the present invention, there is provided a DCI configuration method, the method including:

generating DCI carrying identification information indicating a plurality of preambles;

and sending the DCI to the UE as a PDCCH order.

As can be seen from the above description, the base station sends DCI serving as a PDCCH order to the UE, and the DCI carries identification information indicating multiple preambles, so that the UE can associate the multiple preambles indicated by the DCI with multiple uplink beams, and then send multiple msg.1 to the base station through PRACH resources corresponding to the uplink beams, thereby not only realizing multi-beam transmission of the multiple msg.1, but also realizing autonomous selection of the uplink beams by the UE, and optimizing a random access flow.

Specifically, the generating the DCI carrying the identification information indicating the plurality of preambles includes:

modifying the existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates the identification information of a plurality of preambles; or newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate identification information of multiple preambles.

That is to say, when the DCI carries identification information indicating multiple preambles, the existing Preamble Index field in the DCI may be modified, or the first indication field may be newly added to the DCI.

Specifically, the modifying is performed on the existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates that the identification information of multiple preambles includes:

and carrying group identification information of Preamble attribution grouping in the existing Preamble Index field in the DCI, wherein the grouping indicates at least two preambles.

Because there are 64 preambles, when the existing Preamble Index field is modified to implement that the DCI carries identification information indicating multiple preambles, the IDs of the 64 preambles can be grouped, so that the DCI can indicate multiple preambles by carrying the corresponding group identification information in the existing Preamble Index field, thereby achieving the effect of indicating multiple preambles by using the original bits.

The modifying the existing Preamble Index field in the DCI further includes:

and modifying the name of the existing Preamble Index field in the DCI into a Preamble Group Index.

That is to say, when multiple preambles are indicated by DCI through Group identification information carrying Preamble home packets, in order to distinguish between the existing Preamble Index field and the modified Preamble Index field, the name of the existing Preamble Index field in the DCI may be modified to be the Preamble Group Index.

Specifically, the method further comprises:

and newly adding a second indication field in the DCI, wherein the second indication field carries an indication mark, and the indication mark is used for indicating that the Preamble Index field carries the group identification information of the Preamble attribution grouping.

That is to say, when the DCI indicates multiple preambles by carrying the group identification information of the Preamble attribution packet, if a method for modifying the name of the existing Preamble Index field in the DCI is adopted, in order to further clarify the group identification information carried in the Preamble Index field and belonging to the Preamble attribution packet, a second indication field may be newly added to the DCI, where the second indication field carries an indication flag, and the indication flag is used to indicate that the group identification information carried in the Preamble Index field is the group identification information of the Preamble attribution packet.

Specifically, the newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate that the identification information of multiple preambles includes:

and carrying first ID information of an initial Preamble in an existing Preamble Index field in the DCI, and carrying second ID information of a cutoff Preamble in the first indication field.

That is to say, when the Preamble allocated by the base station to the UE is multiple consecutive preambles, in order to avoid that the field of the DCI is too long, and under the condition that the ID information of the Preamble carried in the DCI can be correctly indicated, the indication may be performed in a manner that the first ID information of the initial Preamble is carried in the existing Preamble Index field in the DCI, and the second ID information of the truncated Preamble is carried in the first indication field.

Specifically, the newly adding a first indication field in the DCI, so that the first indication field and the existing Preamble Index field in the DCI jointly indicate the identification information of multiple preambles further includes:

and carrying first ID information of a starting Preamble in an existing Preamble Index field in the DCI, and carrying quantity information indicating numerically continuous preambles starting from a numerical value corresponding to the first ID information in the first indication field.

When the Preamble allocated by the base station to the UE is a plurality of consecutive preambles, similarly, in order to avoid that the field of the DCI is too long, under the condition that the ID information of the Preamble carried in the DCI can be correctly indicated, the first ID information of the initial Preamble can be carried in the existing Preamble Index field in the DCI, and the first indication field carries information indicating the number of numerically consecutive preambles starting from the value corresponding to the first ID information.

and carrying ID information of a plurality of preambles in the existing Preamble Index field and the first indication field in the DCI.

That is to say, to implement that the DCI indicates multiple preambles, the ID information of each preamble may also be directly carried in the existing preamble index field and the first indication field in the DCI.

According to another aspect of the present invention, there is also provided a DCI configuration method, including:

receiving DCI which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preambles;

and determining a preamble allocated by the base station for the UE according to the DCI.

As can be seen from the above description, the UE receives DCI serving as a PDCCH order sent by the base station, and the DCI carries identification information of multiple preambles, so that the UE can associate the preambles indicated by the DCI with multiple uplink beams, and then send multiple msg.1 to the base station through the PRACH resource corresponding to the uplink beams, thereby not only achieving multi-beam transmission of multiple msg.1, but also achieving autonomous selection of the uplink beams by the UE, and optimizing a random access flow.

Specifically, if the group identifier information, which is carried in the Preamble Index field in the DCI and is a Preamble home packet, determines, according to the PDCCH order, that the Preamble allocated by the base station for the UE includes:

determining a packet corresponding to the Preamble allocated by the base station for the UE according to the group identification information of the Preamble attribution packet carried in the Preamble Index field; and determining each preamble corresponding to the group as the preamble allocated by the base station for the UE.

That is to say, when the group identification information carried in the Preamble Index field is a Preamble home group, the UE needs to determine a group corresponding to the group identification information, and then according to the pre-agreed group information, determine each Preamble corresponding to the group as a Preamble allocated by the base station for the UE. Therefore, when the indication mode is adopted, the effect that a plurality of preambles can be indicated by using the original bit can be achieved.

Specifically, if the first ID information of the initial Preamble is carried in the Preamble Index field in the DCI, and the second ID information of the cutoff Preamble is carried in the newly added first indication field in the DCI, the determining, according to the PDCCH order, the Preamble allocated by the base station for the UE includes:

and determining continuous preambles, the ID information of which is contained between the first ID information and the second ID information, as the preambles distributed by the base station for the UE according to the first ID information of the initial Preamble carried in the Preamble Index field and the second ID information of the ending Preamble carried in the first indication field.

That is to say, when the Preamble allocated by the base station to the UE is multiple continuous preambles, the UE may determine, as the Preamble allocated by the base station to the UE, the continuous preambles included between the first ID information and the second ID information by using the first ID information carrying the initial Preamble in the Preamble Index field and the second ID information carrying the cutoff Preamble in the first indication field.

