JP7142757B2 - Connection establishment method and device - Google Patents

Description

The present invention relates to the field of communications, and more particularly to a connection establishment method and apparatus.

In the current Long Term Evolution (LTE) technology, the terminal selects one preamble resource from system information broadcast preamble resources as a flow in which the terminal transmits a connection establishment request by random access. and send it to the base station, the base station confirms that there is a terminal that needs to access after receiving the resource, and sends a random access response (RAR), which is required for the connection establishment request Information such as uplink resources, the Cell Radio Network Temporary Identifier (C-RNTI) used by the terminal, uplink time synchronization, etc. is sent to the terminal, and the terminal receives the RAR and then assigns the base station receives the connection establishment request, copies the request information, and sends the connection establishment request to the terminal by a contention resolution message (that is, the connection establishment request is copied). Send.

The current conflict resolution message is 48bits, so the connection establishment request is also limited to 48bits, which limits the expansion of the message content and cannot meet the connection establishment requirements of different network environments.

Embodiments of the present invention provide a connection establishment method and apparatus, which can be applied to fast connection establishment meeting different service requirements in multiple environments.

In a first aspect, providing a connection establishment method,
a terminal device establishing a connection establishment request format to be used when transmitting a connection establishment request message from a plurality of types of connection establishment request formats;
the terminal device transmitting a connection establishment request message to a network device according to the determined connection establishment request format;
including.

In a second aspect, providing a connection establishment method,
a network device receiving a connection establishment request message sent from the terminal equipment;
the network device sending a conflict resolution message to the terminal device according to the format of the connection establishment request message;
, wherein the format of the connection establishment request message is determined by the terminal device from a plurality of connection establishment request formats.

In the third aspect, providing terminal equipment,
a determination module configured to establish, from multiple types of connection establishment request formats, a connection establishment request format to be used when sending a connection establishment request message;
a sending module configured to send a connection establishment request message to a network device based on the determined connection establishment request format;
including.

Fourth, providing a network device;
a receiving module configured to receive a connection establishment request message sent from a terminal device;
a determination module configured to determine a conflict resolution message based on the format of the connection establishment request message;
a sending module configured to send the conflict resolution message to the terminal device;
, wherein the format of the connection establishment request message is determined by the terminal device from a plurality of connection establishment request formats.

Based on the above specific matters, the embodiments of the present invention provide a connection establishment method and apparatus, wherein a terminal device selects one from a plurality of connection establishment request formats to send a connection establishment request message. , which can be applied in multiple environments for fast connection establishment to meet different service requirements.

4 is a flowchart illustrating a connection establishment method according to an embodiment of the present invention; Fig. 4 is a flow chart showing a connection establishment method in one specific embodiment of the present invention; 4 is a flowchart illustrating a connection establishment method according to another embodiment of the present invention; 4 is a flow chart illustrating a method for setting the number of preamble sequences in a preamble group according to one specific embodiment of the present invention; 1 is a schematic block diagram of a terminal device according to an embodiment of the present invention; FIG. FIG. 4 is another schematic block diagram of a terminal device according to an embodiment of the present invention; FIG. 4 is yet another schematic block diagram of a terminal device according to an embodiment of the present invention; 4 is a schematic block diagram of a terminal device according to another embodiment of the present invention; FIG. 1 is a schematic block diagram of a network device according to an embodiment of the invention; FIG. FIG. 4 is a schematic block diagram of a network device according to another embodiment of the invention;

In order to more clearly describe the embodiments of the present invention, the above briefly describes the drawings required in the description of the embodiments or the prior art, and clearly, the drawings described above are merely for the purposes of the present invention. , and other drawings can be obtained based on these drawings for those skilled in the art without creative effort.

In the following, the drawings of the embodiments of the present invention are combined to clearly and comprehensively describe the technical solutions of the embodiments of the present invention. and not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of the present invention.

