CN109219133B - Access processing method, user equipment and network equipment - Google Patents
Access processing method, user equipment and network equipment Download PDFInfo
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- CN109219133B CN109219133B CN201710524666.0A CN201710524666A CN109219133B CN 109219133 B CN109219133 B CN 109219133B CN 201710524666 A CN201710524666 A CN 201710524666A CN 109219133 B CN109219133 B CN 109219133B
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- 238000003672 processing method Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 claims abstract description 52
- 238000013475 authorization Methods 0.000 claims abstract description 42
- 230000000977 initiatory effect Effects 0.000 claims abstract description 4
- 230000004044 response Effects 0.000 claims description 13
- 230000004913 activation Effects 0.000 claims description 12
- 238000013468 resource allocation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 29
- 230000008569 process Effects 0.000 description 19
- 230000011664 signaling Effects 0.000 description 17
- 101100274486 Mus musculus Cited2 gene Proteins 0.000 description 12
- 101150096622 Smr2 gene Proteins 0.000 description 12
- 230000003993 interaction Effects 0.000 description 8
- 101100533725 Mus musculus Smr3a gene Proteins 0.000 description 5
- 101100396152 Arabidopsis thaliana IAA19 gene Proteins 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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Abstract
The invention discloses a data transmission method and a device, wherein the method comprises the following steps: initiating a random access request carrying random access preamble information to a network side; receiving uplink resource authorization information fed back by the network side; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment; and sending uplink data to a network side based on the uplink resource authorization information.
Description
Technical Field
The present invention relates to information transmission technologies in the field of communications, and in particular, to an access processing method, a user equipment, and a network device.
Background
In a conventional network, a user accesses to the network through a random access procedure and then initiates service transceiving. The purpose of the random access procedure is to complete the establishment of the user's context and thereby obtain authorization of the network (identity, resources, security, etc. assigned to the user by the network).
Conventional random access procedures. And the user completes the context application through a random process, and establishes a corresponding signaling transmission channel and a corresponding service channel through a subsequent repeated wireless link reconfiguration process. In future mobile networks, mctc and URLLC services are proposed, and a common feature of both these services is that the data packets are small, but the real-time requirements may be high or high. If conventional random access is still used, it causes a large delay (each time the header starts from Msg1, various signaling and traffic bearers are established), and the overhead is large (the actual data to be sent may be several bytes, or tens of bytes).
In the conventional random access process, the UE does not carry any valid data in the information of the random access process, obtains authorization of the network side only through the random access process, and establishes a dedicated channel for signaling and data transmission. The processing method, especially for small data packet burst service and high real-time service requirement proposed by future network, causes problems of large time delay and large signaling overhead in the conventional random access process.
Disclosure of Invention
The invention mainly aims to provide an access processing method, user equipment and network equipment, and aims to solve the problems in the prior art.
In order to achieve the above object, the present invention provides an access processing method, including:
initiating a random access request carrying random access preamble information to a network side;
receiving uplink resource authorization information fed back by the network side; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
based on the uplink resource authorization information, uplink data is sent to a network
The invention provides an access processing method, which is applied to network equipment, and comprises the following steps:
receiving a random access request carrying random access preamble information sent by user equipment;
feeding back uplink resource authorization information to the user equipment; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
and receiving uplink data sent by the user equipment based on the uplink resource authorization information.
The invention provides a user equipment, comprising:
a request sending unit, configured to initiate a random access request carrying random access preamble information to a network side;
an information receiving unit, configured to receive uplink resource grant information fed back by the network side; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
and the information sending unit is used for sending uplink data to the network side based on the uplink resource authorization information.
The invention provides a network device, comprising:
a request receiving unit, configured to receive a random access request carrying random access preamble information sent by a user equipment;
the resource allocation unit is used for feeding back uplink resource authorization information to the user equipment; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
and the information receiving unit is used for receiving the uplink data sent by the user equipment based on the uplink resource authorization information.