Specifically, if the first ID information of the initial Preamble is carried in the Preamble Index field in the DCI, the number information of the numerically continuous preambles carried in the newly added first indication field in the DCI starting from the numerical value corresponding to the first ID information, and determining the Preamble allocated by the base station to the UE according to the PDCCH order includes:

according to the first ID information of the initial Preamble carried in the Preamble Index field and the numerical value information of numerically continuous preambles carried in the first indication field, starting from the numerical value corresponding to the first ID information, determining continuous preambles corresponding to the numerical value information starting from the first ID information as the preambles allocated by the base station for the UE.

Similarly, when the Preamble allocated by the base station to the UE is a plurality of consecutive preambles, the UE may determine, through the first ID information of the initial Preamble carried in the Preamble Index field and the numerical value carried in the first indication field, starting from the numerical value corresponding to the first ID information, the number information of the numerically consecutive preambles, starting from the first ID information, and the consecutive preambles corresponding to the number information, to be the Preamble allocated by the base station to the UE.

Specifically, if the Preamble Index field in the DCI and the ID information of multiple preambles carried in the first newly added indication field in the DCI, the determining, according to the PDCCH order, that the Preamble allocated by the base station for the UE includes:

and determining the Preamble corresponding to each ID information as the Preamble allocated by the base station for the UE according to the Preamble Index field and the ID information of the plurality of preambles carried in the first indication field.

That is to say, when the Preamble Index field and the ID information of the multiple preambles carried in the first indication field, the UE may directly determine the Preamble corresponding to each ID information as the Preamble allocated by the base station for the UE.

According to another aspect of the present invention, there is also provided a random access method based on the DCI configuration method described above, the method including:

sending DCI to UE as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preambles;

receiving a plurality of Msg.1 carrying identification information of corresponding preambles, which are sent by the UE from a plurality of uplink beams;

measuring the signal quality of the received Msg.1, determining a target Msg.1 with the best signal quality, carrying the identification information of preamble carried in the target Msg.1 in a Random Access Response (RAR), and sending the identification information to the UE.

Therefore, in the random access process, the base station sends the DCI serving as the PDCCH order to the UE, and the DCI carries the identification information indicating the plurality of preambles, so that the UE can associate the plurality of preambles indicated by the DCI with the plurality of uplink beams, and then sends the plurality of msg.1 to the base station through the PRACH resource corresponding to the uplink beams, thereby not only realizing multi-beam transmission of the plurality of msg.1, but also realizing autonomous selection of the uplink beams by the UE, and optimizing the random access flow.

determining uplink beams with the same number as the preambles indicated by the DCI, and sending Msg.1 carrying identification information corresponding to different preambles to a base station through each uplink beam;

and receiving a Random Access Response (RAR) sent by the base station, and determining a target uplink wave beam of random access according to the identification information of the preamble carried in the RAR.

Therefore, in the random access process, the UE receives DCI which is sent by the base station and serves as a PDCCH order, and the DCI carries identification information indicating a plurality of preambles, so that the UE can use the plurality of preambles indicated by the DCI to be associated with a plurality of uplink beams, and then sends a plurality of msg.1 to the base station through the PRACH resource corresponding to the uplink beams, so that not only is multi-beam transmission of the plurality of msg.1 realized, but also autonomous selection of the uplink beams by the UE is realized, and the random access flow is optimized.

In accordance with another aspect of the present invention, there is also provided a base station, including: a processor, a memory, and a transceiver;

the processor is configured to read a program in the memory, and generate DCI carrying identification information indicating a plurality of preambles;

and the transceiver is used for sending the DCI to the UE as the PDCCH order under the control of the processor.

Specifically, the processor is specifically configured to modify an existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates identification information of multiple preambles; or newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate identification information of multiple preambles.

Specifically, the processor is specifically configured to carry group identification information of a Preamble home packet in an existing Preamble Index field in the DCI, where a packet indicates at least two preambles.

Specifically, the processor is further configured to modify a name of an existing Preamble Index field in the DCI into a Preamble Group Index.

Specifically, the processor is further configured to add a second indication field in the DCI, where the second indication field carries an indication flag, and the indication flag is used to indicate that the Preamble Index field carries group identification information of a Preamble home packet.

Specifically, the processor is specifically configured to carry first ID information of an initial Preamble in an existing Preamble Index field in the DCI, and carry second ID information of a cutoff Preamble in the first indication field.

Specifically, the processor is specifically configured to carry first ID information of a starting Preamble in an existing Preamble Index field in the DCI, and carry quantity information indicating numerically consecutive preambles starting from a numerical value corresponding to the first ID information in the first indication field.

Specifically, the processor is specifically configured to carry ID information of multiple preambles in an existing Preamble Index field and the first indication field in the DCI.

According to another aspect of the present invention, there is also provided a terminal, including: a processor, a memory, and a transceiver;

the transceiver is configured to receive DCI serving as a PDCCH order sent by a base station under the control of the processor, where the DCI carries identification information indicating multiple preambles;

and the processor is used for reading the program in the memory and determining the preamble allocated by the base station to the UE according to the DCI.

Specifically, the processor is specifically configured to determine, according to the group identification information of the Preamble belonging packet carried in the Preamble Index field in the DCI, a packet corresponding to the Preamble allocated by the base station to the UE, if the group identification information of the Preamble belonging packet carried in the Preamble Index field in the DCI is the group identification information of the Preamble belonging packet; and determining each preamble corresponding to the group as the preamble allocated by the base station for the UE.

Specifically, the processor is specifically configured to determine, if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, and second ID information of an ending Preamble is carried in a first indication field newly added to the DCI, consecutive preambles, in which ID information is included between the first ID information and the second ID information, as preambles allocated to the UE by the base station according to the first ID information of the initial Preamble carried in the Preamble Index field and the second ID information of the ending Preamble carried in the first indication field.

Specifically, the processor is specifically configured to, if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, carry, in a first indication field newly added in the DCI, quantity information of numerically consecutive preambles starting from a numerical value corresponding to the first ID information; determining, according to the first ID information of the initial Preamble carried in the Preamble Index field, and the quantity information of numerically consecutive preambles carried in the first indication field starting from the value corresponding to the first ID information, a consecutive Preamble corresponding to the quantity information starting from the first ID information to be the Preamble allocated by the base station for the UE.