In addition, the technical solutions according to the embodiments of the present invention can be applied to various communication systems, such as a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, and an LTE Time Division Duplex system. It can be applied to a time division duplex (TDD) system, a universal mobile telecommunication system (UMTS), a future 5G communication system, and the like.

In addition, in the embodiments of the present invention, terminal equipment may refer to user equipment, mobile station (MS), mobile terminal, etc., and the user equipment may be a radio access network. (RAN: Radio Access Network), for example, the user equipment may be a mobile phone (also called a "cellular phone"), a computer with a mobile terminal, etc. For example, portable, compact, handheld, computer-embedded or in-vehicle mobile devices, and terminal equipment in future 5G networks or terminal equipment in future evolution PLMN networks, etc. .

In addition, in the embodiment of the present invention, the network device may be a device for communicating with terminal equipment, and the network device may be a base station (BTS: Base Transceiver Station) in the GSM system or CDMA. It may be a base station (NB: NodeB) in a WCDMA system, or an evolved base station (Evolutional Node B, abbreviated as "eNB" or "eNodeB") in an LTE system, or the network The devices may be relay stations, access points, in-vehicle devices, wearable devices and network side devices in future 5G networks, or network devices in future evolution PLMN networks, and so on.

FIG. 1 is a flowchart illustrating a connection establishment method according to an embodiment of the present invention, and as shown in FIG. 1, method 100 includes S110-S120.

At S110, the terminal device establishes a connection establishment request format to be used when transmitting a connection establishment request message from among multiple types of connection establishment request formats.

At S120, the terminal device transmits a connection establishment request message to the network device according to the determined connection establishment request format.

Therefore, according to the connection establishment method in the embodiment of the present invention, the terminal device can select one from a plurality of connection establishment request formats to transmit the connection establishment request message, so that different It can be applied to fast connection establishment to meet service requirements.

Alternatively, the plurality of types of connection establishment request formats may be defined by convention, or may be prearranged between the terminal device and the network device. is not limited to a specific format of

Optionally, at S110, the terminal equipment establishes a connection establishment request format to be used when sending the connection establishment request message based on at least one parameter of service requirements, capability requirements and network conditions.

Specifically, the terminal equipment selects the connection establishment request format to be used according to its own service requirements, for example, the terminal equipment selects a connection establishment request format when performing a voice service (VoLTE: Voice over LTE). , when performing VoLTE video service, use a different connection establishment request format than when performing VoLTE voice service, and when performing delay-insensitive service, use the same connection establishment request format as when performing direct communication service between terminals. can be used.

The terminal equipment can also select the connection establishment request format to be used based on its own capability requirements, e.g., when the terminal is a normal smart terminal equipment, Machine type Communication (MTC ) terminals or Vehicle to Vehicle communication type (V2V) terminals may use different connection establishment request formats. If the terminal device can only support one type of connection establishment request format, the same connection establishment request format may be used for different services. If so, it is possible to select different connection establishment request formats for different services.

In addition, the terminal equipment may refer to the network conditions when selecting the connection establishment request format. Choose a different connection establishment request format for the service.

In an embodiment of the present invention, optionally, the terminal device can determine whether the network device supports multiple formats of connection establishment request messages, and the network device supports multiple formats of connection establishment request messages. Establishing a connection establishment request format to be used when sending a connection establishment request message from a plurality of types of connection establishment request formats when it is determined to support the message.

Optionally, the terminal equipment receives the network condition indication information sent by the network device, and based on the received network condition indication information, whether the network device supports multiple formats of connection establishment request messages. confirm. Specifically, the terminal equipment can receive a broadcast message sent by a network device, the broadcast message includes network condition indication information, and the network condition indication information is used by the network device to establish multiple types of connection establishment requests. indicates whether the format can be supported, or the terminal equipment can receive an RRC connection establishment release message for the previous Radio Resource Control (RRC) sent by the network device; The RRC connection establishment release message includes the network condition indication information, or the terminal equipment can receive terminal-specific signaling sent by a network device, and the terminal-specific signaling includes the network condition indication information. For example, after the terminal equipment has reported terminal capabilities to the network device, the network device may receive terminal-specific signaling sent in response to the reported terminal capability message, the terminal-specific signaling being transmitted to the network. The condition-indicating information may be included, or the terminal equipment receives the paging message sent by the network device, and the paging message includes the network condition-indicating information.

