CN105101449B - A kind of method and client terminal for realizing pilot frequency point networking - Google Patents

Abstract

Embodiments of the present invention provide a method and a client terminal for realizing inter-frequency point networking. The method includes: using the first number of bits to record the newly added first variable in the LTE network master information block, and using the second number of bits record the second variable; use the third number of bits in the random value of the radio resource control protocol connection request to record the newly added third variable and fourth variable, and record at least one of the third variable and the fourth variable containing the weakest and /or the frequency point information of the strongest primary frequency RSRP of the adjacent cell; the eNode B selects the secondary frequency from the secondary frequencies of the primary cell and the primary frequency of the primary cell for different frequency point networking, and the secondary frequency is recorded in the frequency point information The interference of primary frequency RSRP of each neighboring cell is minimum. In the data structure variable, record the primary frequency RSRP of the adjacent cell required for inter-frequency point networking, and report it to the eNode B on the network side, so that the network side can select the secondary frequency and the primary frequency of the primary cell for networking.

Description

A method and client terminal for realizing inter-frequency point networking

technical field

The present invention relates to long-term evolution network technology, in particular to a method for realizing inter-frequency point networking and a client terminal.

Background technique

The initial random access process of a client terminal (UE) in a Long Term Evolution (LTE, Long Term Evolution) network is shown in Figure 1, including:

In the first step, according to the agreement, the LTE cell has a total of 64 preamble sequences (Preamble) for random access, which belong to Group A and Group B respectively. The UE first selects Group A or Group B according to the parameter indication in the SIB2 message, and then randomly selects a Preamble from the selected Group according to a specific equation with equal probability. Channel) to send Preamble.

In the second step, the UE monitors the Random Access Response (RAR, Random Access Response(s)) on the PDCCH. When the UE successfully receives the RAR, the RAR contains the information sent by the user when the Preamble was originally sent. The resource block (RA-RNTI) used indicates that the UE has successfully received RAR, obtained uplink synchronization time and synchronization resources, and a cell radio network temporary identifier (C-RNTI, Cell Radio Network Temporary Identifier), C-RNTI Whether to convert to a permanent C-RNTI will be decided in the fourth step of Contention Resolution.

In the third step, the UE sends the RRC Connection Request (Msg3) on the PRACH, but the UE cannot be sure that the RAR sent by the eNode B is sent to itself rather than to other UEs, because there are different UEs at the same time and the same frequency If it is possible to select the same Preamble on the resource, different UEs may send Msg3 on the same uplink resource at the same time, because RA-RNTI is calculated based on these two dimensions. For this reason, the RRC ConnectionRequest will carry a randomly generated UE ID with a length of 40 bits to distinguish different UEs. In the ue-Identity randomValue used on the live network:

In the fourth step, the UE starts a certain timer after sending the RRC Connection Request. If within the time range of this timer, the UEID carried in the contention resolution (Contention Resolution) message received is the same as that in the RRC Connection Request (RRC Connection Request) ) carried the same UEID, the random access is successful, and the Temporary C-RNTI is set as its own C-RNTI. Otherwise, it is considered that the random access has failed, the Temporary C-RNTI is discarded, and the random access is restarted.

It can be known that the role of the 40-bit UE ID is to solve the contradiction that different UEs send RRC Connection Requests on the same uplink resource at the same time.

Step 5, eNode B sends RRC Connection Setup to UE.

The initial design of the LTE network did not allow the UE to report the reference signal received power (RSRP, Reference Signal Received Power) of the main frequency of the adjacent cell, because the LTE network defaults to a single-frequency co-frequency network.

There are problems in the existing LTE random access scheme: the performance of TD-LTE co-frequency networking is technically better than that of TD-SCDMA network, but it still does not fundamentally solve the inherent problems of co-frequency networking. During the access process, the RSRP of the signal strength of the main frequency point of the adjacent cell is not reported, so the inter-frequency point networking cannot be realized.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and a client terminal for realizing inter-frequency point networking, which are used to solve the problem that in the prior art, the UE does not report the signal strength RSRP of the main frequency point of the adjacent cell during the random access process. The defects that lead to the inability to realize the networking of different frequency points.