The access processing method, the user equipment and the network equipment provided by the invention can directly carry out the processing of the uplink data transmission of the random access through the resources distributed by the network side, thereby reducing the processing flows of the eNB and the MME side for executing the initialization of the UE information and the like, simplifying the processing of the random access, accelerating the random access process, improving the efficiency of the random access and reducing the signaling overhead.
Drawings
FIG. 1 is a schematic flow chart 1 of an access processing method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a processing architecture 1 according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a processing architecture according to an embodiment of the present invention 2;
fig. 4 is a schematic flow chart 2 of an access processing method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a user equipment composition structure according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a network device according to an embodiment of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
Embodiment 1,
The embodiment of the invention provides an access processing method, as shown in fig. 1, applied to user equipment, comprising the following steps:
step 101: initiating a random access request carrying random access preamble information to a network side;
step 102: receiving uplink resource authorization information fed back by the network side; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
step 103: and sending uplink data to a network side based on the uplink resource authorization information.
In 5G network, burst service type is proposed, the service data packet is very small, real-time performance is very high, and if the service data packet comes out according to normal flow, the problems of time extension and large signaling overhead are caused. If the conventional random access procedure is optimized for such terminal characteristics, the delay and signaling overhead can be reduced.
The transmission and reception flow is as shown in fig. 2, and the user transmits Uplink (UL) data to the network:
step 1. The UE sends Msg1 to carry a Preamble to initiate random access;
step2, after receiving the Preamble of the UE, the base station sends an uplink resource Grant (ul_grant) message Msg2 to the UE.
Step3, the UE sends an uplink data message Msg3 according to the UL-Grant of the base station;
specifically, generating a random access request based on the ue-specific preamble sequence in Step 1; alternatively, the random access request is generated using a common preamble sequence.
That is, the Preamble sequence Preamble may be used to configure a dedicated Preamble for the UE, or a common Preamble may be used. What Preamble to select needs to be defined in terms of network capacity. A dedicated Preamble may be configured for a particular private network. And after receiving the Preamble, the base station is used as a temporary identity of the UE.
For uplink grant of the base station to the UE in Step2, as many resources as possible are used to improve the robustness of the UE transmitting data result. The User Equipment (UE) side needs to be able to extract at least one of the following information from the uplink resource grant information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
and the user equipment can repeatedly send the uplink data times on the time-frequency resource.
The sending of the authorization information can be sent out through response information of random access, namely MSG2 information; in addition to the ul_grant, the entire Msg2 message includes at least the life cycle of the UE's identification Preamble and ul_grant, i.e., the number of times the UE repeatedly transmits data on the Grant resources (the number of times the Grant resources are repeatedly used).
For the data packet sent by the UE to the network in Step3, at least the Identity (Identity) allocated to the UE by the network side needs to be carried in addition to the data to be sent, where the Identity is used as a unique Identity of the UE within a certain range covered by the network, and the length should be whole bytes, such as 8 bits and 16 bits. The method further comprises the steps of: receiving identification information distributed by a network side for the user equipment; the identification information is used for representing identity information of the user equipment within a preset range.
After receiving the data, the network side adds the uplink data to be sent to the identification information of the user equipment based on the uplink resource authorization information, and then sends the uplink data to the network side. The UE sends the packet and the ID of the UE to a data processing center, such as a core network, or some designated protocol layer entity, over a Common Bearer (Common Bearer). When the network side correctly receives the data sent by the UE, the UE may also repeat sending because the maximum number of repeated sending times has not been reached, and the network side ensures that the resource is still used by the UE and discards the data received subsequently.