Alternatively, as an example, the terminal equipment can receive random access resources sent by the network device, and based on the received random access resources, the network device supports multiple formats of connection establishment request messages. Determine whether or not to For example, if the received random access resource of the terminal device is a new preamble group, it can be called PreambleGroupC or PreambleGroupD (different from the existing PreambleGroupA and PreambleGroupB). It is generally assumed that the network device supports multiple formats of connection establishment request messages, otherwise, it is assumed that the network device can only support one format of connection establishment request messages.

Optionally, the random access resource is a preamble group, and optionally, the root sequence of the preamble sequence of the preamble group is different from the root sequence of the preamble sequence of preamble group A (PreambleGroupA), and the preamble sequence of said preamble group is different. The root sequence is different from the root sequence of the preamble sequences of Preamble Group B (PreambleGroupB), in other words, the new PreambleGroup uses a different root sequence to distinguish between PreambleGroupA and PreambleGroupB.

Or, the position of time-frequency resources occupied by the preamble group is different from that of preamble group A, and the position of time-frequency resources occupied by the preamble group is different from that of preamble group B, in other words, the new PreambleGroup has a different time. It is possible to distinguish between PreambleGroupA and PreambleGroupB using the transmission position of the frequency resource. The network device can indicate the position of the time-frequency resources occupied by the new preamble group by sending an indication message to the terminal equipment, and the network device further indicates the position of the time-frequency resources occupied by the new preamble group with the terminal equipment. can be negotiated and there is no limit to this in the present invention.

In an embodiment of the present invention, the connection establishment request message sent by the terminal equipment optionally contains an identifier ID of the terminal equipment and/or a connection establishment cause and/or a Non-Access Stratum (NAS) Stratum) and/or security keys.

In an embodiment of the present invention, optionally, for the network device to allocate uplink resources to the terminal equipment based on the terminal capability indication message, the terminal equipment may optionally instruct the network device to perform the above indicated in the terminal capability indication message. Send a connection establishment request format that the terminal device can support.

Further, the terminal device transmits a terminal capability indication message to a mobility management entity (MME) so that the MME configures the network device based on the terminal capability indication message. do.

FIG. 2 is a flowchart illustrating a connection establishment method according to one specific embodiment of the present invention, as shown in FIG. 2, the method 200 includes S201-S207.

At S201, a terminal device receives a broadcast message sent by a network device.

The broadcast message may contain an indication message or preamble configuration information indicating network conditions.

At S202, the terminal device reports capabilities to the network device.

The terminal equipment can send a terminal capability indication message to the network device, indicating whether it supports multiple types of connection establishment request formats and the connection establishment request formats it supports.

At S203, the network device transmits terminal-specific signaling to the terminal equipment.

The terminal-specific signaling may include an indication message or preamble configuration information indicating whether the network device supports multiple types of connection establishment request formats.

At S204, the terminal device transmits a preamble to the network device.

At S205, the network device sends a Random Access Response (RAR) message to the terminal device.

At S206, the terminal device sends a connection establishment request message to the network device.

At S207, the network device sends a connection establishment completion message to the terminal device.

Therefore, the connection establishment method and the terminal device according to the embodiment of the present invention can select one from a plurality of types of connection establishment request formats and transmit the connection establishment request message. It can be applied to fast connection establishment meeting different service requirements in multiple environments.