In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a method for implementing inter-frequency point networking, which is applied to a client terminal. The method includes: using the first number of bits in the LTE network master information block to record the newly added first variable, and use the second number of bits to record the second variable; use the third number of bits to record the newly added third variable and fourth variable in the random value of the radio resource control protocol connection request, in the third variable and the fourth At least one frequency point information containing the weakest and/or strongest primary frequency RSRP of the adjacent cell is recorded in the variable; the eNode B of the LTE network selects at least one secondary frequency and the primary frequency of the primary cell from each secondary frequency of the primary cell Performing inter-frequency point networking, the at least one secondary frequency is least interfered by the main frequency RSRP of each adjacent cell recorded in the frequency point information.

In the method, using the first number of bits in the LTE network master information block to record the newly added first variable specifically includes: occupying 1 bit in the spare area of the LTE network master information block to record the first variable; The two values of the first variable respectively represent the use of a single-frequency point networking manner or the use of an inter-frequency point networking manner.

In the described method, the second variable occupies 2 to 3 bits in the spare area of the LTE network main information block, and the second variable is enabled when the first variable indicates that a different frequency point networking method is used, otherwise in the LTE network main information block Does not carry the second variable; when the second variable occupies 3 bits, there are 7 values: 000, indicating that the client terminal does not need to report the measured RSRP offset value of the main frequency of the adjacent cell in the RRC ConnectionRequest; 001, indicating that the client terminal In the RRCConnection Request, the measured primary frequency of the adjacent cell needs to be reported. The RSRP offset value is 1, and it is the weakest one; 010, indicating that the client terminal needs to report the measured primary frequency of the adjacent cell in the RRC Connection Request. The RSRP offset value is 1, and it is the strongest one; 011, indicating that the client terminal needs to report the measured adjacent cell main frequency RSRP offset value in the RRC Connection Request is 2, and it is the weakest 2 100, indicating that the client terminal needs to report the measured primary frequency RSRP offset value of the adjacent cell in the RRCConnection Request, and it is the strongest 2; 101, indicating that the client terminal needs to report the measurement in the RRC Connection Request The measured adjacent cell primary frequency RSRP offset value is 3, and it is the weakest 3; 110, indicating that the UE needs to report the measured adjacent cell primary frequency RSRP offset value of 3 in the RRC Connection Request, And it is the strongest 3.

In the method, using the third number of bits in the random value of the RRC connection request to record the newly added third variable and the fourth variable includes: using an integer multiple of 7 in the 40 bits of the random value bits to record the newly added third variable and fourth variable, and the specific number of bits used for the frequency point information should be: the number of primary frequency RSRP offset values of adjacent cells contained in the second variable*7; The bits used are still used to record the random value.

In the method described above, in the frequency point information, every 7 bits is a group, and in each group, the third variable occupies 4 bits to indicate the main frequencies of the reported adjacent cells.

In the described method, in each group of 7 bits, the fourth variable RSRP_Offset occupies 3 bits to indicate the offset value of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell.

A client terminal, applied to an LTE network, the client terminal includes: a network message unit, configured to use a first number of bits to record a newly added first variable in an LTE network master information block, and a second number of bits to record a second variable Variable; a protocol modifying unit, configured to use a third number of bits to record the newly added third variable Frequency_Order and fourth variable RSRP_Offset in the random value of the radio resource control protocol connection request, and report at least A frequency point information containing the weakest and/or strongest primary frequency RSRP of the adjacent cell; the eNode B of the LTE network selects at least one secondary frequency from each secondary frequency of the primary cell to perform different frequency points with the primary frequency of the primary cell In networking, the at least one secondary frequency is least interfered by the main frequency RSRP of each adjacent cell recorded in the frequency point information.

In the client terminal, the network message unit includes: a first variable generation module, configured to occupy 1 bit in the spare area of the LTE network master information block to record the first variable; a first variable assignment module, configured to use the first variable The first variable has two values, which respectively indicate the use of single-frequency point networking or the use of different-frequency point networking; when the first variable indicates the use of different-frequency point networking, the second variable is enabled, otherwise the main information of the LTE network The block does not carry the second variable.

In the client terminal, the protocol modification unit includes: a frequency point information generating module, which is used to record the newly added third variable and fourth variable by using integer multiples of 7 bits in the 40 bits of the random value, and the frequency point The specific number of bits used in the information should be: the number of RSRP offset values of the primary frequency of adjacent cells included in the second variable*7; the unused bits are used to record the random value Random Value.