Specifically, the processor is specifically configured to determine, if the Preamble Index field in the DCI and the ID information of multiple preambles carried in the first indication field newly added to the DCI, a Preamble corresponding to each ID information as a Preamble allocated by the base station for the UE according to the Preamble Index field and the ID information of multiple preambles carried in the first indication field.

the processor is used for reading the program in the memory and executing the following processes: sending DCI to UE as a PDCCH order through the transceiver, wherein the DCI carries identification information indicating a plurality of preambles; receiving a plurality of Msg.1 carrying identification information of corresponding preambles, which are sent by the UE from a plurality of uplink beams; measuring the signal quality of the received Msg.1, determining a target Msg.1 with the best signal quality, carrying preamble identification information carried in the target Msg.1 in a Random Access Response (RAR), and sending the RAR to the UE;

the transceiver is used for receiving and transmitting data under the control of the processor.

the processor is used for reading the program in the memory and executing the following processes: receiving DCI (downlink control information) which is sent by a base station and serves as a PDCCH order through the transceiver, wherein the DCI carries identification information indicating a plurality of preambles; determining uplink beams with the same number as the preambles indicated by the DCI, and sending Msg.1 carrying identification information corresponding to different preambles to a base station through each uplink beam; receiving a Random Access Response (RAR) sent by the base station, and determining a target uplink wave beam of random access according to identification information of preamble carried in the RAR;

According to another aspect of the present invention, there is also provided a DCI configuration apparatus, including:

a generating module, configured to generate DCI carrying identification information indicating multiple preambles;

and the sending module is used for sending the DCI to the UE as the PDCCH order.

the receiving module is used for receiving DCI (downlink control information) which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preambles;

and the determining module is used for determining the preamble allocated by the base station for the UE according to the DCI.

In accordance with another aspect of the present invention, there is also provided a random access apparatus, including:

the first sending module is used for sending the DCI to the UE as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preambles;

the receiving module is used for receiving a plurality of Msg.1 carrying identification information of corresponding preambles, which are sent by the UE from a plurality of uplink beams;

and the second sending module is used for measuring the quality of the received signal of the msg.1, determining a target msg.1 with the best signal quality, carrying the identification information of the preamble carried in the target msg.1 in a Random Access Response (RAR) and sending the identification information to the UE.

the sending module is used for receiving DCI (downlink control information) which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preambles;

and the determining module is used for receiving a Random Access Response (RAR) sent by the base station and determining a target uplink wave beam of random access according to the identification information of the preamble carried in the RAR.

According to another aspect of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by an electronic device, the program, when run on the electronic device, causing the electronic device to perform the steps in the method for configuring DCI as described above.

According to another aspect of the present invention, there is also provided a computer readable storage medium storing a computer program executable by an electronic device, the program, when run on the electronic device, causing the electronic device to perform the steps in the random access method as described above.

The invention has the following beneficial effects:

the invention provides a DCI configuration method, a DCI random access device, a DCI random access equipment and a DCI random access medium, wherein the DCI random access method comprises the following steps: generating DCI carrying identification information indicating a plurality of preambles; and sending the DCI to the UE as a PDCCH order. In the invention, the base station sends DCI serving as PDCCH order to the UE, and the DCI carries identification information indicating a plurality of preambles, so that the UE can associate the plurality of preambles indicated by the DCI with a plurality of uplink beams, and then sends a plurality of msg.1 to the base station through PRACH resources corresponding to the uplink beams, thereby not only realizing multi-beam transmission of the plurality of msg.1, but also realizing autonomous selection of the uplink beams by the UE and optimizing the random access process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a diagram illustrating a non-contention based random access procedure in the prior art;

fig. 2 is a flowchart of a DCI configuration method according to a first embodiment of the present invention;

fig. 3 is a schematic diagram of a non-contention based random access procedure provided in a seventh embodiment of the present invention;

fig. 4 is a base station according to an eighth embodiment of the present invention;

fig. 5 is a terminal according to a ninth embodiment of the present invention;

fig. 6 is a base station according to a tenth embodiment of the present invention;

fig. 7 is a terminal according to an eleventh embodiment of the present invention;

fig. 8 is a block diagram illustrating a DCI configuration apparatus according to a twelfth embodiment of the present invention;

fig. 9 is a block diagram of a DCI configuration apparatus according to a thirteenth embodiment of the present invention;

fig. 10 is a block diagram of a random access apparatus according to a fourteenth embodiment of the present invention;

fig. 11 is a block diagram of a random access apparatus according to a fifteenth embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

under the scene of non-contention based random access triggered by using the PDCCH order, the DCIformat 1A of the existing format only supports allocation of one preamble, so that the UE can only send one preamble to the base station, and therefore the UE cannot select for an uplink beam.

In response to the specification of the latest progress of 3GPP RAN1, an embodiment of the present invention provides a DCI configuration method, as shown in fig. 2, the method includes the following steps:

step S201: generating DCI carrying identification information indicating a plurality of preambles.

Since the DCI format1A in the existing format includes a Preamble Index field (field) with 6 bits to indicate the ID information of the Preamble allocated by the base station to the UE, in the embodiment of the present invention, the generating DCI carrying the identification information indicating multiple preambles includes:

That is to say, when generating the DCI carrying the identification information indicating the plurality of preambles, the newly generated DCI may indicate the plurality of preambles for the UE by modifying the existing Preamble Index field in the DCI format1A or by adding a new indication field in the DCI format 1A. It is to be understood that, in the embodiment of the present invention, a manner of implementing that the DCI carries identification information indicating multiple preambles is not specifically limited. This will be described in detail below with reference to specific embodiments, and will not be described herein again.

It should be noted that the DCI may be set according to a predetermined agreement with the base station and the UE, or the base station may add identification information indicating the preamble to the DCI as needed.

Step S202: and sending the DCI to the UE as a PDCCH order.

As can be seen from the above, in the embodiment of the present invention, the base station may allocate a plurality of preambles for the UE, and indicate the plurality of preambles allocated by the base station for the UE by modifying the existing Preamble Index field in the DCI format1A or by adding an indication field in the DCI format1A, so that after the base station sends the DCI as the pdcchord to the UE, the UE may associate the plurality of preambles indicated by the DCI with the plurality of uplink beams, and then send the plurality of msg.1 to the base station through the PRACH resource corresponding to the uplink beams, which not only realizes multi-beam transmission of the plurality of msg.1, but also realizes autonomous selection of the uplink beams by the UE, and optimizes a random access flow.

For the UE, the method further comprises:

step S203: receiving DCI which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preambles.