1 and 2 are combined to describe in detail the connection establishment method according to the embodiment of the present invention from the terminal device side, and in the following, FIG. 3 and FIG. The connection establishment method according to another embodiment of the present invention will be described in detail, and the interaction and correlation characteristics and functions between the network device and the terminal equipment in the description on the terminal device side correspond to the description on the network device side. For the sake of conciseness and brevity, we omit duplicated parts.

FIG. 3 is a flowchart illustrating a connection establishment method according to another embodiment of the present invention, and as shown in FIG. 3, method 300 includes S310-S320.

At S310, the network device receives a connection establishment request message sent from a terminal device, and the format of the connection establishment request message is determined from a plurality of connection establishment request formats by the terminal device.

At S320, the network device sends a conflict resolution message to the terminal device according to the format of the connection establishment request message.

Therefore, in the connection establishment method of the embodiment of the present invention, the network device receives the connection establishment request message sent according to the connection establishment request format determined by the terminal equipment, and according to the format of the connection establishment request message, , send a conflict resolution message to the terminal equipment. This makes it applicable to fast connection establishment meeting different service requirements in multiple environments.

In an embodiment of the present invention, the connection establishment request message optionally contains an identifier ID of the terminal equipment and/or a connection establishment cause and/or a non-access stratum NAS message and/or a security key. include. Thus, the connection establishment request format in the embodiment of the present invention supports expansion of the content of the connection establishment request message, and can be applied to fast connection establishment meeting different service requirements in multiple environments.

In an embodiment of the present invention, optionally, the network device may send network condition indication information to a terminal equipment, for said terminal equipment to send said connection establishment request message based on said network condition indication information. The network condition indication information is used to indicate whether the network device supports multiple formats of connection establishment request messages.

In an embodiment of the present invention, optionally, the network device may send a broadcast message to the terminal equipment, the broadcast message including the network condition indication information, or the network device may send the terminal equipment the previous sending an RRC connection establishment release message for a radio resource control RRC connection, the RRC connection establishment release message including the network condition indication information, or the network device sending terminal-specific signaling to the terminal equipment. and the terminal-specific signaling includes the network condition indication information, or the network device can send a paging message to the terminal equipment, and the paging message includes the network condition indication information.

Alternatively, the network system can determine whether to send the network condition indication information to the terminal equipment manually or automatically, and select the Southbound Interface or the Northbound Interface. or the MME configures network devices (e.g., base stations) via statistics on the number of attached users, user capabilities, and user connections in the network. ), or a network device (e.g., a base station) can statistically count the number of connected users and the number of users attempting to access the cell being covered, and the statistical result is Based on this, determine the network condition indication information (for example, the base station) to send to the terminal equipment, for example, if the ratio between the number of connected users and the number of users trying to access is higher than a certain value, the terminal equipment The network condition indication information can be sent, or the network device indicates the number of connected users of the cell covered and the number of users to be accessed when the MME sets the network condition indication information it sends to the terminal equipment. It can be determined whether to send the network condition indication information to the terminal device based on the number of users.

That is, when the network device receives the first indication message sent by the mobility management entity (MME), it sends the network condition indication information to the terminal equipment, or the network device sends the Based on the number of connecting users and the number of users trying to access, it can be determined whether to send the network condition indication information to the terminal equipment.

Optionally, the network device may send random access resources to the terminal equipment, said random access resources may be preamble groups.

Further optionally, the root sequence of the preamble sequences of the preamble group is different from the root sequence of the preamble sequences of the preamble group A, and the root sequence of the preamble sequences of the preamble group is the root sequence of the preamble sequences of the preamble group B. or the position of time-frequency resources occupied by said preamble group is different from that of preamble group A, and the position of time-frequency resources occupied by said preamble group is different from that of preamble group B;

Specifically, the network device can receive a second indication message sent by a mobility management entity (MME), the second indication message being a terminal supporting multiple types of connection establishment request formats in the network. It is used to indicate the proportionality of equipment and determines the number of preamble sequences to be included in a preamble group based on said proportionality. By way of example, the ratio of terminal equipment supporting multiple types of connection establishment request formats in a network is the number of terminal equipment supporting multiple types of connection establishment request formats and the number of all attached terminal equipment. It can be expressed in proportion, and the network device determines the number of preamble sequences based on the proportion. Or, the proportion of terminal equipment that supports multiple types of connection establishment request formats in the network can be represented by different levels (e.g., high, medium, low), and the number of preamble sequences corresponding to each level. may be defined by convention or otherwise determined, and the present invention is not limited to these.