Referring also to fig. 2, the network sends packet (DL) data to the user: transmitting the packet data, directly from the common channel, without establishing context (context: including DRB, SRB, etc.) of the user: the network sends directly using Paging (Paging) or Msg 2;
when the network side transmits, besides the data to be transmitted, the network side needs to carry an identifier (Identity) allocated to the UE by the network side, where the ID is used as a unique identifier of the UE within a certain range of network coverage, and the length of the ID should be whole byte, for example 8 bits and 16 bits. The network side can also repeat the transmission for a plurality of times to ensure that the UE can correctly receive the repeated data, and the UE can discard the repeated data after receiving the repeated data.
In particular, the allocation of identities (identities) to UEs requires reliance on an initial activation operation for such terminals.
When the terminal is used for the first time, the terminal is manually operated to complete the interaction with the network side, and the process of the interaction is completed to register the UE on the network side. Through registration, the UE needs to obtain at least one of the following information configured by the network side:
1. an identification of the UE; 2. various cycle parameters of DTx (discontinuous transmission)/DRx (discontinuous reception); 3. if the Preamble is special, the special Preamble is configured. 4. The movable range of the UE can be configured to the UE in a cell list mode; the solution may support a small range of movement of the UE, or may be stationary, in order to use as short a UE identity as possible. 5. Key parameters of initial transmission or reception, such as initial transmission power, initial reception power, system bandwidth, and random access collision-avoidance back-off parameters. 6. The possible data packet formats and length sets include several data packet lengths and corresponding formats that are available. And the like.
In summary, all the prior static parameters required for the UE to rapidly grant random access data transmission and reception are completed through an initial activation operation.
Finally, it should be noted that, the scheme provided in this embodiment can be applied to all random access processing flows, and when the foregoing provided random access method for directly sending data fails (that is, when repeated sending of data still fails), the random access method provided in the prior art may be reused for random access processing, and a specific processing flow may refer to fig. 3. As can be seen from a comparison between fig. 2 and fig. 3, the simplified random access processing flow provided in this embodiment can reduce subsequent processing flows such as RRC establishment, and specifically, the scheme provided in this embodiment can obtain more parameter configurations when the UE is initialized, so that the processing flows such as UE information initialization performed by the eNB and MME sides can be reduced, and therefore, the random access processing can be simplified, the random access process can be accelerated, the random access efficiency can be improved, and the signaling overhead can be reduced.
It should also be noted that, this embodiment is particularly suitable for random access processing of packet data, because the packet data is more focused on time delay and more focused on timeliness, and therefore, the embodiment is applied to random access processing of packet data, and can more embody the processing efficiency of random access.
Embodiment II,
The embodiment of the invention provides an access processing method, as shown in fig. 4, applied to network equipment, comprising the following steps:
step 401: receiving a random access request carrying random access preamble information sent by user equipment;
step 402: feeding back uplink resource authorization information to the user equipment; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
step 403: and receiving uplink data sent by the user equipment based on the uplink resource authorization information.
In 5G network, burst service type is proposed, the service data packet is very small, real-time performance is very high, and if the service data packet comes out according to normal flow, the problems of time extension and large signaling overhead are caused. If the conventional random access procedure is optimized for such terminal characteristics, the delay and signaling overhead can be reduced.
The transmission and reception flow is as shown in fig. 2, and the user transmits Uplink (UL) data to the network:
step 1. The UE sends Msg1 to carry a Preamble to initiate random access;
step2, after receiving the Preamble of the UE, the base station sends an uplink resource Grant (ul_grant) message Msg2 to the UE.
Step3, the UE sends an uplink data message Msg3 according to the UL-Grant of the base station;
specifically, generating a random access request based on the ue-specific preamble sequence in Step 1; alternatively, the random access request is generated using a common preamble sequence.
That is, the Preamble sequence Preamble may be used to configure a dedicated Preamble for the UE, or a common Preamble may be used. What Preamble to select needs to be defined in terms of network capacity. A dedicated Preamble may be configured for a particular private network. And after receiving the Preamble, the base station is used as a temporary identity of the UE.