Step S204: and determining a preamble allocated by the base station for the UE according to the DCI.

Because the base station sends the DCI to the UE as the PDCCH order, and the DCI carries the identification information indicating the plurality of preambles, after the UE receives the DCI, the UE can determine the preambles allocated by the base station for the UE according to the identification information indicating the plurality of preambles carried in the DCI. And then, selecting the uplink beams with the same number as the preambles allocated by the base station by self, associating the plurality of preambles indicated by the DCI with the plurality of uplink beams, and then sending a plurality of msg.1 to the base station through the PRACH resource corresponding to the uplink beams.

Since each msg.1 carries a corresponding preamble, compared with the prior art that the UE can only send one preamble to the base station, the DCI configuration method provided in the embodiments of the present invention can not only implement multi-beam transmission of multiple msg.1, but also implement autonomous selection of uplink beams by the UE, thereby achieving the purpose of optimizing the random access procedure.

Example two:

because there are 64 existing preambles, the preamble allocated by the base station to the UE may be a preamble with a continuous value corresponding to the ID information, or may be multiple preambles with mutually independent values corresponding to the ID information. In order to indicate the preambles allocated by the base station for the UE, 64 preambles may be grouped in advance, so that each group includes at least two preambles, and therefore, when indicating, only the existing preamble index field in the DCI format1A needs to carry the group identification information.

That is to say, in the embodiment of the present invention, the existing Preamble Index field in the DCI is modified, so that the modified Preamble Index field indicates that the identification information of multiple preambles includes:

Specifically, when the method is used to indicate the preamble identification information, the base station and the UE need to group the existing 64 preambles according to the predetermined number of preambles, allocate a corresponding group number to each group, and use the group number as the group identification information of each group.

When 64 preambles are grouped, a preset number of preambles can be divided into one group according to the ID information of 64 preambles in the order from small to large, for example, 4 preambles are one group, then when grouping is performed, the 64 preambles are divided into 16 groups according to the order of 1-4, 5-8 and 9-12, and so on, and the group numbers corresponding to each group are also sorted according to the order from small to large, that is, the group number corresponding to 1-4 is 1, the group number corresponding to 5-8 is 2, the group number corresponding to 9-12 is 3, and so on.

Of course, when grouping 64 preambles, a group may be randomly selected or a number of each group may be randomly assigned according to ID information of the 64-bit preambles. For example, preambles with ID information of 3, 7, and 9 are divided into a group, and the corresponding group number is assigned 2. Since the grouping mode has strong randomness, other grouping modes are not listed.

It should be noted that, when grouping 64 preambles, the base station may select a better way according to an actual situation or a convention with the UE, and in the embodiment of the present invention, the grouping way of the preambles is not specifically limited.

Specifically, when the group identification information, which is a Preamble home packet, is carried in a Preamble Index field included in the DCI, after the UE receives the DCI, the determining, according to the PDCCH order, that the Preamble allocated by the base station for the UE includes:

That is, when receiving the DCI sent by the base station, the UE determines each Preamble corresponding to the packet as a Preamble allocated to itself by the base station if the Preamble Index field carries a group number.

For example, the group number carried in the Preamble Index field is 5, and the ID information of each Preamble in the packet corresponding to the group number 5 is 7, 8, and 9, respectively, then the UE determines the Preamble with ID information of 7, 8, and 9 as the Preamble allocated by the base station.

Because the Preamble Index field is 6 bits, when the Preamble Index field carries the group identification information of the Preamble attribution packet, the effect that a plurality of preambles can be indicated by using the original bits can be achieved, and a plurality of continuous or independent preambles can be distributed to the UE according to the requirement or the agreement between the base station and the UE, so that the indication mode has more flexibility.

Example three:

on the basis of the above embodiment, when the group identification information carried in the Preamble Index field is a Preamble home packet, in order to avoid confusion with ID information carrying a Preamble in the Preamble Index field in the prior art and cause unclear indication, the name of the Preamble Index field may be modified.

Therefore, in the embodiment of the present invention, the modifying the existing Preamble Index field in the DCI further includes:

It should be noted that the length of the Preamble Group Index field may be the same as the length of the existing Preamble Index field, or may be a subset of the length of the existing Preamble Index field. It should be further noted that, in the embodiment of the present invention, the name and the length of the Preamble Group Index are not specifically limited, and are only defined with respect to the function of the field.

Specifically, when the group identification information carried in the Preamble Index field is a Preamble home packet, if the above-mentioned method of modifying the name of the Preamble Index field is adopted, in the embodiment of the present invention, the method further includes:

That is to say, in order to further clarify the group identification information of the Preamble belonging packet carried in the Preamble Index field, the group identification information may be identified by adding a second indication field in the DCI.

Specifically, an indication flag may be carried in the second indication field, for example, when the indication flag is set to 1, it indicates that the Preamble Index field carries the group identification information of the Preamble home packet.

Example four:

as can be seen from the above embodiment, the existing Preamble Index field in the DCI can already indicate ID information of one Preamble, so that to implement DCI, the base station can indicate multiple preambles allocated for the UE, and therefore, a continuous or independent multiple preambles can be allocated for the UE according to a requirement or an agreement between the base station and the UE by adding an indication field in the DCI.

Therefore, on the basis of the above embodiment, in the embodiment of the present invention, the newly adding a first indication field in the DCI, so that the first indication field and the existing Preamble Index field in the DCI jointly indicate the identification information of multiple preambles includes:

That is to say, when the Preamble allocated by the base station to the UE is multiple consecutive preambles, the indication may be performed in a manner that the existing Preamble Index field in the DCI carries the first ID information of the first Preamble in the consecutive preambles, and the newly added first indication field carries the second ID information of the last Preamble in the consecutive preambles.

At this time, when the UE receives the DCI, the determining, according to the PDCCH order, that the preamble allocated by the base station to the UE includes:

That is, if the ID information of the Preamble carried in the Preamble Index field is 2 and the ID information of the Preamble carried in the first indication field is 4, the UE determines the Preamble with ID information of 2, 3, and 4 as the Preamble allocated by the base station for itself.

When the indication mode is adopted to indicate the Preamble allocated by the base station for the UE, the total length of the Preamble Index field and the first indication field is 12 bits, so that a plurality of continuous preambles can be indicated through fewer bits.