For example, FIG. 4 depicts a flowchart illustrating a method for setting the number of preamble sequences in a preamble group according to an embodiment of the present invention. As shown in FIG. 4, the method 400 includes S401-S404.

At S401, a terminal device reports terminal capabilities to a Mobility Management Entity (MME).

The terminal equipment reports to the MME its ability to support multiple types of connection establishment request formats.

At S402, the MME calculates the proportion of the number of terminals supporting multiple types of connection establishment request formats in the network with statistics, and sends the result to the base station.

For the MME, the method for calculating the number of terminals supporting multiple types of connection establishment request formats may be the number of terminals supporting multiple types of connection establishment request formats n/the number of all attached terminals N.

In S403, the base station calculates the number of preambles of the preamble group that needs to be set according to the proportion sent by the received MME.

In S404, the base station transmits specific setting of the PreambleGroup to the terminal device.

The base station can send the specific configuration of the PreambleGroup to the terminal equipment through a broadcast message or terminal equipment dedicated signaling.

In an embodiment of the present invention, method 300 can optionally further include the network device configuring uplink resources for the terminal equipment.

Optionally, the network device can receive a terminal capability indication message sent by the terminal equipment and allocates uplink resources to the terminal equipment based on the terminal capability indication message. In other words, the network device stores the capability information of the terminal equipment, which includes the connection establishment request formats supported by the terminal equipment, and allocates uplink resources to respond to the terminal equipment. Alternatively, the network device allocates uplink resources to the terminal equipment based on the preamble group to which the preamble sequence transmitted by the terminal equipment belongs. In other words, the network device determines the group of random access resources to which the preamble sequence belongs by identifying the preamble sequence sent by the terminal equipment, and the terminal equipment uses multiple connection establishment request formats, such as PreambleGroupC. and allocates uplink resources to respond to the terminal equipment. Or, the network device allocates an uplink resource of a preset size to the terminal device, and the uplink resource of the preset size is a connection establishment request corresponding to a connection establishment request format that occupies the largest number of bits. A message can satisfy a request for resources. In other words, the network device allocates a much greater uplink resource to accommodate a connection establishment request message of maximum format.

In an embodiment of the present invention, the network device may optionally determine the size of the conflict resolution format according to the size of the connection establishment request format, e.g. can be copied and then sent back to the terminal equipment, for example, the network device can copy the ID of the terminal equipment in the connection establishment request message and send it back to the terminal equipment, and at the same time the terminal service (such as establish a dedicated data bearer for emergency services) (eg establish a dedicated bearer for emergency calls) or allocate fixed resources to D2D/V2V users.

Therefore, in the connection establishment method in the embodiment of the present invention, the network device receives the connection establishment request message sent according to the connection establishment request format determined by the terminal equipment, and according to the connection establishment request message format, , send a conflict resolution message to the terminal equipment. This makes it applicable to fast connection establishment meeting different service requirements in multiple environments.

FIG. 5 is a block diagram showing a terminal device according to an embodiment of the present invention. As shown in FIG. 5, a terminal device 10 includes:
a determination module 11 configured to establish a connection establishment request format to be used when sending a connection establishment request message from among multiple types of connection establishment request formats;
a sending module 12 configured to send a connection establishment request message to a network device based on the established connection establishment request format;
including.

Therefore, the terminal device according to the embodiment of the present invention can select one from a plurality of types of connection establishment request formats and transmit the connection establishment request message. This makes it applicable to fast connection establishment meeting different service requirements in multiple environments.

