System and method to configure O-RAN fronthaul to support 2nd-generation (2G), 3rd-generation (3G) and NB-IOT
There is provided, an open radio access network distributed unit (O-DU) having an electronic module that performs an FS-8 Radio Access Technology (RAT) functionality.
1. An open radio access network distributed unit (O-DU) comprising an electronic module that configured with structures to execute parameters to perform FS-8 Radio Access Technology (RAT), the parameters comprising:
functional split 8 (FS-8) frame structure parameters;
Narrow Band-Internet of Things (NB-IOT) parameters; and
automatic gain control (AGC) parameters,
wherein the O-DU is configured to send the AGC parameters for a random access channel (RACH) AGC configuration to a 2G network radio unit (O-RU), the AGC parameters comprising:
a Frame number where the RACH is expected;
a Slot Number or Slot Numbers on the corresponding Frame number; and
a Target dynamic Gain Range of the AGC.
2. The O-DU of claim 1 , wherein the 2G radio unit can determine one or more of the AGC parameters based on the AGC parameter values.
3. The O-DU of claim 2 , wherein the 2G O-RU is configured to determine where the RACH is expected on a frame and apply gain control based on the AGC parameter values.
4. The O-DU of claim 1 , wherein the FS-8 frame structures comprise a maximum symbol size per millisecond capability for the O-RU.
5. The O-DU of claim 4 , wherein the FS-8 frame structure further comprises extended symbol length parameter, a normal symbol length parameter, a sampling rate parameter, or a combination thereof.
6. The O-DU of claim 5 , wherein the FS-8 frame structure further comprises an AGC-2G parameter, a 2G/3G RU frame format parameter, or both.
7. The O-DU of claim 1 , wherein the O-DU is configured to support a 2G and 3G NB-IOT.
8. The O-DU of claim 7 , wherein the O-DU is configured with a supported technology parameter configured for supporting GSM, UMTS and an NB-IOT, the supported technology parameter comprising a downlink parameter set, and uplink parameter set, or both.
9. The O-DU of claim 7 , wherein the O-DU is configured to support 2G and 3G NB-IOT in a U-plane configuration, wherein the O-DU is configured with carrier parameters.
10. The O-DU of claim 9 , wherein the carrier parameters comprise: tx-array carrier parameters, rx array carrier parameters, or both.
11. An open radio access network distributed unit (O-DU) comprising an electronic module that configured with structures to execute parameters to perform FS-8 Radio Access Technology (RAT), the parameters comprising:
functional split 8 (FS-8) frame structure parameters comprising:
a maximum symbol size per millisecond capability for the O-RU; and
an extended symbol length parameter, a normal symbol length parameter, or a sampling rate parameter, or a combination thereof;
Narrow Band-Internet of Things (NB-IOT) parameters; and
automatic gain control (AGC) parameters,
wherein a sampling rate SR bandwidth (in Msps) for occupied bandwidth is used to determine a symbol length N symb and a cyclic prefix length CP banndiwth of fronthaul symbols.
12. The O-DU of claim 11 , where the FH symbols are expressed as:
N symb =T symb ×SR bandwidth
CP bandwidth =( T symb −66.66* e 6 )× SR bandwidth
where T symb is in seconds.
13. An open radio access network distributed unit (O-DU) comprising an electronic module that configured with structures to execute parameters to perform FS-8 Radio Access Technology (RAT), the parameters comprising:
functional split 8 (FS-8) frame structure parameters;
Narrow Band-Internet of Things (NB-IOT) parameters; and
automatic gain control (AGC) parameters comprising a parameter structure configured for the O-DU to inform an O-RU of AGC parameters other than RACH slots, the AGC parameters comprising: a target dynamic range of the AGC, and AGC parameter sets.
14. The O-DU of claim 13 , wherein the AGC parameter sets comprise: an AGC integral gain parameter, an AGC proportional gain parameter and a derivative gain parameter.