In the client terminal, the protocol modification unit includes: a frequency point information allocation module, used for the frequency point information, every 7 bits is a group, and in each group, the third variable occupies 4 bits to indicate reporting In each group of 7 bits, the fourth variable RSRP_Offset occupies 2 to 3 bits to indicate the offset value of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell.

The beneficial effects of the above-mentioned technical solution of the present invention are as follows: by transforming the original LTE network master information block MIB and the radio resource control protocol connection request, a new data structure variable is formed, and the different frequency points are recorded in this data structure variable The main frequency RSRP of the adjacent cell required for networking is reported to the eNode B on the network side, so that the network side can select the auxiliary frequency and the main frequency of the main cell for networking, and realize the different frequency points between the auxiliary frequency and the main frequency of the main cell networking.

Description of drawings

FIG. 1 shows a schematic flow diagram of UE initial random access in an existing LTE network;

Fig. 2 shows a schematic flow chart of a method for realizing inter-frequency point networking in an LTE network;

FIG. 3 shows a schematic diagram of the process of implementing inter-frequency point networking in an LTE network.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

To solve the problems of the prior art, good system performance must be obtained by inter-frequency networking.

Inter-frequency point networking, if the UE can report the signal strength (RSRP) of the main frequency point of the adjacent cell, or report the main frequencies with the weakest or strongest RSRP of the adjacent cell, the UE can choose the frequency with less interference accordingly. Points for resource allocation, thereby reducing interference. In an application scenario, the LTE network is a 3-frequency inter-frequency network, with a total of 4 cells, and their respective main frequency points and auxiliary frequency points are distributed as follows:

community main frequency point Auxiliary frequency point 1 Auxiliary frequency point 2 Cell A F1 F2 F3 Cell B F2 F3 F1 Cell C F3 F2 F1 Cell D F2 F1 F3

The UE initiates a call at the primary frequency point F1 of Cell A. If the received RSRP of the primary frequencies f2 and f3 of neighboring cells Cell B, CellC, and Cell D can be reported, the eNode B can assign the UE the secondary frequency point with the least interference accordingly. Frequency. For example, if the RSRP of f2 (the sum of the main frequency RSRPs of Cell B and Cell D) reported by the UE is -65dBm, and the RSRP of the main frequency f3 of Cell C is -85dBm, then the interference of f2 to the secondary frequency point f2 of Cell A is greater than that of f3 to The interference of the secondary frequency point f3 of Cell A, so the eNode B will allocate the UE to the frequency point f3, thereby reducing the interference of the primary frequency of adjacent cells to its secondary frequency point. This is just one of the technical advantages of UE reporting the RSRP of neighboring cells. It can bring many potential benefits for subsequent optimization.

The present invention breaks the limitations of LTE network co-frequency networking, and provides a brand new method without changing the signaling length and size of LTE network master information block (MIB, MasterInformation Block) and radio resource control protocol connection request (RRC Connection Request). The signaling format to achieve inter-frequency point networking.

The frequency band lengths of the flexible networking introduced by the LTE network are 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, a total of 6 frequency bands, which can completely realize different frequency point networking. The 20MHz frequency bandwidth can not only realize single-frequency 20MHz networking, but also realize 2-frequency point (10MHz single-frequency point) networking, 4-frequency point (5MHz single-frequency point) networking and 6-frequency point (3MHz single-frequency point) networking networking, etc. Among them, the starting frequency of the D frequency band is 37750. If the frequency band length is 10MHz, if the first center frequency is 37800, the center frequency of the second frequency is 37800+100=37900. If the frequency band length is 20MHz, the center frequency point of the first frequency band is 37750+100=37850; the center frequency point of the second frequency point is 37750+200=37950. Remember the initial frequency point of the frequency band, and calculate the subsequent center frequency point according to the frequency bandwidth.

The embodiment of the present invention provides a method for implementing inter-frequency point networking, as shown in FIG. 2, applied to a client terminal UE, and the method includes:

Step 21, using the first number of bits to record the newly added first variable nFrequency in the LTE network master information block, and the second number of bits to record the second variable numberOf-Frequency;

Step 22, use the third number of bits in the random value (Random Value) of the RRC connection request to record the newly added third variable and fourth variable, and report at least one of the third variable and the fourth variable containing the most Weak and/or strongest adjacent cell primary frequency RSRP frequency point information; the eNode B selects the secondary frequency from each secondary frequency of the primary cell to perform different frequency point networking with the primary frequency of the primary cell, and the secondary frequency is subject to the The main frequency RSRP of each adjacent cell recorded in the frequency point information has the least interference.