In an embodiment of the present invention, optionally, the determination module 11 is specifically used when sending a connection establishment request message based on at least one parameter of service requirements, capability requirements and network conditions. Configured to establish a connection establishment request format.

Optionally, in an embodiment of the present invention, the determination module 11:
determining whether the network device supports connection establishment request messages in multiple formats;
establishing a connection establishment request format to be used when sending a connection establishment request message from a plurality of kinds of connection establishment request formats when determining that the network device supports connection establishment request messages in multiple kinds of formats;
is further configured as

In an embodiment of the present invention, optionally, as shown in Figure 6, said terminal device further comprises a first receiving module 13 further configured to receive network condition indication information sent by a network device.

Here, the determining module 11 is further configured to determine whether the network device supports multiple formats of connection establishment request messages based on the network condition indication information.

In an embodiment of the present invention, optionally, the first receiving module 13 specifically:
receive a broadcast message sent by the network device; or
receiving an RRC connection establishment release message for a previous Radio Resource Control RRC connection sent by the network device; or
receive terminal-specific signaling transmitted by the network device; or
receiving paging messages sent by the network device;
wherein the broadcast message includes the network condition indication information, the RRC connection establishment release message includes the network condition indication information, the terminal-specific signaling includes the network condition indication information, and the paging The message includes said network condition indication information.

In an embodiment of the present invention, optionally, as shown in Fig. 7, said terminal equipment further comprises a second receiving module 14 adapted to receive random access resources transmitted by said network device.

Here, the determining module 11 is further configured to determine whether the network device supports multiple formats of connection establishment request messages based on the random access resource.

Optionally, in an embodiment of the present invention, said random access resource is a preamble group.

In an embodiment of the present invention, optionally, the root sequence of the preamble sequences of the preamble group is different from the root sequence of the preamble sequences of preamble group A, and the root sequence of the preamble sequences of the preamble group is the preamble of preamble group B. different from the root sequence of the sequence, or
The position of time-frequency resources occupied by the preamble group is different from that of preamble group A, and the position of time-frequency resources occupied by the preamble group is different from that of preamble group B.

In an embodiment of the present invention, the connection establishment request message optionally contains an identifier ID of the terminal equipment and/or a connection establishment cause and/or a non-access stratum NAS message and/or a security key. include.

In an embodiment of the present invention, optionally, the sending module 12 is further configured to send a terminal capability indication message to the network device, and the network device determines, based on the terminal capability indication message, the terminal equipment The terminal capability indication message indicates a connection establishment request format that the terminal equipment can support, in order to allocate uplink resources to .

In an embodiment of the present invention, optionally, said sending module 12 sends a terminal capability indication message to a Mobility Management Entity (MME) for said MME to configure said network device based on said terminal capability indication message. further configured to

In addition, in the embodiment of the present invention, the determination module 11 may be implemented by a processor, the transmission module 12 may be implemented by a transmitter, and the first reception module 13 and the second reception module 14 may be implemented by a receiver. It may be realized. As shown in FIG. 8, terminal device 100 may include processor 101 , receiver 102 , transmitter 103 and storage device 104 . Here, storage device 104 may be configured to store code or the like that is executed by processor 101 .

Each component within the device 100 is coupled via a bus system 105, where the bus system 105 includes a power bus, a control bus and a status signal bus in addition to the data bus.

The terminal device 10 shown in FIGS. 5 to 7 or the terminal device 100 shown in FIG. 8 can implement each flow implemented by the terminal device in the embodiment of FIG. 1 above. Yes, and will not be described further here to avoid duplication.

FIG. 9 shows a schematic block diagram of a network device according to an embodiment of the invention. As shown in FIG. 9, the network device 20
a receiving module 21 configured to receive a connection establishment request message sent from a terminal device;
a determination module 22 configured to determine a conflict resolution message based on the format of the connection establishment request message;
a sending module 23 configured to send the conflict resolution message to the terminal device;
, wherein the format of the connection establishment request message is determined by the terminal device from a plurality of connection establishment request formats.