Example five:

in order to implement that the DCI can indicate a plurality of consecutive preambles, on the basis of the foregoing embodiment, in an embodiment of the present invention, the newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate identification information of the plurality of preambles further includes:

That is to say, when the Preamble allocated by the base station to the UE is a plurality of consecutive preambles, in order to avoid that the field of the DCI is too long, and under the condition that the ID information of the Preamble carried in the DCI can be correctly indicated, the first ID information of the initial Preamble can be carried in the existing Preamble Index field in the DCI, and the first indication field carries information indicating the number of numerically consecutive preambles starting from the value corresponding to the first ID information.

That is, if the ID information of the initial Preamble carried in the Preamble Index field is 7, and the number information of numerically consecutive preambles carried in the second indication field, starting from 7, is 3. Then the UE determines the preambles with ID information of 7, 8, and 9 as the preambles allocated by the base station for itself.

Because the second indication field is only used for carrying the numerical value corresponding to the first ID information, and the numerical value is continuous preamble number information, the length of the second indication field may not exceed 6 bits at most, and the base station may specifically set the length of the second indication field according to actual requirements or agreement with the UE.

Therefore, when the preamble allocated by the base station for the UE is indicated by using the middle indication mode, the total length of the preamble index field and the second indication field does not exceed 12 bits, so that a plurality of continuous preambles can be indicated by fewer bits.

Example six:

when the Preamble allocated by the base station to the UE is multiple discontinuous preambles, on the basis of the above embodiment, in the embodiment of the present invention, the newly adding a first indication field in the DCI, so that the first indication field and the existing Preamble Index field in the DCI jointly indicate the identification information of the multiple preambles further includes:

That is to say, to indicate the Preamble allocated by the base station to the UE more clearly, the ID information of each Preamble may be carried in the existing Preamble Index field and the newly added first indication field in the DCI, that is, the ID information of each Preamble is listed one by one.

At this time, after the UE receives the DCI, the determining, according to the PDCCH order, that the preamble allocated by the base station to the UE includes:

That is, if the ID information of the Preamble carried in the Preamble Index field is 7 and the ID information of the Preamble carried in the first indication field is 9, the UE determines the Preamble with ID information of 7 and 9 as the Preamble allocated by the base station for itself.

Of course, it can be understood that the first indication field not only carries ID information of one preamble, but also carries ID information of multiple preambles according to actual requirements or agreement between the base station and the UE.

Because each field indicating the ID information of the Preamble is set to 6 bits, when the Preamble allocated by the base station for the UE is indicated by using the middle indication mode, the total length of the Preamble Index field and the first indication field may be 12 bits, or 18 bits, etc. In the embodiment of the present invention, the total length of the Preamble Index field and the first indication field is not specifically limited.

Example seven:

on the basis of the foregoing embodiments, in an embodiment of the present invention, there is provided a random access method, an access procedure of which is shown in fig. 3, and includes the following steps:

step S301: and the base station sends the DCI to the UE as the PDCCH order.

As can be seen from the above, by modifying the existing Preamble Index field in the DCI, or by newly adding the first indication field in the DCI, the DCI may carry identification information indicating multiple preambles, so that the DCI carries the identification information indicating multiple preambles.

Step S302: and the UE receives the DCI which is sent by the base station and is used as the PDCCH order.

Since the DCI carries the identification information indicating the plurality of preambles, in the random access process, after receiving the DCI sent by the base station, the UE may select the uplink beams with the same number of preambles as the DCI indicates, and associate each uplink beam with ID information of a different preamble, that is, step S303.

Step S303: and determining uplink beams with the same number as the preambles indicated by the DCI, and sending Msg.1 carrying identification information corresponding to different preambles to a base station through each uplink beam.

Step S304: and the base station receives a plurality of Msg.1 carrying the identification information of the corresponding preamble sent by the UE from the plurality of uplink beams.

Step S305: the base station measures the quality of the received signal of the msg.1, determines a target msg.1 with the best signal quality, carries the identification information of preamble carried in the target msg.1 in a Random Access Response (RAR), and sends the identification information to the UE.

The signal quality of each uplink beam can be indirectly reflected by measuring the signal quality of each msg.1, and therefore the target msg.1 with the best signal quality corresponds to the uplink beam with the best signal quality. Therefore, after the random access, in order to enable the UE and the base station to perform subsequent information transmission based on the best uplink beam, the base station carries the identifier information of the preamble carried in the target msg.1 with the best signal quality in the RAR and sends the identifier information to the UE.

Step S306: and the UE receives the RAR sent by the base station and determines a target uplink wave beam of random access according to the identification information of the preamble carried in the RAR.

Because the RAR carries the identification information of the preamble corresponding to the target msg.1 with the best signal quality, the base station can determine the target uplink beam accessed randomly after receiving the RAR, and perform subsequent information transmission with the base station based on the target uplink beam.

Therefore, in the embodiment of the present invention, in the random access process, the PDCCH order carrying the DCI and sent by the base station is received, and the DCI carries the identification information of the plurality of preambles, so that the UE can select the corresponding uplink beam according to the preamble indicated by the DCI, and send the plurality of random access requests carrying the preamble to the base station through the PRACH corresponding to each uplink beam, which not only improves the probability that the base station receives the preamble, but also enables the UE and the base station to perform late data transmission based on a better target PRACH, thereby further optimizing the random access flow.

As can be seen from the above, in the embodiment of the present invention, the selection of the uplink beam in the random access process is completely completed by the UE, the UE associates the plurality of preambles indicated by the DCI with the plurality of uplink beams, and then sends the plurality of msg.1 to the base station through the PRACH resource corresponding to the uplink beam, so that not only is multi-beam transmission of the plurality of msg.1 realized, but also the UE autonomously selects the uplink beam, and the random access process is optimized.

Example eight:

according to another aspect of the embodiments of the present invention, there is also provided a base station, as shown in fig. 4, the base station including: a processor 401, a memory 402, and a transceiver 403;

in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with one or more processors 401, represented by processor 401, and various circuits of memory 402, represented by memory 402, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The processor 401 is responsible for managing the bus architecture and general processing, and the memory 402 may store data used by the processor 401 in performing operations.

Alternatively, the processor 401 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

The processor 401 is configured to read a program in the memory 402, and generate DCI carrying identification information indicating a plurality of preambles;

the transceiver 403 is configured to send the DCI as a PDCCH order to a UE under the control of the processor 401.

Specifically, the processor 401 is specifically configured to modify an existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates identification information of multiple preambles; or newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate identification information of multiple preambles.

Specifically, the processor 401 is specifically configured to carry group identification information of a Preamble home packet in an existing Preamble Index field in the DCI, where a packet indicates at least two preambles.