By applying the technology provided, a new data structure variable is formed by transforming the original LTE network master information block and radio resource control protocol connection request. The main frequency RSRP of the adjacent cell is reported to the eNode B on the network side, so that the network side can select the auxiliary frequency and the main frequency of the main cell for networking, and realize the different frequency point networking between the auxiliary frequency and the main frequency of the main cell.

In a preferred embodiment, the newly added first variable nFrequency recorded in the LTE network master information block using the first number of bits specifically includes:

Occupying 1 bit in the spare area of the LTE network master information block to record the first variable;

The first variable has two values, which respectively indicate the use of single-frequency point networking or the use of different-frequency point networking;

The second variable is enabled when the first variable indicates that a different-frequency point networking mode is used; otherwise, the LTE network master information block does not carry the second variable.

The first number is four, occupying 1 bit in the spare area of the MIB to record the first variable nFrequency, the first variable nFrequency has two values, and the range and meaning of each value are:

A value of 0 represents the use of single-frequency point networking, and a value of 1 represents the use of different-frequency point networking; when the value of the first variable is 1, there will be a record of the second variable, otherwise the main information block of the LTE network does not carry the second variable.

The first variable describes the networking mode, and the second variable describes the number of reported and measured primary frequency RSRP offset values of adjacent cells.

In a preferred embodiment, the second variable occupies 2 to 3 bits in the spare area of the LTE network main information block, and when the second variable occupies 3 bits, there are 7 kinds of values:

000, indicating that the client terminal does not need to report the measured RSRP offset value of the main frequency of the adjacent cell in the RRC Connection Request;

001, indicating that the client terminal needs to report the measured primary frequency RSRP offset value of the adjacent cell in the RRC Connection Request, and it is the weakest one;

010, indicating that the client terminal needs to report the measured primary frequency RSRP offset value of the adjacent cell in the RRC Connection Request, and it is the strongest one;

011, indicating that the client terminal needs to report the measured primary frequency RSRP offset values of adjacent cells in the RRC Connection Request to 2, and they are the weakest 2;

100, indicating that the client terminal needs to report the measured adjacent cell main frequency RSRP offset values in the RRC Connection Request to 2, and the two are the strongest;

101, instructing the client terminal to report the measured primary frequency RSRP offset values of adjacent cells in the RRC Connection Request to 3, and the three are the weakest;

110, instructing the UE to report three measured adjacent cell main frequency RSRP offset values in the RRC Connection Request, and the three are the strongest.

In an application scenario, the MIB message format is modified.

The MIB message format is defined in 3GPP TS36.331:

The spare area in the MIB has a total of 10 bits. The role of this area is not defined in the 3GPP protocol, and the spare area is modified and utilized accordingly.

Extract 3 bits out of 10 bits, of which, 1 bit records whether to use different frequency point networking, and 2 bits are used to record the number of RSRP offset values of the main frequency of adjacent cells that need to be reported to the eNode B, and report The maximum number of 3.

In a preferred embodiment, using the third number of bits in the random value of the radio resource control protocol connection request to record the newly added third variable and fourth variable includes:

Among the 40 bits of the random value, an integer multiple of 7 bits is used to record the newly added third variable and fourth variable, and the specific number of bits used for the frequency point information should be: The number of frequency RSRP offset values*7, the number of primary frequency RSRP offset values of adjacent cells is less than or equal to 3;

The unused bits are used to record the random value Random Value.

An integer multiple of 7 is 7, or 14, or 21 bits, corresponding to 1, 2, or 3 reported numbers of the weakest or strongest primary frequency RSRPs of neighboring cells. When the frequency point information occupies 7 bits, 4 bits are used in the third variable Frequency_Order to indicate the main frequencies of the reported adjacent cells.

In a preferred embodiment, in each group of 7 bits, the fourth variable RSRP_Offset occupies 3 bits to indicate the offset value of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell, referred to as: adjacent cell primary frequency RSRP offset value. In a cell, only the primary frequency transmits signals 24/7, and the secondary frequency only transmits when it is in use. Therefore, what is considered here is the offset of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell. .

The rest of the 40 bits of the random value are still used to record the Random Value.

In an application scenario, the format of an RRC Connection Request message (RRC ConnectionRequest message) is modified.