For uplink grant of the base station to the UE in Step2, as many resources as possible are used to improve the robustness of the UE transmitting data result. The User Equipment (UE) side needs to be able to extract at least one of the following information from the uplink resource grant information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
and the user equipment can repeatedly send the uplink data times on the time-frequency resource.
The sending of the authorization information can be sent out through response information of random access, namely MSG2 information; in addition to the ul_grant, the entire Msg2 message includes at least the life cycle of the UE's identification Preamble and ul_grant, i.e., the number of times the UE repeatedly transmits data on the Grant resources (the number of times the Grant resources are repeatedly used).
For the data packet sent by the UE to the network in Step3, at least the Identity (Identity) allocated to the UE by the network side needs to be carried in addition to the data to be sent, where the Identity is used as a unique Identity of the UE within a certain range covered by the network, and the length should be whole bytes, such as 8 bits and 16 bits. The method further comprises the steps of: receiving identification information distributed by a network side for the user equipment; the identification information is used for representing identity information of the user equipment within a preset range.
After receiving the data, the network side adds the uplink data to be sent to the identification information of the user equipment based on the uplink resource authorization information, and then sends the uplink data to the network side. The UE sends the packet and the ID of the UE to a data processing center, such as a core network, or some designated protocol layer entity, over a Common Bearer (Common Bearer). When the network side correctly receives the data sent by the UE, the UE may also repeat sending because the maximum number of repeated sending times has not been reached, and the network side ensures that the resource is still used by the UE and discards the data received subsequently.
Referring also to fig. 2, the network sends packet (DL) data to the user: transmitting the packet data, directly from the common channel, without establishing context (context: including DRB, SRB, etc.) of the user: the network sends directly using Paging (Paging) or Msg 2;
when the network side transmits, besides the data to be transmitted, the network side needs to carry an identifier (Identity) allocated to the UE by the network side, where the ID is used as a unique identifier of the UE within a certain range of network coverage, and the length of the ID should be whole byte, for example 8 bits and 16 bits. The network side can also repeat the transmission for a plurality of times to ensure that the UE can correctly receive the repeated data, and the UE can discard the repeated data after receiving the repeated data.
In particular, the allocation of identities (identities) to UEs requires reliance on an initial activation operation for such terminals.
When the terminal is used for the first time, the terminal is manually operated to complete the interaction with the network side, and the process of the interaction is completed to register the UE on the network side. Through registration, the UE needs to obtain at least one of the following information configured by the network side:
1. an identification of the UE; 2. various cycle parameters of DTx (discontinuous transmission)/DRx (discontinuous reception); 3. if the Preamble is special, the special Preamble is configured. 4. The movable range of the UE can be configured to the UE in a cell list mode; the solution may support a small range of movement of the UE, or may be stationary, in order to use as short a UE identity as possible. 5. Key parameters of initial transmission or reception, such as initial transmission power, initial reception power, system bandwidth, and random access collision-avoidance back-off parameters. 6. The possible data packet formats and length sets include several data packet lengths and corresponding formats that are available. And the like.
In summary, all the prior static parameters required for the UE to rapidly grant random access data transmission and reception are completed through an initial activation operation.
Finally, it should be noted that, the scheme provided in this embodiment can be applied to all random access processing flows, and when the foregoing provided random access method for directly sending data fails (that is, when repeated sending of data still fails), the random access method provided in the prior art may be reused for random access processing, and a specific processing flow may refer to fig. 3. As can be seen from a comparison between fig. 2 and fig. 3, the simplified random access processing flow provided in this embodiment can reduce subsequent processing flows such as RRC establishment, and specifically, the scheme provided in this embodiment can obtain more parameter configurations when the UE is initialized, so that the processing flows such as UE information initialization performed by the eNB and MME sides can be reduced, and therefore, the random access processing can be simplified, the random access process can be accelerated, the random access efficiency can be improved, and the signaling overhead can be reduced.