Specifically, the processor 401 is further configured to modify the name of the existing Preamble Index field in the DCI into a Preamble Group Index.

Specifically, the processor 401 is further configured to add a second indication field in the DCI, where the second indication field carries an indication flag, and the indication flag is used to indicate that the Preamble Index field carries group identification information of a Preamble home packet.

Specifically, the processor 401 is specifically configured to carry first ID information of an initial Preamble in an existing Preamble Index field in the DCI, and carry second ID information of a cutoff Preamble in the first indication field.

Specifically, the processor 401 is specifically configured to carry first ID information of a starting Preamble in an existing Preamble Index field in the DCI, and carry quantity information indicating numerically consecutive preambles starting from a numerical value corresponding to the first ID information in the first indication field.

Specifically, the processor 401 is specifically configured to carry ID information of multiple preambles in an existing Preamble Index field and the first indication field in the DCI.

Example nine:

according to another aspect of the embodiments of the present invention, there is also provided a terminal, as shown in fig. 5, the terminal including: a processor 501, a memory 502, and a transceiver 503;

in fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors 501, represented by processor 501, and various circuits of memory 502, represented by memory 502, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The transceiver 503 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 501 is responsible for managing the bus architecture and general processing, and the memory 502 may store data used by the processor 501 in performing operations.

Alternatively, the processor 501 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

The transceiver 503 is configured to receive DCI serving as a pdcch order sent by a base station under the control of the processor 501, where the DCI carries identification information indicating multiple preambles;

the processor 501 is configured to read the program in the memory 502, and determine a preamble allocated by the base station for the UE according to the DCI.

Specifically, the processor 501 is specifically configured to determine, if the group identification information of the Preamble home packet carried in the Preamble Index field in the DCI is the group identification information of the Preamble home packet, a packet corresponding to the Preamble allocated by the base station to the UE according to the group identification information of the Preamble home packet carried in the Preamble Index field; and determining each preamble corresponding to the group as the preamble allocated by the base station for the UE.

Specifically, the processor 501 is specifically configured to determine, if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, and second ID information of an ending Preamble is carried in a first indication field newly added to the DCI, a continuous Preamble in which ID information is included between the first ID information and the second ID information according to the first ID information of the initial Preamble carried in the Preamble Index field and the second ID information of the ending Preamble carried in the first indication field, as a Preamble allocated to the UE by the base station.

Specifically, the processor 501 is specifically configured to, if the first ID information of the initial Preamble is carried in the Preamble Index field in the DCI, carry, in the first indication field newly added in the DCI, quantity information of numerically consecutive preambles starting from a numerical value corresponding to the first ID information; determining, according to the first ID information of the initial Preamble carried in the Preamble Index field, and the quantity information of numerically consecutive preambles carried in the first indication field starting from the value corresponding to the first ID information, a consecutive Preamble corresponding to the quantity information starting from the first ID information to be the Preamble allocated by the base station for the UE.

Specifically, the processor 501 is specifically configured to determine, if the Preamble Index field in the DCI and the ID information of multiple preambles carried in the first indication field newly added to the DCI, a Preamble corresponding to each ID information as the Preamble allocated by the base station for the UE according to the Preamble Index field and the ID information of multiple preambles carried in the first indication field.

Example ten:

according to another aspect of the embodiments of the present invention, there is also provided a base station, as shown in fig. 6, the base station including: a processor 601, a memory 602, and a transceiver 603;

in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors 601, represented by processor 601, and various circuits of memory 602, represented by memory 602, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The transceiver 603 may be a number of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations.

Alternatively, the processor 601 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

The processor 601 is configured to read the program in the memory 602, and execute the following processes: sending the DCI as a PDCCH order to the UE through the transceiver 603, wherein the DCI carries identification information indicating a plurality of preambles; receiving a plurality of Msg.1 carrying identification information of corresponding preambles, which are sent by the UE from a plurality of uplink beams; measuring the signal quality of the received Msg.1, determining a target Msg.1 with the best signal quality, carrying preamble identification information carried in the target Msg.1 in a Random Access Response (RAR), and sending the RAR to the UE;

the transceiver 603 is used for receiving and transmitting data under the control of the processor 601.

Example eleven:

according to another aspect of the embodiments of the present invention, there is also provided a terminal, as shown in fig. 7, the terminal including: a processor 701, a memory 702, and a transceiver 703;

in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors 701, represented by processor 701, and various circuits of memory 702, represented by memory 702, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The transceiver 703 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations.

Alternatively, the processor 701 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

The processor 701 is configured to read the program in the memory 702, and execute the following processes: receiving, by the transceiver 703, DCI serving as a PDCCH order sent by a base station, where the DCI carries identification information indicating a plurality of preambles; determining uplink beams with the same number as the preambles indicated by the DCI, and sending Msg.1 carrying identification information corresponding to different preambles to a base station through each uplink beam; receiving a Random Access Response (RAR) sent by the base station, and determining a target uplink wave beam of random access according to identification information of preamble carried in the RAR;

the transceiver 703 is used for receiving and transmitting data under the control of the processor 701.

Example twelve:

according to another aspect of the embodiments of the present invention, there is also provided a DCI configuration apparatus, as shown in fig. 8, the apparatus includes:

a generating module 801, configured to generate DCI carrying identification information indicating multiple preambles;

a sending module 802, configured to send the DCI as a PDCCH order to a UE.

Specifically, the generating module 801 is specifically configured to modify an existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates identification information of multiple preambles; or newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate identification information of multiple preambles.

Specifically, the generating module 801 is specifically configured to carry group identification information of a Preamble home packet in an existing Preamble Index field in the DCI, where a packet indicates at least two preambles.

Specifically, the generating module 801 is specifically configured to modify the name of the existing Preamble Index field in the DCI into a Preamble Group Index.

Specifically, the generating module 801 is further configured to add a second indication field in the DCI, where the second indication field carries an indication flag, and the indication flag is used to indicate that the Preamble Index field carries group identification information of a Preamble home packet.

Specifically, the generating module 801 is specifically configured to carry first ID information of an initial Preamble in an existing Preamble Index field in the DCI, and carry second ID information of a cutoff Preamble in the first indication field.

Specifically, the generating module 801 is specifically configured to carry first ID information of a starting Preamble in an existing Preamble Index field in the DCI, and carry quantity information indicating numerically consecutive preambles starting from a numerical value corresponding to the first ID information in the first indication field.