3GPP TS36.331 defines that 40-bit RRC RandomValue is used in RRC Connection Request to solve the contradiction that different UEs send RRC Connection Request on the same uplink resource at the same time, so two UEs collide—that is, the probability of selecting the same UE ID is 1/240, this probability value is very very low, so some bits in the Random Value can be properly borrowed to implement the technology of the present invention.

If instead of using 3 bits to represent the second variable, 2 bits are used to represent the second variable, which is used to report 1, 2 or 3 frequency points with the weakest RSRP, these three values are divided into the following three types Happening:

numberOf-Frequency=01, the reported and measured primary frequency RSRP offset value of the adjacent cell is 1, so 7 bits need to be borrowed to form the third variable and the fourth variable, and the remaining 33 bits are used for Random Value.

numberOf-Frequency=10, the reported measured primary frequency RSRP offset value of the adjacent cell is 2, so 14 bits need to be borrowed to form the third variable and the fourth variable, and the remaining 26 bits are used for Random Value.

numberOf-Frequency=11, the reported measured primary frequency RSRP offset value of the adjacent cell is 3, so 21 bits need to be borrowed to form the third variable and the fourth variable, and the remaining 19 bits are used for Random Value.

The length of the first variable Frequency_Order is 4 bits, which is used to indicate each main frequency of the adjacent cell, and both the UE and the eNode B side know the corresponding relationship as follows:

binary convert to decimal meaning 0000 0 Corresponding to the frequency point f1 of the lowest frequency among the main frequencies of adjacent cells 0001 1 frequency point f2 0010 2 frequency point f3 0011 3 frequency point f4 ... ... ... 1111 16 Frequency point f16 (the highest frequency in adjacent cells)

Since the eNode B knows which adjacent cells are configured by the main cell and the primary frequencies of these adjacent cells, it also knows that the primary frequencies of these adjacent cells are sorted from low to high frequency.

The UE can learn its neighbor cell information through system messages SIB4 and SIB5. Therefore, the eNode B can retrieve a specific frequency point through the third variable Frequency_Order reported by the UE.

The frequencies of the frequency points f1 to f16 are in order from low to high. The inter-frequency point networking scheme improves the same-frequency interference, but the number of inter-frequency points does not mean that the more the better. The more frequency points, the lower the throughput of a single frequency point, and the frequency band width that each operator can obtain is also limited, so the inter-frequency point networking scheme should not exceed 16 at most.

The length of the fourth variable RSRP_Offset is 3 bits, which is used for the RSRP of the frequency point of each adjacent cell received by the UE. The offset value relative to the signal strength of the primary cell refers to:

000, the RSRP of this frequency point is higher than that of the primary serving cell;

001, 0dB<=primary serving cell RSRP-this frequency point RSRP<5dB;

010, 5dB<=primary serving cell RSRP-this frequency point RSRP<10dB;

011, 10dB<=primary serving cell RSRP-this frequency point RSRP<15dB;

100, 15dB<=main serving cell RSRP-the frequency point RSRP<20dB;

101, 20dB<=primary serving cell RSRP-this frequency point RSRP<25dB;

110, 20dB<=primary serving cell RSRP-this frequency point RSRP<25dB;

111, reserved value.

The new RRC Connection Request message does not change the length of the RRC Connection Request message. After modification, although the probability of two UEs colliding (selecting the same UE ID) decreases according to the numberOf-Frequency, the probability of two UEs colliding in the N-frequency network is still very, very small.

In an application scenario, as shown in Figure 3, the process of implementing inter-frequency point networking on an LTE network includes:

Step 31, only when the first variable nFrequency in the MIB message is 1, there will be a record of the second variable numberOf-Frequency, otherwise the original random access format and algorithm will be used.

Step 32, the second variable numberOf-Frequency occupies 3 bits to record 7 values, divided into 000, 001, 010, 011, 100, 101 and 110.

Step 33,000 indicates that the UE does not need to report the measured adjacent cell primary frequency RSRP offset value in the RRC Connection Request; go to step 34a;

001 or 010 indicates that the UE needs to report the measured adjacent cell main frequency RSRP offset value of 1 in the RRC Connection Request. 001 refers to the weakest one, and 010 refers to the strongest one; go to step 34b;

011 or 100 indicates that the UE needs to report the measured adjacent cell primary frequency RSRP offset value of 2 in the RRC Connection Request. 011 refers to the two weakest ones, and 100 refers to the two strongest ones; go to step 34c;

101 or 110 indicates that the UE needs to report the measured RSRP offset value of the primary frequency of the adjacent cell to 3 in the RRC Connection Request. 101 refers to the weakest 3, 110 refers to the strongest 3, go to step 34d.