It should also be noted that, this embodiment is particularly suitable for random access processing of packet data, because the packet data is more focused on time delay and more focused on timeliness, and therefore, the embodiment is applied to random access processing of packet data, and can more embody the processing efficiency of random access.
Third embodiment,
The embodiment of the invention provides user equipment, which comprises the following steps as shown in fig. 5:
a request sending unit 51, configured to initiate a random access request carrying random access preamble information to a network side;
an information receiving unit 52, configured to receive uplink resource grant information fed back by the network side; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
an information sending unit 53, configured to send uplink data to the network side based on the uplink resource grant information.
In 5G network, burst service type is proposed, the service data packet is very small, real-time performance is very high, and if the service data packet comes out according to normal flow, the problems of time extension and large signaling overhead are caused. If the conventional random access procedure is optimized for such terminal characteristics, the delay and signaling overhead can be reduced.
The transmission and reception flow is as shown in fig. 2, and the user transmits Uplink (UL) data to the network:
step 1. The UE sends Msg1 to carry a Preamble to initiate random access;
step2, after receiving the Preamble of the UE, the base station sends an uplink resource Grant (ul_grant) message Msg2 to the UE.
Step3, the UE sends an uplink data message Msg3 according to the UL-Grant of the base station;
specifically, generating a random access request based on the ue-specific preamble sequence in Step 1; alternatively, the random access request is generated using a common preamble sequence.
That is, the Preamble sequence Preamble may be used to configure a dedicated Preamble for the UE, or a common Preamble may be used. What Preamble to select needs to be defined in terms of network capacity. A dedicated Preamble may be configured for a particular private network. And after receiving the Preamble, the base station is used as a temporary identity of the UE.
For uplink grant of the base station to the UE in Step2, as many resources as possible are used to improve the robustness of the UE transmitting data result. The User Equipment (UE) side needs to be able to extract at least one of the following information from the uplink resource grant information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
and the user equipment can repeatedly send the uplink data times on the time-frequency resource.
The sending of the authorization information can be sent out through response information of random access, namely MSG2 information; in addition to the ul_grant, the entire Msg2 message includes at least the life cycle of the UE's identification Preamble and ul_grant, i.e., the number of times the UE repeatedly transmits data on the Grant resources (the number of times the Grant resources are repeatedly used).
For the data packet sent by the UE to the network in Step3, at least the Identity (Identity) allocated to the UE by the network side needs to be carried in addition to the data to be sent, where the Identity is used as a unique Identity of the UE within a certain range covered by the network, and the length should be whole bytes, such as 8 bits and 16 bits. The user equipment further comprises:
a parameter obtaining unit 54, configured to receive identification information allocated to the user equipment by a network side; the identification information is used for representing identity information of the user equipment within a preset range.
Correspondingly, the information sending unit is configured to send the uplink data to the network side after the network side receives the data and adds the identification information of the ue to the uplink data to be sent based on the uplink resource grant information. The UE sends the packet and the ID of the UE to a data processing center, such as a core network, or some designated protocol layer entity, over a Common Bearer (Common Bearer). When the network side correctly receives the data sent by the UE, the UE may also repeat sending because the maximum number of repeated sending times has not been reached, and the network side ensures that the resource is still used by the UE and discards the data received subsequently.
Referring also to fig. 2, the network sends packet (DL) data to the user: transmitting the packet data, directly from the common channel, without establishing context (context: including DRB, SRB, etc.) of the user: the network sends directly using Paging (Paging) or Msg 2;
when the network side transmits, besides the data to be transmitted, the network side needs to carry an identifier (Identity) allocated to the UE by the network side, where the ID is used as a unique identifier of the UE within a certain range of network coverage, and the length of the ID should be whole byte, for example 8 bits and 16 bits. The network side can also repeat the transmission for a plurality of times to ensure that the UE can correctly receive the repeated data, and the UE can discard the repeated data after receiving the repeated data.
In particular, the allocation of identities (identities) to UEs requires reliance on an initial activation operation for such terminals.