Therefore, according to the format of the determined connection establishment request, the network device terminal equipment of the embodiment of the present invention receives the transmitted connection establishment request message, and according to the format of the connection establishment request message, sends a conflict resolution message to the terminal equipment. to send. This makes it applicable to fast connection establishment meeting different service requirements in multiple environments.

In an embodiment of the present invention, optionally, the sending module 23 is further configured to send network condition indication information to the terminal device, and the terminal device responds to the connection establishment request based on the network condition indication information. The network condition indication information is used to indicate whether the network device supports multiple formats of connection establishment request messages to determine the connection establishment request format for sending messages.

In an embodiment of the present invention, optionally, the sending module 23 specifically:
send a broadcast message to the terminal device; or
sending an RRC connection establishment release message for the previous Radio Resource Control RRC connection to the terminal device; or
sending terminal-specific signaling to the terminal equipment; or
sending a paging message to the terminal device;
wherein the broadcast message includes the network condition indication information, the RRC connection establishment release message includes the network condition indication information, the terminal-specific signaling includes the network condition indication information, and the paging The message includes said network condition indication information.

In an embodiment of the present invention, optionally, the sending module 23 sends the network condition indication information to the terminal device when the receiving module receives a first indication message sent by a Mobility Management Entity (MME). or
the determination module 22, based on the number of connected users of the cell covered by the network device and the number of users attempting to access, determines whether to send the network condition indication information to the terminal device; It is further configured to determine.

Optionally, in an embodiment of the present invention, the transmitting module 23 is further configured to transmit random access resources to the terminal equipment.

Optionally, in an embodiment of the present invention, said random access resource is a preamble group.

In an embodiment of the present invention, optionally, the root sequence of the preamble sequences of the preamble group is different from the root sequence of the preamble sequences of preamble group A, and the root sequence of the preamble sequences of the preamble group is the preamble of preamble group B. different from the root sequence of the sequence, or
The position of time-frequency resources occupied by the preamble group is different from that of preamble group A, and the position of time-frequency resources occupied by the preamble group is different from that of preamble group B.

In an embodiment of the present invention, optionally, said receiving module 21 is further configured to receive a second indication message sent by a Mobility Management Entity (MME), said second indication message being multiple used to indicate the proportion of terminal equipment that supports the type of connection establishment request format,
Here, the determining module 22 is further configured to determine the number of preamble sequences included in the preamble group based on the proportionality.

Optionally, in an embodiment of the present invention, said determination module 22 is further configured to allocate uplink resources to said terminal equipment.

In an embodiment of the present invention, optionally said receiving module 21 is adapted to receive a terminal capability indication message sent by said terminal equipment,
Here, the determination module 22
Allocating uplink resources to the terminal device based on the terminal capability indication message; or
Allocate uplink resources to the terminal device based on the preamble group to which the preamble sequence transmitted by the terminal device belongs, or
Allocate an uplink resource of a preset size to the terminal device;
is further configured as
The preset size of the uplink resource is such that a connection establishment request message corresponding to a connection establishment request format that occupies the most number of bits can satisfy the resource requirement.

In an embodiment of the present invention, the connection establishment request message optionally contains an identifier ID of the terminal equipment and/or a connection establishment cause and/or a non-access stratum NAS message and/or a security key. include.

It should be noted that in the embodiments of the present invention, the receiving module 21 may be implemented by a receiver, the determining module 22 may be implemented by a processor, and the transmitting module 23 may be implemented by a transmitter. As shown in FIG. 10, network device 200 may include processor 201 , receiver 202 , transmitter 203 and storage device 204 . Here, storage device 204 may be configured to store code or the like that is executed by processor 201 .

Each component within the network device 200 is coupled via a bus system 205, where the bus system 205 includes a power bus, a control bus and a status signal bus in addition to the data bus.