Specifically, the generating module 801 is specifically configured to carry ID information of multiple preambles in an existing Preamble Index field and the first indication field in the DCI.

Example thirteen:

according to another aspect of the embodiments of the present invention, there is also provided a DCI configuration apparatus, as shown in fig. 9, the apparatus includes:

a receiving module 901, configured to receive DCI serving as a PDCCH order sent by a base station, where the DCI carries identification information indicating multiple preambles;

a determining module 902, configured to determine, according to the DCI, a preamble allocated by the base station for the UE.

Specifically, the determining module 902 is specifically configured to determine, if the group identification information of the Preamble home packet carried in the Preamble Index field in the DCI is the group identification information of the Preamble home packet, a packet corresponding to the Preamble allocated by the base station to the UE according to the group identification information of the Preamble home packet carried in the Preamble Index field; and determining each preamble corresponding to the group as the preamble allocated by the base station for the UE.

Specifically, the determining module 902 is specifically configured to determine, if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, and quantity information of numerically consecutive preambles is carried in a newly added first indication field in the DCI starting from a value corresponding to the first ID information, a Preamble allocated to the UE by the base station from the first ID information according to the first ID information of the initial Preamble carried in the Preamble Index field and the quantity information of numerically consecutive preambles carried in the first indication field starting from the value corresponding to the first ID information.

Specifically, the determining module 902 is specifically configured to determine, if the Preamble Index field in the DCI and the ID information of multiple preambles carried in the first indication field newly added to the DCI, a Preamble corresponding to each ID information as the Preamble allocated by the base station for the UE according to the Preamble Index field and the ID information of multiple preambles carried in the first indication field.

Example fourteen:

according to another aspect of the embodiments of the present invention, there is also provided a random access apparatus, as shown in fig. 10, the apparatus including:

a first sending module 1001, configured to send DCI as a PDCCH order to a UE, where the DCI carries identification information indicating multiple preambles;

a receiving module 1002, configured to receive a plurality of msg.1 carrying identification information of a corresponding preamble, sent by the UE from a plurality of uplink beams;

a second sending module 1003, configured to measure the signal quality of the received msg.1, determine a target msg.1 with the best signal quality, and send to the UE, the identifier information of the preamble carried in the target msg.1, which is carried in a random access response RAR.

Example fifteen:

according to another aspect of the embodiments of the present invention, there is also provided a random access apparatus, as shown in fig. 11, the apparatus including:

a receiving module 1101, configured to receive DCI serving as a PDCCH order sent by a base station, where the DCI carries identification information indicating multiple preambles;

a sending module 1102, configured to receive DCI serving as a PDCCH order sent by a base station, where the DCI carries identification information indicating multiple preambles;

a determining module 1103, configured to receive a random access response RAR sent by the base station, and determine a target uplink beam for random access according to identifier information of a preamble carried in the RAR.

Example sixteen:

according to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by an electronic device, the program, when executed on the electronic device, causing the electronic device to perform the steps of the DCI configuration method described above:

and sending the DCI to the UE as a PDCCH order.

Specifically, the modifying the existing Preamble Index field in the DCI further includes:

Specifically, the method further comprises:

The computer readable storage medium in the above embodiments may be any available medium or data storage device that can be accessed by a processor in an electronic device, including but not limited to magnetic memory such as floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc., optical memory such as CDs, DVDs, BDs, HVDs, etc., and semiconductor memory such as ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs), etc.

Example seventeen:

according to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which is characterized by storing a computer program executable by an electronic device, and when the program is run on the electronic device, the program causes the electronic device to execute the steps in the DCI configuration method described above:

Example eighteen:

according to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which is characterized by storing a computer program executable by an electronic device, and when the program is run on the electronic device, the program causes the electronic device to execute the steps of the random access method:

Example nineteenth:

according to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by an electronic device, the program, when executed on the electronic device, causing the electronic device to perform the steps of the random access method described above:

For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.

It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely application embodiment, or an embodiment combining application and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for configuring Downlink Control Information (DCI), the method comprising:

generating DCI carrying identification information indicating a plurality of preamble codes;

and sending the DCI to the UE as a PDCCH order.

2. The method of claim 1, wherein the generating the DCI carrying identification information indicating a plurality of preambles comprises:

modifying the existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates the identification information of a plurality of preambles; or

And newly adding a first indication field in the DCI, so that the first indication field and the existing preamble index field in the DCI jointly indicate the identification information of a plurality of preambles.

3. The method of claim 2, wherein the modifying the existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates the identification information of a plurality of preambles comprises:

4. The method of claim 3, wherein the modifying the existing Preamble Index field in the DCI further comprises:

5. The method of claim 3, wherein the method further comprises:

6. The method of claim 2, wherein the newly adding a first indication field in the DCI, so that the first indication field and a Preamble Index field existing in the DCI jointly indicate identification information of a plurality of preambles comprises:

7. The method of claim 2, wherein the newly adding a first indication field in the DCI, so that the first indication field and a Preamble Index field existing in the DCI jointly indicate identification information of a plurality of preambles further comprises:

8. The method of claim 2, wherein the newly adding a first indication field in the DCI, so that the first indication field and a Preamble Index field existing in the DCI jointly indicate identification information of a plurality of preambles further comprises:

9. A method for configuring Downlink Control Information (DCI), the method comprising:

receiving DCI which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preamble codes;

10. The method of claim 9, wherein if group identity information carried in a Preamble Index field in the DCI is a Preamble home packet, the determining, according to the PDCCH order, a Preamble allocated by the base station for the UE comprises:

11. The method of claim 9, wherein if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, and second ID information of a cutoff Preamble is carried in a first newly added indication field in the DCI, the determining, according to the PDCCH order, a Preamble allocated by the base station for the UE includes:

12. The method of claim 9, wherein if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, and a first indication field newly added in the DCI carries information of a number of numerically consecutive preambles starting from a value corresponding to the first ID information, the determining, according to the PDCCH order, a Preamble allocated by the base station for the UE includes:

13. The method of claim 9, wherein if the Preamble Index field in the DCI and the ID information for multiple preambles carried in the newly added first indication field in the DCI, the determining, according to the PDCCHorder, the Preamble allocated by the base station for the UE includes:

14. A random access method based on the DCI configuration method according to any one of claims 1 to 8, the method comprising:

sending DCI (downlink control information) as a PDCCH order to UE (user equipment), wherein the DCI carries identification information indicating a plurality of preamble codes;

15. A random access method based on the DCI configuration method according to any one of claims 9 to 13, the method comprising:

receiving Downlink Control Information (DCI) which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preamble codes;

16. A base station, characterized in that the base station comprises: a processor, a memory, and a transceiver;

the processor is configured to read a program in the memory, and generate DCI carrying identification information indicating a plurality of preamble preambles;

17. The base station of claim 16, wherein the processor is specifically configured to modify an existing Preamble Index field in the DCI, so that the modified Preamble Index field indicates identification information of multiple preambles; or newly adding a first indication field in the DCI, so that the first indication field and an existing Preamble Index field in the DCI jointly indicate identification information of multiple preambles.