When the terminal is used for the first time, the terminal is manually operated to complete the interaction with the network side, and the process of the interaction is completed to register the UE on the network side. Through registration, the UE needs to obtain at least one of the following information configured by the network side:
1. an identification of the UE; 2. various cycle parameters of DTx (discontinuous transmission)/DRx (discontinuous reception); 3. if the Preamble is special, the special Preamble is configured. 4. The movable range of the UE can be configured to the UE in a cell list mode; the solution may support a small range of movement of the UE, or may be stationary, in order to use as short a UE identity as possible. 5. Key parameters of initial transmission or reception, such as initial transmission power, initial reception power, system bandwidth, and random access collision-avoidance back-off parameters. 6. The possible data packet formats and length sets include several data packet lengths and corresponding formats that are available. And the like.
In summary, all the prior static parameters required for the UE to rapidly grant random access data transmission and reception are completed through an initial activation operation.
Finally, it should be noted that, the scheme provided in this embodiment can be applied to all random access processing flows, and when the foregoing provided random access method for directly sending data fails (that is, when repeated sending of data still fails), the random access method provided in the prior art may be reused for random access processing, and a specific processing flow may refer to fig. 3. As can be seen from a comparison between fig. 2 and fig. 3, the simplified random access processing flow provided in this embodiment can reduce subsequent processing flows such as RRC establishment, and specifically, the scheme provided in this embodiment can obtain more parameter configurations when the UE is initialized, so that the processing flows such as UE information initialization performed by the eNB and MME sides can be reduced, and therefore, the random access processing can be simplified, the random access process can be accelerated, the random access efficiency can be improved, and the signaling overhead can be reduced.
It should also be noted that, this embodiment is particularly suitable for random access processing of packet data, because the packet data is more focused on time delay and more focused on timeliness, and therefore, the embodiment is applied to random access processing of packet data, and can more embody the processing efficiency of random access.
Fourth embodiment,
An embodiment of the present invention provides a network device, as shown in fig. 6, including:
a request receiving unit 61, configured to receive a random access request carrying random access preamble information sent by a user equipment;
a resource allocation unit 62, configured to feed back uplink resource grant information to the ue; the uplink resource authorization information at least comprises time-frequency resources which can be used by user equipment;
and an information receiving unit 63, configured to receive uplink data sent by the ue based on the uplink resource grant information.
In 5G network, burst service type is proposed, the service data packet is very small, real-time performance is very high, and if the service data packet comes out according to normal flow, the problems of time extension and large signaling overhead are caused. If the conventional random access procedure is optimized for such terminal characteristics, the delay and signaling overhead can be reduced.
The transmission and reception flow is as shown in fig. 2, and the user transmits Uplink (UL) data to the network:
step 1. The UE sends Msg1 to carry a Preamble to initiate random access;
step2, after receiving the Preamble of the UE, the base station sends an uplink resource Grant (ul_grant) message Msg2 to the UE.
Step3, the UE sends an uplink data message Msg3 according to the UL-Grant of the base station;
specifically, generating a random access request based on the ue-specific preamble sequence in Step 1; alternatively, the random access request is generated using a common preamble sequence.
That is, the Preamble sequence Preamble may be used to configure a dedicated Preamble for the UE, or a common Preamble may be used. What Preamble to select needs to be defined in terms of network capacity. A dedicated Preamble may be configured for a particular private network. And after receiving the Preamble, the base station is used as a temporary identity of the UE.
For uplink grant of the base station to the UE in Step2, as many resources as possible are used to improve the robustness of the UE transmitting data result. The User Equipment (UE) side needs to be able to extract at least one of the following information from the uplink resource grant information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
and the user equipment can repeatedly send the uplink data times on the time-frequency resource.
The sending of the authorization information can be sent out through response information of random access, namely MSG2 information; in addition to the ul_grant, the entire Msg2 message includes at least the life cycle of the UE's identification Preamble and ul_grant, i.e., the number of times the UE repeatedly transmits data on the Grant resources (the number of times the Grant resources are repeatedly used).