The network device 20 shown in FIG. 9 or the network device 200 shown in FIG. 10 is capable of implementing each flow implemented by the network device in the example of FIG. will not be described further here in order to avoid

It is understood that each exemplary unit and algorithm step described in the embodiments disclosed herein can be combined and implemented using electronic hardware or a combination of computer software and electronic hardware. A business person can understand. Whether these functions are implemented in the form of hardware or software depends on the particular application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be viewed as exceeding the scope of the invention.

For convenience and brevity of explanation, those skilled in the art can refer to the corresponding flows of the above method embodiments for the specific operations of the above-described systems, devices and units, and hereby refer to: I will say no more.

In some embodiments provided herein, the disclosed systems, devices and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely exemplary, for example, the division of the units is merely a logical division of functions, and in fact other divisions may be made when implemented. There may be, for example, multiple units or components may be integrated or aggregated into another system, or some technical features may be omitted or not implemented. Also, the mutual coupling or direct coupling or communication connection of each component shown or discussed may be connected by indirect coupling or communication of some interface, device or unit. may be electrical, mechanical, or otherwise.

Units described above as separate components may or may not be physically separate. A component shown as a unit may or may not be a physical unit. It may be located at one location or distributed to multiple network units. According to actual needs, some or all of the units may be selected to achieve the purpose of the technical solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be an independent unit, or two or more units may be integrated into one unit. You can

The functionality may be implemented in the form of software functional units and stored on a computer readable storage medium when sold or used as an independent product. Accordingly, the technical solution of the present invention, in other words, the portion contributed to the prior art can be embodied in the form of a software product, the computer software product is stored in a storage medium, and is stored in a computer device (personal computer, server, or network device). etc.) includes a plurality of instructions for performing the method of all or part of each embodiment of the present invention. The above storage media include USB memory, mobile storage media, read-only memory (ROM), random access memory (RAM), magnetic disk, compact disk, etc. Various program codes are stored. including media that can

What has been described above is merely a specific embodiment of the present invention, and the present invention is not limited thereto. All permutations should be included within the scope of the present invention. Therefore, the scope of the invention should be determined according to the appended claims.

Claims (4)

A connection establishment method comprising:
a network device receiving a random access preamble transmitted from the terminal equipment;
the network device sending a random access response (RAR) message to the terminal device;
The network device transmits network condition indication information to the terminal device, wherein the network condition indication information indicates whether the network device supports multiple formats of connection establishment request messages. , and
The network device receives a connection establishment request message transmitted by the terminal device after receiving the RAR message, and the connection establishment request format corresponding to the connection establishment request message includes a plurality of types of connection establishment requests. being one of the formats; and
said network device sending a contention resolution message to said terminal device according to a connection establishment request format corresponding to said connection establishment request message; the connection establishment request message includes an identifier ID of the terminal equipment and/or a connection establishment cause and/or a non-access stratum NAS message and/or a security key;
The connection establishment method according to claim 1, characterized by: a network device,
a receiving module configured to receive a random access preamble transmitted from a terminal device;
a sending module configured to send a random access response (RAR) message to the terminal device and to send network condition indication information to the terminal device, wherein the network condition indication information is for multiple types of network devices; a sending module that indicates whether to support connection establishment request messages in the format of
The receiving module is further configured to receive a connection establishment request message transmitted by the terminal device after receiving the RAR message, and the connection establishment request format corresponding to the connection establishment request message is a plurality of types of connections. one of the establishment request formats,
a determination module configured to determine a conflict resolution message based on the format of the connection establishment request message;
The network device, wherein the sending module is further configured to send a conflict resolution message to the terminal equipment according to a connection establishment request format corresponding to the connection establishment request message. the connection establishment request message includes an identifier ID of the terminal equipment and/or a connection establishment cause and/or a non-access stratum NAS message and/or a security key;
4. The network device of claim 3, wherein:

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