18. The base station of claim 17, wherein the processor is specifically configured to carry group identification information of a Preamble home packet in an existing Preamble Index field in the DCI, where a packet indicates at least two preambles.

19. The base station of claim 18, wherein the processor is further configured to modify a name of an existing Preamble Index field in the DCI into a Preamble Group Index.

20. The base station of claim 18, wherein the processor is further configured to add a second indication field in the DCI, where the second indication field carries an indication flag, and the indication flag is used to indicate that a preamble home packet carried in a preamble index field is group identity information of a preamble home packet.

21. The base station of claim 17, wherein the processor is specifically configured to carry first ID information of an initial Preamble in an existing Preamble Index field in the DCI, and carry second ID information of a cutoff Preamble in the first indication field.

22. The base station of claim 17, wherein the processor is specifically configured to carry first ID information of a starting Preamble in an existing Preamble Index field in the DCI, and carry information indicating a number of numerically consecutive preambles starting from a numerical value corresponding to the first ID information in the first indication field.

23. The base station of claim 17, wherein the processor is specifically configured to carry ID information of multiple preambles in an existing Preamble Index field and the first indication field in the DCI.

24. A terminal, characterized in that the terminal comprises: a processor, a memory, and a transceiver;

the transceiver is configured to receive downlink control information DCI serving as a PDCCH order sent by a base station under the control of the processor, where the DCI carries identification information indicating a plurality of preamble codes;

25. The terminal of claim 24, wherein the processor is specifically configured to determine, if the group identification information of the Preamble home packet carried in the Preamble Index field in the DCI is a group identification information of the Preamble home packet, a packet corresponding to the Preamble allocated by the base station to the UE according to the group identification information of the Preamble home packet carried in the Preamble Index field; and determining each preamble corresponding to the group as the preamble allocated by the base station for the UE.

26. The terminal of claim 24, wherein the processor is specifically configured to, if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, and second ID information of a cutoff Preamble is carried in a newly added first indication field in the DCI, determine, according to the first ID information of the initial Preamble carried in the Preamble Index field and the second ID information of the cutoff Preamble carried in the first indication field, that ID information is included in consecutive preambles between the first ID information and the second ID information to be the Preamble allocated by the base station for the UE.

27. The terminal of claim 24, wherein the processor is specifically configured to, if first ID information of an initial Preamble is carried in a Preamble Index field in the DCI, carry, in a newly added first indication field in the DCI, quantity information of numerically consecutive preambles starting from a numerical value corresponding to the first ID information; determining, according to the first ID information of the initial Preamble carried in the Preamble Index field, and the quantity information of numerically consecutive preambles carried in the first indication field starting from the value corresponding to the first ID information, a consecutive Preamble corresponding to the quantity information starting from the first ID information to be the Preamble allocated by the base station for the UE.

28. The terminal of claim 24, wherein the processor is specifically configured to, if the Preamble Index field in the DCI and the ID information of multiple preambles carried in the first newly added indication field in the DCI, determine, according to the Preamble Index field and the ID information of multiple preambles carried in the first indication field, a Preamble corresponding to each ID information as the Preamble allocated by the base station for the UE.

29. A base station, characterized in that the base station comprises: a processor, a memory, and a transceiver;

the processor is used for reading the program in the memory and executing the following processes: sending Downlink Control Information (DCI) to the UE as a PDCCH order through the transceiver, wherein the DCI carries identification information indicating a plurality of preamble preambles; receiving a plurality of Msg.1 carrying identification information of corresponding preambles, which are sent by the UE from a plurality of uplink beams; measuring the signal quality of the received Msg.1, determining a target Msg.1 with the best signal quality, carrying preamble identification information carried in the target Msg.1 in a Random Access Response (RAR), and sending the RAR to the UE;

30. A terminal, characterized in that the terminal comprises: a processor, a memory, and a transceiver;

the processor is used for reading the program in the memory and executing the following processes: receiving Downlink Control Information (DCI) which is sent by a base station and is used as a PDCCH order through the transceiver, wherein the DCI carries identification information indicating a plurality of preamble codes; determining uplink beams with the same number as the preambles indicated by the DCI, and sending Msg.1 carrying identification information corresponding to different preambles to a base station through each uplink beam; receiving a Random Access Response (RAR) sent by the base station, and determining a target uplink wave beam of random access according to identification information of preamble carried in the RAR;

31. A device for configuring downlink control information DCI, the device comprising:

a generating module, configured to generate DCI carrying identification information indicating a plurality of preamble preambles;

32. A device for configuring downlink control information DCI, the device comprising:

the receiving module is used for receiving DCI (downlink control information) which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preamble codes;

33. A random access apparatus, the apparatus comprising:

a first sending module, configured to send DCI as a PDCCH order to a UE, where the DCI carries identification information indicating a plurality of preamble preambles;

34. A random access apparatus, the apparatus comprising:

the receiving module is used for receiving downlink control information DCI which is sent by a base station and is used as a PDCCH order, wherein the DCI carries identification information indicating a plurality of preamble codes;

35. A computer-readable storage medium, characterized in that it stores a computer program executable by an electronic device, which program, when run on the electronic device, causes the electronic device to carry out the steps of the method according to any one of claims 1-8.

36. A computer-readable storage medium, characterized in that it stores a computer program executable by an electronic device, which program, when run on the electronic device, causes the electronic device to carry out the steps of the method of any of claims 9-13.

37. A computer-readable storage medium, having stored thereon a computer program executable by an electronic device, for causing the electronic device to perform the steps of the method of claim 14, when the program is run on the electronic device.

38. A computer-readable storage medium, having stored thereon a computer program executable by an electronic device, for causing the electronic device to perform the steps of the method of claim 15, when the program is run on the electronic device.