For the data packet sent by the UE to the network in Step3, at least the Identity (Identity) allocated to the UE by the network side needs to be carried in addition to the data to be sent, where the Identity is used as a unique Identity of the UE within a certain range covered by the network, and the length should be whole bytes, such as 8 bits and 16 bits. The method further comprises the steps of: receiving identification information distributed by a network side for the user equipment; the identification information is used for representing identity information of the user equipment within a preset range.
After receiving the data, the network side adds the uplink data to be sent to the identification information of the user equipment based on the uplink resource authorization information, and then sends the uplink data to the network side. The UE sends the packet and the ID of the UE to a data processing center, such as a core network, or some designated protocol layer entity, over a Common Bearer (Common Bearer). When the network side correctly receives the data sent by the UE, the UE may also repeat sending because the maximum number of repeated sending times has not been reached, and the network side ensures that the resource is still used by the UE and discards the data received subsequently.
The network device further includes:
an information sending unit 64, configured to send downlink data to a user equipment through a paging message, or send downlink data to the user equipment through a random access response message.
Referring also to fig. 2, the network sends packet (DL) data to the user: transmitting the packet data, directly from the common channel, without establishing context (context: including DRB, SRB, etc.) of the user: the network sends directly using Paging (Paging) or Msg 2;
when the network side transmits, besides the data to be transmitted, the network side needs to carry an identifier (Identity) allocated to the UE by the network side, where the ID is used as a unique identifier of the UE within a certain range of network coverage, and the length of the ID should be whole byte, for example 8 bits and 16 bits. The network side can also repeat the transmission for a plurality of times to ensure that the UE can correctly receive the repeated data, and the UE can discard the repeated data after receiving the repeated data.
In particular, the allocation of identities (identities) to UEs requires reliance on an initial activation operation for such terminals.
When the terminal is used for the first time, the terminal is manually operated to complete the interaction with the network side, and the process of the interaction is completed to register the UE on the network side. Through registration, the UE needs to obtain at least one of the following information configured by the network side:
1. an identification of the UE; 2. various cycle parameters of DTx (discontinuous transmission)/DRx (discontinuous reception); 3. if the Preamble is special, the special Preamble is configured. 4. The movable range of the UE can be configured to the UE in a cell list mode; the solution may support a small range of movement of the UE, or may be stationary, in order to use as short a UE identity as possible. 5. Key parameters of initial transmission or reception, such as initial transmission power, initial reception power, system bandwidth, and random access collision-avoidance back-off parameters. 6. The possible data packet formats and length sets include several data packet lengths and corresponding formats that are available. And the like.
In summary, all the prior static parameters required for the UE to rapidly grant random access data transmission and reception are completed through an initial activation operation.
Finally, it should be noted that, the scheme provided in this embodiment can be applied to all random access processing flows, and when the foregoing provided random access method for directly sending data fails (that is, when repeated sending of data still fails), the random access method provided in the prior art may be reused for random access processing, and a specific processing flow may refer to fig. 3. As can be seen from a comparison between fig. 2 and fig. 3, the simplified random access processing flow provided in this embodiment can reduce subsequent processing flows such as RRC establishment, and specifically, the scheme provided in this embodiment can obtain more parameter configurations when the UE is initialized, so that the processing flows such as UE information initialization performed by the eNB and MME sides can be reduced, and therefore, the random access processing can be simplified, the random access process can be accelerated, the random access efficiency can be improved, and the signaling overhead can be reduced.