Step 34, a, continue to use the original random access algorithm format and flow;

b. It is necessary to borrow 7 bits of Random Value in RRC Connection Request for this technical solution, and the remaining 33 bits are used for Random Value. Of the 7 bits, 4 bits are used to record Frequency_Order, and 3 bits are used to record RSRP_Offset.

c. It is necessary to borrow 14 bits of Random Value in RRC Connection Request for this technical solution, the remaining 26 bits are used for Random Value, and 14 bits record Frequency_Order and RSRP_Offset of 2 frequency points.

d. It is necessary to borrow 21 bits of Random Value in RRC Connection Request for this technical solution, the remaining 19 bits are used for Random Value, and 21 bits record Frequency_Order and RSRP_Offset of 3 frequency points.

An embodiment of the present invention provides a client terminal, which is applied to an LTE network, and the client terminal includes:

A network message unit, configured to use the first number of bits to record the newly added first variable in the LTE network master information block, and the second number of bits to record the second variable;

The protocol modifying unit is configured to use the third number of bits in the random value of the radio resource control protocol connection request to record the newly added third variable Frequency_Order and fourth variable RSRP_Offset, and report at least one of the third variable and the fourth variable containing Frequency point information of the weakest and/or strongest primary frequency RSRP of the adjacent cell; the eNodeB of the LTE network selects the secondary frequency from the secondary frequencies of the primary cell and performs different frequency point networking with the primary frequency of the primary cell. The interference from the main frequency RSRP of each adjacent cell recorded in the frequency point information is the least.

In a preferred embodiment, the network message unit includes:

The first variable generation module is used to occupy 1 bit in the spare area of the LTE network master information block to record the first variable;

The first variable assignment module is used for the first variable to have two values, which respectively indicate the use of single-frequency point networking or the use of different-frequency point networking; when the first variable indicates that the use of different-frequency point networking is enabled The second variable, otherwise the LTE network master information block does not carry the second variable.

In a preferred embodiment, the protocol modification unit includes:

The frequency point information generation module is used to record the newly added third variable and fourth variable by using integer multiples of 7 bits in the 40 bits of the random value, and the specific number of bits used by the frequency point information should be: the second The number of primary frequency RSRP offset values of adjacent cells contained in the variable*7; the unused bits are used to record the random value Random Value.

In a preferred embodiment, the protocol modification unit includes:

The frequency point information allocation module is used in the frequency point information, and every 7 bits is a group, and in each group, the third variable occupies 4 bits to indicate each main frequency of the adjacent cell reported;

In each group of 7 bits, the fourth variable RSRP_Offset occupies 2 to 3 bits to indicate the offset value of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell.

The advantages of adopting this solution are: when the networking mode is single-frequency point same-frequency networking, the existing random access technology is adopted; when the networking mode is inter-frequency point networking, the random access technology provided by the embodiment of the present invention is adopted Access method: effectively make up for the defects of the existing random access technology in the inter-frequency point networking mode, will not increase the signaling load, has high practical value and innovative value, and is also applicable to frequency division duplex (FDD, Frequency Division Duplexing) mode and Time Division Duplex (TDD, Time Division Duplexing) mode LTE network.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (8)