It should also be noted that, this embodiment is particularly suitable for random access processing of packet data, because the packet data is more focused on time delay and more focused on timeliness, and therefore, the embodiment is applied to random access processing of packet data, and can more embody the processing efficiency of random access.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, an apparatus, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. An access processing method applied to user equipment, the method comprising:
initiating a random access request carrying random access preamble information to a network side;
receiving uplink resource authorization information fed back by the network side through response information of random access; wherein, the uplink resource authorization information at least comprises at least one of the following information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
the times that the user equipment can repeatedly send uplink data on the time-frequency resource;
receiving identification information distributed by the network side for the user equipment; the identification information is used for representing identity information of the user equipment within a preset range; the identification information is distributed to the user equipment by the network side through initial activation operation;
and based on the uplink resource authorization information, adding the uplink data to be sent to the identification information of the user equipment, and then sending the uplink data to a network side through a public bearer.
2. The method according to claim 1, wherein the method further comprises:
generating a random access request based on the user equipment-specific preamble sequence;
or,
a random access request is generated using the common preamble sequence.
3. The method according to claim 1, wherein the method further comprises:
and receiving downlink data sent by the network side through the paging message, or receiving the downlink data sent by the network side through the random access response message.
4. An access processing method applied to a network device, the method comprising:
receiving a random access request carrying random access preamble information sent by user equipment;
feeding back uplink resource authorization information to the user equipment through response information of random access; wherein, the uplink resource authorization information at least comprises at least one of the following information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
the times that the user equipment can repeatedly send uplink data on the time-frequency resource;
based on the uplink resource authorization information, uplink data sent by the user equipment is received;
extracting the identification information of the user equipment from the uplink data, and sending the identification information of the user equipment and the uplink data to a data processing side for processing through a public bearer; the identification information is distributed to the user equipment by the network equipment through initial activation operation.
5. The method according to claim 4, wherein the method further comprises:
and sending downlink data to the user equipment through the paging message, or sending the downlink data to the user equipment through the random access response message.
6. A user device, the user device comprising:
a request sending unit, configured to initiate a random access request carrying random access preamble information to a network side;
the information receiving unit is used for receiving uplink resource authorization information fed back by the network side through response information of random access; wherein, the uplink resource authorization information at least comprises at least one of the following information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
the times that the user equipment can repeatedly send uplink data on the time-frequency resource;
a parameter obtaining unit, configured to receive identification information allocated to the user equipment by the network side; the identification information is used for representing identity information of the user equipment within a preset range; the identification information is distributed to the user equipment by the network side through initial activation operation;
and the information sending unit is used for adding the identification information of the user equipment to the uplink data to be sent based on the uplink resource authorization information and then sending the uplink data to a network side through a public bearer.
7. The user equipment according to claim 6, wherein the request transmitting unit is configured to generate a random access request based on a dedicated preamble sequence;
or,
a random access request is generated using the common preamble sequence.
8. The ue of claim 6, wherein the information receiving unit is configured to receive downlink data sent by the network side through a paging message, or receive downlink data sent by the network side through a random access response message.
9. A network device, comprising:
a request receiving unit, configured to receive a random access request carrying random access preamble information sent by a user equipment;
the resource allocation unit is used for feeding back uplink resource authorization information to the user equipment through response information of random access; wherein, the uplink resource authorization information at least comprises at least one of the following information:
position information of time-frequency resources allocated to the user equipment;
the use duration of the time-frequency resource allocated to the user equipment;
the times that the user equipment can repeatedly send uplink data on the time-frequency resource;
an information receiving unit, configured to receive uplink data sent by the user equipment based on the uplink resource grant information; extracting the identification information of the user equipment from the uplink data, and sending the identification information of the user equipment and the uplink data to a data processing side for processing through a public bearer; the identification information is distributed to the user equipment by the network equipment through initial activation operation.
10. The network device of claim 9, wherein the network device further comprises:
and the information sending unit is used for sending downlink data to the user equipment through the paging message or sending the downlink data to the user equipment through the random access response message.
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| EP4169340A4 (en) * | 2020-08-06 | 2024-03-27 | Nokia Technologies Oy | Enhanced paging procedure for random access or small data transmission |
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