1. A method for realizing inter-frequency point networking, characterized in that, being applied to a client terminal, the method comprises: using the first number of bits to record the newly added first variable in the LTE network message, and using the second number of bits to record the second variable; In the random value of the radio resource control protocol connection request RRC Connection Request, the third number of bits is used to record the newly added third variable and the fourth variable, and at least one of the third variable and the fourth variable contains the weakest and/or The frequency point information of the strongest adjacent cell main frequency reference signal received power RSRP; the eNode B of the long-term evolution network selects at least one auxiliary frequency from each auxiliary frequency of the main cell and the main frequency of the main cell for inter-frequency point networking , the at least one secondary frequency is least interfered by the primary frequency RSRP of each adjacent cell recorded in the frequency point information; Using the first number of bits to record the newly added first variable in the long-term evolution network message specifically includes: occupying 1 bit in the spare area of the long-term evolution network message to record the first variable; two values of the first variable Respectively indicate the use of single-frequency point networking, or the use of different-frequency point networking; The second variable occupies 2 to 3 bits in the spare area of the LTE network message, and the second variable is enabled when the first variable indicates that the inter-frequency point networking mode is used, otherwise the second variable is not carried in the LTE network message. 2. The method according to claim 1, characterized in that, when the second variable occupies 3 bits, there are 7 values: 000, indicating that the client terminal does not need to report the measured RSRP offset value of the main frequency of the adjacent cell in the RRC Connection Request; 001, indicating that the client terminal needs to report the measured primary frequency RSRP offset value of the adjacent cell in the RRC Connection Request, and it is the weakest one; 010, indicating that the client terminal needs to report the measured primary frequency RSRP offset value of the adjacent cell in the RRC Connection Request, and it is the strongest one; 011, indicating that the client terminal needs to report the measured primary frequency RSRP offset values of adjacent cells in the RRC Connection Request to 2, and they are the weakest 2; 100, indicating that the client terminal needs to report the measured adjacent cell main frequency RSRP offset values in the RRC Connection Request to 2, and the two are the strongest; 101, instructing the client terminal to report the measured primary frequency RSRP offset values of adjacent cells in the RRC Connection Request to 3, and the three are the weakest; 110, instructing the UE to report three measured adjacent cell main frequency RSRP offset values in the RRC Connection Request, and the three are the strongest. 3. The method according to claim 1, wherein, in the random value of the RRCConnection Request, adopting the third number of bits to record the newly added third variable and the fourth variable include: In the random value, an integer multiple of 7 bits is used to record the newly added third variable and fourth variable, and the specific number of bits used for the frequency point information should be: the primary frequency RSRP offset of the adjacent cell included in the second variable The number of values*7; The unused bits are still used to record the random value. 4. The method of claim 3, wherein, In the frequency point information, every 7 bits is a group, and in each group, the third variable occupies 4 bits to indicate the main frequencies of the reported adjacent cells. 5. The method of claim 4, wherein, In each group of 7 bits, the fourth variable RSRP_Offset occupies 3 bits to indicate the offset value of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell. 6. A client terminal, characterized in that it is applied to a long-term evolution network, and the client terminal includes: The network message unit is used to use the first number of bits to record the newly added first variable in the long-term evolution network message, and the second number of bits to record the second variable; the second variable occupies 2 in the spare area of the long-term evolution network message Up to 3 bits, when the first variable indicates that the second variable is used when the inter-frequency point networking method is used, otherwise the second variable is not carried in the long-term evolution network message; The protocol modifying unit is configured to use the third number of bits in the random value of the radio resource control protocol connection request to record the newly added third variable Frequency_Order and fourth variable RSRP_Offset, and report at least one of the third variable and the fourth variable containing Frequency point information of the weakest and/or strongest adjacent cell primary frequency RSRP; the eNode B of the LTE network selects at least one secondary frequency from each secondary frequency of the primary cell and the primary frequency of the primary cell for inter-frequency point networking , the at least one secondary frequency is least interfered by the primary frequency RSRP of each adjacent cell recorded in the frequency point information; Network message units include: The first variable generation module is used to occupy 1 bit in the spare area of the LTE network master information block to record the first variable; The first variable assignment module is used for the first variable to have two values, which respectively indicate the use of single-frequency point networking or the use of different-frequency point networking; when the first variable indicates that the use of different-frequency point networking is enabled The second variable, otherwise the LTE network master information block does not carry the second variable. 7. The client terminal according to claim 6, wherein the protocol modification unit comprises: The frequency point information generation module is used to record the newly added third variable and fourth variable using integer multiples of 7 bits in the random value, and the specific number of bits used for the frequency point information should be: the second variable contains The number of primary frequency RSRP offset values of adjacent cells*7; the unused bits are used to record the random value Random Value. 8. The client terminal according to claim 6, wherein the protocol modification unit comprises: The frequency point information allocation module is used in the frequency point information, and every 7 bits is a group, and in each group, the third variable occupies 4 bits to indicate each main frequency of the adjacent cell reported; In each group of 7 bits, the fourth variable RSRP_Offset occupies 2 to 3 bits to indicate the offset value of the primary frequency RSRP of the adjacent cell relative to the primary frequency RSRP of the primary cell.